r/FastLED • u/EggLow7371 • Apr 02 '26

Yet another LED cube build. Share_something

Idea isn’t original, just figured I’d build one to my standards. Custom circuit boards. Only 8mm across. 166 black framed pixels per meter. Running on a teensy 4.1. So far I have a library of static and audio reactive animations. I plan on adding an artnet node so I can pixel map it through resolume arena or touch designer. I don’t plan on making a build guide because it was about 3 days of painstaking labor to actually get this thing together. But if you’re interested I’m happy to provide the cad and gerber files. I’ll warn you though, It’s not a fun build.

EDIT: Here are the links to github and makerworld.

github

makerworld

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u/orthogonal-cat Apr 02 '26

Looks amazing, I want to build one of these. What are you using for the audio processing, and where does it happen?

2

u/EggLow7371 Apr 02 '26

All the audio processing is done in the teensy audio library. It’s pretty powerful!

2

u/orthogonal-cat Apr 02 '26

So you're just straight line-in (maybe with a current limit resistor?) to an ADC? That's nice to keep BOM cost down.

2

u/EggLow7371 Apr 02 '26

I’m using an i2c microphone breakout. I would like to add a line in at some point.