There’s a million and one ways to play around with MIDI and an Arduino. It’s trivial to have a ‘duino spit out a scale to a MIDI keyboard, or even respond to SysEx messages to change a lighting or ...

Just another gizmo I've whipped up in my office of insanity. I expect most of you won't have any idea why you'd want to build one of these, so I'll try to explain up front. Suffice it to say, "I find ...