This is a pretty cool use of an Arduino.
This costume uses digitally addressable LED strips hooked up to an Arduino microcontroller. It is responsive to sound and has 2 potentiometers and a button in the back of one of the ears for control and a microphone hidden in the front. It has 12 modes and 372 LEDs (124 chips with 3 each).
This will be the on-line binder for TEJ3/4MI