Illuminatrix is a project we've put together over the last few months for this years Burning Man festival. Its a 2D array of 16x16 ping pong balls, each of which contains an RGB LED that can be coloured any colour of the rainbow at any time. It will be displayed in the entrance to the More Carrot theme camp and to give it a bit of a twist we've decided to make it possible for everyone to contribute to the animations we'll display on it.