Somepixel

example BiblioPixel protocol WS281x controller using PIC16F1454 microcontroller

control ~200 WS2812 LEDs (or equivalent) with a cheap USB 8-bit microcontroller

Copyright (C) 2015 Peter Lawrence

based on top of M-Stack USB driver stack by Alan Ott, Signal 11 Software

A open-source PIC16F1454 bootloader by the same author is:

https://code.google.com/p/pic16f1454-bootloader/