LushProjects created this nifty hat that sports “two 21×10 dot displays each made from 6 LED modules” — capable of displaying text, Invaders, and Pong. Videos after the jump.

I wanted to have the display respond to its environment. The system includes a microphone and amplifier which feeds in to one of the A/D ports on the AVR

Pong

Invaders (Scrolling Graphics)