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Community => Bar Sport => Topic started by: travis_farmer on May 06, 2017, 05:48 pm

Title: what i have been up to, thus far.
Post by: travis_farmer on May 06, 2017, 05:48 pm
Aside from doing quite a bit of mind-numbing research on building my CNC router, i have spent my weekends gutting out my old camper, as i plan on renovating it to become my portable CNC shed, as it is the only place i have available to put it, where it won't be in the way. the camper is a 29' dual-axle monster, and it will give me plenty of room for my CNC.
I will have to re-structure some of the walls for side-to-side structure, if i take it down the road. but for the most part, it will be fairly open. so i will have room for the control computer, and other supporting electronics. it will also have room for some basic storage for spare parts, and other tools.
I will be getting a little bit of money back from my tax return, so it will enable me to get a good start on my latest project.

Also, i was finally able to register my motorcycle, so after a spring tune-up, and after the weather turns better, i look forward to be out on two wheels again. I will have to be careful my first time out, as they have not yet finished cleaning up the road sand from this winter.

I haven't been posting much lately, mostly due to whenever i do, i seem to go against the grain of someone, somewhere. but heck with them, I'm going to post anyway!  :smiley-razz:

as far as Arduino related projects, i have discovered a method to make a CNC pendant with an Arduino, for LinuxCNC. so that has been occupying the design portion of my brain, lately. if i get it to work, i will likely post my results to the forum. it is based on somebody else's work (https://forum.linuxcnc.org/18-computer/22562-arduino-based-usb-pendant-for-linuxcnc), but i will be making a few design and coding changes. and i plan on using my Xbee to make it a wireless pendant. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on May 06, 2017, 07:44 pm
Adafruit has a really nice battery charging/management breakout board that is small enough to fit inside a handheld. That way you can use a rechargeable lion battery to power it.


I'm using one to provide battery back up to a wifi enabled freezer alarm. I get text messages if the freezer is warming up above 25 degrees, or if power is lost. (Wifi on APC) If goes above 32 a loud siren goes off and I get that alert as well.

Saved my food a few times already because for whatever reason I have a hard time getting the door to fully close.

adafruit (https://www.adafruit.com/product/2465?gclid=Cj0KEQjw6LXIBRCUqIjXmdKBxZUBEiQA_f50Pjp-cSapdD0Cv4EcQ-EyLZHlqESWuvI67wg30QfAc8QaAh2W8P8HAQ)


On board buck-boost to bring the 3,7v to a nice 5v
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 06, 2017, 08:42 pm
Adafruit has a really nice battery charging/management breakout board that is small enough to fit inside a handheld. That way you can use a rechargeable lion battery to power it.


I'm using one to provide battery back up to a wifi enabled freezer alarm. I get text messages if the freezer is warming up above 25 degrees, or if power is lost. (Wifi on APC) If goes above 32 a loud siren goes off and I get that alert as well.

Saved my food a few times already because for whatever reason I have a hard time getting the door to fully close.

adafruit (https://www.adafruit.com/product/2465?gclid=Cj0KEQjw6LXIBRCUqIjXmdKBxZUBEiQA_f50Pjp-cSapdD0Cv4EcQ-EyLZHlqESWuvI67wg30QfAc8QaAh2W8P8HAQ)


On board buck-boost to bring the 3,7v to a nice 5v
here i go, typing again... (504 Gateway error  :smiley-mad: )

anyway, thanks for the tip! :D i was going to use a large RC vehicle battery, but the Lion battery and charger/booster board will be much lighter.

As my design uses both an Xbee, and a Nextion display, plus a 100ppr handwheel encoder, i may want to check what my load will be. make sure i can do it with a 1000ma limit. i'm not used to battery powered projects, so power conservation is kinda new to me.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on May 06, 2017, 08:50 pm
The nextion supply will probably be a deal breaker.. some of the back lights use 700ma alone..
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 06, 2017, 09:00 pm
The nextion supply will probably be a deal breaker.. some of the back lights use 700ma alone..
Hmm, i haven't tested it yet, but i do remember that it takes a bit of power.

as soon as i find my workbench again (currently has a LinuxCNC controller prototype and motherboard sitting on it), i will have to build a more complete prototype to test the current draw. but it may be like you say, a deal breaker.

in the name of power consumption, i may switch to a 20X4 LCD. less graphical interface, but less power consumption too.

perhaps i am looking at this idea from the wrong perspective. rather than fancy bling (Nextion display), maybe i will look at it from the battery capacity, and build from there.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on May 06, 2017, 11:44 pm
Even a graphical lcd display would consume a lot less power.
Title: Re: what i have been up to, thus far.
Post by: TKall on May 07, 2017, 02:32 am
How do you like the nextion display?  I have two but have been too busy to do much with them yet.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 07, 2017, 09:54 am
How do you like the nextion display?  I have two but have been too busy to do much with them yet.
i like it. I have used it in several project prototypes, but have yet to lock it in to any one project. the graphics aren't dynamic, like an Arduino controlled TFT. but once you get the Nextion IDE figured out, it can still make some nearly impressive user interfaces.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 07, 2017, 11:03 pm
I got my motorcycle polished up, and looking good :D well, at least as good as a 1988 bike with 105K miles on it can look.

My father also announced that i will be getting a $1.50 raise  :o to help me fund my CNC machine build :D i suppose that means i will have to do some actual work to earn it ;)

Even a graphical lcd display would consume a lot less power.
I haven't used one of these yet, perhaps i should order one just to experiment with.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 10, 2017, 12:34 pm
while building/researching my big CNC, i bought a mini CNC router/laser (http://www.ebay.com/itm/192180560724) from eBay. it will get me familiar with a CNC, so i can better design and research my big one. it is a GRBL kit, so i can't use LinuxCNC, unless i modify it, but that's fine. I mainly wanted it as a learning tool, and i can use it to mill out PCB for any future electronics projects. :D

it is coming on the slow-boat from China, so it will be here... next month, maybe ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 16, 2017, 12:04 am
I have had the opportunity to possibly buy a 48" X 48" X 5" (work area) CNC router. it is a bit of a fixer-upper, but i will go look at it tomorrow after work. I may have to change out a few things, but it should give me a good starting point. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 17, 2017, 12:21 am
well, i bought the used router. it is a Techno/Isel router, it has no drivers or controller, but it did come with a monster Perske VS 60.11-2, 5HP, 3-phase spindle. problem is, i don't happen to have 3-phase electrical service. so i either have to buy a phase converter ($$$  :o ), or just buy a adapter to mount my Makita RF1101 router.

either way, it will be an adventure bringing this monster to life. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on May 17, 2017, 01:51 am
topic needs pics.  However you probably do not need a rotary phase converter (450) for the money, you can get a static three phase converter for relatively cheap(150).  You'll have reduced power to the motor but it might still be better than the makita. How much did it cost?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 17, 2017, 02:14 am
it cost me $500.

I will post pics when i get it off-loaded from the trailer, and find space for it.

I will look into a static phase converter. haven't seen one before. for that matter, i have never hooked up 3-phase, so i will have to look that up as well.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on May 17, 2017, 03:10 am
basically, it goes panel to disconnect to converter to machine. But, after commenting i did some more research and basically it is a bad idea to connect a cnc machine to a static phase converter because it not only affects torque, but also spindle speed, which, as you know is very important to a cnc machine.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 17, 2017, 09:55 am
basically, it goes panel to disconnect to converter to machine. But, after commenting i did some more research and basically it is a bad idea to connect a cnc machine to a static phase converter because it not only affects torque, but also spindle speed, which, as you know is very important to a cnc machine.
what about a VFD (http://www.ebay.com/itm/111490143307)?

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 17, 2017, 10:57 pm
thought i would post a few preliminary pictures of the CNC. it is still on the trailer as i get space ready for it (covered under a heavy duty tarp for now).


(http://tjfserver.ddns.net/misc/IMG_0006.JPG)

(http://tjfserver.ddns.net/misc/IMG_0007.JPG)

(http://tjfserver.ddns.net/misc/IMG_0008.JPG)

(edit: didn't let me attach, so i had to pop them on my server)

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on May 18, 2017, 03:29 pm
I'm not too familiar with vfd's, but they guys at the CNCzone say you have to isolate the spindle from the rest of the machine/steppers. They seeemed unimpressed, but the same guy was pushing a particular phase converter as the only solution... and I know a rotary phase covertly will work, so consider the source...
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on May 18, 2017, 03:30 pm
I'd also say worse case it like it's like you got $500 in scrap. Beefy.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 21, 2017, 10:11 am
I have been puttering away at gutting out my camper to accept my big CNC. it will be snug, but it will fit inside. not sure yet if it will fit between the wheel humps, but i will measure that as soon as i get the other side exposed enough to run a tape measure.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 21, 2017, 02:04 pm
it suddenly occurred to me, how am i going to get the CNC up onto the camper floor? the CNC is heavy, and the camper floor is a ways up. even if i jack the camper tongue way up, and settle the rear of the camper on the ground, i still have to lift it off the trailer it is perched on now. i mean, this CNC machine is quite heavy due to the all steel base frame. I could pull the CNC off the base frame to make it lighter, but it would risk tweaking the CNC.

this may take a little thought...
I still have some demo work left on the camper, so there is plenty of time to figure something out.

I don't suppose anybody has a forklift or crane, and lives in Maine, USA? ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 27, 2017, 12:02 am
i plan to cut the hole in the side of my camper this weekend to move in the CNC router. with the exception of a window in the way, i plan to just frame the opening, then break out a reciprocating saw, and make a big hole :D
then i just have to make a set of doors to plug the hole.
I have some new stepper motors being shipped (arrives Tuesday). so, with luck permitting, by next weekend, i should have enough to make some preliminary CNC moves :D
I will be using my Makita RF1101 router, rather that the 3-phase spindle, simply because i only need a relay to control it. i still have to buy or make a mount for it though.

My mini-cnc has been a useful tool, in figuring out how to align a work-piece in reference to the CNC program. that and i plan to use it to laser burn a logo onto some of the work my father and i do.

oh, on my big CNC, i discovered several of the limit switches are apparently missing, but i happen to have lots of hall-effect sensors and strong magnets that i would like to use as non-mechanical limits. i have tested them, and they work pretty reliably. once i have a moving machine, i can test them for repeatability and accuracy. i may have to use mechanical limits if i don't like the error level.

Just an update, for those that may be following this project. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on May 27, 2017, 02:39 am
Travis, if you need help I'm pretty good with autocad inventor for designing a mount...

Hall effect sensors have a lot more repeatability than a mechanical endstop.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 27, 2017, 09:42 pm
Travis, if you need help I'm pretty good with autocad inventor for designing a mount...

Hall effect sensors have a lot more repeatability than a mechanical endstop.
i found a source (http://www.cncrouterparts.com/makita-rf1101-router-mount-p-292.html) that sells one for a little over a hundred bucks, it is supposed to be strong and accurate. but i am not ready for it yet anyway. it is just on my ToDo list at the moment.

the CNC is in the camper! :D there is still a gaping hole in the wall, but i have it tarped for overnight, and it is sitting 90 degrees from the orientation i wanted, but i can spin it once i demo more of the camper guts. it is tight, but i am sure i can make it work.

there was a lot more rot in the camper walls than i thought, but i took most of it out to get the CNC door opening made. i can fix it later, once the camper is fully gutted out. I still have to make the doors to plug the big hole, too. i would have taken pictures, but i was far too exhausted at the end to even hold up a camera.

i still have a lot of work to do, but the heaviest grunt work is done, other than replacing the roofing material. but i have to re-structure the inside before i can climb up on the roof. just as long as i can get it done before winter. right now it most certainly cannot support any snow load.

so anyway, that is my progress so far.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on May 27, 2017, 10:39 pm
Travis, maybe you could just build something over the camper instead of attaching it to the camper...
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 27, 2017, 10:50 pm
Travis, maybe you could just build something over the camper instead of attaching it to the camper...
due to local regulations, it has to remain a temporary/mobile camper, or the property taxes would be increased. building something over the camper would qualify as a permanent structure. it would also be a lot more money than just building a new roof above the existing roof. i can get some commercial grade rubber roofing, and adhesive pretty cheap (comparatively). and it will help preserve the camper, so when i move, i can just hitch up and take it with me.

Believe me, i have thought of just building over the camper. i have even thought of building a second floor on the camper, but reality quickly shot that down ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 30, 2017, 12:03 am
sometimes i have to wonder if i have taken too big a bite. my ideas seem to be far grander than what is possible with reality. it will cost me about a grand, give or take, to get my CNC camper up to shape. i have a CNC that could be making me money, but i will have to spend a bunch before i can either make a bunch, or make nothing. I have suspended all projects so i can use the "surplus" to fund my CNC.
I am seriously considering selling my motorcycle  :'( i really don't want to, but it may have to go.

On a positing note, the steppers for my CNC arrive tomorrow. i may be able to do a test run of the CNC at some point :D it will be great to see and hear it move, finally. perhaps it will inspire me to continue on.

I have a pre-booked job for my CNC already. :D a woman in the area, that i know, would like some sort of sign made.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on May 30, 2017, 01:04 am
What about a tarp. Not resting on the camper, but situated just over it at an angle. During the winter just put some heaters on top of the camper and it will keep the tarp above freezing so the snow will melt off, or, alternatively cause a really neat bon-fire ;)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 30, 2017, 01:31 am
What about a tarp. Not resting on the camper, but situated just over it at an angle. During the winter just put some heaters on top of the camper and it will keep the tarp above freezing so the snow will melt off, or, alternatively cause a really neat bon-fire ;)
the neighbors are already questioning my sanity with the camper with a big hole, and some mystery piece of equipment. i can't imagine what a tarp for a tent over the camper would cause them to think ;)

my plan is to build a mild-slope hip-roof with 2 X 4 rafters, and 1/2" plywood sheathing. both are far stronger than the 1/2" thick rafters, and no plywood sheathing under the thin aluminum skin that it has right now. then the commercial grade rubber roof adhered directly to the plywood will make it far stronger than it currently is, by far. the rubber roof is about $200, plus about $125 for the adhesive, and a bunch for the plywood and rafters. i guess it is less than a grand, but i will be shoring up the walls with 2 X 4 studs, 2' oc. then the new isolation, and interior paneling, will likely come out to about a grand, to refurbish a 1988 camper. fortunately the steel frame is still in good shape, though the tires are a bit rough.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Henry_Best on May 30, 2017, 06:40 pm
Will the camper's suspension take all that extra weight?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on May 30, 2017, 09:01 pm
it is a 29' camper with dual axles, and as i am taking out all the interior walls, and only putting back one wall, the weight savings should make up for it. also, the water and holding tanks will all be kept empty, so that saves weight too. at some point, i will have to take out the stabilizer jack stands, and weigh the tongue weight to make sure the front isn't too light by having the CNC in back.

as far as weight from the new wall support and roof, all i can do is hope. ;)
chances are, it likely won't move much. when i am able to buy a house of my own, it will be towed there, and be parked. (the new neighbors will love me ;) )

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 03, 2017, 05:49 pm
I have installed the new stepper motors onto my CNC. they spin freely (no power applied), and no binding at all. now i just have to wire up a test rig to verify everything moves as it should. I have the motors wired bi-polar parallel to take advantage of the extra holding torque. I understand it will draw more current, but presumably my stepper drivers can take it, if china didn't screw me over on the ratings.

I don't have any limits wired yet, but that should be easy later. my primary interest is to establish the lead-screw rates so i can make notes for setting things up later.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 04, 2017, 12:28 am
well, my CNC moves! :D
I haven't established the settings yet, as i just got it hooked up enough to test it. it moves slowly, but it is also only running on a temporary 18V 20A supply. i have 36V supplies on order. i could also play around with the micro-stepping settings to see what works best, though that may be better to wait for the PSUs to arrive.

but it is great to see it moving! :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: MAS3 on Jun 04, 2017, 12:47 am
Did you also order the ear plugs ?

Don't forget those.
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 04, 2017, 02:54 am
Post pics and vids. The story aint as good without pics and vids.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 04, 2017, 11:51 am
Did you also order the ear plugs ?

Don't forget those.
I have over-ear hearing protection, but it wasn't necessary for the test run. the router is not attached yet.


Post pics and vids. The story aint as good without pics and vids.
my camera doesn't do video. my dumb phone does, but it is kinda crappy. i will see what i can do later on today. i can do some pictures too.
as the tarp still covers the back portion of the camper, i will need to drag in some lighting to take a video.

I have to do some more demo on the camper internals, but i will leave the test rig hooked up, as i still need to take some notes on a few things (and a video).

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 07, 2017, 12:25 am
crud, forgot to make a quickie video with my dumb phone...

anyway, i have about 90% of the internals of the camper torn out. bit of an ugly smell when i pulled the toilet off the floor. plugged the hole with a wad of fiberglass isolation, for now. i haven't used the camper for a couple years, so i hadn't figured on the black-water holding tank still having... well, you get the idea. if the tanks weren't mounted with flanges between the floor and the steel frame, i would have dropped the tanks right out.
so what's left to tear out? well, the kitchen still needs to go, as i plan on turning that end of the camper into a tool locker of sorts. (yes, i have a lot of tools) once the walls and cabinets are torn out, i have to remove all the interior paneling, and the old insulation. then i can start rebuilding :D

all i can say, i hope i have the walls shored up and the new roof put on before winter. with no inner walls and cabinets, right now there is very little load support for the roof. one particularly large dump from a bird flying over could fold it all up :o

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 07, 2017, 04:33 am
Should just leave the hole i need the floor. When you gotta go, you gotta go.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 07, 2017, 09:41 am
Should just leave the hole i need the floor. When you gotta go, you gotta go.
yeah, but i don't want to break a leg by accidentally walking in to the hole. if i have to go that bad, i could just open a window ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 10, 2017, 11:31 pm
slight revision in my camper re-structuring plans. rather than re-studding the walls, i will just re-panel them. this is due to cost issues. but i will still rebuild the roof, as it really needs it now that the interior walls and cabinets are removed. i will be installing 2 walls inside to aid in roof support for snow load.

after i got the remainder of the back half of the camper stripped out, i realized that other than a couple spots, the structure in the walls is just fine.

I plan on having the CNC control computer in a separate room from the CNC, so that i can have some sound insulation while i babysit the computer. for setup, i will use a wireless pendant.

i noticed something interesting today. the rear jack stands under the camper frame are now loose. apparently the weight loss was enough that the suspension lifted the frame off the stands.

on the Arduino front, i have been thinking about a useless, but neat project that was inspired by the "energy flow" screen on a hybrid car. as i am going to use both the AC, and 12Vdc circuits in the camper/CNC shed. it would look neat to have a screen display the power flow status of my camper. mainly for AC power detection, and DC charge/discharge status, while also integrating a solar charger for the battery, for backup. not sure that it is a practical project. just something that looks neat.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 11, 2017, 03:42 am
Who doesn't have a phone that takes pictures nowadays? They give them away for free....
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 11, 2017, 08:32 am
the problem wasn't what to take pictures with. the problem is remembering to take pictures, before i am back in the house, and exhausted. i will try and remember to take my camera out. maybe at least seeing my camera will remind me to use it ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 11, 2017, 04:36 pm
(http://tjfserver.ddns.net/misc/cnc_in_camper_800-600.jpg)

I took this picture before i did anything today. it is of the CNC inside the camper. the windows are blacked out due to the tarp still on the back of the camper. my CNC test rig can be seen on top of the CNC table.

later today, if the heat isn't too bad in the camper, i will try to hook up some limit switches, and program in the machine settings. it quickly became clear that the computer monitor i wanted to use was defective, as it kept snapping, and disturbing the image. the factory limits may actualy still work, despite what i thought by visual appearance. i will have to test them. if they work, they are already configured as a per-axis E-stop loop, so i will still need to install Home sensors for LinuxCNC to function correctly.

right now, i am sitting in front of a fan to cool off a bit before heading back out. i think the temp inside the camper is double what it is outside.
if i get the limits working today, i will try and remember to take a quick video with my cell phone. the router is not attached yet, but i could still give it a run-through, to make sure the settings and limits are correct.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 11, 2017, 05:09 pm
Wow; tight fit.

What have you thought about as far as dust abatement? It's a small space and when that thing gets chooching away I imagine walking around near it will be rather unpleasent.

Also, you gotta look on Craigslist for a small window ac ;)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 11, 2017, 05:20 pm
Wow; tight fit.

What have you thought about as far as dust abatement? It's a small space and when that thing gets chooching away I imagine walking around near it will be rather unpleasent.

Also, you gotta look on Craigslist for a small window ac ;)
I will likely make up a dust boot to attach to some sort of dust-collection. something with a 4" port.

as for an ac, i have an old one that still works, i just haven't installed it yet. currently the camper has no power, so to test the CNC i have to run an extension cord. so no ac just yet.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 11, 2017, 08:15 pm
Sadly, the CNC doesn't work for some reason. i suspect it is the breakout board, as i found a staple laying across the solder joints. it likely got there when i was doing some demo and clean up this morning. the CNC hasn't worked since then.  :smiley-cry:

On the bright side, i bought two cheaper breakout boards, as backups. though they are common anode, where the one i have wired up is common cathode. so after i cool down a bit, or some other time, i will have to switch out the boards, and cover them from debris while i work on the camper.

you can say "it happens to the best of us", but it is still a stupid mistake.

but i was able to test the limits, and two work (X and Y), but the Z limit is open in any position, so i will have to fix that. still on my list is to lube the screws and slides, but i haven't bought any EP1 grease yet (recommended by someone in the CNC Zone forum, that i trust).

~Travis
Title: Re: what i have been up to, thus far.
Post by: larryd on Jun 11, 2017, 09:24 pm
Don't recommend applying grease to surfaces, they will get all gummed up.

Maybe a very very light film of spray silicon, but only after you prove it is necessary.
.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 11, 2017, 10:22 pm
a maintenance manual from the company that made it recommends that i clean and grease the slides and screws every day (of use). this was more or less backed up by someone at CNC Zone.

excerpt from the manual:
Quote
DO NOT USE SILICONE AS A LUBRICANT. DOING SO MAY CAUSE
DAMAGE TO THE MACHINE.
with all the grease, and WD40 to clean (OEM recommend) the screws and slides, i am kind of thinking of painting the floor with epoxy garage floor paint, just to ease clean-up.

~Travis
Title: Re: what i have been up to, thus far.
Post by: larryd on Jun 11, 2017, 11:19 pm
That's the opposite of my manual, go figure.
I do not understand why they say silicone will damage things.

I am sure you will find grease will turn into mud as the cuttings mix with it.

Cleaning after every use will help, but laziness will soon raise its ugly head.


.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 11, 2017, 11:32 pm
That's the opposite of my manual, go figure.
I do not understand why they say silicone will damage things.

I am sure you will find grease will turn into mud as the cuttings mix with it.

Cleaning after every use will help, but laziness will soon raise its ugly head.
i don't know. maybe silicon reacts with something, or it can't take the pressure. the company website is on the fritz, so i can't verify with them.

I strongly agree with what you say about the grease collecting dust and cuttings, and turning to mud. my first thought was to give everything a good rub down with 3-in-one oil, but that was quickly shot down by the good folks on CNC Zone. apparently the wood dust absorbs the oil and the machine runs dry. not sure how grease is supposed to be better.

but i figure, when i know not, the manual, and those that do know must be correct.

i should really take a picture at some point of my test rig controller setup. it may be a contestant for the wall of shame ;)
I just threw it together to verify the machine worked. (it did, up until a single staple killed it)
wires are willy-nilly, though somewhat color-coded. no regard in any way toward signal noise isolation.

when i wire up the controller for production use, i will do better. ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 17, 2017, 09:54 pm
i have had a frustrating weekend so far. i replaced the CNC breakout board, and everything works, sort of. it is very noisy in one direction, and smooth as silk in the other. this is on all axis. and after i use them for a bit, they stop moving and just make noise.

very frustrating. i put some feelers out for ideas in the CNCzone forum, as well as the LinuxCNC forum, so i am not really asking for help here, just venting i guess.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 22, 2017, 09:21 pm
well, the problem i was having above was the cheap Chinese stepper drivers i bought. they couldn't handle the current apparently (heard it is common for them, after the fact of course). so i had to spend more money on some slightly better, more reliable drivers from Leadshine (DM542E).

I also got the AC wire to power up my CNC camper today, so this weekend i may have proper power, rather than an extension cord :D

as i have 12Vdc power in the camper too, i got some 12V - 36V boost converters to power the steppers (one 8A model for each axis). i actually got those a while back, but i don't remember if i mentioned them or not.

I seem to have a lack of wire for the power side of the wire hookups, so that may slow me down a bit this weekend. i must have some 16 - 14 AWG kicking around somewhere.

I received my router mount from CNC Router Parts, and i must say, it is nice and strong looking. i have half a mind to polish it, and put a coat of clear enamel paint on it ;)

i will take some pictures this weekend, after i make some progress.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 23, 2017, 03:04 am
Hmm. I thought you could set the current to steppers lower that what they need.... for testing, at the sacrifice of acceration, top end speed, and holding torque. I have a nema 23 motor that i am planning to use as the z stage in my printer but it wants 2.4amps and the duetWifi only outputs 2.2 amps... i had planned to set the digipot to around 2amps as the z stage only had to move relatively slowly.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 23, 2017, 10:08 am
According to a post on CNCzone, the drivers i have state a rating of 5A, but actually have a real max of 2.?A. i had to lower the velocity and acceleration way down to keep the steppers from stalling, and they could still be stopped with very little pressure from my finger on the axis.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 23, 2017, 10:18 am
in regards to the stepper driver issue on CNCzone:
http://www.cnczone.com/forums/servo-motors-drives/258896-hy-div268n-5a-dipswitch-settings.html (http://www.cnczone.com/forums/servo-motors-drives/258896-hy-div268n-5a-dipswitch-settings.html)

http://www.cnczone.com/forums/stepper-motors-drives/186930-tb6600-drive-ebay.html (http://www.cnczone.com/forums/stepper-motors-drives/186930-tb6600-drive-ebay.html)

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 23, 2017, 02:25 pm
Yep, in order to get 5amps out of them you'd have to put the board in the freezer. But, I think there might be something wrong if you cannot move your gantry with no load at lower current....
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 23, 2017, 03:08 pm
the screws and slides (other than Y) are all enclosed. i have a general manual PDF from the company that made the CNC. i suspect i will have to have to do some very minor disassembly to really clean and lube all the axis. it was recommend to me to clean with WD40, and lube with EP1 grease. i suspect it could be a dirty job, cleaning and lubing after every day of working it. fortunately, i have access to some full Tyvec suits.

the CNC did set for a little while before i bought it.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 24, 2017, 10:11 pm
well, i just got around to bench testing the new converter/charger for my CNC camper (more current, and more reliable than my old one), and after verifying the AC input voltage, i connected power to the converter, and was startled by a loud beep, that was followed by 3 loud pops, and copious amounts of smoke. i sent a message to the seller, we shall see what kind of response i get.

so, that's how my weekend has gone so far.

i did get the new stepper drivers installed, as well as the 12V to 36V boost converters (not connected to the converter/charger yet), but now i am not exactly able to test them. maybe tomorrow i will rig up my old converter to try it all out.

I am a little furious about the brand new converter/charger though. now i can't even work in my camper as the smoke is so thick.

~Travis
Title: Re: what i have been up to, thus far.
Post by: MAS3 on Jun 24, 2017, 10:21 pm
Nice.

If you blow capacitors, i'd better be loud and with lots of smoke.
If you do it, do it right.
Well done.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 24, 2017, 10:23 pm
Nice.

If you blow capacitors, i'd better be loud and with lots of smoke.
If you do it, do it right.
Well done.

it is a 60A converter/charger, so i assure you there was LOTS of smoke. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: TKall on Jun 24, 2017, 10:45 pm
If you are charging big batteries be careful.  I had an 8d on my boat explode...wow.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 24, 2017, 11:50 pm
so far, this CNC project just seems to be becoming one endless set of failures, one right after another. unfortunately, i have invested far too much to give up on it now though. i highly doubt the guy i bought the converter from will go good on it.  >:(
so now i am out a bunch of money...

perhaps i should have just purchased the AC to DC switching supplies, rather than trying to use the 12V source i thought i had available.

the only fortunate thing is my CNC was not connected to the power yet.  :o

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 25, 2017, 08:19 am
travis, if you need high current power supply's for cheap, look for server power supplies...

12v 100amp supplies can be had on amazon for ~40 bucks.


Did you buy the converter from aliexpress or ebay?  ebay almost always finds in the buys favor in disputes... either way i would open a dispute right away and ONLY CLOSE IT once you are completely satisfied. If they make good on their end you can close the dispute with no harm done..
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 25, 2017, 01:16 pm
it's not just a power supply, it is part battery charger. it doesn't just run my CNC, it runs the camper lighting as well. the battery is so i can still see (at night) if the power fails.

if i had the money for power supplies at this point, i would buy some 36V 10A ones, and scrap the idea of powering the CNC off the 12V feed.

thanks for the reminder on starting a case with eBay, i had forgotten about that. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 25, 2017, 04:45 pm
well, i hooked up my old converter/charger, and the CNC is alive again! :D it has far more power now, no stalling, and it is smooth and quiet. now it is just a matter of getting the failed Z limit switch to work, and set up some home switches.

I think i have the steps per revolution setup correctly. the steppers are standard 1.8deg, and the drivers are set to 1600s/rev, so supposedly, i just use the DIP switch chart values as is, and set to 1600s/rev in LinuxCNC. once the limits and homing switches are figured out and connected, i can home the axis, and move them to the far limits so i can set the travel in the software (software limits). supposedly, i can just use homing switches, and the software limits, but just in case, i want the hardware limits working.

then it is a matter of loading a simple g-code job into LinuxCNC, and see if i can take a video of the dry-run. oh, wait, maybe i should clean and lube the slides and screws before i run it too much.

anyway, i am getting rather excited to get this fully operational.  8)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 25, 2017, 09:25 pm
well, i got limits for 2 out of 3 axis, and i lubed the slides and screws. so i feel like i got something done, at least. i still have the homing sensors to build, and install. i could machine out some sensor holders, but  without homes, LinuxCNC won't run the program. i tried milling with my mini CNC, but the spindle kept stalling with even a little bite. powerful, huh? at least i can still use the Laser feature.

but, as it is too hot for my brain to function in the camper, i decided to call it a day, before i made any mistakes.

oh, at some point i am going to have to buy some drag chain, as the cables almost got pinched when i was cycling the axis after lubing them. not sure how to measure the length, as i have not used them before. but with these long axis, they are apparently quite required.

~Travis (dang, forgot to make a video...)
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 26, 2017, 04:49 am
you want to put the drag chain diagonally from one corner where the wires enter the drag chain. Amazon has got a wide selection, and you can just join the cable togheter if you need longer pieces.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 26, 2017, 09:18 am
i don't think a diagonal drag chain will work on a machine this big. the far reaches would be about 6', or more.
i was thinking one across the top of the gantry to feed the Z axis, and one beside the gantry, along the Y axis, to feed the X and Z axis.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 26, 2017, 10:39 pm
(http://tjfserver.ddns.net/misc/0004.jpg)
I got the router mount installed :D
Not much else though, as it was fairly hot in my camper by the time i got out of work.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 30, 2017, 12:06 am
Looking good! I have been debating for a while, but I think if i am going to choose between a CNC machine and a milling machine im going with a milling machine :D Once i get enough money for the CNC after i have the milling machine i can MILL PARTS for the CNC machine, like that mount for instance. Why buy it for $50 when you can make it for a little under $300 :D.

Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 30, 2017, 12:14 am
why not a CNC milling machine? ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 30, 2017, 12:49 am
Because, that is definitely out of my budget :D
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 30, 2017, 12:59 am
i think i heard this in a song a while back, "If your dreams don't scare you, they aren't big enough".

I thought a small CNC router was way outside my budget, but an opportunity presented itself, and i now have a machine twice the size i ever thought i could afford.

dream big, then find ways to ensure they happen. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jun 30, 2017, 01:58 am
i don't know, 11k is a lot of money. I also have dreams of buying a Tesla. More of those dreams than cnc mill dreams. Plus, i think it would be a bit of a head ache having to spend a lot of time on the computer every time you wanted to use the mill..
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jun 30, 2017, 10:56 pm
Not sure that i would want a Tesla car (or do you mean Tesla coil?). i kind of like the diversity of being able to stop in nearly every town and get more fuel. what do you do with a Tesla? bring a big generator in the trunk? ;)

anyway, i have the CNC seemingly fully operational. i used double-stick foam mounting tape to temporarily mount a reed switch and magnet for the Z axis home sensor. i then performed an auto home sequence, and was delighted when it homed the Z. the Y axis stepper was wired reverse, so i fixed that, and re-homed. it worked!

sadly, i forgot to charge my video camera battery, and i was so caught up in the excitement of the moment that i neglected to take a video with my phone of it auto homing. it moves slow, but neat to watch.

tomorrow, i will try a dry run of a test G-code program. if i remember, i will take a video, with something. I don't do YouTube, so i will pop it on my personal server, and hope for the best.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TKall on Jun 30, 2017, 11:10 pm
Good luck Travis.  I hope it goes well.
Tom
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jul 01, 2017, 12:57 am
How often do you drive more than 300 miles in a day?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 01, 2017, 10:04 am
i guess it is just the idea that if i need a charge, for whatever reason, it's not as accessible as gasoline. personally i would prefer a hybrid, over a full electric. my mother just got a Toyota RAV4 hybrid. it has good power, and yet it gets about 38MPG, even with her high speed takeoffs from a stop. much more power than my Chevy Spark (all gas), and better MPG too (35MPG).

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 01, 2017, 08:22 pm
well... the CNC works, and i took a short video, but the definition of the small movements aren't very clear. though you can hear the large position changes. I had to shorten the video a lot, as my video editor seems to like exporting large files (97MB  :o  :o  :o )

but here it is, please don't crash my server from too many downloads  :o

(EDIT)
I reduced the file size.
Windows Media (http://tjfserver.ddns.net/misc/CNCtest4.wmv)
Quicktime (http://tjfserver.ddns.net/misc/CNCtest4.mov)

Hope that is better :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 02, 2017, 11:44 am
All that talk of me posting a video, me making and editing the video, then working to reduce the size of the video (down to 1 or 2MB i think), and no comments by anybody? ;) Sheesh, i might as well have taken a video of my cat. ;)

i agree, downloading a video isn't as easy as streaming from YouTube. but i don't do YT, so please forgive me on that issue. (many years ago, somebody stole my video, and took credit for it. no more YT for me)

anyway, when i get the control electronics housed in an enclosure, say nothing about fixing the rat's nest of wiring, and installing some drag chain, then i can mount a router and take a video of it milling something , so there is a better visual.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jul 02, 2017, 02:47 pm
my comment on the vide is that it wouldn't download... also, youtube is very strict about copywrite...  besides, even if they did steal it it's a video of a cnc machine not a theatrical masterpiece...
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 02, 2017, 02:52 pm
my comment on the vide is that it wouldn't download... also, youtube is very strict about copywrite...
Hmmm, very strange. can you access my server (http://tjfserver.ddns.net/) at all? maybe my firewall has your IP address blacklisted for some reason.

very strange indeed.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 02, 2017, 03:02 pm
i temporarily cleared the blacklist file for the firewall, maybe it will work now.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Jul 02, 2017, 03:52 pm
Hi, mate.
Just downloaded the wmv file, no problems.
Play too, nice sound isn't it when you hit the button and the stepper squeal greats you ears.

Tom... :) :o :o :)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 02, 2017, 06:09 pm
well, i am glad it works :D

I could have put it to music, but why make others suffer through my music choice. when i do one of an actual work piece in the future, it should be more interesting when you can actually see what it is doing. though it may have a dust shoe on it by then. that is, if it ever arrives. it came from China, hit the US on the east coast, where i am, traveled over to a state on the west coast, and now it is back on the east coast, in my state. kind of a round-about route to get here.

but anyway, i have built one of the two doors to cover the hole in the side of the camper. after lunch, i hope to get the second door built, and possibly installed. not sure if i will have it fully water tight today, but we will see.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 05, 2017, 12:59 am
Well, today i have temporarily disassembled the controller portion of my CNC so that i can build it into a protective enclosure. as i am nearing the point of being able to use the CNC, i thought it best to see to it that dust and what-not does not harm everything.

in other news, i figured out how to create G-code from Eagle circuit boards :D
the window for the generator is too tall to display on my laptop screen, so i have to set my screen rotated 90 degrees, and hold my laptop sideways to use the bottom of the program. kind of a pain in the butt, but whatever. it works :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Jul 05, 2017, 05:47 am
Hi mate,
Hope you have an accessible E-Stop button fitted?

Tom... :)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 05, 2017, 10:44 am
for the test rig, i had none, but on my wireless pendant there was one that i had a ready finger on. when i finish up the production controller, i will have two. one on the machine, in case i get my arm wound around the router, and one by the control computer, as well as the pendant E-stop.
I plan on building a wall between the computer and the machine to provide some noise insulation. perhaps i will include an E-stop by the door as well, so i can slap it on the way by when i have to run in to prevent some sort of carnage. they will all be wired in a normally-connected loop.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 08, 2017, 10:55 pm
I started re-wiring my CNC control wiring in the interest of noise reduction, and making it more tidy (http://forum.arduino.cc/index.php?topic=488005.msg3330691#msg3330691). as i needed current-limiting resistors between my control board, and my stepper drivers, i grabbed a piece of perf-board, and made up a go-between, rather than soldering inline and using shrink tube. mainly because i ran out of shrink tube. but as the control board has one ground connection available, i used the board to tie the grounds together. that way i have just one ground, and the separate signal wires to the control board. i had forgotten how tedious and lumpy perf-board soldering can be, at least when i do it. ;) i look forward to being able to use a milled circuit board (http://forum.arduino.cc/index.php?topic=488140.0) for my circuits.

I have also sort-of installed the double door in the side of my CNC camper. before i got very far, the clouds opened up with buckets of rain, thunder, and lightening. so i put the tarp back over the rear of my camper, and went inside.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jul 09, 2017, 03:15 am
what drivers are you doing using?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 09, 2017, 09:07 am
Leadshine DM542E (http://www.americanmotiontech.com/products/productdetail.aspx?model=dm542e-budget-stepper-drive-50v-4.2a)

I was using some cheap ones from China, but they were poor quality. these were recommend to me, and i must say, they work pretty good. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Jul 09, 2017, 09:16 am
Leadshine DM542E (http://www.americanmotiontech.com/products/productdetail.aspx?model=dm542e-budget-stepper-drive-50v-4.2a)

I was using some cheap ones from China, but they were poor quality. these were recommend to me, and i must say, they work pretty good. :D

~Travis
When you look at their ONLINE price, a definite good purchase.
Tom.... :o :o :o :)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 09, 2017, 07:31 pm
When you look at their ONLINE price, a definite good purchase.
Tom.... :o :o :o :)
I would recommend them to anybody with a similar setup :D

so, today i finished, or rather i nearly finished installing the door. i forgot to seal down the sides of the door. but to my defense, i was experiencing the beginnings of hyperthermia (not to be confused with hypothermia). my head is throbbing, my mouth is dry, and i am quite dizzy. but i have had plenty of water, and i am sitting in the A/C now, cooling down.

i realize 82degF isn't as hot as other places in the world, but it still made me ill.

so anyway, hopefully my camper is fairly water-tight, for at least a mild rain, i hope. after i cool down, i may give it a good look, just to be sure.

I also hope to progress a little further on the CNC control wiring. in favor of the home and limit switch wire that used telephone wire for a temporary solution, i bought some shielded 3-con stranded wire, that should be arriving tomorrow. so i can get that portion wired. i also ordered the drag chain. so slow-boat from china, i may see it next month. ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 09, 2017, 11:29 pm
i got the CNC control all wired up, except for the limits, as i still need the wire. the wiring had the best of intentions to tidy up, but that failed. though i did get the stepper power wires away from the logic wires. as for my go-between circuit to tidy up the signal wires, i remember now why i hate perf-board circuits. i think my first PCB mill will be a new go-between, with some screw terminals as well. the signal wires are hard-soldered right now. I used the twisted pairs from some old CAT5 for the signal wires, but i don't like solid wire. has too much of a tendency to bend once and break, when least expected.

my next task is to mount the backer board into the metal cabinet. as well as mounting some connectors in the cabinet for the stepper wires, and the limits/homes.

it was great to have a moving machine during the test phase, but it seems to be taking a while to move everything into production phase, and get it moving again.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jul 10, 2017, 12:16 am
looks like a deal, there was someone else looking for a driver capable of driving a stepper that consumed 4 amps... i'm not sure if he considered 35 bucks to be expensive though. Looks pretty nice. I bet it makes even louder music :D
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 10, 2017, 10:37 am
looks like a deal, there was someone else looking for a driver capable of driving a stepper that consumed 4 amps... i'm not sure if he considered 35 bucks to be expensive though. Looks pretty nice. I bet it makes even louder music :D
the machine is quiet at slow speed, but when i makes a rapid run, then the music starts. :D

once the controller is re-wired, and everything is good to go, i will CAD up a larger test run, and run it with no router again (the router will drown out the music).

but more than just music, when this thing moves fast, you can feel it is the camper. :D

82 is nice! i regularly work outside when it is 90-95 and humid
i tend to prefer low to mid 70s while working. i have worked on a roof, installing metal roofing (black unfortunately) during triple-digit heat. i tried a contactless thermometer on the metal, and it was 132degF!  :o  :o  :o
imagine kneeling on that by accident  :o  :o  :o

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 15, 2017, 09:55 pm
I got the CNC controller wired up, and i just have to install it into the metal cabinet. then i just have to tidy the wires up to give it a cleaner appearance, and make it easier to work on, if need be.

oh... i just remembered that i forgot to work in an E-Stop loop...

so, i almost have the CNC controller wired up... :D

i used twisted pair for all the stepper logic lines. i will bundle those up with some plastic spiral-wrap. for the stepper motor wires i used shielded wire, with the drain connected to common ground. the wires for the hall-effect home sensors is also shielded, with a grounded drain (one side only, as i have read).

pictures will follow after the wires are a little more tidy. :D

The drag chain has not arrived yet. seems to be still sitting somewhere in China.
I have an idea on how i want to mount that, but i won't know exactly for sure, until i have something to work with. more than likely i will install angle aluminum behind the gantry to support the chain, and then something off the top of the Z axis to hold the other end. i will do something similar along the Y axis travel.

I hope the shielding in the stepper drive wire, and the home sensor wires is enough for the router power wire that will be run right next to it in the drag chain.

the Hall sensor is open-collector. will the pull-up resistor way back on the breakout board (unknown value) be enough to swing the hall sensor many feet down the wire? or should i use an additional pull-up right off the hall-sensor? seems like a long distance to me.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 19, 2017, 09:59 am
Ok, so i thought i would show off some pictures from the house my father and i have been renovating. (customers house)

as i didn't want any complaints about clogging the arduino server with unrelated pictures, i posted them on my own server. the gallery can be viewed HERE (http://tjfserver.ddns.net/smf/index.php?action=gallery;cat=6). i am pretty sure you don't need to be a forum member to view the gallery.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Jul 19, 2017, 10:07 am
Hi,
Nice job, but will the client want the woodworking gear in the middle of the kitchen floor?

Tom... :) :) :) :)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 19, 2017, 10:10 am
probably not permanently ;) but it is a convenient location to setup, as that is where the electrical is run, so far (home-owner is doing the electrical).

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jul 20, 2017, 02:31 am
yikes. Nothing worse that homeowner electrical work. They never get the wires tightened enough or the right way around the screws!
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jul 20, 2017, 02:35 am
i'm surprised people stil say for fully custom cabinets... looks like high quality craftsmanship though..
Title: Re: what i have been up to, thus far.
Post by: TKall on Jul 20, 2017, 02:37 am
sure don't want to fall on the stairs.  I might suggest tempered glass(shatterproof) in that window.
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Jul 20, 2017, 03:16 am
probably not permanently ;) but it is a convenient location to setup, as that is where the electrical is run, so far (home-owner is doing the electrical).

~Travis
You can't do that in Australia, that is what sparkies are for.
Electrical installation has to be to code and done by qualified Electrician and Signed Off on completion. (Paper trail)
Although it seems we got a huge batch of Chinese manufactured Mains Cable that it not to spec as well as Highrise building cladding that has been installed.
Tom.... :o :o :o :o :o :o
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jul 20, 2017, 04:23 am
In the united states it varies from state to state but here, homeowners can do they're own electrical work if they want, but it stil has to be permitted and inspected. But plenty of people do work without permits.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 20, 2017, 11:12 am
i'm surprised people stil say for fully custom cabinets... looks like high quality craftsmanship though..
a lot go for store bought particle-board cabinets (crap), but a surprising number go for custom, just for the longevity of the material, and the ability to have the cabinets fit the room, without filler pieces.

sure don't want to fall on the stairs.  I might suggest tempered glass(shatterproof) in that window.
the window was there before the stairs were, but yes, we installed tempered glass, as per code.

You can't do that in Australia, that is what sparkies are for.
Electrical installation has to be to code and done by qualified Electrician and Signed Off on completion. (Paper trail)
Although it seems we got a huge batch of Chinese manufactured Mains Cable that it not to spec as well as Highrise building cladding that has been installed.
Tom.... :o :o :o :o :o :o
i do remember reading something to that effect. i do my own electrical, of course. but i think my knowledge is a bit better regarding wiring, than some home-owner work i have seen. even my own father ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 22, 2017, 12:50 am
how many people have hear of Sugarloaf Mountain (http://www.sugarloaf.com/) in Maine? had to take some measurements for a job in a condo there. thought i would take a picture on my "stupid" phone.
I love my job sometimes :D
http://tjfserver.ddns.net/smf/index.php?action=gallery;sa=view;pic=30 (http://tjfserver.ddns.net/smf/index.php?action=gallery;sa=view;pic=30)

(never actually skied there... a little too "upper crust" for me ;) )

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 24, 2017, 12:18 am
well, i have my CNC back in working order. still have to tidy things up before pictures. right now there are a lot of zip-ties holding the cable drag chains in place, while i come up with some attachment fixtures. i am still using the test homing sensors, as i wanted to verify that the system was returned to working order before i change anything. just makes it easier to debug.

I also have to energize the router power cable so i can make sure that it does not cause EMI on the home and stepper cables. actually, there are a variety of issues i have to get to, but i don't want to overload my mind with a huge ToDo list just yet. ;)

I even managed to find time for a nice motorcycle ride. i don't know how far it was, and really i don't care. it was just nice to be out on two wheels. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Jul 24, 2017, 05:05 am
i am still using the test homing sensors, as i wanted to verify that the system was returned to working order before i change anything. just makes it easier to debug.


No! No! No!   Travis Maaate, that is too logical, you don't do that sort of thing in this forum..

You might learn something...

Tom.... :) :o :) :o
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 24, 2017, 10:22 am
No! No! No!   Travis Maaate, that is too logical, you don't do that sort of thing in this forum..

You might learn something...

Tom.... :) :o :) :o
:D if it wasn't early in the morning here, i would have burst out laughing. ;)

as my life is generally filled with a lack of logic (aside from the electronic kind), i take that as a compliment. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Jul 24, 2017, 01:13 pm
This may be a good time to shop for leds. You could have extra lighting to beat the winter gray ready before Halloween snow.

I did get my $2 led disks working cooler by blinking them fast, 1ms ON/OFF and still they're too bright to look at without seeing afterimages. I switch power between the two (a PORT write, both switch in the same cycle) to have the least draw, I might be able to power 8 disks with a 1 Amp 12V supply.

Each disk has 36 led junctions all wired up for 12V. I used cheap (paid $5.something for 50) MOSFETs, 1 per disk.

If you have a Harbor Freight nearby, think about the free or on sale many-led flashlights as light sources. You only need to replace the batteries and hack a mount to brighten a dark corner.

See what deals you can get while you have weeks to get them. A little here and there, you could build a nice lighting system.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 24, 2017, 08:06 pm
This may be a good time to shop for leds. You could have extra lighting to beat the winter gray ready before Halloween snow.

I did get my $2 led disks working cooler by blinking them fast, 1ms ON/OFF and still they're too bright to look at without seeing afterimages. I switch power between the two (a PORT write, both switch in the same cycle) to have the least draw, I might be able to power 8 disks with a 1 Amp 12V supply.

Each disk has 36 led junctions all wired up for 12V. I used cheap (paid $5.something for 50) MOSFETs, 1 per disk.

If you have a Harbor Freight nearby, think about the free or on sale many-led flashlights as light sources. You only need to replace the batteries and hack a mount to brighten a dark corner.

See what deals you can get while you have weeks to get them. A little here and there, you could build a nice lighting system.
I actually was planning on using flat panel LEDs in my CNC camper. i found some huge ones, 12V, on ebay, but they timed out, and i haven't found any more since. though i don't know how much i will use the CNC camper in the winter. no heat out there...

now, down in my basement shop would be a good place for supplemental LED lighting. no natural light at all, and i will likely put my Ham station down there, when i set it up. probably a mixture of bright white LEDs, some blue, possibly a few ultraviolet, but not enough to burn my eyes out. I have a UV-B CFL light down there, but it does cause some eye-strain. I have been thinking of eventually moving the Server rack from down there, to up in my bedroom. it takes up too much room down there. not sure if the rack will go up the stairs easily though... may be easier to have the Ham station up in my room...

anyway, both are still a good location for "false summer" LED lighting.

right now, most of my monetary focus is driven toward getting the roof set for winter on my CNC camper. right now, there is no way it would take much of a snow load. but LEDs are cheap, so...

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 24, 2017, 11:33 pm
Well, due to the "major influx" of new members on my personal forum, i opened up some forums to guest viewing. still have to be a member to post though.

for what it's worth anyway. i am sure my website is a real must see for everyone. ;)

I mean, 3 members, including myself. ;) (gained one a few days ago :D )

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Jul 25, 2017, 06:15 am
Just watch for sales that won't be there last minute. You can get ready to build in leisure if you tortoise it along while there's time.

It's like splitting wood. You don't wait till October do you?

About the CNC camper. You could suit up and stay out there for hours. But what are the chances that when you go to leave a snowdrift has piled up against the door? Well, not real high but not exactly unheard of either!

Did you get a heat wave in the last week? I think we hit into the 90's for a couple days, back down to daytime 80's now and chilly at night.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 25, 2017, 10:25 am
Just watch for sales that won't be there last minute. You can get ready to build in leisure if you tortoise it along while there's time.
very true.

Quote
It's like splitting wood. You don't wait till October do you?
nope, buy it all cut and split :D
still have to work to get 10 - 14c down into the basement though.

Quote
About the CNC camper. You could suit up and stay out there for hours. But what are the chances that when you go to leave a snowdrift has piled up against the door? Well, not real high but not exactly unheard of either!
true, i have seen snow drifts change in minutes, if it is windy enough.

Quote
Did you get a heat wave in the last week? I think we hit into the 90's for a couple days, back down to daytime 80's now and chilly at night.
why yes it was quite hot last week. yesterday, i think we had a high of 78, and overcast. it must have been cool last night as my A/C stopped working, so i opened a window, and found plenty of cool fresh air, devoid of the nightly farts (always good to get a little fresh air in my room now and then anyway ;) ).

my basement workshop stays fairly constantly cool though, though the humidity is rather high. on my website, on the home of my forum (http://tjfserver.ddns.net/smf/), on the upper right, there is a block titled "Server Rack Monitor" that gives a fairly good temp and humidity reading of my workshop. the APC battery backup below that always reads hot though. but the fan for it does not kick on while AC powered. i have been thinking of adding an auxiliary fan for it though, and just power it from AC.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 27, 2017, 09:48 pm
well, my Kenwood TS-430s (HF Ham radio) arrived. it apparently suffered a rough ride, as it no longer works (or the seller wasn't truthful about it working).  :(

but, i went into it knowing it had electrical problems in various places, and would need an overhaul. but just once i would like a surprise, and have it work perfectly. alas, no.

so, from my research, the solder joints are usually cracked, so i will have to check those. the connectors tend to break loose from the bad solder, and the vias on the final output board tend to need a little TLC. but all the research said it is a great starter HF radio, after it has a good overhaul. so it has the potential to be great, i just have to make it that way :D

I am sure i will be able to give my oscilloscope a good workout. fortunately, i have saved all the bookmarks for the overhaul instructions, and i have both a user and service manual PDF for the radio. only think i am missing, is space on my work bench...

~Travis
Title: Re: what i have been up to, thus far.
Post by: Paul_KD7HB on Jul 27, 2017, 10:36 pm
Do the lights come on?

Paul
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 27, 2017, 10:37 pm
some of them. the meter pegs to the right, and the LCD displays some decimal points.

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Jul 28, 2017, 12:04 am
but, i went into it knowing it had electrical problems in various places, and would need an overhaul. but just once i would like a surprise, and have it work perfectly. alas, no.
The sheer optimism is BLINDING! I need a welding helmet to read stuff like that!
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 28, 2017, 12:19 am
The sheer optimism is BLINDING! I need a welding helmet to read stuff like that!
thought i would try something new for a change ;) that and i got m meds back yesterday :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Jul 28, 2017, 01:05 am
That was a joke, Trav. A very exaggerated premise joke.

Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 28, 2017, 01:14 am
oh, sorry, didn't spot that one...  :smiley-confuse:

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jul 28, 2017, 01:52 am
Me either travis. :-/ A half lit dust box isn't blinding. Good luck. Did you get the CNC going?  I think you said you did, but we haven't seen anything neat made from it yet!

:D
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Jul 28, 2017, 02:18 am
Quote
A half lit dust box isn't blinding.
No, but his optimism is not a half lit dust box hoping that buying old stuff stated as not in good condition will work perfectly anyway.

Have you ever met a 320 lb guy nicknamed Tiny?

Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 28, 2017, 11:34 am
a guy can hope, can't they?

actually it was stated to be better than it is, but i think shipping was unkind to it.

but i still have high hopes that i am capable of fixing it, without too many "extra" parts when done. ;)

but first i have to find my work bench. the clutter seems to be encroaching.

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Jul 28, 2017, 01:30 pm
See Reply #120 for details.

Or in Basucks that would be GOSUB 120
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Jul 28, 2017, 01:50 pm
Quote
Have you ever met a 320 lb guy nicknamed Tiny?
Not to shit on your point, but yes, yes i have. People in the south nickname people the dumbest things.

Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Jul 28, 2017, 04:45 pm
Yup, south of the north pole except the ones who just don't get it but are all geniuses.

Who knew?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 29, 2017, 01:28 pm
i think i may have found a flaw in my oscilloscope, as far as using it with my ham radio repair. the radio goes up to 30Mhz, while my oscilloscope bandwidth goes up to only 20Mhz. if i am interpreting this correctly, if i monitor the RF output (using a RF sampler, and a dummy load, neither is bought yet), then my scope (SainSmart DDS120) will only monitor the lower range of the frequencies (for frequency counter, and signal quality).

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Jul 29, 2017, 01:59 pm
Radio goes up to......
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 29, 2017, 04:38 pm
radio had a broken wire. soldered that back on, and then scanned the boards for bad solder joints, touched up a few that looked sketchy, and put it back together, to find that it now seems to work! :D

so, here i sit, on 10M, 28.385Mhz (listed as a calling frequency), and nobody seems to be talking, so i can only assume the radio works. but then, i am only plugged into a CB antenna (not TXing), which is obviously not the correct antenna, but i assumed it would be good enough for RXing. so what i can assume is the following: radio doesn't actualy work yet, nobody is talking, antenna doesn't work inside the house (does steel roofing block RF, like a Faraday Cage?), or the antenna is so wrong, that it has no gain.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 29, 2017, 09:37 pm
I tuned the radio to 27.185Mhz, AM, and tried sending on my portable CB radio (forgot i have it, rarely use it). it picked it right up. :D :D :D so i have a working receiver. i didn't try transmitting on my ham rig though, as the power supply i am running it on is only 6A, and the rig draws 20 full scale transmit. don't want to burn out the PSU. but it receives :D

so now i can work toward building a proper antenna. I was gonna go with a random wire, with tuner, given the limited options for suspending an antenna. but now i am not sure. it would be better to have a tuned antenna, and as i plan to stick around 10M with this radio, so i would need a dipole of about 16.5ft, if i calculated right (468/28.4Mhz).

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Jul 30, 2017, 12:27 am
That would be 20A with the gain turned up full? You can't turn it down?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 30, 2017, 01:27 am
 :o Hmm, i knew that... didn't think of it at the time, but i knew that.

sometimes, your like the voice of reason and common sense. :D just sitting there perched on my shoulder.

I have been studying the license manual so much, i think i am progressing in reverse on the stuff i already knew.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 30, 2017, 11:12 pm
while browsing the website of the Ham club i may or may not join, i came across this image that may be useful for those learning about electricity.

(http://www.wa1wa.net/index_htm_files/4554.jpg)

simple, kinda funny, yet informative.

so anyway, it has occurred to me, while browsing several frequencies, that my CB antenna is very inefficient at picking up anything, aside from my portable CB radio. so first on my list of things to add to my shopping list, is:
an antenna tuner (just in case, but i hope i don't need it)
a SWR/power meter
some RG-8x cable, and connectors (and a crimper, if needed)
some antenna insulators
something for antenna wire

the problem is antenna mounting locations are limited to the soffet of the house, and a tree on the back of the back yard. the house regularly slides snow in the winter, though being a hip roof, i can run a suspension rope from the corner of the house (far less snow slide). now the tree. it is an old pine that sags limbs in the winter, so i hope that it won't stretch and break my antenna. my solution to that is to use springs to tension the support rope, and it will allow room to stretch if the tree becomes unkind.

now, the antenna itself will likely be a dipole, as mentioned before. the following dimensions are where i will start: Overall = 16' 6.5", with each leg being just 8' 3.25". i am unsure if i want a flat-top, or an inverted V configuration. either way, i have to figure out how to get the feed cable back to the house, without it drooping down in the way.

As far as the CNC goes, the past few days have been too hot to work in the CNC camper. i still need to put a roof on it. i may even have my Ham station in there as well. maybe by then i will have installed an A/C. i will make it is separate, smaller room in the front of the camper. it will solve the feed cable location issue, as the antenna would pass right over the camper.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Jul 31, 2017, 09:28 pm
I sure was surprised going to work today. we were between jobs for customers, so i wasn't sure where we were headed today. we went to the lumber yard, bought some lumber, and some Advantech sheathing. imagine my absolute surprise when i found out it was for the new roof on my camper! :D :D :D

we got the rafters on for a low pitch gable roof, and the sheathing, and waterproofed it for the night. all in a days work. unpaid days work, but that's alright, my CNC camper is getting a new roof! :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 09, 2017, 11:32 am
I seem to have run into a Ham radio antenna dilemma. given the google overview of where i live, HERE (http://tjfserver.ddns.net/smf/index.php?action=gallery;sa=view;pic=33), every good place to put the antenna, like on the house roof, i don't think will support the swing of a ~9 foot (from center) antenna. course, i am not claiming anybody can tell from a google map pic. mostly just expressing frustration. i mean, where i personally do not own the house, it limits the possibilities.

Currently, as my radio is likely to go into the front of my CNC camper, i will likely have the antenna near there.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Aug 09, 2017, 01:54 pm
can you just attract the wings to a tree? i don't know anything about antennas but if you could use a tree as a post that makes things simple. Do you really need an 18ft wide Antenna? That honestly seems a bit gaudy... if it were me i'd start with the smallest antenna that would work, see how serious i was going to get about ham radios, then build a monster antenna only if i really needed it.
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Aug 09, 2017, 08:01 pm
For Ham radio, 18' is a small antenna. You should see big.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 09, 2017, 09:37 pm
can you just attract the wings to a tree? i don't know anything about antennas but if you could use a tree as a post that makes things simple. Do you really need an 18ft wide Antenna? That honestly seems a bit gaudy... if it were me i'd start with the smallest antenna that would work, see how serious i was going to get about ham radios, then build a monster antenna only if i really needed it.
a dipole antenna is a directional antenna, so it needs room to pivot.

though i have toyed with the idea of attaching 3 ropes to a center hub, and hanging the antenna from the hub. not sure how stable it would be in wind though...

my current line of thought is to use large metal conduit for the mast, and make a tip-up mast base, with hand crank winch. that way i could tip it down to work on the antenna. though i wonder what the side angle strength of metal conduit is. i was thinking 3" diameter should be strong enough.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Aug 10, 2017, 02:47 am
You have to move an 18 foot antenna around?! Yikes.


Something like this wouldn't work work?

http://www.ebay.com/itm/Tram-1410-Discone-Broad-Band-Scanner-RTL-SDR-ADS-B-Ham-Antenna-25-1300MHz-W5SWL/222132628682?epid=854084124&hash=item33b822ecca%3Ag%3AcwEAAOSwMHdXSbNb

I also saw a dipole antenna get that was 20m long. Seems like you could find use some trees approximately 20m apart and string it up in in between them.

Don't truckers have ham radios? What kind of antenna do they Use?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 10, 2017, 10:16 am
You have to move an 18 foot antenna around?! Yikes.


Something like this wouldn't work work?

http://www.ebay.com/itm/Tram-1410-Discone-Broad-Band-Scanner-RTL-SDR-ADS-B-Ham-Antenna-25-1300MHz-W5SWL/222132628682?epid=854084124&hash=item33b822ecca%3Ag%3AcwEAAOSwMHdXSbNb
"Tram 1410 Broad Band Discone
25 to 1300 MHz Receive - Perfect for scanner applications"
when i get my license, i plan to transmit as well. kind of the whole point of getting the license. ;)

Quote
I also saw a dipole antenna get that was 20m long. Seems like you could find use some trees approximately 20m apart and string it up in in between them.

Don't truckers have ham radios? What kind of antenna do they Use?
not sure about where you are, but truckers around here use CB radio (https://en.wikipedia.org/wiki/Citizens_band_radio). a free to use band within the 11m band, but is restricted to 4 watts of output.

if they use any Ham radio, licensed i hope, they are probably on higher frequencies, like 2m. that way they can use a smaller antenna.

(https://s-media-cache-ak0.pinimg.com/originals/ef/d7/70/efd770b4aca54c07d1911bdd8b56f2ae.jpg)

;) :o  :o ;)

~Travis

Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Aug 10, 2017, 01:34 pm
yeah, it is cb radio i was thinking of :-/
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 11, 2017, 10:56 am
Hmm, i only have half of my house electricity... let me check...  :o tree down on the wires, and hanging across the road! good thing my laptop has a battery, and my internet and WiFi are on my server's battery backup. i just shut my server down to preserve power there. a bit more excitement than i like at 5AM...

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 11, 2017, 12:16 pm
the power company just showed up, so now i have no power at all... good thing for batteries :D
now that it is lighter outside, i can see that a branch broke off a tree in front of the neighbor's driveway (why do we park on a driveway, and drive on a parkway?).

when i checked on my battery backup, it occurred to me that my WiFi is plugged into a small battery backup, so rather than run that battery down all the way, i plugged it into the big server UPS, so it is double backup. so i will have WiFi for quite a while on battery. :D no TV, so i may as well surf the web.

I made an interesting Ham radio discovery. ATV (Amateur TeleVision). looks like i can transmit (and receive) live video, that can be picked up with an antenna and an analog TV. not so much a show broadcast though. i can even get a R/C airplane and put a camera and transmitter (must not exceed 1W) onto it for payload. :D
I don't happen to have an R/C airplane, but i do have a race ready 2WD off-road R/C car kicking around that i haven't used in a while. :D may work for an inspection ROV, to run through a under-house crawl-space.

so anyway, now the power company is putting the service wire back up on the house, again. pulled the service weather-head off again. this time, i think it will be free of charge :D

according to the power guy, there was likely a micro-burst (results similar to a tornado, but doesn't have the rotation) that rolled through, as there was similar issues in other places around town.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 11, 2017, 08:03 pm
now that i am back from work, i find that the power is back on. :D my father and i even went over to our neighbor's and cut up the rest of the tree branch. one of many kind deeds for today i guess.

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Aug 11, 2017, 08:32 pm
Depends. Who got the firewood?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 11, 2017, 08:33 pm
Depends. Who got the firewood?
it is sitting off to the side of her driveway, out of the way.

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Aug 11, 2017, 08:35 pm
She did. Favor then.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 12, 2017, 10:51 pm
i added my router to my CNC, popped in a PCB router bit (a sharp pointy one, for less drag), and loaded up a test program, and after i setup my work-piece zero's wrong, i discovered the router is too heavy for my Z stepper, upon pressing the E-stop. as the router spun down, it was enough vibration to settle the un-powered Z-axis, driving the bit deep into the piece of plywood.
so i re-homed the machine, as the Z-axis was clearly out of sync now, and reset the zeros, correctly this time, and hit the go button, and watched very delightedly as the test G-code carved the plywood. :D :D :D
quite pleased with myself, and overly hot from the lack of an A/C, i came in, and realized i never took a video of the first real run.  :'( sorry, maybe next time.

so, i now have a semi-working machine (as long as i don't have to hit E-stop on a real work-piece). after i cool off, or tomorrow, i can grab the test piece i carved, and compare the dimensions to the CAD drawing, just to check how accurate it is. once i know it is accurate, i can order some copper-clad PCB, and carve out the circuits for my home sensors i designed. I also have to order some CNC router bits for general carving. probably just the ones i think i may need, and add to it as needed (in bulk).

i was surprised how easy it was to zero the Z-axis, using just a sheet of paper. in time, i may get a zero probe.

i will have to figure out how to help support the Z-axis too. maybe a spring to help take the weight off. when powered the stepper is rugged enough i can't push it down. but once the power drops, so does the router.

this is just so very exciting :D if only you folks were here to share in my delight ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: TKall on Aug 12, 2017, 10:55 pm
Congratulations on a successful first run!
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 12, 2017, 10:59 pm
thanks :D

one other thing about it. i know a router is loud, but inside that CNC camper...  :o  :o  :o

~Travis
Title: Re: what i have been up to, thus far.
Post by: TKall on Aug 12, 2017, 11:02 pm
The first thing I used my CNC for was to cut acrylic sheets that I used to mount MEGA's to DIN rail.  It worked quite well.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 12, 2017, 11:05 pm
i thought about using a piece of clear acrylic for my test run, but i figured wood would be easier on the bit, in case i needed to slow down the feed rate.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TKall on Aug 12, 2017, 11:18 pm
The acrylic has a tendency to gum up.  I'm still a total newbie.  LarryD is a good resource.
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Aug 13, 2017, 02:53 am
you could potentially add counterweights on the z axis. People do that with deltas for flying extruded mods. Alternatively, you could get some pulleys and use them to drive the z axis to gain some mechanical advantage. Springs seem like they might increase backlash, but if you don't do any/a lot of z-lifts then it doesn't matter to much, maybe.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 13, 2017, 02:59 pm
Hmm, counterweights, interesting idea. though with the amount of Z travel, i would need either long leverage, or a cable and pulley system. springs tend to wear out and break...
if anything, over-weighing the counter weights a touch may lift the router in a power failure. though i think i would prefer to have the router stay exactly where it was left, in after-thought.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 16, 2017, 12:39 pm
well, i have a 2-day vacation :D first multi-day vacation is many years. actually, at work we are between job sites, and as i have two days with several appointments, it was easier to just take a short vacation, one day paid. the other option was for my father to start a big job by himself. as he is getting up in the years, i understand his point of view.

the problem here is that as this is so infrequent, neither my father or i have any idea on what to do today and tomorrow. ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Aug 16, 2017, 01:28 pm
If anything is being harvested maybe get a bunch cheap? Peas maybe, they taste so good fresh.

Or get down the coast and buy lobsta off the pier?

There's someone in Franklin Co. with a laser tag arena but I dunno if it's up and going yet.

Some time look on youtube for warping concrete. It's glass fiber reinforced (GFRC), they pour out flat shapes, wait for it to set a bit then bend the crete like you would steamed wood.

Look a bit more into fiber-crete with wood shavings or paper pulp. If you like it, you might take it somewhere.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 16, 2017, 01:53 pm
Quote
If anything is being harvested maybe get a bunch cheap? Peas maybe, they taste so good fresh.
Hmm, they do taste good fresh. they even taste good raw (and fresh).

Quote
Or get down the coast and buy lobsta off the pier?
Personally, i don't much care for lobster. and it is a bit far away to drive, when i have a few appointments today. ;)

Quote
There's someone in Franklin Co. with a laser tag arena but I dunno if it's up and going yet.
i tried that once. seemed like i was mostly just an easy walking target. ;)

Quote
Some time look on youtube for warping concrete. It's glass fiber reinforced (GFRC), they pour out flat shapes, wait for it to set a bit then bend the crete like you would steamed wood.

Look a bit more into fiber-crete with wood shavings or paper pulp. If you like it, you might take it somewhere.
that is a bit more artistic than my brain is capable of ;)

having nothing to do was actually more of a joke statement. we will likely be cleaning out the shop, and job trailer to prep for the next job. i also have to work on the Hall-Effect home/limit switches for my CNC, as well as devise a way to help support the Z-axis.

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Aug 16, 2017, 03:07 pm
i also have to work on the Hall-Effect home/limit switches for my CNC, as well as devise a way to help support the Z-axis.

~Travis
If you set the linear Hall sensor and magnet up and then slide a piece of steel (can metal will do) in between, it should read less to nothing.

If you can read the magnet through a hole in one piece of steel and slide another in to shut it off then you have diminished the sense area. I have no real idea of how small a hole can work.

If you move the magnet across the direction that the Hall sensor points, the read values should peak when they are directly across from each other as long as the magnet is pointing at the Hall switch right then.

Make yourself a Hall sensor wand and have fun probing magnets and EM fields. If you combine a magnet and Hall sensor then you should be able to detect moving non-magnetic metals. You can use the wand to detect EMF in your own projects.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 16, 2017, 03:27 pm
Quote
If you set the linear Hall sensor and magnet up and then slide a piece of steel (can metal will do) in between, it should read less to nothing.
that is the design i was thinking of for the home/limit sensors. that way the signal will be normally active, so a dead sensor will have the same effect as a trigger. :D

Quote
If you can read the magnet through a hole in one piece of steel and slide another in to shut it off then you have diminished the sense area. I have no real idea of how small a hole can work.
interesting... could make the sensors much more accurate.

Quote
If you move the magnet across the direction that the Hall sensor points, the read values should peak when they are directly across from each other as long as the magnet is pointing at the Hall switch right then.
i like the first two, as they would be normally active. this was my initial design though, before i had done much research.

Quote
Make yourself a Hall sensor wand and have fun probing magnets and EM fields. If you combine a magnet and Hall sensor then you should be able to detect moving non-magnetic metals. You can use the wand to detect EMF in your own projects.
the Hall sensors are in the A314_ family (open collector output), so the wand would only tell me of the presence of EMF, not so much the strength. interesting idea though.

if i recall, and i am sure i am wrong, isn't that how a non-contact live circuit AC probe works?

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Aug 16, 2017, 07:13 pm
You need a Linear Hall Sensor, not a Hall Switch. The Hall Effect is used in many different devices, just because it says Hall doesn't mean it's the Hall you want. For your limit switch, maybe good but for probing EM fields and finding out what's going on you'll want the linear sensor and probably some kind of sensitivity control circuit.

You might want the linear Hall finding where the magnet field is strongest as that may provide your best zero.

A linear Hall sensor has a direction along which it measures field strength. You get strength and direction. If you make a wand that points in the direction and lets you get the sensor away from your hand then you can find the invisible shape of the field.

You can get more precise stops with light and use the Hall or cap sense to tell the motor to slow down, fwiw.

With 2 slits and a red led you can probably get an interference pattern. That will gives bands of light to sense and if the distance from slits to sensor is small, the distance between bands wil be smaller... you'd need to mask the sensor to see only narrow light or dark band alone.  And no, you don't have to have a laser to do the double-slit experiment, it's just more clear with one.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 20, 2017, 01:51 pm
Quote
You need a Linear Hall Sensor, not a Hall Switch. The Hall Effect is used in many different devices, just because it says Hall doesn't mean it's the Hall you want. For your limit switch, maybe good but for probing EM fields and finding out what's going on you'll want the linear sensor and probably some kind of sensitivity control circuit.
bought a few AH3503's to experiment with. :D they are discontinued by Allegro, but i got them real cheap from china (probably bootlegs, my luck).

Quote
You might want the linear Hall finding where the magnet field is strongest as that may provide your best zero.
hadn't thought of that... i was going to just slot the mount for the hall switch so i could adjust it for optimal zero. it would be very handy to know where the field is for my magnets.

Quote
A linear Hall sensor has a direction along which it measures field strength. You get strength and direction. If you make a wand that points in the direction and lets you get the sensor away from your hand then you can find the invisible shape of the field.
Hmm, interesting... (got my brain thinking).

Quote
You can get more precise stops with light and use the Hall or cap sense to tell the motor to slow down, fwiw.
I was steered away from optical (on CNCzone), as the router dust may obstruct the sensor, unless i build it into a sealed mechanical sensor that passes a vane through the sensor. seemed like hall would be easier to implement, of the non-mechanical sensors.

Quote
With 2 slits and a red led you can probably get an interference pattern. That will gives bands of light to sense and if the distance from slits to sensor is small, the distance between bands will be smaller... you'd need to mask the sensor to see only narrow light or dark band alone.  And no, you don't have to have a laser to do the double-slit experiment, it's just more clear with one.
a while back, i was reading "Hyperspace" - Michio Kaku (a bit of light reading ;) ), and he described light interference patterns. I never tried the experiment, but it looks neat. I may give it a try. :D

on the Ham Radio project, i received a spool of coax (RG8X), so once the UHF (PL259) connectors arrive, i can start antenna experimentation. course, after i ordered it, i found RG8U was better for long runs. DOH! oh well, i will make do with what i have.
I also ordered an inexpensive used SWR/Power meter, so i can make sure not to burn up my radio PA. eventually i will get an antenna analyzer, but not with my current budget.

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Aug 20, 2017, 06:42 pm
Quote
I was steered away from optical (on CNCzone), as the router dust may obstruct the sensor, unless i build it into a sealed mechanical sensor that passes a vane through the sensor. seemed like hall would be easier to implement, of the non-mechanical sensors.
So true about the dust and all.

With the linear Hall you can delineate mag field through or not holes or slots in sheet steel, or how moving metal affects an existing field (gear tooth counter) or whatever else might seem neat for whatever use it may have.

Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 29, 2017, 12:44 am
my linear Hall sensors should arrive tomorrow :D

Well, had to take my father to the ER today. he seemed to think his finger was a tiny bit too long, and so he nicked the tip off his finger with a table saw.  :o
i will spare you the gory details, but the doc finally stemmed the flow of blood enough to bandage it up (lot of blood in the tip of a finger...).

and that is after driving home after one job, we managed to run out of gas, in the middle of an intersection, with the heavy 16' job trailer towed on back. now let me tell you, that is a lot of weight to push out of the intersection :o

so i must say, today has been a bit more eventful than i prefer.

~Travis
Title: Re: what i have been up to, thus far.
Post by: larryd on Aug 29, 2017, 12:59 am
You will have to throw the saw away now!

Once they taste blood, they become to habituated to it.



.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 29, 2017, 01:02 am
ROFLMAO :D :D :D

i told my father, he got a kick out of it.

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Aug 29, 2017, 01:03 am
Did anyone else show up before you got clear of the intersection?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Aug 29, 2017, 01:07 am
Did anyone else show up before you got clear of the intersection?
fortunately, two other guys helped push the truck and trailer the rest of the way out of the intersection.
 my heart was pounding so hard, i thought i was going to pass out afterward.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 02, 2017, 10:31 am
I thought my soldering skills were at least passable, until i tried to solder a PL-259 connector on to RG-8X cable.  :o
first try: melted the foam core, shorted.
second try: works, no shorts.
third try: melted the foam core, shorted.

i tried my electronics soldering iron first, and got a lot of gobs of cold solder due to the thermal mass of the PL-259. then i tried a small butane torch. no more cold solder, but the heat is a bit too intense. the you-tube videos make it look so easy. and i tried desoldering the connectors for re-use, and only managed to completely melt the insulator.

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Sep 02, 2017, 01:16 pm
What wattage is your iron? Mine's got a dial.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 02, 2017, 01:21 pm
IIRC, it is around 60W (radio shack digital soldering station).

i haven't turned the heat way up yet as i don't want to burn out the tip again... i think i do have a tip with a little more mass. maybe that will help.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Paul_KD7HB on Sep 06, 2017, 05:32 am
I thought my soldering skills were at least passable, until i tried to solder a PL-259 connector on to RG-8X cable.  :o
first try: melted the foam core, shorted.
second try: works, no shorts.
third try: melted the foam core, shorted.

i tried my electronics soldering iron first, and got a lot of gobs of cold solder due to the thermal mass of the PL-259. then i tried a small butane torch. no more cold solder, but the heat is a bit too intense. the you-tube videos make it look so easy. and i tried desoldering the connectors for re-use, and only managed to completely melt the insulator.

~Travis
Bet you got the cheap nickle plated units.

Paul
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 06, 2017, 10:45 am
probably. i just bought some to get me started. more than likely my train of thought was, "look, one connector for $x, and here are a pack of 10 for far less than $x per connector". ;)
this is the cable i bought: TRAM RG8X (http://www.ebay.com/itm/500-feet-Coax-Cable-Low-Loss-RG8X-Bare-Copper-Braid-Center-Conductor-8XG/351869727267). was that a mistake too? i bought 500ft of it :o
it seems to work so far, though i realize being foam core that it is easily water contaminated. i have some coax seal in my wish list, though there is no current need for it as i don't have a permanent antenna yet.

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Sep 07, 2017, 02:35 pm
my linear Hall sensors should arrive tomorrow :D
Time to investigate magnetic fields?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 07, 2017, 10:46 pm
Time to investigate magnetic fields?
i have plans for this weekend to rig up a "probe" of sorts, to use with my oscilloscope, so i can see the effect. should prove to be interesting. :D

also, my Ham exam is this weekend too, so i expect a full weekend of things ToDo.

i found out just yesterday, when i looked at my car's license plate, that apparently my car registration ran out. so most of this weeks check will go to that  :smiley-cry: just one of life's lessons in financial planning.

oh, i just got some 50Ohm 250W non-inductive resistors. i plan on making a 500W dummy load for my radio. 4 resistors arranged in a series-parallel configuration. then mounted on a heat-sink, and placed in a metal can full of mineral oil for extra heat dissipation.

plus, i was curious, so i bought a... dare i speak it's name here? a Raspberry Pi 3  :o  :o  :o
I was looking at the industrial compute modules, but i couldn't justify the cost.
no real projects for the Pi yet. i just hadn't used one, and i was curious. i will have to look into loading WiringPi onto it.

I put my name in the hat to apply to be a moderator for the Bar. i doubt it will be granted, but who knows. it kind of started as a joke between AWOL and I, but when he suggested i apply, i thought why not? it isn't like i have anything invested in the application, and if i can help, why not?
I read the guidelines of being a moderator, and i think i tend to break some of them anyway, so i doubt anything will come of it.

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Sep 08, 2017, 03:19 am
You can read a Hall sensor on wires with analog in and blink led13 faster and brighter with higher read values.

This is for limit switches, right? The CNC part needing movement limiting is steel? Stick a magnet to it and start probing for fastest/brightest blinkies. Hold the sensor still and move the part with magnet under it. There will be a brightest zone.

Title: Re: what i have been up to, thus far.
Post by: allanhurst on Sep 08, 2017, 04:58 am
The old fashioned microswitch is accurate and extemely repeatable - I doubt if you'll be as accurate with a Hall device...

Allan

ps good luck with the Ham radio exam - here in the UK we're only allowed 150W max except with a special licence..
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 08, 2017, 12:11 pm
You can read a Hall sensor on wires with analog in and blink led13 faster and brighter with higher read values.

This is for limit switches, right? The CNC part needing movement limiting is steel? Stick a magnet to it and start probing for fastest/brightest blinkies. Hold the sensor still and move the part with magnet under it. There will be a brightest zone.


mostly for experimentation. on my CNC, i'm thinking of using the open-collector digital Halls for a E-stop loop. the homing sensors are currently open for experimentation, so i can test them for that.
the reason for the open-collector digital halls for limits is i want a non-mechanical limit, where i can use a pull-up resistor to hold the E-stop high, and any limit can pull it low. i also have a circuit designed for the opposite effect. IOW, if a sensor fails, then the loop is severed, and stops the machine.

the homes have to be very accurate, within the precision of the machine, simply for repeatability, so i am experimenting several options to see what is accurate, and stable over time.

The CNC is mostly aluminum, so the magnets will have to be attached with some sort of adhesive, like epoxy.

The old fashioned microswitch is accurate and extemely repeatable - I doubt if you'll be as accurate with a Hall device...

Allan

ps good luck with the Ham radio exam - here in the UK we're only allowed 150W max except with a special licence..
i understand microswitches are more repeatable, and i may use them as a fall-back if my Hall experiments prove not to be repeatable enough.

only 150W? a Tech license here allows you up to 1500W, depending on the band restrictions. though i don't think i will need that much power to start off with. mostly because as i live in-town, i don't want to expose my neighbors to too much RF exposure. when i can afford to move, i will likely find a place way out in the outskirts of town where i can safely radiate large amounts of RF.

with current parameters, the distance to compliance (minimum safe uncontrolled exposure distance from center of antenna) is about 19.9564 feet. if i move up to 1500W, it becomes 48.8104 feet. my proposed antenna mast, given what i have found available, and affordable, is about 20 feet tall. so uncontrolled exposure (an unknowing person wandering under the antenna mast during a transmit), is high enough i would need to fence off a perimeter around the mast, or get a much higher mast.
calculations are from HERE (http://hintlink.com/power_density.htm) BTW.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 09, 2017, 02:17 pm
i will be starting the long drive in a few minutes to take my Tech Ham license exam :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 09, 2017, 07:14 pm
PASSED! :D :D :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Sep 09, 2017, 07:48 pm
Hi,
CONGRATS MATE... :D :D :D :D :D


So trip home didn't feel that long....

Tom... :) :) :)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 09, 2017, 07:50 pm
it didn't seem as long, for some odd reason ;)

Now i just have to wait for my license, and i am golden :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: Paul_KD7HB on Sep 09, 2017, 08:50 pm
it didn't seem as long, for some odd reason ;)

Now i just have to wait for my license, and i am golden :D

~Travis
Congratulations! Well done! Now hope the government doesn't shut down before the FCC issues your ticket.

Paul, KD7HB, CN94jj
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 09, 2017, 09:13 pm
 :o  :o  :o  :o
Hadn't thought of that...

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Sep 09, 2017, 10:16 pm
The CNC is mostly aluminum, so the magnets will have to be attached with some sort of adhesive, like epoxy.
Well there you have luck, what you attach to the frame won't be affected by it.

You can be very accurate as to position with a linear Hall sensor. That's what I want you to see.

With a bar magnet you have field pointing out full strength each end that varies throughout the length of the magnet between N and S, with + and - readings depending on which way you point the sensor. If you adjust your circuit, you can read 0 to 1023 on an analog pin, your precision is the distance from N to S pole divided by your analog read max value. Errors in the length of your magnet are also divided by analog read max.

Stick a button supermagnet to a flathead steel nail and check readings from nail tip to head always along the nail axis pointing towards the head. That should match how the nail and magnet attached to the CNC frame would move under the sensor. You may need to tune the sensor circuit to reach 1023 at the head, perhaps with a turn pot.
With the linear sensor you can watch the limit approach. That's what I want you to see for yourself with a DIY Hall EM field probe.

A precision joystick runs 12 or more bits analog read, linear Hall sensors are commonly used since they don't wear out or need cleaning. These are instrument quality devices unlike Hall switches used in door and window intrusion systems.

Mess with the fields, make the thing that lets you read them! You already spent the nickel, get your time out of it!
That probe will let you find EMF sources better than an unterminated jumper.
Title: Re: what i have been up to, thus far.
Post by: allanhurst on Sep 09, 2017, 10:19 pm
EMF?  - I thought that was measured in volts, not tesla...

Allan
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 09, 2017, 11:16 pm
Quote
You can be very accurate as to position with a linear Hall sensor. That's what I want you to see.
ok, i will open my mind, and see what flows in ;)

I will create a test fixture tomorrow. right now, i am basking in the glow of my recent achievement. :D

will the 10-bit ADC be enough? i think i have a 12 or 16-bit I2C ADC in my parts rack, somewhere (never did get that bin rack sorted right ;) ).

i am thinking that to preserve the solid-state vs. mechanical, it would be better to use transistors to trigger the limits, rather than relays with their slightly longer activation time.

I am intrigued by the nail experiment, as it sounds like it will improve the repeatability by narrowing the field.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 10, 2017, 05:43 pm
First experiment with AH3503 Hall sensors.

parts list:
Arduino UNO X 1
AH3503 X1
ADS1115 breakout X1  (16-bit I2C from Adafruit - i just wanted more resolution ;) )
various connector wire  X7

Schematic PDF, should be attached.

using customized libraries from HERE (http://www.w5obm.us/Arduino/Arduino%20for%20Ham%20Radio%20Book/Customized%20Libraries/Customized%20Libraries.zip).

The code i used:
Code: [Select]

#include <Wire.h>
#include <ADS1115.h>
#include <I2Cdev.h>

ADS1115 adc;



void setup() {
  Serial.begin(9600);
 
  Wire.begin();
  adc.initialize(); // initialize ADS1115 16 bit A/D chip
 
  Wire.beginTransmission(0x48); // Begin direct ADC communication
  Wire.write(0x1);    //  Connect to adc and send two bytes - Set Config Reg to all Ones
  Wire.write(0x7F);  //  MSB
  Wire.write(0xFF);    //  LSB
  Wire.endTransmission();  // End the direct ADC Communication
 
  adc.setMode(ADS1115_MODE_CONTINUOUS); // Set the ADC to free running conversion mode
  adc.setGain(ADS1115_PGA_6P144);  // set the ADC gain to 6.144 Volt range, .0001875 Volts/step
  adc.setRate(ADS1115_RATE_475);  // set ADC sample rate to 475 samples per second
  adc.setMultiplexer(ADS1115_MUX_P0_NG);  // Set the ADC to AN0+ Vs ground Mode
}

void loop() {
  adc.setRate(ADS1115_RATE_475); // Set the ADC rate to 475 samples/sec
  adc.setGain(ADS1115_PGA_6P144); // Set the ADC gain to 6.144V
  adc.setMultiplexer(ADS1115_MUX_P0_NG);  // Set the ADC to Channel 0 AN0+ Vs ground
  delay(10); // adc settling delay
  Serial.println(adc.getDiff0());
}


output is directed to the serial port to make use of the Serial Plot function of the Arduino IDE.

Observations:
at 16-bit, the sensors are very sensitive to EMI. plot rises and falls when a north or south magnet pole is introduced, so it is connected correctly. following lunch, i will try a super magnet, and a nail.
I also noticed that interference is also detectable by having the UNO too close to the Hall sensor. seems to be quite sensitive. so my next test fixture will include a length of wire (shielded, 3con), with the Hall at the end.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 10, 2017, 08:55 pm
current code:
Code: [Select]
#include <Wire.h>
#include <ADS1115.h>
#include <I2Cdev.h>

ADS1115 adc;

unsigned long ADCaccum = 0UL;
int ADCcntr = 0;
unsigned long LastSample = 0UL;

void setup() {
  Serial.begin(9600);
 
  Wire.begin();
  adc.initialize(); // initialize ADS1115 16 bit A/D chip
 
  Wire.beginTransmission(0x48); // Begin direct ADC communication
  Wire.write(0x1);    //  Connect to adc and send two bytes - Set Config Reg to all Ones
  Wire.write(0x7F);  //  MSB
  Wire.write(0xFF);    //  LSB
  Wire.endTransmission();  // End the direct ADC Communication
 
  adc.setMode(ADS1115_MODE_CONTINUOUS); // Set the ADC to free running conversion mode
  adc.setGain(ADS1115_PGA_6P144);  // set the ADC gain to 6.144 Volt range, .0001875 Volts/step
  adc.setRate(ADS1115_RATE_475);  // set ADC sample rate to 475 samples per second
  adc.setMultiplexer(ADS1115_MUX_P0_NG);  // Set the ADC to AN0+ Vs ground Mode
}

void loop() {
  //if ((millis() - 1) >= LastSample) {
    //LastSample = millis();
    if (ADCcntr >= 5) {
      ADCcntr = 0;
      Serial.println(ADCaccum / 5);
      ADCaccum = 0UL;
    }
    else
    {
      ADCcntr++;
      ADCaccum += adc.getDiff0();
    }
  //}
  //Serial.println(adc.getDiff0());
}


ok, really i should continue this elsewhere, as it is off-topic for the Bar, though technically inline with the thread...

anyway, i added some light averaging to kind of smooth the signal a bit. kind of like a DSP filter, i guess.

now, if i didn't have a killer gut ache, i would be out testing this with my CNC to see what the accuracy is. in theory, if i move the CNC away from the sensor, and return it to the exact same position, the sensor result should be nearly spot on.

but as hardware experimenting is off the table for the moment, i can play with the software.

so, to keep things clean, i think i should add a little hysteresis, so when the CNC is homed, the signal doesn't flicker. this can be done by watching the idle signal, and setting my trip points slightly above and below each other, within the idle signal. should be easy enough.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 17, 2017, 07:12 pm
This is so very disappointing. everything i have worked hard for, has become outside my reach. i don't even know why i bothered to try...
no, i will not elaborate, i just need to vent.  :o

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 20, 2017, 12:27 am
Hmm, it would also seem that my application to be a moderator has gone ignored. perhaps because i am just a laughing stock to most. that was well worth the effort of typing out...
makes me wonder what is said about me in the places i can't read.

~Travis
Title: Re: what i have been up to, thus far.
Post by: allanhurst on Sep 20, 2017, 12:39 am
I'd think you must be a mug to want the job - who wants to wade through all our s*** to weed out the dross?

Not me - their diligence and toleration level must be way above mine!

( And actually I mean it)  thanks for all your efforts, moderators!

Allan

Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 20, 2017, 12:41 am
i thought it would give me something of value to do, rather than just spewing drivel.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Sep 20, 2017, 05:05 am
Travis, i write about you in my journal. I'll show you mines if you show me yours ;)

Are there actual moderator applications or did you just send a pm to one of the admin that never visit the forums?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 20, 2017, 11:06 am
Travis, i write about you in my journal. I'll show you mines if you show me yours ;)
i honestly don't know what to say to that...

Quote
Are there actual moderator applications or did you just send a pm to one of the admin that never visit the forums?
i posted it HERE (http://forum.arduino.cc/index.php?topic=54857.msg3403432#msg3403432).

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 21, 2017, 12:14 am
Quote
Travis, i write about you in my journal. I'll show you mines if you show me yours ;)
what exactly does this mean?

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 21, 2017, 10:52 pm
ok, there was a response, but it was gone before i could read it...

anyway,
I found a flaw with my Rpi. it is a PITA to use, as it needs a lot of extras to use, unless i have a pre-established program that runs headless. at least with my laptop and an arduino, i can setup most anywhere, and develop and debug, etc. aside from that, it seems to be powerful. it boots pretty quick.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Sep 22, 2017, 02:44 am
I deemed it a bar too low for arduinto forums.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 22, 2017, 10:18 am
...ok
I was just confused by the post as i didn't know exactly what your intentions were in posting it.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 24, 2017, 02:55 pm
anybody want to buy a 55-gallon drum full of my hopes and dreams?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 24, 2017, 09:46 pm
apparently not...

seems like i always set the bar too high for my dreams, only to watch them fly away without me.

I guess my current frustration is my Kenwood TH-28A 2M (Ham) radio. it stopped working, with no known reason. there is not RX, and no audio out (with squelch opened, or by pressing monitor), and no TX into a dummy load, through a meter. I have probed everything i can think of with my scope, and found no AF.

at least, that's the main frustration i feel like talking about.

I am not suicidal right now, but i do have an overwhelming feeling of being worthless.

~Travis
Title: Re: what i have been up to, thus far.
Post by: allanhurst on Sep 24, 2017, 10:06 pm
Over a b***dy broken bit of ekectronics??

Don't be daft.  It's not the end of the world.

Take it to bits and fix it. Or find someone who can.

Allan.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 24, 2017, 10:09 pm
Quote
at least, that's the main frustration i feel like talking about.
the broken bit of electronics is just the fuel, not the ignition.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Sep 25, 2017, 03:12 am
Hi,
Quote
I guess my current frustration is my Kenwood TH-28A 2M (Ham) radio. it stopped working, with no known reason.
Sorry I cannot help you, BUT!!!!

I have seen that you have tried to help yourself with advice from the HR Forum.
GOOD.
You have described your problem.
GOOD.
You have taken advice.
GOOD.
You have a service manual.
EXCELLENT
You are trying to identify problem areas.
GREAT.
You have said you will try a mic/speaker ,when it arrives.
GREAT.

1) DO NOT BEAT YOURSELF UP because this highly complex and small device has malfunctioned.
2) DO NOT BEAT YOURSELF UP because you are not having any major success. This will be caused by the fact that it is  a highly complex and small device.


Here I am talking to you, you who has assembled an got operating a CNC machine in his van in his backyard!!
Maaateeeeee.. (I could put an expletive in here!!!!!   :) )
I wouldn't even try that, and I'm an engineer.

Look at your accomplishments.

You can only use the smarts you have (and you have lots of them) to do so much.
You admit to your disabilities, I tend to think if you acknowledge them, they are no longer disabilities.

This is where you need an "Elmer" who can provide some local technical support.

I have a suggestion with your Kenwood.
Get a note book or A4 page.
Put a line down the middle.
On the left write the problems with the radio, on the right write (pun intrnded) the possible faults.

Then investigate each, crossing them off as you go.

Do not be disappointed if your attempts do not find a solution, you have not failed, as you have used ALL your abilities and that is the best anyone can do.

I agree with @allanhurst
It would then be time to find a Radio Tech to help.

Look at my side bar on this post, most of my bench work is repairs, repairs of equipment that have no schematics, (cos the manufacturer wants the customer to spend, spend, spend on new updated gear when the old fails).

The repair success rate can be as high as 80% with equipment that is in popular use, eg temp controllers etc.

But as low as 0% with a one off bit of gear that you do all the basic checks to and component updating, (ie electro caps) and when you turn it back on you have not advanced to step 2, and not solved the problem.

Or identified the fault, but its obsolete or a new replacement is cheaper than new part.

I have a time/cost parameter in there to stop me too, but I don't like leaving a bit of gear unfixed.

Life goes on mate...

Tom..... :)    (I need a coffee..)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 25, 2017, 09:29 am
Thank you, and you are right of course.
I get hyper-emotional with high levels of frustration, and sometimes i need a push.

i have emailed Kenwood amateur radio support to see if they have any guidance with the list of symptoms i provided.

i have been looking for a local Elmer, though without a huge level of success. the most local ham club i have gotten any contact with happens to be a very inconvenient distance away. but i haven't stopped looking.

I will get started on the fault list right after work (after a cup of coffee).

in my research, i have narrowed worst-case to a blown AF amp, and possibly a blown RF amp module. the first is surface mount, and beyond my solder/desolder skills, and the second i have already sourced a new one on eBay, and it looks easy to solder in.

again, thanks for the push in the positive direction. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 29, 2017, 12:24 pm
I have decided to finish my server rack cooling system controller project. this has been spurred by me poking around the server case to look at something, and i found a good charge of dust inside. as the cooling fan is drawn through a filter, it should solve this.

so far, i have altered the code a bit to take advantage of the WDT. sometimes the arduino seizes up, and i don't want that. the WDT will solve things temporarily while i pour through the code to find the issue. i suspect it has to do with my use of String (old habits die hard).

for fans, i have changed the plan from a salvaged blower fan, to a pair of 12" automotive radiator fans. I suspect i will have far more CFM, so the fans will not have to run full speed, and thus it will be quieter.

i also have to finalize the external circuit, and mill it onto a PCB (just ordered a bunch, so i can try out my CNC for that).

one quick question, how much wire length can I2C handle? my temp/humidity sensor is I2C, and the sensor needs to be mounted near the top of the rack, though the controller (to be built into a 2U bare server case) will not be right up to the top, as the fans need room to breath. i am suspecting the final design will be no more than 3 feet of run from the Arduino to the top of the rack.

I still have to mount some doors on the front and back of the rack. the front will likely have a glass window (i will check, but i think i can get it cheaper than lexan), just so i can see inside my rack, and bask in it's glory. ;)

i must say, i am glad that i have renewed my interest in some of my arduino projects. it has been quite some time since i have been in the mood to code.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Sep 29, 2017, 06:32 pm
Three foot should be OK for I2C but it's not really designed for anything off the board.


I'd just use the watchdog and not bother tracing down the issue, it's not like it's a critical device. If you are using i2c with that control it could be the i2c communication causing the lock up... I am using i2c between an esp8266 and arduino due and sometimes the due locks up, and I've done some reading and it seeems like i2c transactions can cause it as well...
Title: Re: what i have been up to, thus far.
Post by: allanhurst on Sep 30, 2017, 01:48 am
I2C is board-level stuff - not meant for any distance. I'd not trust it for much over 1 ft. But you might get away with it....

Fixed your ham stuff yet?

Allan
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 30, 2017, 12:19 pm
I2C is board-level stuff - not meant for any distance. I'd not trust it for much over 1 ft. But you might get away with it....

Fixed your ham stuff yet?

Allan
Hmm, i may have to redesign my rack cooler project a bit. I have some LM34 that i could use. they are analog, but i don't think the accuracy will be harmed much in a short distance. i have some shielded 3-wire kicking around i could use.

as for the ham stuff, the Kenwood TH28A still presents the same symptoms. I am unable to locate AF anywhere it should be. not even a bunch of static, or the system beeps. I have the TV going right now, so i am pretty sure my ears still work ;)
I am thinking it is time to cut my losses, and buy a radio that will accept most of the accessories i bought for the TH-28A. i am currently looking at the TH-K20A.
At least my TS-430S still works, so i still have HF. :D though i still await the FCC to approve my license application... lets just say, one's past can really make it hard to create a new me.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 30, 2017, 08:56 pm
it occurred to me, after buying my fancy logic analyzer, beyond using it to verify my CNC controller, i have not used it since. but then, i haven't really been working on a project that needed logic analysis...
i think most of my project laziness is likely due to my workshop being so cluttered and very unorganized. what i need to do is figure out what is junk, and what actually has some value. i was able to de-clutter my camper enough to fit a CNC into it. perhaps the same is needed in my workshop. just park the utility trailer by the basement door, and fill it up. actually, most of it can be bagged.

this is spurred mostly because i recall that when the winter snow starts to melt, the basement floor tends to gather about an inch or two of water. i would much rather know now that nothing is sitting on the floor that has value. I also need to pick up a large trash can for down there. half the clutter is trash that won't fit in my little trash bucket.  :o

I think another part of the problem is buying in bulk from China. if i only need 2 or 3 items, why do i buy 100 of them?

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Sep 30, 2017, 10:31 pm
Tell us more about your criminal history. That might be more interesting.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Sep 30, 2017, 10:38 pm
it is public record, so a little digging will find it. besides, my explanation is listed with my FCC application.

beyond that, i refrain, due to people being close minded about the fact it isn't who i am anymore, nor do i have any desire to be that person anymore.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 01, 2017, 02:54 am
A well, me, for my part, i used to be an og thug life straight gangsta busting caps on da streets, dog.
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 01, 2017, 03:03 am
http://www.insideprison.com/state-inmate-search.asp?lnam=Farmer&fnam=Travis&county=pope&st_abb=ar&id=815363

but that guy got 20 years in 2007....

plus he got charged with murder because of something to do with meth... doesn't seem like the learned type.
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Oct 01, 2017, 04:21 am
it is public record, so a little digging will find it. besides, my explanation is listed with my FCC application.

beyond that, i refrain, due to people being close minded about the fact it isn't who i am anymore, nor do i have any desire to be that person anymore.

~Travis
We still love ya mate....
My wife's family has a member who ends up in custody and jail, quite regularly cos he likes driving cars.
Its just that they are other people's cars.

Nice kid/guy, just no idea, all I'll say is Aspergers.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 01, 2017, 11:10 am
We still love ya mate....
My wife's family has a member who ends up in custody and jail, quite regularly cos he likes driving cars.
Its just that they are other people's cars.

Nice kid/guy, just no idea, all I'll say is Aspergers.
:D thanks for not running for the hills ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 01, 2017, 03:53 pm
come on travis, spill the beans!

Aspergers don't make you steal cars. Everyone's family has someone who is continually locked up! One of my uncles got DUIs so often he decided to leave town (to get away from the local cops) but died while making the trip from a head on collision because he was driving while (shocking) drunk. #deservedit
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 01, 2017, 04:03 pm
Travis, as an aside, somehow i went back the the first page of this topic.. the router was three phase, did the VFD work? Or did you go some other path? Since the topic started i have gotten a lot more familiar with them because i have purchased a mill that has a vfd built in.

Apparently VFDs are awesome as they allow you to control spindle speed very easily on a three phase motor.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 01, 2017, 04:20 pm
Travis, as an aside, somehow i went back the the first page of this topic.. the router was three phase, did the VFD work? Or did you go some other path? Since the topic started i have gotten a lot more familiar with them because i have purchased a mill that has a vfd built in.

Apparently VFDs are awesome as they allow you to control spindle speed very easily on a three phase motor.
currently i am using a 2.25HP Makita RF1101 router, as it was cheaper to make work, for now. I still have the 3-phase spindle, and when the router starts making money, then i may consider using the 3-phase spindle, and buying a VFD.

Quote
come on travis, spill the beans!
if you really must know, look me up in the FCC ULS applications.
just remember, that is NOT who i am anymore. i shy away from telling anybody, as most people can't handle the truth, and it pisses me off to no end when i meet close-minded people.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 01, 2017, 11:11 pm
man is my brain fried. spent several somewhat intense hours adding code to my server rack fan controller to integrate a Nextion display for status viewing, and a touch interface to handle configuration. I haven't tested the hardware yet, as my personal internal thermostat seems to be stuck on really fricken hot. perhaps the 3 cups of coffee are to blame. though i have heard that a lot of brain processing time can heat the body a bit too. not sure if there is any truth to that.

But anyway, the code and Nextion HMI file, are on my GitHub, if anybody is interested. i haven't updated the Eagle schematic yet to reflect the Nextion display, but it connects to the Serial1 of the Mega2560. when i get this project a little more finalized, i will have to solidify it a bit. I have had my eye on Robert's Mini 2560 since i have restarted this project. heck, if i could get one plus a "two display" programmer shipped for... actually, how much would shipping be for both? i have a little money burning a hole in my PayPal pocket. ;) (feel free to drop an email or PM)

(EDIT: i just sent an email :D )

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 02, 2017, 12:30 am
why do you plan to use a remote programmer for? I was also considering one of his mini megas.
 but now i try to use esp8266 and arduino dues....
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 02, 2017, 01:38 am
why do you plan to use a remote programmer for? I was also considering one of his mini megas.
 but now i try to use esp8266 and arduino dues....
to be honest, i had several projects in mind, quite a while ago, and added them to my desire list, for when i can afford it. then the projects failed, but it was still on my want list. now, my workshop is rather cluttered, and the few things i program via ICSP don't have a convenient place to set my laptop. but truth be told, they are very neat, and would come in handy, i am sure, for future projects. i also have a couple projects in the works using bare-bones 328, and it is just easier to use ICSP.

so in short, no immediate projects, but i don't keep a first-aid kit in my car because i plan to amputate my arm off. it is very cool, and i am sure i will find many uses for it. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 04, 2017, 12:44 pm
i don't recall how far back i mentioned the issue with my CNC Z-axis dropping when power is removed, but i thought i would update on that.

I have purchased a pneumatic double acting ram cylinder, that should be arriving in the mail today. my intention is to attach it to the Z-axis, and the associated mount. then by supplying low pressure air to the lift side of the ram, i can cause the Z-axis to be neutral weighted. if i can find the right regulator, it should be able to add air, and bleed off air as needed to maintain support. then if i have a storage tank before the regulator, with a check valve between the tank and shop air, if the power fails, stopping the compressor, or if the supply line gets cut, i will have a reserve of air to protect the router bit, and the work piece.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 05, 2017, 03:44 am
what was the original solution the cnc used? Was the original plan to just let it crash into the bed? Maybe considered adding a APC and a micro control... if the power is off write a program to home and stow the router.

I need to get an apc for my 3d printer, especially since it is a large format printer. It's kind of annoying when the power shuts off and you loose a 10 hour print. Doesn't happen very often...  but when it does...
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 05, 2017, 11:29 am
I have no idea what the original solution was. it didn't come with the CNC. and the CNC had the settling problem even with the 3-phase spindle that came with it.
the pneumatic "spring" is actually used a lot, from my research. though i got a tip from CNCzone to just use an air tank between the regulator and spring to buffer the air pressure changes from the air spring. that way i can use just a regular low pressure regulator. it all works together to give me a variable strength spring. with a little math, i figure the air cylinder will supply about 3.9 pounds of support per PSI, if i did my math correctly (32mm bore cylinder). given that the cylinder is rated for about 145 PSI max, i can exert up to nearly 600 pounds of force. kinda scary actually  :o
I bought the cylinder for the stroke length, and had not calculated force at the time. but with a low pressure regulator, i can set the force pretty low.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 05, 2017, 11:41 pm
for all those stuck in an office, and/or cubical, i thought i would post a (crappy resolution) picture from my cell phone of my "cubical walls" ;) perhaps i will bring my much better camera sometime while i am there. just in case people wonder what i do for a living.
Right now, my father and I are helping another contractor put an addition onto a camp.

(http://forum.arduino.cc/index.php?action=dlattach;topic=475538.0;attach=228662)

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 06, 2017, 12:54 am
What kind of camp?
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Oct 06, 2017, 01:17 am
"Don't mention the war Basil!!!!"
Title: Re: what i have been up to, thus far.
Post by: Henry_Best on Oct 06, 2017, 04:04 am
for all those stuck in an office, and/or cubical, i thought i would post a (crappy resolution) picture from my cell phone of my "cubical walls" ;) 
Your cubicle is very damp. Looks like you need a dehumidifier....and a roof.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 06, 2017, 09:46 am
What kind of camp?
single family, privately owned camp. two story, with a finished off walk-out basement.

"Don't mention the war Basil!!!!"
:smiley-confuse: not familiar with the reference...

Your cubicle is very damp. Looks like you need a dehumidifier....and a roof.
some days, my cubicle is quite damp. depends on the task at hand, and if my cubicle happens to be outside, and of course, it depends on what the weather is. it can be cold in the winter, hot in the summer, wet in the snow and rain. but on days like yesterday, the temperature was comfortable, light cool breeze, and the sound of loons out on the water. it makes it enjoyable to be at work.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Oct 06, 2017, 11:23 am
Quote from: TomGeorge on Today at 10:17:12 (http://"http://\"https://forum.arduino.cc/index.php?msg=3437667"")


Quote
"Don't mention the war Basil!!!!"

Quote
not familiar with the reference...
Fawlty Towers, BBC TV, John Cleese.
Title: Re: what i have been up to, thus far.
Post by: MAS3 on Oct 07, 2017, 12:55 am
:smiley-confuse: not familiar with the reference...
You need to correct that ASAP.
Use Google.
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 07, 2017, 01:28 am
Well, i was able to google but still have no idea how it pertains to this topic ;D
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Oct 07, 2017, 01:59 am
Hi,
Must be my warped old mind.

What kind of camp?
Prisoner of war camp.
WW2
German guests episode of Fawlty Towers.
Don't mention the war!!!

(I'm sure if I worked at it I could get Kevin Bacon in there too.)

Edit.   John Cleese   ==  Big Picture == Kevin Bacon
I could probably shorten all of the above to total of 6 steps.

Tom... :)
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 07, 2017, 03:54 am
Ooooooh, right. Shhhh
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 07, 2017, 02:10 pm
That is way too much thinking for just one cup of coffee this morning ;)
I will google it later, as i feel like i am the butt of an inside joke, for some reason...

as for my server rack fan controller, i have tried a few temp sensors, even an analog LM34. for some reason they all report incorrect temp values. so i thought i would try some DS18B20 sensors. I have one coming from SparkFun to evaluate. I don't recall having so much trouble just sensing temperature before. i am beginning to think either the MEGA2560 has a fault, or there is something in my code. I will have to go line by line, and see if i can spot the error. perhaps it is as simple as a variable type conversion error, skewing the results. either way, i think the copy of the code on my GitHub already has the changes i made to support the DS18B20.

But i still have to finish enclosing the rack anyway. I bought a pair of 12" automotive radiator fans that i will mount in the back panel of the rack to draw hot air out. I can temporarily wire them to be full on, until i get the controller working correctly. it is my hope that with two fans running at the same time, i can slow them down to quieter speeds, and still have enough air exchange.

My thinking with the DS18B20 sensors, is that i can eventually place one inside each piece of heat generation equipment (servers and my big APC UPS), and be able to regulate speed of the fans, based on the thermal demands of the equipment. my previous plan was to just sense the air temp in the back of the rack, and fire up the fans to remove the heat. but in thinking, some equipment needs extra air flow. my APC UPS for example, only runs the internal fan when it is on battery power. right now, according to the little block on my forum home page, my UPS has an internal temp of 94.28F. seems a bit warm to me...

that reminds me, i need blank rack panels to close in the unused U spaces...

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 07, 2017, 02:27 pm
I do not think 94f is that hot inside the ups.... if it were in the ambient air I might be more concerned.

Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Oct 07, 2017, 02:36 pm
94F = 34C...  its just simmering, would even burn.
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 07, 2017, 02:39 pm
http://www.apc.com/salestools/VYOG-789HBV/VYOG-789HBV_R1_EN.pdf

Seems to indicate APC can tolerate 40c ambient air temperature...
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 07, 2017, 02:57 pm
Hmm, seemed hot to me, but anyway, the main reason for enclosing the rack is to keep ash dust from the wood furnace out of everything. my thinking, ash dust is basically carbon, carbon can conduct electricity (more of a resistor i guess), and that would be bad inside a circuit, let alone a server.

~Travis
Title: Re: what i have been up to, thus far.
Post by: allanhurst on Oct 07, 2017, 08:04 pm
Surely there is very little carbon in the ash of a wood furnace - it'll all ( nearly ) be burnt.

There will be the dried remants of various oxidised products of the tree's metabolism - which depends on the
tree and the environment in which it grew. Various salts will be present.

Probably quite a good insulator when dry - but also hygroscopic ie will atract moisture, upon which it will become partially conductive and also corrosive.

So a good idea to keep it away from electronics.....

Allan.   
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 07, 2017, 10:29 pm
there, see, i knew wood ashes were bad for electronics, i just couldn't remember the exact reason ;)

i found that it would seem i have some dead ADC pins on the server rack cooler arduino (MEGA2560, looking forward to using my Mini 2560 :D ). that's why my analog LM34 sensors reported wrong. though i still want to use digital sensors, so i also await my DS18B20 from sparkfun. the current LM34 is just to supply "place holder" data.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 09, 2017, 12:09 pm
My father and I have acquired a free, and quite old wood lathe that we plan on fixing up and using. it is quite a nice one, beyond what we expected. cast iron bed, morse taper head and tail, so we can still get accessories for it.
I tried my hand a few days ago on my fathers old, but lesser quality lathe, and i was actually fairly good, by my observation ;)
We also got a smaller one, though it is just short of a basket-case. i may fix it up to make a small CNC lathe, so i can make repeatable turnings.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 09, 2017, 10:46 pm
A cnc wood lathe?


I need to get a metal lathe and dry cut metal saw and my shop will be all set
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 09, 2017, 10:50 pm
why not a cnc wood lathe? if it was needed to turn out a bunch of one thing, with some level of repeatability, then CNC would be the way to go. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: allanhurst on Oct 09, 2017, 10:52 pm
quote : A cnc wood lathe?

Look at modern professional wood processing machines - CNC big time!

How else do you think they make the complex mouldings and joints for millions of
window frames , stair ballisters etc ?

Allan
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 09, 2017, 11:17 pm
how many posts are you planning on turning?
Title: Re: what i have been up to, thus far.
Post by: allanhurst on Oct 09, 2017, 11:22 pm
Some are - have a look.

My brother did a 7-year apprentiship in machine wood working, and showed me some of the kit - impressive.

Allan
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 09, 2017, 11:24 pm
@Allen

Yeah, but for some reason I doubt Travis will be doing any of the things you mention in large quantity.


Is there software available for hobby lathes?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 09, 2017, 11:29 pm
@Allen

Yeah, but for some reason I doubt Travis will be doing any of the things you mention in large quantity.


Is there software available for hobby lathes?
I have a project idea, that is a joint project with an entrepreneur customer, to make a specialized turning.

and yes, there is software, on the controller end. LinuxCNC will control a lathe. as for the CAD/CAM software, i haven't dug that far into it, yet.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 10, 2017, 02:17 am
There is software, but it costs 1000s of $$ or it won't let you put out more than 30 lines of GCODE, from a quick googling. On a CNC lathe i imagine you only have to control x and y and then figure out a way to control the RPM... with a vfd maybe that isn't that difficult however.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 10, 2017, 10:36 pm
Hmm, perhaps i won't convert it to CNC... I will just have to hone my manual skills ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 22, 2017, 01:18 pm
while looking on zillow dot com, just now, it occurred to me that i need a roommate to help share costs. any takers? ;)

so anyway, thought i would update a bit on my CNC progress. I have temporarily abandoned my Hall effect sensor limits as they were taking too long to develop right. so i bought some Moujen ME-8108 mechanical limits, thinking it would save me time. upon examining them to locate the best mounting position, i will have to design and make some sort of fixtures for them. they came with roller arms, and they are not ideally located for my machine. but if i can develop a fixture that i can attach, then i think they will work well. they take a lot of throw to activate and deactivate. roughly 1/2 to 3/4 of an inch (or more if i extend the roller arm).
I got a set of 10, as it worked out cheaper per switch. I will use 3 per axis. 2 for E-stop loops at each end of the axis, and one a bit before the limit for the home. i have tried combining limits and homes in the software, but it shuts down the machine when trying to home. the LinuxCNC software does have soft limits, but before homing, the soft limits don't work, until i home the machine. better to be safe than sorry.
I do like the Moujen limits though. they seem to have sturdy construction, and have a gasket to keep crap out of them. far better then the open contacts that are OEM to the machine. I have had a couple of homing crashes due to the OEM switches.

I have also finally ordered some CNC router bits for wood. they are all one size (1/8"), but they will get me started, with the small projects anyway. it is a multi pack, so if i break one (solid carbide), i have replacements. as i develop my design and machine setup skills, i can buy more bits when i know what i need.

in regard to my server rack, i have made the doors, but i am waiting on the mounting and latching hardware for them. I still have to mount the fans in the rear door for ventilation.
As for the fan controller, it is still in prototype mode. the delay has to do with changing the network interface from wired ethernet, to WiFi, using an adafruit WiFi breakout module (https://www.adafruit.com/product/3060). I got the external antenna version to get the WiFi outside of the metal enclosure that the fan controller will be housed in. i will also be changing the SD card for config files over to EEPROM storage. it will help streamline the hardware. it will also remove a large portion of the use of the String object, in favor of byte variables. so in short, my prototype isn't quite ready to start moving over to my new Mini2560.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 24, 2017, 09:39 pm
well, i gave in to peer-pressure from some co-workers my father and i are working with, and bought a cheap drone. it is a Holy Stone F181C. I figure it may last long enough for my to figure out how to fly one, and eventually build that is better. it has a camera, but it isn't FPV, though that may have been handier. good enough for a first one, i think.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Oct 24, 2017, 10:04 pm
well, i gave in to peer-pressure from some co-workers my father and i are working with, and bought a cheap drone. it is a Holy Stone F181C. I figure it may last long enough for my to figure out how to fly one, and eventually build that is better. it has a camera, but it isn't FPV, though that may have been handier. good enough for a first one, i think.

~Travis
Does you Homeland Security know about the Holy Stone ? ? ?
The safety instructions don't suggest you wear a ski-mask for protection? ? ? ?

Tom.. :)
What mass of C4 is it rated at?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 24, 2017, 10:32 pm
Does you Homeland Security know about the Holy Stone ? ? ?
The safety instructions don't suggest you wear a ski-mask for protection? ? ? ?

Tom.. :)
What mass of C4 is it rated at?
...I seem to be utterly confused here...

~Travis
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Oct 26, 2017, 03:28 am
Joke, Trav. Hyper-magnification of what paranoid threat potential HS will take of you and your drone.

See about getting a B/W Camera with FM transmitter to fly by. Would using drones to flush and herd deer be illegal, if you got caught?

Bigger question, if you used drones to kill coyotes would anyone get bothered? Mount an AR-15, IR cam and IR leds. Just be real sure of your target and what's behind it. We can write more when prison lets you unless we get adjoining cells. Yes, joke.
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Oct 26, 2017, 11:51 am
Joke, Trav. Hyper-magnification of what paranoid threat potential HS will take of you and your drone.
Oh I like that, can I borrow it?
Tom.. :o :o :o
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 26, 2017, 08:49 pm
drone arrived today. eBay seller claimed "Shows no signs of use", but it was very clear upon looking at the drone that not only was one of the motors burnt up, but the plastic around it was melted substantially.
I have contacted the seller, but we will see...

if it wasn't for bad luck, i would have no luck at all.  :o

~Travis
Title: Re: what i have been up to, thus far.
Post by: Isaac96 on Oct 27, 2017, 02:25 am
[sarcasm] 
I have an idea. Send the quad back after taking a soldering iron to the chips (after they ask for return ofc)
[/sarcasm]
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 27, 2017, 03:13 am
What of drone was it? I have a phantom 4 and i had one of the original phantoms. I havnt crashed the phantom 4, and i doubt it would survive impacts as well just due to all the technology.... but my phantom 1 ran out of batteries and landed in a river and sunk to the bottom. The battery wasn't any good but other than that the drone still worked fine.

I've crashed it again since then and one of the motors has a pretty big dent in it, so i have been meaning to turn it into a foldable tricopter, though there are only so many hours in a day :)
Title: Re: what i have been up to, thus far.
Post by: GoForSmoke on Oct 27, 2017, 03:48 am
drone arrived today. eBay seller claimed "Shows no signs of use", but it was very clear upon looking at the drone that not only was one of the motors burnt up, but the plastic around it was melted substantially.
I have contacted the seller, but we will see...

if it wasn't for bad luck, i would have no luck at all.  :o

~Travis
And that was money you didn't have for indoor lighting. Now you really don't!

Can you get ahold of a lot of wood chips? Big piles left out "cook" from bacteria inside, get low-cook hot inside, steam outside...
So if you put a tarp on one side of the house high enough to pile 4+ feet high of chips along as many feet as you got chips then if that pile starts "cooking" and keeps going you could have a warm wall inside and warmer basement. I've seen wood chip hills where developments went into places, they steamed.

A better thing would be to build a methane digester and use the gas to cook and heat inside. All the wood and food scrap you get can feed the heater but it would take a big digester. Look on Youtube for ups and downs.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 27, 2017, 10:40 am
What of drone was it? I have a phantom 4 and i had one of the original phantoms. I havnt crashed the phantom 4, and i doubt it would survive impacts as well just due to all the technology.... but my phantom 1 ran out of batteries and landed in a river and sunk to the bottom. The battery wasn't any good but other than that the drone still worked fine.

I've crashed it again since then and one of the motors has a pretty big dent in it, so i have been meaning to turn it into a foldable tricopter, though there are only so many hours in a day :)
Holy Stone F181C
i never crashed it. i never even got to fly it. when i fired it up, one motor wasn't spinning, so i shut it down, checked, and found the motor was burnt. it was still cold, so i didn't burn it up.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 29, 2017, 02:30 pm
And that was money you didn't have for indoor lighting. Now you really don't!

Can you get ahold of a lot of wood chips? Big piles left out "cook" from bacteria inside, get low-cook hot inside, steam outside...
So if you put a tarp on one side of the house high enough to pile 4+ feet high of chips along as many feet as you got chips then if that pile starts "cooking" and keeps going you could have a warm wall inside and warmer basement. I've seen wood chip hills where developments went into places, they steamed.

A better thing would be to build a methane digester and use the gas to cook and heat inside. All the wood and food scrap you get can feed the heater but it would take a big digester. Look on Youtube for ups and downs.
a client of my fathers company built a huge digester, though it was used for dog-park poo. he runs a soil lab. i guess it worked, to some extent. he keeps trying to get somebody to take it off his hands, but it is huge, and i have no idea how to make it work anyway.

I ended up sending the drone back to the sender, though i am not sure if i will get a refund for it or not. eBay won't let me add USPS tracking information, so eBay won't know when the return arrives, and won't refund the money. though the return is no longer in my hands. so that is apparently lost money...  >:(

I haven't changed my rack monitor over to the RWP Mini2560 yet. I just finished a large bit of debugging as i changed from an ethernet connection to a WiFi connection, using Adafruit's ATWINC1500 WiFi breakout. it has been running for a bit now, this morning, and i have polled it several times by browser, and it seems to be stable. I don't have the DS18B20 sensors attached yet, on this prototype (already debugged that portion of code, and it works), but i still have the 4.7K pullup so the OneWire bus doesn't complain.

so now i just have to move from prototype to hardwired, and then figure out how to mount it all in my enclosure i have for it (cheap/flimsy 2U rack server case), and also the small ATX power supply to power it and the cooling fans. the process won't be super easy, as i want it to not be a mess of spaghetti wiring. i am also waiting on some of the construction, as i need the Dupont connector crimp tool for some of the connections. i even bought some card edge/corner mounting posts from DigiKey, as there seems to be a lack of screw mount holes in the RWP Mini2560 ;). no big deal though, now that i have the mounts.

as for temp sensor placement, i currently have one sensor for the front of the rack (incoming air), and one for the back of the rack (exhaust from server/s). it will take some experimenting to figure out where the back sensor needs to go, in order to take good temp measurements. I have a feeling the fans will constantly ramp up and down, as they will move air faster than the temp sensor can absorb the temp from the air. my upgrade design will be to have a temp sensor inside the case of whatever makes heat, and averaging the value. may or may not work. i will try it with just the one back sensor for now, to see what happens.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 29, 2017, 04:32 pm
Ebay is usually extremely buyer friendly. Too the point of absurdity..... You shouldn't have had to pay the return shipping.

What's wrong with an esp8266?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 29, 2017, 05:01 pm
Ebay is usually extremely buyer friendly. Too the point of absurdity..... You shouldn't have had to pay the return shipping.
i didn't have to pay for the return, as i used the eBay return label. but it didn't update right off that it was shipped, so i assumed i had to enter the tracking number, but then it would say it was already on file, though it didn't update to reflect it. all is good now, though. it finally updated.

Quote
What's wrong with an esp8266?
every time i try to program one, i look at the various tutorials, and they are conflicting enough to boggle the mind, so i revert back to the Arduino modules. one of these days i will figure them out. besides, then i would have to rewrite the code, all over again. ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 30, 2017, 09:04 am
as the wind outside was keeping me up, so rudely, i was browsing around the digital music section of Amazon. i have a very wide range of music that i like (Linkin Park, Metallica, Skrillex, Beethoven, Bach), and i was checking out the latest album by P!nk (not a typo), and i must say, i haven't found a song i don't like yet. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 30, 2017, 12:39 pm
power failure, due to the wind...
at least my internet is on battery backup. :D i shut down my server to make it last a little longer.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 30, 2017, 06:07 pm
still no line power. I had to fire up my generator to recharge stuff, and cool the fridge back down.
News says it may be a while, like days :o  :o  :o i really hope they are bluffing!

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 30, 2017, 06:33 pm
having just posted that it may be a few days... Power has returned! figures, i just got the generator hooked up.
So, power is back, all is well... oh yeah, i gotta turn my server back on...

~Travis
Title: Re: what i have been up to, thus far.
Post by: Isaac96 on Oct 31, 2017, 04:56 am
how does the internet work without power?
UPS and a hard cable? or satellite?

Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Oct 31, 2017, 05:33 am
my internet usually works when there is no power. It is rare that a power pole collapses (and takes out the cable tv/internet... usually a transformer shits out. As long as you got a generator you got internet, 95% of the time anyway...
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 31, 2017, 09:21 am
how does the internet work without power?
UPS and a hard cable? or satellite?


(WiFi + DSL Modem) + rackmount UPS. the UPS is a APC SU1400RMXL3U, so the internet stays up for a while, if i shut down the server. at some point, i plan on adding more batteries to the UPS for longer run-time, with the server running.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Oct 31, 2017, 12:45 pm
Hi,
I have the Aussie  "NBN", fibre to the house, with phone.

They didn't tell us that the odd, irritating beep,  that sounds like a smoke detector battery going flat, was also the sign of the backup battery in the NBN box, on the skirting board behind the TV, was going flat, its needed basically to keep phone alive during black out.

The trouble was when they installed the inside NBN box, next to the WiFi box, they installed them to close together, and  you couldn't get the battery door open to change the battery.

Tom.... :)
PS I moved the WiFi.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Oct 31, 2017, 09:06 pm
Drooool, fiber internet  :o :D

fortunately, my UPS doesn't beep until the battery gets critical.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Henry_Best on Nov 02, 2017, 10:22 pm
Drooool, fiber internet  :o :D
I've got fibre internet. It connects at 100 Mbs. (sometimes it gets up to 105 Mbs.)
There's a free upgraded modem on its way to me (scheduled to be here on Tuesday) that will give me 150 Mbs.
Sounds like everything should download in seconds, but some things take ages. I suspect that they are only pushing it on to the net at 56 Kbs, at the other end.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 02, 2017, 11:02 pm
I average about 150KBps, download. not sure what my upload speed is (applies more to people using my hobby server). just a low grade DSL here, as it is what we can afford.
I asked a friend (work related) of mine, who runs a lab, if i could move my server rack into his office and make use of his fiber connection. i never really got an answer, so it is a good thing i was just joking around. ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 03, 2017, 02:34 am
how much less is dsl than cable? 150kb/s is nasty. your upload speed usually about half the upload speed. Be happy you dont get too much traffic.
Title: Re: what i have been up to, thus far.
Post by: TKall on Nov 03, 2017, 02:41 am
150 k?!   I think smoke signals are faster than that!
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 03, 2017, 02:50 am
(https://s1.postimg.org/74bku6kprz/IMG_0801.png)

This is over wifi on my ipad, while i am steaming hdtv off of netflix on my tv....
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Nov 03, 2017, 04:10 am
Hi,
My typical midday speed, not bad for a 10Mbps plan.
(https://forum.arduino.cc/index.php?action=dlattach;topic=475538.0;attach=232059)

Fibre to the house.

Tom... :)
Title: Re: what i have been up to, thus far.
Post by: Isaac96 on Nov 03, 2017, 04:14 am
I get 100mb download, about 5 upload. 
LAN direct to router.
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 03, 2017, 04:57 am
(https://s1.postimg.org/15otz85wbz/IMG_0802.png)

no longer streaming but still wifi...
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 03, 2017, 09:14 am
just tried a speed test, without anybody else here on the internet, via Google (http://speedtest.googlefiber.net/), and got this.

(http://forum.arduino.cc/index.php?action=dlattach;topic=475538.0;attach=232068)

rather surprising actually  :o  :o  :o

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 03, 2017, 04:12 pm
Download speed much lower than the upload speed usually indicates a problem with your modem or router; that is highly unusual. Though 74mbs up is also very high for most residential service so maybe the test was bad?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 03, 2017, 04:22 pm
tried a different test (speedtest.net (http://speedtest.net)), and got this.

(http://forum.arduino.cc/index.php?action=dlattach;topic=475538.0;attach=232096)

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Nov 03, 2017, 07:01 pm
Hi,
I tried the google test that Travis did and compared it with Ookla

Google    Download   11.2Mbps    Ookla Download  11.14Mbps

Google    Upload     0.79Mbps      Ookla   Upload      0.98Mbps

The Google calls itself  "Google Fibre"

So both in the same ball park, at 4:57am    4/11/2017   AEDST

Tom... :)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 03, 2017, 07:17 pm
of the tests i did, the second one (speedtest.net) looks like it is more realistic results.

i have a cousin that works in telecom, out in Washington state. a while back, when he got fiber for his house, i was again drooling over his transfer rate, and he mentioned that most residential DSL has lower uploads, than downloads. i would need a commercial account to raise my uploads up much higher.

I was offered a duel DSL modem by a work friend, but it would double my internet costs, plus the second phone line. i guess it would "bond" the two DSL connections together, using one for TX and the other for RX, for full-duplex DSL.

in any case, it is probably a good thing my personal server is so under-utilized.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 04, 2017, 04:42 pm
i remember as a kid, i made pop-corn, not with oil (liquid), but shortening (http://www.crisco.com/products/vegetable-shortening/baking-sticks-all-vegetable-shortening) (semi-solid). the flavor was so good it only needed some salt.

Up till just now, i have been using liquid oil in my oil popper. but i tried shortening, just to see if it was as good as i remembered, and boy was it! :D

I thought of an interesting idea for my wildly under-used Raspberry Pi 3. i could set it up for digital signage (Screenly OSE), and set it to display a non-public portion of my website that i can setup as a family appointments calendar. people here at home can use my website to enter appointments, and the digital signage Rpi with a small HDTV could be located in a central location, so for instance, if somebody was far later than usual getting home, one look could confirm or deny an appointment.
That's just one thought i had though. I have also thought of using it as a large central display, showing data from various Arduinos logging telemetry. for instance, a weather monitoring system. i could even combine the two, and provide a calendar, with the weather telemetry. whatever i end up with, i will make it open-source, so others can use it, and make it better (or worse ;) ).

~Travis
Title: Re: what i have been up to, thus far.
Post by: TKall on Nov 04, 2017, 06:30 pm
Coconut oil is good too.
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 04, 2017, 07:38 pm
Mmmmm fat
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 04, 2017, 10:53 pm
Trying a different drone. i bought a new MJX Bugs 6

Code: [Select]
Features:
250mm wheelbase strong structure.
Brushless motors are powerful, durable and efficiency.
7.4V 1300 mAh 25C LiPo battery supports 12 minutes flight.
LED light enables you to fly in the dark at night.
2.4GHz technology adopted for anti-interference.
High/low speed switch, suitable for indoor and outdoor.
3D-flip function makes your flight exciting and fun.

Specifications:
Brand name: MJX
Item name: Bugs 6
Controller: 2.4GHz mode 2
Channels: 4 Channels
Gyroscope: 6-Axis
Motor type: Brushless
Function: Forward/backward, up/down, left/right, sideward flight, hovering, 3D-flip
Control distance: About 300m
Battery for quadcopter: 7.4V 1300mAh 25C li-po battery
Battery weight: 90g
Battery dimension: 85 * 40 * 20mm
Charging time: About 90 minutes
Working time: About 12 minutes
Battery for remote controller: 4 * AA battery (not included)
Item dimension: 205 * 205 * 90mm
Item weight: 354g (including battery)


unfortunately, after buying it, i realized it is coming from China. but it seems like it is better than the other one (not factoring the burnt motor on the last one). it doesn't come with a camera, but it is upgrade-able to support one, and the range is better. spare parts are available.

so after the slow-boat pulls into port, i will see if it really is better.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 05, 2017, 04:03 pm
I haven't played in a while, but i just finished a session of Halo: Reach on my Xbox 360. i guess i had forgotten the level of visual over-stimulation. i seem to have a headache now.
I don't play it online, just one player "firefight", but if i did, i imagine the visual stimulation would be far beyond what my brain is used to.

In other news, my energy and motivation levels are dropping like the leaves off the trees. happens every winter. i checked with my doctor about sun-lamp therapy, and he pretty much discounted it as a good way to get skin cancer. so now i am not sure where i stand on the issue.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Nov 05, 2017, 05:44 pm
Hi,
You need to get out in the winter sun, naked  :o   :o   :o to soak up the rays and produce vitamin D.

But don't get yourself arrested, they will put you away and then you won't get any sun.

Tom.. :) :o  :) :o
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 05, 2017, 07:33 pm
i would like to think i have a bit more modesty than that. besides, i live in town. what would the neighbors think?  :o  :o  :o

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 05, 2017, 08:04 pm
At this point, does it matter? They would expect it.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 05, 2017, 08:16 pm
it matters to me.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 05, 2017, 08:22 pm
wear a cock-sock then.
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Nov 05, 2017, 10:43 pm
What would the neighbours see if the temp is below zero DegC.

 (Opps don't go there..  :o :o :o)

Tom... :)


Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 05, 2017, 11:07 pm
A well polished utensil, i imagine.
Title: Re: what i have been up to, thus far.
Post by: Henry_Best on Nov 06, 2017, 05:47 pm
What would the neighbours see if the temp is below zero DegC.
He'd get frozen stiff.  :o
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 06, 2017, 06:13 pm
this seems to have gone astray, a bit.  :o  :o  :o

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 06, 2017, 06:33 pm
Just a bit, and only for a minute. 
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 06, 2017, 09:19 pm
I finally got some doors mounted on my server rack, with fans mounted into the rear doors. i haven't finished rebuilding the fan controller though, so i wired the fans direct to the PSU. man them fans are loud at full bore! :o  :o  :o
Fortunately, once the controller is done, they will throttle back per temperature demand. my biggest hang-up right now is trying to get everything stuffed into the cheap 2U rack case i bought for this project. i have to make an all new rear panel for the case, so the PSU, fan connectors, and temp sensor connectors can all be mounted. I also have to put some screen on the fan holes in the rear rack door. no need to have wires getting sucked in. the fans are pretty powerful.  :o
My reasoning for the big fans (12" automotive radiator fans) is that once throttled down, they will be quieter. and when needed (hopefully not), they can exchange a lot of air, in a short time.

One flaw i have detected, is that one 20" X 16" furnace filter may not flow as much CFM as the fans will. it seems to dome up pretty hard. a possible fix would be to mount two more in the front door. but that would block the option of adding plexiglass or lexan to the front door, so i can view my creation. :D

the other issue i have is in mounting stuff inside the 2U case. obviously it wasn't designed for my project, so i will have to custom mount everything. the less i can drill for holes in the metal the better, as i don't like stray metal shavings in my project enclosure. i was kind of thinking of mounting stuff to a small piece of lexan, and then just stick a velcro pad underneath, and have strips of velcro stuck to the bottom of the case. this will also make it easier to upgrade in the future. probably rather unique, but i think it should work.

I seem to be solving my own problems just by writing about them. ;) rather handy. i wouldn't bother to post, but there is a very slight chance something here may be useful to all of 0.00000001 people. ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 12, 2017, 09:40 pm
spent some time with my CrossRoads Mini2560, making a few connections for my server rack fan cooler, when it occurred to me that my DuPont pin terminal crimper is a POS. probably mis-advertized as compatible with DuPont terminations. so anyway, i have it half transferred from my MEGA2560 prototype, over to the Mini2560. it still connects via jumpers to a breadboard, but that will be fixed as i progress. rather than wire it from the underside, i wired it from the top side, adding pin headers as needed (in case of upgrade).

i haven't connected the WiFi board yet, as i have to go back through my schematics to translate the Arduino pins to port bits. it was a good stopping point for now anyway. i did upload my latest sketch to it though, but it halts when it looks for the WiFi board, so that's as far as that went.

in the mean time, i may re-code the sketch a bit, with some #ifdef statements to block the WiFi portions, so i can at least wire it to the fans and test everything so far.

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 14, 2017, 09:31 pm
I thought of an interesting idea for my wildly under-used Raspberry Pi 3. i could set it up for digital signage (Screenly OSE), and set it to display a non-public portion of my website that i can setup as a family appointments calendar. people here at home can use my website to enter appointments, and the digital signage Rpi with a small HDTV could be located in a central location, so for instance, if somebody was far later than usual getting home, one look could confirm or deny an appointment.
That's just one thought i had though. I have also thought of using it as a large central display, showing data from various Arduinos logging telemetry. for instance, a weather monitoring system. i could even combine the two, and provide a calendar, with the weather telemetry. whatever i end up with, i will make it open-source, so others can use it, and make it better (or worse ;) ).
I bought a weather station sensor set, similar to the one SparkFun (https://www.sparkfun.com/products/8942) sells. but i got it off eBay (https://www.ebay.com/itm/WeatherRack-Wind-Rain-Sensors-for-Arduino-Raspberry-Pi-SwitchDoc-Labs-NEW/391922268354).

pricey, but not so much when you compare to full fledged stations. my plans are to have a bare-bones ATMEGA328P at the base of the weather station. it will read the sensors, and fire the data off via RS485 to the data-logger arduino inside the house. I will have to include a temperature sensor, as the weather sensor set does not include one. I have several DS18B20 sensors.
then i just have to connect the data-logger arduino to my network, and run it as a JSON web server. it will be used in a similar fashion as my server rack monitor, so it can be read with a PHP script to update the info on the central weather and calendar page that the Rpi digital signage will read from.
in any case, it will be one of many winter projects to keep me busy.

as stated before, as i get some working code, i will pop it up on my GitHub for others to use. at least the Arduino code, and the PHP as well.

I haven't worked out the calendar bit yet. somehow i have to make it viewable from the internet, by immediate family when they are outside the range of the WiFi, yet keep it secure against others. probably just some standard PHP/MySQL authentication, and display it only via my SSL side of my server. but the key component of the calendar and weather, is i will have to have one page that the digital signage displays, and have it integrate with the data (read-only). it is all easy enough, in thought. i just have to get some code going.

Something i thought of, that would be handy. i have an Adafruit thermal receipt printer. it would be neat to have the household grocery list integrated in as well, and make it so family can add items. then just hit a button by the viewer, and print out the current list. it would be neat, but probably not as easy as i would want. ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: larryd on Nov 14, 2017, 10:43 pm
They have weather reports on the news in most countries ;)


.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 14, 2017, 10:59 pm
yes, but they would be more helpful if the local reports were closer than a 2.5hour drive away. ;)
it is just basic sensors anyway. wind, rain, and temp. the ones the weather folks never seem to get very close with, locally. besides, it is more fun to make my own.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Nov 15, 2017, 02:40 am
Hi,
Don't you have access to data like this, from our BOM?

 (http://www.bom.gov.au/products/IDV60801/IDV60801.94852.shtml)
http://www.bom.gov.au/products/IDV60801/IDV60801.94852.shtml (http://www.bom.gov.au/products/IDV60801/IDV60801.94852.shtml)

Tom.. :)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 15, 2017, 11:07 am
Hi,
Don't you have access to data like this, from our BOM?

 (http://www.bom.gov.au/products/IDV60801/IDV60801.94852.shtml)
http://www.bom.gov.au/products/IDV60801/IDV60801.94852.shtml (http://www.bom.gov.au/products/IDV60801/IDV60801.94852.shtml)

Tom.. :)
no idea, but you guys are really taking the air out of my balloons. ;)

what i meant by this:
Quote
yes, but they would be more helpful if the local reports were closer than a 2.5hour drive away.
is that the weather radar, and the people that interpret it, are a long ways away. so the data for when i step out the door is quite often very different from the professional weather report. with the mountains, hills and valleys, even the local in-town readings can be different from one side of town, to the other.

BTW, from your BOM, 16.8C would feel nice about now (about -1.1C here, according to the weather report anyway ;) ).

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 17, 2017, 09:49 pm
well, i had a doctor appointment today... she says i have stage 3 (or 4, i don't remember) kidney disease. apparently my kidneys are only functioning at about half their expected rate, or something. so, no more ibuprofen for my hellatious back pain (degenerative joint disease, AKA: arthritis).

in other news, my weather sensor set should show up today, at some point. i just have to figure out the best place to mount the sensors, and still be able to get to them for adjustments or repairs. the solar radiation shield for the thermometer, and other stuff (humidity, barometric pressure, and whatever else) can all be mounted low.

~Travis
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Nov 18, 2017, 03:21 am
well, i had a doctor appointment today... she says i have stage 3 (or 4, i don't remember) kidney disease. apparently my kidneys are only functioning at about half their expected rate, or something. so, no more ibuprofen for my hellatious back pain (degenerative joint disease, AKA: arthritis).

in other news, my weather sensor set should show up today, at some point. i just have to figure out the best place to mount the sensors, and still be able to get to them for adjustments or repairs. the solar radiation shield for the thermometer, and other stuff (humidity, barometric pressure, and whatever else) can all be mounted low.

~Travis
Sorry to hear about the kidneys mate, my wife had hers fail for about 24hours due to blood poisoning.

In the days leading up to it she was very ill.
She recovered, but not full function, fortunately she only needed 24hours of dialysis to come good, but  then had to have regular blood tests.

I get about 5 years out of my weather stations, UV certainly takes its toll, especially in the wind vane and wind speed cups.
My last one died after a lightning strike about 1/2 a km away, when I took it down, most of the plastic was stuffed or lost its shine and one of the cups fell off due to UV of 5 years.

The only thing that was recoverable was the rainguage unit.
The main electronics looked okay, but no Tx.
(https://forum.arduino.cc/index.php?action=dlattach;topic=475538.0;attach=233906)
A lovely Spring day here... lol
Tom..... :)
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 18, 2017, 10:03 am
Sorry to hear about the kidneys mate, my wife had hers fail for about 24hours due to blood poisoning.

In the days leading up to it she was very ill.
She recovered, but not full function, fortunately she only needed 24hours of dialysis to come good, but  then had to have regular blood tests.
i hope i don't need dialysis, but whatever will be, will be. i don't have to have super regular blood tests. well, every 6 months right now anyway. so far they are holding, but the doc just wants to make sure they don't take a steep decline. IOW, if they can catch it in time, they can treat it faster.

Quote
I get about 5 years out of my weather stations, UV certainly takes its toll, especially in the wind vane and wind speed cups.
My last one died after a lightning strike about 1/2 a km away, when I took it down, most of the plastic was stuffed or lost its shine and one of the cups fell off due to UV of 5 years.

The only thing that was recoverable was the rainguage unit.
The main electronics looked okay, but no Tx.
a little disheartening about the UV damage to the plastic. you would think they would make the parts from metal, though that would drive up the cost. as for the lightning, i may switch from a wired RS485 connection, to a RF connection. at least it would lessen the damage in a strike. perhaps battery power as well, with a solar panel.

Quote
A lovely Spring day here... lol
Tom..... :)
bit of a hot (https://www.wunderground.com/weather/us/me/farmington/04938) morning here ;)
My weather sensors didn't show up last night, as UPS promised. now they are expected on Monday, so i will have to wait a bit longer before i can test the code i wrote (well, modified from the SparkFun example).

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 19, 2017, 11:15 pm
on my weather station project, i ordered the SparkFun weather shield (https://www.sparkfun.com/products/13956) as a base, to fill in sensors i don't have. I just have to build my solar radiation shield in such a way that the arduino and all are inside it. so that means subjecting the Arduino to temps in the low range. depending on the severity of the winter, it could get very cold. I realize this may affect many different aspects of the MCU chip, as well as other components. so here is my rough plan:

i will use extra long pins between the Arduino and the shield, and that should allow room for some light insulation, like 1/4" to 1/2" foam insulation. that way i can place a mild heat source on the Arduino side, to keep it just within the limits, i hope. so only the sensors and sensor shield will be in the bitter cold.

the solar radiation shield will be a louvered box, with foam insulation on the top, and sides to block heat radiating in from the solar radiation, so as to only sense the air temp. the sides with the louvers, will also have foam arranged so that no heat is directly radiated in. there will also be screening to make sure mother nature doesn't come crawling in.

the heat source for the arduino should be interesting to figure out. if this is running on battery power, i don't want too much extra draw. will have to give it some thought. and in the summer, it may be called on to cool the Arduino... (not likely a problem, in Maine, USA)

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 20, 2017, 12:07 am
you can put a small fan instead of all that foam and it will take care of the solar radiation. Thats what my vantage vue does. It's controller is inside of an insulated box, then all the data plug in using rj45 connectors.

I think if you had a solar panel that output 7v, then use a linear regulator to output 5v it would provide enough heat to keep things warm enough in an enclosed space.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 22, 2017, 12:40 am
 :o ... I think i may have a problem... it is PayPal Credit. i first signed up for it to help pay for a large item. i have never owned a credit card, just my bank check card (debt card), and now i know why. i seem to have acquired a $1400 credit debt. i can afford to make payments, that is not the issue. i keep using it!  :o  :o  :o
I hereby make a vow to no longer charge to my PayPal Credit. i will pay it off as i can afford, and when it is paid off, it is done!

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 24, 2017, 11:00 pm
you can put a small fan instead of all that foam and it will take care of the solar radiation. Thats what my vantage vue does. It's controller is inside of an insulated box, then all the data plug in using rj45 connectors.

I think if you had a solar panel that output 7v, then use a linear regulator to output 5v it would provide enough heat to keep things warm enough in an enclosed space.
yeah, i think the fan will help, but i think i will still want at least some 1/4" foam, just as a thermal break. i will have to play with the idea a bit.

:o ... I think i may have a problem... it is PayPal Credit.
my reasoning behind this, is when i maxed out my PayPal credit, on top of what was already there, by buying a used telescope (Meade ETX 80), and to go with it, a used DSLR camera (Cannon EOS T2i, body only) to mount right on the telescope. granted, i have wanted one for many, many years, but the fact that i keep bouncing off the max limit is what scared me.

but, i have joined an astronomy forum, so i can get help learning my new additional hobby.
My hope is that it will give me a reason to go outside my comfort zone, and maybe meet new people, in person. and maybe even gain some friends. i have already found a local observatory, at the local university (never knew the observatory was there, all these years...).

Why start an outside hobby, in the winter? i tend to go to bed by the time the sun sets in the summer. but in winter, it sets around 4PM, so i have some time before i go to bed.

As for my weather station, i think i have found a location for it, maybe. before making it a permanent fixture, i will have to set it up, partially, and see what it reports. i was thinking of mounting a 20' (or more if needed) pole somewhere near my CNC camper, and use the front of the camper to house the data collection, the batteries, and whatever i figure out for data transmission. i may be able to use the pair of Xbee modules i have sitting around.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Henry_Best on Nov 25, 2017, 07:38 pm
As for my weather station, i think i have found a location for it, maybe. before making it a permanent fixture, i will have to set it up, partially, and see what it reports. i was thinking of mounting a 20' (or more if needed) pole somewhere near my CNC camper, and use the front of the camper to house the data collection, the batteries, and whatever i figure out for data transmission. i may be able to use the pair of Xbee modules i have sitting around.
Unless your pole is a foot thick (telegraph pole size), at 20' it will vibrate in the wind and shake your weather station to pieces. Also, you should set it deep into the ground and surround it with concrete.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 25, 2017, 07:41 pm
Hmm, that may complicate things a bit. didn't really think of what the wind would do to the pole.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Henry_Best on Nov 26, 2017, 05:56 pm
Hmm, that may complicate things a bit. didn't really think of what the wind would do to the pole.
Guy ropes (steel cables?) may help, as would a shorter pole. It you decide on steel guys, remember that you'll have to account for expansion/contraction due to temperature variation.
Title: Re: what i have been up to, thus far.
Post by: allanhurst on Nov 26, 2017, 07:59 pm
Many overhead power line poles  where I live are braced with steel cables and tensioned with  turnbuckles.

They seem to survive the seasons without adjustment

Allan
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 26, 2017, 08:57 pm
It is only going up 20ft...  Get a 30ft flag pole and be done with it.

https://www.walmart.com/ip/YesHom-30-ft-Flag-Pole-Kit-Telescopic-16-Gauge-Aluminum-Flagpole-Free-3-x5-US-Flag-Ball-Fly-2-Flags/469521038?wmlspartner=wlpa&selectedSellerId=1913&adid=22222222227071688088&wmlspartner=wmtlabs&wl0=&wl1=g&wl2=t&wl3=181792617098&wl4=pla-285060371882&wl5=9008542&wl6=&wl7=&wl8=&wl9=pla&wl10=113510113&wl11=online&wl12=469521038&wl13=&veh=sem


You only need to but the aenometer on the top of the pole. Telescoping for easy retrieval.  If you don't but a flag on the pole and just but the aenometer on top, it won't wobble to much. These things survive huge sails being attached to them (flags) a couple of pieces of plastic won't be a problem.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 26, 2017, 11:24 pm
It is only going up 20ft...  Get a 30ft flag pole and be done with it.
interesting, HFT had one that was only 20'. good to know there is a taller option.

Quote
You only need to but the aenometer on the top of the pole. Telescoping for easy retrieval.  If you don't but a flag on the pole and just but the aenometer on top, it won't wobble to much. These things survive huge sails being attached to them (flags) a couple of pieces of plastic won't be a problem.
the anemometer, wind direction are designed to be at the top, but yes, i can put the rain bucket and other sensors down low. as for the telescoping flag pole, i would have to install pins, or at least reference marks to keep the wind direction pointed right.

as for the pole surviving, that is not in question. it is the survival of the sensors in -40C wind gusts, when the pole is shaking in a nor'easter. having the larger rain bucket down low should help a lot.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 27, 2017, 12:16 am
On my pole, (i am using it has a flag pole) there are already pins that hold the sections of the telescope up. The pins only go in two ways (180 degrees from each other) The pole i linked to you is a cheap model and therefor probably only has one pin, which means it will only go together one way. On the base, you set what that way is by rotating a first leg and screwing in a set screw.
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 27, 2017, 12:17 am
-40c?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 27, 2017, 12:19 am
-40c?
temperature. it does get that cold here sometimes.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 27, 2017, 03:52 am
yeah, i was disappointed to learn that's only -40F :(
Title: Re: what i have been up to, thus far.
Post by: CrossRoads on Nov 27, 2017, 03:56 am
Kidding, right?
The Fahrenheit and Celsius scales intersect at −40° (i.e., −40 °F = −40 °C).

Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Nov 27, 2017, 04:40 am
yeah, i don't store that information in my head.... i know 0c freezing, 30c hot,  and 100c boiling. Other than that DONT CARE.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 27, 2017, 11:11 am
would you rather i stated the temperature in Kelvin? makes it look more exciting. ;)
-40F/C is about 233.15K :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Nov 30, 2017, 11:21 pm
so, got my DSLR camera lens today (still waiting on the scope...), so i can at least get used to using the camera.

I also got the SparkFun board for my weather sensors, so i expect i should make a little progress on that project.

I haven't forgotten my server rack cooler project, it is just on the side burner, simmering. my soldering skills seem to be falling off for some reason. hands are a little shaky i guess.

but anyway, tis the season for gift giving, so i will hold back personal spending, other than bills for a while. so my projects will be on a financial hold (still a go, until they need more money ;) ).

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Dec 01, 2017, 12:27 pm
interesting... just found out my telescope (not arrived yet) is only a 400mm focal length. I remember seeing a telephoto lens with far more, i think.  :o
Now i just have to learn all i can find about using my camera. previously, i have used just point-and-shoot style cameras.

I have always enjoyed taking landscape and wildlife pictures, so maybe this additional hobby will get me outside more. i could certainly use the exercise, seeing as how i unfortunately passed the 300 pound mark. (mostly due to Abilify.. and lack of energy to do much) i mean, i am 6' 3", so the pounds don't show quite as much. but i definitely feel it when climbing a ladder with a 90 pound bundle of roof shingles.

but anyway, i have to get ready for work (only a half day today anyway), but much to the disappointment of some, i will return this afternoon. ;)

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Dec 01, 2017, 07:30 pm
my Telescope has arrived! it seems to work quite well, though darkness will tell more. One thing i noticed, the camera would mount on the back, but when the scope is near vertical, the camera would crash into the mount fork. so... bit of a snag there. i have some software i downloaded (PHD Guiding 2), and a bit of arduino code (OnStep). so with a bit of ingenuity, i should be able to make an equatorial mount, using some steppers, and such. the hard part will be the slow drive. the more gears, or belt/pulley reduction, the less precision. but i am thinking if i use timing belts, a stepper pinion, and a really big driven pulley, that i should have at least something i can learn from. the big pulley can be just a circle of wood, with the belt fastened to it, as there is no need for a complete revolution. when the scope is down to the horizon, it need not move more...
I will either need some very smooth bearings, or a smooth bushing for the pivots.
I have NEMA17 steppers that should work (very low reduction, and the load will be counter-weight balanced), and some extra stepper drivers. i may even have an arduino kicking around somewhere. ;)

so, seeing as how i never took physics, it should be an uphill struggle to get the reduction calculated to enter the settings into configuration. :D i will have to study the code some to get it figured out.

~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Dec 01, 2017, 09:04 pm
Maybe your next project should be a squat counter.
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Dec 01, 2017, 09:22 pm
maybe, but with my line of work, i can actually lose weight pretty easy. i just have to go off the Abilify. though, then i would be having moments of severe, and unfocused rage, with a hair trigger. i am not a good person when i am off my meds.  :o

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Dec 01, 2017, 11:03 pm
right, so i get my scope all ready, and head outside with it... cloudy sky!
so, not tonight i guess...

~Travis
Title: Re: what i have been up to, thus far.
Post by: allanhurst on Dec 02, 2017, 12:05 am
The earth rotates once in 24 hours, so you need that rev rate...   1/1440 or  about 0.000694 rpm.

Allan
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Dec 02, 2017, 12:11 am
I don't think a stepper would work, since it has discrete steps, you would notice the steps....
Title: Re: what i have been up to, thus far.
Post by: TomGeorge on Dec 02, 2017, 01:14 am
Hi Travis,

For your tracker drive system , you may get some ideas from the DIY  Barndoor Trackers that track cameras.

google   barndoor tracker

Tom... :)
PS Like all of us mate we, "keep taking the tablets"   lol
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Dec 03, 2017, 12:43 am
Hi Travis,

For your tracker drive system , you may get some ideas from the DIY  Barndoor Trackers that track cameras.

google   barndoor tracker

Tom... :)
PS Like all of us mate we, "keep taking the tablets"   lol
I have researched barndoor trackers, but from what i have read, they aren't very good for long duration, like a equatorial tracker.
But the simplicity has crossed my mind, more than once.

I don't think a stepper would work, since it has discrete steps, you would notice the steps....
a lot of them use steppers. is is all in the reduction system. with enough reduction, the camera will not see the step movements, as much. but it has to be a smooth system too. a lot of gear slop, for instance, would be very visible.

I can build (read as "over build" ;) ) the mount from a combination of wood, and metal pieces, as long as the pivots are strong enough that they won't shake much. and i have a CNC router now to cut the parts out. :D

~Travis
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Dec 03, 2017, 09:56 pm
Thats it, no more buying my hopes and dreams! it never turns out the way i want, and all i do is accumulate unused hobbies, with no money anymore! i don't even want to know how much money i have tied up in unused hobbies. so, to paraphrase a US president, "Read my lips: No new hobbies"!

Code: [Select]
Photography - early phase, but eager.
Astronomy - early phase, but eager.
Electronics - still continuing.
Computer Programming - Arduino mostly, still continuing.
HO Model Trains - Back burner, collecting dust.
CNC wood routing - Back Burner, but very eager to return.
Drums - Back burner, collecting dust.
Ham Radio - Back Burner, collecting dust.
Woodworking - Still continuing (my job).
My Server - Still continuing, may drop the unused forum.
Weather Watching - Back Burner, for now.
Motorcycle Riding - Back Burner, may sell in spring.


~Travis
Title: Re: what i have been up to, thus far.
Post by: Qdeathstar on Dec 03, 2017, 10:22 pm
did they end up giving you that liscence?
Title: Re: what i have been up to, thus far.
Post by: travis_farmer on Dec 03, 2017, 10:24 pm
did they end up giving you that liscence?
still pending, but i am sure it is sitting in the "circular file".

~Travis