This is an overview of the build process of the device. I will explain the electronics in detail in follow up videos.
Get the source code for the microcontroller and a stripped MIDI code version from my hompage http://electro.bitluni.net/midi
You have to excuse the low video quality. I didn't have the HD-camcorder yet when I started the project half year ago.
Music:
CSoul - Dark Helical Circle
http://ccmixter.org/files/CSoul/33614