iPhone controlled 4x4x4 LED RGB Cube

Hello, This is my first project I've done, and it's a 4x4x4 RGB LED cube based off a Rainbowduino. It can be controlled by an iPhone using TouchOSC and its Processing library. The three sliders adjust the red, green, and blue levels.

http://www.youtube.com/watch?v=JXr-Jgzgigs

Any comments and suggestions are appreciated :) I'm hoping to make a music visualizer and notification system soon too.