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Topic: Share tips you have come across (Read 131235 times) previous topic - next topic

larryd

#660
Dec 19, 2018, 10:37 pm Last Edit: Dec 19, 2018, 10:40 pm by larryd
We have all used a bladed screw driver to get into a press fit plastic box, scratches everywhere.

A good set of spudgers is a must have for opening electronic boxes, remote controls, hand-held devices and to manipulate wiring.

Both stainless steel and none conductive plastic are available.







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ElCaron

#661
Jan 02, 2019, 05:21 pm Last Edit: Jan 02, 2019, 05:25 pm by ElCaron
64x128 char LCD fit almost perfectly into the opening in fuse boxes, resulting in a very clean case for larger projects. This one is for this project.
The PCB can be attached to the DIN rail.





dougp

#662
Jan 07, 2019, 04:40 am Last Edit: Jan 07, 2019, 10:30 pm by dougp
Wire cutting guide using drinking straws.

Stumbled on this on YT - https://www.youtube.com/watch?v=RZBgPfDoMQQ.  Start at 18:20 timestamp.

Looks pretty nifty if you're doing a lot of wire cutting.




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Everything we call real is made of things that cannot be regarded as real.  If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet. - Niels Bohr

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larryd

#663
Jan 07, 2019, 04:59 am Last Edit: Jan 08, 2019, 03:40 am by larryd
Nice.




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zubuyer

To people who uses CURA (> v3) for 3D printing and uses the same machine for programming Nano, I found out if you have Cura open and hook up your Nano, the Nano keeps restarting frequently (eventually it stops, but really annoying). Solution is to turn off Cura. Im using a Mac so dont know if this happens on Windows PC.

thought I'd share this little quark. Have a great day!

larryd

#665
Jan 12, 2019, 07:00 am Last Edit: Jan 12, 2019, 07:01 am by larryd
Two more.

Cutting small wires:



For just a small amount of epoxy:



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KingDubDub

Wire capacitors in parallel to get a higher uf. That might not be ground breaking to pros, but to a new maker, this is mind-blowing. It allows you to use multiple ceramic capacitors for making a slightly larger ceramic capacitor, good if you don't want to buy new parts but want to use up lots of old capacitors.

dougp

Some construction techniques/tips I hadn't seen before.  It didn't get interesting for me 'til 6:00.

I thought the aluminum wire hold down was pretty nifty.

8-bit guy apple II project
Everything we call real is made of things that cannot be regarded as real.  If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet. - Niels Bohr

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Henry_Best

#668
Feb 25, 2019, 08:48 pm Last Edit: Feb 25, 2019, 08:50 pm by Henry_Best
Some construction techniques/tips I hadn't seen before.  It didn't get interesting for me 'til 6:00.

I thought the aluminum wire hold down was pretty nifty.

8-bit guy apple II project
In that video, the method for finding the position of holes was using a piece of paper to trace them. I've used a flatbed scanner to do the same job. Just scan the board with the cover open (mind your eyes) and print in monochrome at 100% (without scaling). The holes show as black spots on a lighter background. Cut the print to shape and tape in position for drilling.

larryd

"Desoldering without hot air."

https://www.youtube.com/watch?v=CVsmwFAkf7I


Some of these techniques work quite well.


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larryd

#670
Mar 03, 2019, 04:18 pm Last Edit: Mar 03, 2019, 06:12 pm by larryd
Build a Short Circuit Sniffing Power Supply.

A handy piece of test equipment to have on your work bench is a DIY Short Circuit Sniffing Power Supply.

A small prototyping PCB, a few common electronic components and a plastic case gives a compact test unit.

The PNP transistor needs to have a gain of ~200 while the NPN needs to be ~100.

Q1 has a heat sink attached.

External wires connected to this power supply should be 18 AWG.

See discussion at this link for using this power supply.
http://forum.arduino.cc/index.php?topic=601183.0


Two versions of the power supply are offered in the attached PDF.









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TomGeorge

Hi,
I like it Larry, just needs a LED to indicate that it is or isn't in current limit mode, and possibly  a beeper.

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

srldiagnostics

larryd very very good i have inspired

dougp

#673
May 04, 2019, 01:23 pm Last Edit: May 04, 2019, 01:25 pm by dougp
Not really a tip but, this seems like a good place for it.  I needed a template for a 1602 LCD display.  This one worked best for me.  I had to tweak the zoom to 151% to get it just right.  Offers the option to have the display recessed or extending through the panel.

https://cdn.instructables.com/ORIG/FRM/XRRB/HEBNAQ79/FRMXRRBHEBNAQ79.pdf

A snip image, since the forum won't show a linked .pdf



Everything we call real is made of things that cannot be regarded as real.  If quantum mechanics hasn't profoundly shocked you, you haven't understood it yet. - Niels Bohr

No private consultations undertaken!

JohnRob

#674
Jul 31, 2019, 03:55 am Last Edit: Jul 31, 2019, 03:56 am by JohnRob
Solderless breadboard for NodeMCU.


My Amica NodeMCU has the pin rows spaced at 0.9 inches.  If I use a "standard" solderless breadboard there is only one row of contacts exposed.  

So....... I cut a breadboard in half and stuck it on a piece of FR4 spaced so the NodeMCU pins start at the first row of contacts.

Please do not PM me with thread based messages.  If your thoughts are worth responding,  the group should benefit from your insight.

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