Their Cubes use a Seperate Arduino, and TLC5940 LED-drivers in TSOP housing. I would like to push the limits on my version of it, so i ordered the TLC5940 and Atmega328P in the smallest possible cases available. I would like to try BGA some day, but BGA requires more than dual layer PCB, so that’s impossible without professional PCB’s. The Atmel is 4mm² and the TLC5940 is 5mm².
Here’s some pictures of the milled PCB:
Some more pictures in the Gallery
There’s pictures of another PCB in the folder, an Infrared LED exposure device for Playing with a Laser printer.