I tried to download the original firmware source/makefile from sourceforge but it came as the c0ntrol software, I then poked around and got a copy from openmusiclabs, but it seems that was updated..On February 20, 2019, I purchased a beautiful blue Adafruit x0xb0x PCB but then the pandemic threw everything into question and I put the PCB away.
I would now like to build it as I have all the rares and most of the parts needed, but I would like to start with the basic firmware and later, upgrade.
Thank you