5x5x5 RGB LED Cube Spectrum Analyser

I’ve often pondered building an LED cube. With simple single-colour LEDs, it could be a great way to practice more sculptural soldering or a great project to learn the principles of Charlieplexing to control individual LEDs. I can’t say I’ve ever got around to it as a project though, perhaps I need this ready-built 5x5x5 RGB LED Cube Spectrum Analyser.

On the product page, this LED cube looks fantastic, but when you watch the example video and see the 11 different animated patterns this project really springs to life. Powered via a (supplied) USB-C cable the LED cube also has a microphone on board with an automatic gain control circuit that allows it to react to sound or music. As well as switching patterns there are 3 variants of spectrum analysis mode and you can configure the brightness and the speed of the selected pattern.

Build wise everything is neatly soldered with each layer of LEDs sitting on its own custom PCB frame. Many DIY LED cubes are made “point to point” using the LED leads to sculpt the form, but this looks inherently stronger and neater. We like that the PCB adds rigidity but doesn’t bulk out the design too much allowing the glorious lighting effects to pass through the structure. Would be a great addition to any Hi-Fi!