Dobrica Pavlinušić's random unstructured stuff
iCEBreaker: Revision 2
https://github.com/icebreaker-fpga/icebreaker

iCE40UP5K

interesting ice40 projects:

^ usb analyzer

https://github.com/smunaut/iua

^ usb audio device

part 1: https://youtu.be/4-JE2nZt0sk
part 2: https://youtu.be/UD2h8IuLXCQ

https://github.com/smunaut/ice40-playground/tree/wip-audio