Home | Mack the Dog | MIDI Pedal Board | Model Train Photos | Doll House Photos Johnson Family Projects Site MIDI Pedal Board Home brew adaptation of a pipe-organ pedalboard to work with my MIDI setup. Rewiring of the pedal contacts. Previously there was a very bulky bundle of wires that had a several seperate wires for each pedal. In this case, I multiplexed it down to 12 wires so that I could interface it to a Cypress PSoC microcontroller. Close-up of the wiring as well as of the pedal contacts. Look for the copper tab on the end of each pedal. You can barely see the spring contacts against which the copper tab presses. The Cypress PSoC(tm) configured to scan the pedalboard and output MIDI messages. The pedalboard in place, ready to play.