Defcon 21 Hats
If you were at Defcon 21, you probably saw us walking around with our LED hats on. The LEDs were the 2811 model found on Adafruit, cut into five 32 LED strips and soldered together. Sam coded the Arduino to push an LED lightshow and VU meter, which could be switched via a button attached the Arduino.
Code:
WS2811hat.ino