Pixelblaze Volumetric Cube
Firework nova (now on the pattern site!)
Thread on the build
This is a volumetric LED cube made up of 64 x 8 pixel strings, run from a Pixelblaze V3 with 8 x 8 channel output expanders (for 64 outputs total), 512 LEDs in all, measuring about 2ft per side.
3D printed clips hold the LEDs in position with the wire, and provide some diffusion. The LED strings hang from a panel which also houses the electronics.
A Sensor Expansion board provides the sound and music reactivity with 32 band spectrum analysis. The pattern shown is spectromatrix playing with Sacramental by Joseph Hencke.