He reckons it cost him about $5 to build each of his cheap USB MIDI adapters which receive notes ... The interesting part is his use of a 32.15 kbps baud rate even though the MIDI specification ...

module pins(){ for (a=[2.54:2.54:15.24]){ translate([0 ... and simply build my own USB to serial adapter that uses pogo pins instead of pin headers. This actually wouldn’t be that much work ...