Her original sketch was a canvas on which you could draw multi-colored ellipses using a mouse. The color, opacity, and audio was determined by the mouse pointer's coordinates and the speed of motion. We modified this sketch to use an accelerometer as a controller, with changes in motion along its x-, y-, and z-axis controlling these same attributes.
We mounted the accelerometer (with Arduino) in a semi-transparent acrylic box, along with a multi-color LED that we programmed to match the color on the canvas. The movements were very fluid; however, the LED proved to be unable to represent the entire color gamut of a computer monitor. Nonetheless, the glowing box created an interesting emotional feeling as its true contents remained hidden from view.