Multi Point Calibration Working

A project log for Bench Power Supply

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

The Big OneThe Big One 06/09/2015 at 16:560 Comments

Over the weekend I have implemented multi point calibration. I currently use 8 calibration points, which seems to work just fine. I use linear interpolation to get calibration values between the calibration points. Testing shows that things are working quite well. Current limiting is working, and accurate down to less than 20mA (I can even plug an LED directly into the power supply outputs without it blowing up!)

I also added the ability to set startup voltage / current limiting on a per-channel basis. This is configured via the calibration script (run on the computer, talking to the power supply over USB Raw HID).

I will post a demo video when I get the chance, although that may not be for a few days given my workload right now...