Grey Box
The Grey Box is a animatronic controller which contained parts from the Pianocorder with some modification from Creative Engineering. It as suggested uses
Pianocorder Data Format as a input to then control a Rock Afire Explosion.
I/O
2x Data input (RCA Jack I presume)
Character output connector (Centronics Connector)
Hardware Breakdown
6x Pianocorder Driver Boards
2x Pianocorder Playback Boards