This is a velocity sensitive MIDI isomorphic keyboard. 192 total keys. The project came out of Louisville Soundbuilders, a fortnightly meeting of circuitbenders, synth engineers and experimental musicians. After seeing a couple of my failed variations of a single-bus isomorphic keyboard, Tim was intrigued enough to design one even better. He designed multiple PCBs that sandwich together with multiple switch types for velocity sensitive keypresses.
More development on the way! We're working on molds/methods for making hexagonal keycaps. And I'm working on an Arduino-based controller as an alternative to the midibox controller Tim has working already.
Watch the progress at http://soundbuilders.lvl1.org