The cube seems solid enough as a result, and even when handled the LED boards don’t really flop around too much. See the cube in action in the video below.

LED matrix cube project showcases customizable images using Raspberry Pi. Tutorial suggests costly Adafruit parts, but cheaper alternatives are available from AliExpress. Explore more Raspberry Pi ...

You can make something very big, or something very small. [DIY GUY Chris] has done the latter, producing a tiny LED cube that he says is the world’s smallest.