Dr_Speed completed the GEMMA + NeoPixel ring pendant project!
Gemma board, Neopixel ring and LiPo battery for animated necklace pendant. Runs for hours on this battery, very bright. Only 3 wires to solder to get the hardware going. A bit of work to get this cross compiling on OSX, you have to do a bit of monkeying around to get the IDE going with the Gemma and you need to replace the ld.exe to get the sketch/library to work.
The Gemma and NeoPixel ring are from Adafruit and LiPo battery and charger (not shown) are from Sparkfun.