scratch pad update 3

3rd update of the harddrive midi scratch pad... Parts list so far: stripped hard drive, IR encoder from a ball mouse, 4 nuts as buttons, potentiometer knob, a pic 16f88, and a bunch of resistors... I wish I could find a linear fader. The IR quadrature encoder is pulled out of an old ball mouse. There are actually two IR transmitter/receiver pairs in a quadrature. Some details about that part can be found here: The encoder wheel is just printed on tra