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Topic: Share tips you have come across (Read 88601 times) previous topic - next topic

larryd

#420
Nov 30, 2017, 10:22 pm Last Edit: Nov 30, 2017, 10:26 pm by larryd
"Its not so much about age as quality."
I know how that feels ;)

I do use those standoff's for some projects.

I think heat might be a factor too, but with low power stuff, not much of an issue.

I was just thinking, a small diameter wooden or plastic dowel with a hole in the top and a tight fitting push in 2-56 screw might work as well.

Edit
Agree, the clear cable ties do not like UV.
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No technical PMs.
The last thing you did is where you should start looking.

larryd

Maybe a modified version of this would work too:





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No technical PMs.
The last thing you did is where you should start looking.

westfw

Quote
The Arduino designers made major mistakes in the placement of the mounting holes.
These were placed too close to headers etc.
Well, it was more like they added additional headers after the screw holes had already been fixed in place.  Go back to the duemilanove (or even the Uno V1), and there's plenty of room around the mounting holes.

dougp

#423
Dec 02, 2017, 06:20 pm Last Edit: Dec 02, 2017, 06:36 pm by dougp Reason: add photos
The Arduino designers made major mistakes in the placement of the mounting holes.
These were placed too close to headers etc.
I avoided that problem by cannabilizing a cheap plastic Arduino enclosure to use as the mount.  Too much trouble to try to keep four holes perfectly placed.  This way I only need two holes for the enclosure itself and there's play for slight adjustments.










So two neutrinos went into a bar.  Nothing happened.  They were just passing through.

Boardburner2

Maybe a modified version of this would work too:





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I have used old biro tubes cut to length in the past , there is a bit of slop to allow some mis alignment betwen hand drilled holes as well.

larryd

#425
Dec 03, 2017, 06:10 am Last Edit: Dec 03, 2017, 06:52 am by larryd
A few hints on making 'Infinity Mirrors'.
One ProMini, some code, 47 neopixels, acrylic frame and some woodworking skills can result in a nice gift idea (or 6).











https://www.tapplastics.com/product/plastics/cut_to_size_plastic/acrylic_sheets_mirror_clear/521

https://www.tapplastics.com/product/plastics/cut_to_size_plastic/two_way_mirrored_acrylic/558


No technical PMs.
The last thing you did is where you should start looking.

larryd

#426
Dec 03, 2017, 06:10 am Last Edit: Dec 03, 2017, 06:26 am by larryd










No technical PMs.
The last thing you did is where you should start looking.

Jiggy-Ninja

I made an infinity mirror with my sister, it was a lot of fun. Put it down on the floor and it just looks so weird. What I want to make next (one of a couple "above and beyond" enhancements of old projects I've done) is make an infinity digital clock with APA120s embedded into the mirror so I can do some color-fading effects with the time display and border LEDs.

The most ugly thing about most RGB LED strips is the discreteness of the individual LEDs. From a close enough distance, your eyes can clearly perceive the spacial difference between light spots. has anyone found a good tactic for diffusing individual SMD LEDs? I'm thinking of trying a very small blob of hot glue and seeing if that takes the edge off it. It's slightly translucent.
Hackaday: https://hackaday.io/MarkRD
Advanced C++ Techniques: https://forum.arduino.cc/index.php?topic=493075.0

larryd

#428
Dec 13, 2017, 06:03 am Last Edit: Dec 13, 2017, 06:03 am by larryd
Sometimes a simple tool will do just fine.






No technical PMs.
The last thing you did is where you should start looking.

larryd

#429
Dec 24, 2017, 11:01 pm Last Edit: Dec 24, 2017, 11:04 pm by larryd









No technical PMs.
The last thing you did is where you should start looking.

TomGeorge

#430
Dec 24, 2017, 11:28 pm Last Edit: Dec 24, 2017, 11:38 pm by TomGeorge
Hi,  larryd.

Merry Christmas mate, ( 9:15am Christmas Morning here ) this thread has been great through the year, keep it up.

This week  I took delivery of 30   12 x 3 mm neodymium magnets, will check the Boxing Day specials for a suitable tin.

I gather the most suitable tin has to have had some decadent foodstuff that us type 2 diabetics aren't supposed to have.

The sacrifices we make.

Tom... :)
Everything runs on smoke, let the smoke out, it stops running....

westfw

Quote
[aunt alice's cookie tin...]

larryd

#432
Dec 25, 2017, 12:59 am Last Edit: Dec 25, 2017, 12:59 am by larryd
Look out for a nice big rectangular one.





Still not Christmas day here yet.  :)

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No technical PMs.
The last thing you did is where you should start looking.

larryd

#433
Jan 03, 2018, 05:49 am Last Edit: Jan 03, 2018, 06:24 am by larryd
I have been fighting with intermittent charging on our iPads.
Tried several commercially available USB 6' extension cables to keep the iPads plugged in while we use the devices.
Because of the IR drop in the cables, the iPad charging circuit often rejected the incoming voltage levels and would disconnect the units from the chargers.
Out of frustration I made my own 6-foot extension cable with #18 AWG power wires.

Problem solved.

50 male connectors for $6.50
https://www.ebay.ca/itm/321580225851
50 female connectors for $6.12
https://www.ebay.ca/itm/50PCS-USB-2-0-Type-A-Plug-4-pin-Female-Adapter-Connector-jack-Plastic-Cover/321580308336?hash=item4adfae1770:g:FhcAAOSw43haLjXT











No technical PMs.
The last thing you did is where you should start looking.

larryd

#434
Jan 03, 2018, 05:49 am Last Edit: Jan 03, 2018, 06:00 am by larryd
No technical PMs.
The last thing you did is where you should start looking.

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