Whew! I think I've been working on this family of controllers for most of the year. (Well, on and off, with long breaks in-between.) Honestly I'm glad I didn't launch these earlier because the new printer has just upped the quality so much.
These are USB HID or USB MIDI controllers... I redesigned devices I've been building since 2020 based on over two years of lessons learned. (And a chip shortage thrown in for fun!)