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finding short on motherboards with a shorty (with display)

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kripton2035:
Hi everyone,


I would like to share a project I made recently : I adapted a shorty device and added a display.
it becomes a 0.1mΩ meter with surprising stability.
the original shorty project is here : https://hackaday.io/project/3635-shorty-short-circuit-finder
I did one showed here (http://kripton2035.free.fr/Projects/proj-shorty.html) and was pleased with its performances, but it lack a display.

here is a video showing the measuring of some small values resistors :
https://youtu.be/4F6QNSpWTos


here another video showing continuous resistance measuring along a soldier roller :
https://youtu.be/8mYyr9uKpFU


and last another video showing how to find a shorted capacitor on a 820-00165 macbook air motherboard.
fast and easy.
https://youtu.be/L4V3BWReZLY


I'm cleaning the schematic and sources, and will share it when it's ready.
just teasing ;)

Fraser:
Excellent. I look forward to reading more of this unit  :-+

Fraser

zoltanh:
Super!!
I built myself a shorty (designed a board with arduino nano, THT and SMD versions, but built till now only THT version; SMD PCB is done but not populated) and did several experiments and several changes. The last version is up to 5 ohms instead of 1 ohm original. I made and tried also few sketches as I changed/experimented the approach how to translate the voltage readings in tones/sound. Actually, I am very pleased, with all versions, original and mine ones how they translated the milliohms in tones. I was thinking about adding a display, and adding voice talking. I started with voice talking implementation. Then I have seen few weeks ago, on other topic hereon the forum, your post about your shorty with display. Since then I put it in hold and I was waiting to see your realization. I hardly can wait to see your schematics and source if you would like to share.

masterx81:
I love the sound frequency proportional to the resistance! And seem have quite stable reading. Really interested!

kripton2035:
the good news is that inside the box everything is wired "bugstyle" on a perfboard... I will certainly make a good pcb with groundplanes...
and add one more digit to the display !

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