Tim Lukasik made an awesome LED top hat.
The hat was made to wear to Above & Beyond’s Common Ground tour. Tim used 722 neopixels glued onto a thin foam backing which was then attached to a top hat. A Teensy 3.2 and a battery pack for power were wired into it. He programmed the LEDs to display 13 different designs featuring the band’s iconic event logos that rotate in order.
The code for the project has been published on GitHub.