now the fun begins. I bought, soldered and assembled an Adafruit Untztrument. Once finished, it more or less works plug-and-play-like with Linux/Sonic Pi. The examples available available contain a simple midi pad and a nice step sequencer (first thing to study for me):
Opens up a whole lot of new options but requires some programming. Does anyone have experience and can point me into the right direction for good tutorials concerning Arduino/Midi programming (first thing to do: find out how to program toggle buttons and something like a control button to switch one row into function buttons)?