Inspired by a prank tweet, [Sam Ettinger] endeavored to create an SMD seven-segment ... is a single 0201 LED. Six I/O lines and three resistors are required to operate each module.

[Alan] has been working on driving this WS2811 LED module with an AVR microcontroller. It may look like a standard six-pin RGB LED but it actually contains both an LED module and a microcontroller ...