Data and power signals flow around the cube via solder connections along the edges of the faces of the cube. Running the show is an ATmega328P, the same microcontroller you’d find in an Arduino Uno.

To rectify this, some time ago, [Mark Kriegsman] built an Arduino program that makes LEDs twinkle beautifully. The program is known as TwinkleFOX, and relies on the popular FastLED library for ...