Collidoscope pcb was designed by Ben Bengler
Licensed under Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)

Collidoscope pcb uses Tamir Emran's Teensy ++ pcb part based on an original design by Mark Gross.
Licensed under Creative Commons Attribution-ShareAlike 3.0 Unported (CC BY-SA 3.0)

http://creativecommons.org/licenses/by-sa/3.0//