via The Electronic Peasant

A classic control-voltage type keyboard and an Appendage ribbon controller would be the heart of the project, with many added features. A large quantity and variety of manual CV modulation controls, such as joysticks, potentiometers, and pressure sensors would also be included. The design would be rounded out with some manual triggers/gates and switches. Hopefully the comprehensive design of the SynthBend Controller will provide an exceptional playing experience.
The first step in the design of this project was to decide on the basic module layout and chassis configuration. A number of salvaged plastic cases with hinged lids, as shown below, were chosen to house the controls and electronics."