/challenges-projects/design-challenges/hats-off/b/blog/posts/gemma-neopixel-punk-collarwww.youtube.com/watch Get your cybergoth on with five color-changing NeoPixels studded onto a leather collar. The tiny GEMMA microcontroller can display endless animations on this fun funky accessory that's easy to make with a little soldering! Le...en-USTelligent Community 12