Adafruit neopixel quarter ring 15 addressable rgb leds adafruit 1768 p the adafruit 15 neopixel quarter ring lets you address every single one of the 15 leds and set its 24 bit rgb value the result is 158mm 6 2in in diameter and is the height of bling these seemingly simple gadgets have triggered an amazing array of creative projects from watches and compasses to steampunk goggles and more each ring has solder pads for 5v dc and gnd plus data in and data out simply feed the data out