I’ve learned a bunch about making circuit boards at work recently, so I decided to re-do the ol’ strobe guitar tuner project from 3 or 4 years ago. The original still works… sort of. I have to power it from a 3x AA battery holder that’s clipped to the power terminals with alligator clips. It doesn’t tune the low E string properly for some reason. The input’s inflexible, and it’s hard to reprogram.
The hardware has been updated in the following ways: