NeoPixel Rainbow Coin for Wearable Project - Pack of 4 (WS2812B Smart RGB LED)

This is the easiest way possible to add tiny and ultra bright RGB LED to your wearable project.
The LEDs are chainable by connecting the output of one coin into the input of another.
Power the whole thing with 5VDC ( 3.5V ~ 5.5V works)
Each pixel of the three primary color can archive 256 brightness display, completed 16,777,216 color display.
This pixel has full 24-bit color ability by the built-in controller chip. Since the LED is so bright and compact, you need less current/power/space to get the effects you want.

Libraries:
for Arduino - http://nulsom.com/source/NS_Rainbow.zip
for ATmega328 - http://www.nulsom.com/source/NS_Rainbow_for_ATmega328P.zip
for ATmega128 - http://www.nulsom.com/source/NS_Rainbow_for_ATmega128.zip
for ATmega8 - http://www.nulsom.com/source/NS_Rainbow_for_ATmega8A.zip