I'm working on a MIDI-controller based on an Arduino UNO[1] microcontroller development board.
When finished i may be doing a step by step how-to on a site like Insteructables, but that is still a few months away.

To-Do:

Updates:

Links:

  1. https://www.arduino.cc/en/Main/ArduinoBoardUno
  2. http://www.notesandvolts.com/2015/02/midi-and-arduino-build-midi-input.html
  3. http://www.notesandvolts.com/2015/03/midi-for-arduino-build-midi-output.html