Show Posts
Pages: [1] 2 3 ... 84
1  Using Arduino / Project Guidance / Re: Bluetooth and Pressure on: August 29, 2014, 02:12:44 pm
WHOA OunceofTech!


calm down.

while I normally agree.. if someone doesnt like a post.. they should just skip it...
(and I couldnt really think of anything suspicious myself you could be wanting to do)..  I really didnt think the post/comment was that bad.  Not helpful..  but hardly 'snarky'..

Some people are respectful of how their advice will be used and do not want to accidentally contribute to any illegal activities or do anyone's 'homework' for them..etc  (you understand)

If you search for bluetooth and Arduino.. your bound to get more results than you care to read.  smiley

or HC-05/06...etc

they are just like serial devices... and dead simple to use (even for me) smiley-wink

Hope this helps

2  Using Arduino / Project Guidance / Re: Bluetooth and Pressure on: August 29, 2014, 02:07:19 pm
The most common and cheapest BT modules used are the HC-05 & HC-06 modules.

(usually around $5.00 USD or so)

As far as the sensor you want to use.. 'It depends'...

Is just a simple there or not there reading you want?  are you trying to gauge the weight or pressure? (as the tile implies?)

If the former,... is much easier, but depends on how/where you plan on mounting it?  A simple switch/button or lever switch..  or even two pieces of conductive wire or something would work..



3  Using Arduino / General Electronics / Re: Basic Electronics Question on: August 27, 2014, 02:38:05 pm
It does not have separate leads, I linked to the switch I bought (I actually bought mine from a china site cheaper).


huh?  Are you sure?   Sure looks like it to me from the picture.  How else would you power the led then?

I have used these AV (Anti Vandal) switches before in the past and all have had leads to power the LED..


Actually right on the Adafruit site it says:


On the back there are 3 contacts for the button (common, normally-open and normally-closed) and 2 for the red LED ring (+ and -). Connect 3 to 6V to the LED to have it light up nicely, there's a built in resistor!
4  Using Arduino / General Electronics / Re: Switching voltage regulator Arduino Yún and a servo on: August 27, 2014, 02:13:29 pm
post pictures of your wiring/diagram..


5  Using Arduino / General Electronics / Re: "Group purchase" of electronic components on: August 27, 2014, 02:00:46 pm
Sounds nice..

and not only do I mirror MarkT's thoughts.. my initial reaction was to look at your post count, and get some sort of idea about your place int he community here?

If this was a 'big name' (on the forum).. I would probably have an easier feeling giving this a try....


*Tip: never send anyone money over PayPal as a 'GIFT'..  you will have no protection over the money sent if done this way.
If you send as payment for goods you can (somewhat) use PayPals tools to recall or dispute the payment for the quality or lack of goods...etc

If there is a guarantee on the quality and arrival of goods, it might be worth while.

Is there a minimum order on your end? (To make it worth your while?)

Most of the time the costs of goods are NOT the problem.... but the shipping costs can make a part double/triple the price.

Thanks!
-xl
6  Using Arduino / General Electronics / Re: Arduino build Schematic on: August 27, 2014, 01:48:26 pm
1.) Thanks for posting and pointing out the flaws MarkT

IMHO, this type of post is dangerous to new users who may not be experienced enough to know better and blindly follow


2.)The original post reeks of self promotion.. (tsk tsk).. 

wanting new users to their site?  posting a link back to their site (to a bad project/schematic)

Even if this is allowed I seriously question if this post belongs in the General Electronics (HELP) forum/section
7  Using Arduino / General Electronics / Re: The right parts to make my project smaller.... on: August 22, 2014, 04:55:56 pm
I'm not going to argue or debate with any of you. This particular section of the forum is labeled as a general area, I was looking for non-specific answers so I assumed this would be the right place. All I was asking is if there is a different item that does what a TIP120 Darlington Transistor does. I was not looking for advice on how to use or anything of that nature. Simple question - Simple answer.

Of the part numbers i was given only one turned out to fit my project. I had to look into them but thats all I wanted was a point in the right direction. I see people on here all the time that will flat out ask for someone to give them the answer. And these people get chewed out for not trying to figure it out on there own. Well I wanted to figure it out on my own and simply asked for  a direction to look in. I am perfectly okay with popping a few chips here and there.

I don't understand why I can't ask a simple, generic, general question about a part without giving up my entire project. the details I did get into in my original post were only given to be conversational but whatever. I figured it out.

I understand your stance..

but truly, (even if it comes off a bit abrasive)..  over the internet, people are just trying to get a grasp of your skill level and try to get all people to understand & use the same terminology. (Its helps to keep people on the same playing field)..

but on the flip side... some of the people are here ALL THE TIME (by choice, un-paid, free-will they offer help)... and from time to time it can be frustrating when either the same questions are asked over & over.. or certain basic assets are omitted when seeking help.   (help them help us sorta stance I guess)

Its also an attempt to understand the project fully, so they can provide a solid and correct answer.
Sometimes that little missing detail can change the answer or optimal part of choice.

On the flip side.. many people are TRAINED professional and either are or have been doing this for many years.  (so its easy for them to take certain things/knowledge for granted... or expect everyone to have the same foundation to work from)...

It can be frustrating to provide answers to 'hobbyists' at times....(I'm sure)...  and at that point those members just need to either pass or ignore the post instead of being 'snarky'...  IMHO though,.. I havent see any of that here, in this thread.

It seems that you are more frustrated with the lack of experience, making the questions/answers that much harder to interpret.

There are TONS of 'noobies' here (myself included, and you'll never make everyone happy, some only want the code in question, some want it all to put it into perspective...etc..etc.. yadda... yadda).. but I have found that if you can show you have gave an attempt, proof of effort, (links, datasheets, tutorials you worked from..etc) the response if much better.  (it also makes it easier for them to help)

Good luck!

8  Using Arduino / Audio / Re: Anyone have an Adafruit Wave Shield? I need a few measurements taken. on: August 11, 2014, 01:58:33 pm
I have a few (and a custom hybrid version as well)..

however I am at work.. and will have to wait until I am home...(if that works for you?)

I'll use my digital calipers.. (as accurate as that can get at least)
9  Using Arduino / General Electronics / Re: what's this phenomenon called? on: August 11, 2014, 01:50:41 pm
Quote
Bipolar Power Supplies
<poor taste joke alert> Can you cure those with lithium batteries? </ptja>

I'll get me coat.

haha.. "I" laughed at least..
10  Using Arduino / General Electronics / Re: Directional keypad on: August 08, 2014, 03:57:33 pm
Myself... I would look at some slim-line remotes for dvd players.. or kids toys... (usually a gold mine of junk there to salvage)

IMHO though... the 'top side' is NOT the crucial portion of this..

is the underlying 'buttons' and connection that count.  the top can be re-done user a laser or even a vinyl cutter..etc..

get some extremely small/flat buttons/switches...  and work out the connectivity..

or see if you find an old key fob/remote that has the button layout you want. you can erase the 'markings' and re-do them yourself in any fashion you choose...

the care remote/fob idea might be the best approach as your getting a 'case' too... and I would think there is anough room inside to 'transplant' what you want..

is this a wired keypad? (if so that makes it easier)..

even if the remote/toy you have has extra stuff.. you can cut the top layer off and keep the direction key portion and laminate it over/onto your final 'case'.

what size are you looking for this to be?

11  Using Arduino / General Electronics / Re: Cheapest PCB house? on: August 07, 2014, 02:11:29 pm
iTead
elecrow
SEEED

are the ones I have used before..

all have their pros/cons..  some offer slightly better prices.. others offer free color...etc..

depends on the size of the PCB you want made.. and qty.

12  Using Arduino / General Electronics / Re: Directional keypad on: August 07, 2014, 01:51:09 pm
scavenge the part form these 'electronics' you see..

or make your own?

or go for a 5-position button??
13  Using Arduino / General Electronics / Re: Strange acting motor + servo combo! on: August 07, 2014, 01:49:28 pm
Are you sure there is enough current for everything?
I believe servo's can take up to 1A when under load...

Also.. never use those rectangle 9v batteries... they are notorious for being JUNK.
14  Using Arduino / General Electronics / Re: L298N Dual-H Bridge DC Motor Driver on: August 07, 2014, 01:46:10 pm
You plugged it into.. what?

The Arduino?  The Driver?

Is the L298N a bare chip on a breadboard?  a pcb?..etc..

Did you have the connections correct? (not reverse polarity?)

How about some pics?

15  Using Arduino / Project Guidance / Re: Bluetooth based watch and socket on: July 27, 2014, 09:09:18 pm
no.. I dont think so....(re:RFID)

from what I know from playing around with my MiFaire RFID set-up is that the range is extremely limited.  were talking 'near' contact only...  so they would have to lift something up off it/away from it and the relay would trip..  There may be other set-up they have a it more range, but not sure how large really and at what prices.  (do you need something mobile?)

what 'IS' the limit you are looking at?  you're not really telling any real specs you are looking to build for/toward. smiley


I would google all these topics yourself to make sure I am even correct... I am an noobie myself, and these comments are just from my limited reading and mostly knowledge/results from playing around with these components (ordered through ebay).. lol..

I'm a sure someone before you has wanted to know the distance using bluetooth.. (maybe with another component as well?)  see how they approached and solved it.

Pages: [1] 2 3 ... 84