MIDI Piano Lighting is a DIY project, via, that lets you use MIDI to control lightbulbs in sync with a musical performance.
Here’s a demo of it in action:
While the video demos ‘scrolling’ mode, several options are available:
- CLASSIC – MIDI notes are mapped to bulbs Cn-Bn mapped to bulbs 1-12, intensity of bulbs is fully on, sustain pedal holds notes of same time, clears all bulbs when released.
- VELOCITY – same as Classic, but intensity of bulb is controlled by the velocity of the note played.
- SCROLLING (shown in video) – in this mode, bulbs are lit up sequentially as more notes are played, with intensity of the bulb based on velocity of the note. Releasing the sustain pedal clears the bulbs.
- AUTOMATIC – Slow moving algorithm that creates a changing visual display in random patterns.
Details are provided at the Instructable site.