Tiny LED Cube Packs Six Meters Of Madness

Recently we’ve been blessed with a bevy of beautiful, animated RGB cubes but none hit quite this intersection of size and function. The key ingredient here is tiny but affordable RGB LEDs which measure 1mm on a side. But LEDs this small dwarf even the otherwise minuscule “2020” package WS2812’s and APA102s of the world. Pushing his layout capabilities to the max [Freddie] squeezed each package together into a grid with elements separated by less than 1mm, resulting in a 64 LED panel that is only 16mm x 16mm panel (with test points and controller mounted to the back). Each of these four-layer PCBs that makes up the completed cube contains an astonishing 950mm of tracking, meaning the entire cube has nearly six meters of traces!