Software Changes

A project log for Bench Power Supply

Designing an open source, modular bench power supply to rule them all.

The Big OneThe Big One 08/30/2019 at 22:254 Comments

In case anyone else has made one of these, I have recently made some software changes.  The biggest new feature is that calibration is supported directly from the power supply - no connection to a computer needed.  The reason for this is that I have had nothing but problems with the RawHID Python support on Linux and OSX; setting it up was nearly impossible, and if you did manage to get it installed (with custom compiled code) it would just segfault when you try writing stuff.  After many hours of debugging it, I gave up.

In addition to adding calibration, I did some code cleanup, updated the code to use my latest build scripts and toolchain, and fixed some minor bugs that I had never bothered fixing before.

The latest code is on my github page:


dragomirflorinserban wrote 11/27/2021 at 10:29 point

Hi, i've made you power suplpy design and i can't program it. In this link I cannot find the AVR files. Please help me with the source codes for programming this power supply. Thanks.

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The Big One wrote 11/27/2021 at 14:30 point

The AVR source code is at


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The Big One wrote 09/02/2019 at 17:26 point

The .zip file is still in the git repo: (This is rev 1.1... I have not ever made this one myself, but it has only a few changes from the 1.0 that I have - fixes to errors I had made).

  Are you sure? yes | no wrote 09/02/2019 at 12:25 point

Thanks, I still have the components to build one (Wanted to do this years ago, but the PCB's never arrived and I had a few international moves...)

Do you have the PCB files still out there somewhere?

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