Remember LED cubes? We sure do — they were all the ... They’ve each got room for 16 addressable WS2812 LEDs in 5 mm packages, with every possible bit of substrate removed to block the minimum ...

Ah, the 5mm LED. Once a popular choice ... and resetting the counters as appropriate. The PCB that houses the project is printed on directly by a flatbed inkjet printer, which [Ian] purchased ...