LED cube

This is code for a LED cube, inspired by a LED cube I've seen at CCC and the SquareWave Dot cube.

Hardware:

• 6 32x32 hub75 panels, for example these.
• Adafruit ItsyBitsy M4.
• A power source, for example a USB power bank.
• Something to make it a cube, for example wood (you can remove the plastic frame and use the small screws that remain).
• Some wires and stuff to connect things internally.