[Alan] has been working on driving this WS2811 LED module with an AVR microcontroller ... to drive one of these pixels with a 16MHz AVR chip. They use single-wire communications at 800 kHz ...

[Leo] looked at the WS2811 LED driver, but found that the low drive ... [Leo] solved both problems by using two of the three PWM channels on the chip in concert — one to control the current ...