Sure, the physical build itself looks great, but it’s what [Michael] did with the firmware that impresses us the most. He’s using an Arduino Mega to drive the 7x7x7 cube and manages to … ...

The mod works using a MAX7219 chip and Arduino Uno ATmega328 board, which control the two 8×8 LED matrixes making up the eyes. Each matrix is wired up to the MAX2719 chip–expect a lot of cables ...

Cree has crammed up to 2,250 lm capability into a 5x5mm LED – achieved at 19W. The LED is called XHP50, the first in a family of XHP lighting LEDs. “At its maximum current, the XHP50 provides twice ...