It's a wooden box with two potentiometers and a lcd display running arduino with ethernet shield and talking OSC.
The box can be used to interact virtually to any appliance that speaks OSC. It could for example - control the pong paddles or be used to fine tune the music. I used it at Databending to calibrate the other instalation here.
I used this) tutorial to connect the LCD. It is easier to solder some of the stuff, so I learned. However, I have build the box big enough to host a breadboard.
To enable OSC, I used Recotana's OSC Library
The part I spent most time with, was actually writing a menu code for the arduino's LCD and the buttons and potentiometers (using one potentiometer for left-right and two buttons for ok and cancel).