Datasheet

Particle/Spark NeoPixel Ring Kit
Previously mentioned on the “Rings” page, but for
posterity: this 24-pixel RGB ring (http://adafru.it/2268) is
specifically designed for the Particle (formerly
Spark) Photon development board.
© Adafruit Industries https://learn.adafruit.com/adafruit-neopixel-uberguide Page 22 of 68