instrument-a-day 28: wind up time code

(video link)

Turning the click-clack of an old wind up motor into MIDI time code to control the playback of a recording. (I’ll try it on with a video next!)

(Inside the box, the wind up motor has a flapping arm that interrupts a light beam. Each clack of the motor generates a MIDI SPP command which tells the computer how far / fast to move through the recording.)