Realizing this, [Josh] wrote a simple demo program to drive over 1000 NeoPixels – an 11 meter long strip – using 1K of RAM on an Arduino.

So he thought of experimenting with those, and built a ‘Binoctular’ LED clock which uses the Neopixel rings as 7 segment displays. Each digit is made using one pair of Neopixel rings, stacked ...

Basically any "Arduino compatible" that runs an 8-bit AVR with an 8-16MHz clock will work. Additionally, the Arduino Due and Teensy boards are compatible with the Neopixel lin.