He’s using an Arduino Mega to drive the 7x7x7 cube ... straightened by stretching the wire. The 5mm Blue LED’s are positioned 30mm apart, with the anodes being attached to the verticals ...

The Arduino Wire library is a core aspect of Arduino's integrated development environment, or IDE, and is a must-have if ...

We like the construction technique that he used; taking perf-board and soldering the circuit and using stripped wire to interface with the pin sockets on the Arduino ... two IR LEDs are having.