MIDI Interface 1 in 1 out based on Arduino MidiUSB (https://github.com/arduino-libraries/MIDIUSB) and Midi (https://github.com/FortySevenEffects/arduino_midi_library) libraries.
Works with iPad and ios native midi drivers (must patch MidiUSB power settings as instructed in the .ino file)
Currently tested on (Pro) micro, Leonardo platforms, but should also work on Due.
License: GPL V3 © 2016 Fabien (https://github.com/fab672000)