Siren Augmented Reality Synth. The player sees an interface overlayed on top of a video feed from a camera on the mask. The player holds colored lights in his hands which the software tracks according to color, thereby giving the player control of the melody generating synthesizer.

Built with an Arduino, Pure Data, and a mini computer strapped to the player's back.

I built it a couple years ago and considered it a mixed success.... but the kids love it!