Earlier this year Evan Kale took his Arduino, 4 computer PC keyboards and some code, mixed them all together an came up with this crazy MIDI instrument. Yes it’s crazy, completely impractical… but it works.
Anyway, if you’re having a slow Monday morning and need some waking up / inspiration, then watch this:
Learn everything you need to know about MIDI here.
ArduinoMidiPS2 code can be downloaded here: https://github.com/evankale/ArduinoMidiPS2