[Isaac] sent in his mashup build of a LED cube combined with a graphic EQ meter. The build is fairly simple and from the video we can tell that his build would be a great installation in a dubstep venue. While it’s not the 9x9x9 cube possible with some judicious coding we think it’s a very fitting display for the intended purpose.
Unlike purely analog audio visualizations using resistor and capacitor networks, the MSGEQ7 is a 7-band graphic equalizer IC that requires basically no support circuitry. The cube is powered from a few shift registers and takes up three pins on his Arduino.
Even with freaking enormous LED cubes, the resolution is still too low to do much of anything outside a game of Snake or Pong. Volumetric displays, while offering higher potential resolution, rely on a mechanism to spin the display around at a very high speed. [Issac]‘s build gets around that limitation by only needing a few LEDs every band of his EQ. It’s a very nice build that gives a purpose to all the LED cubes out there.