I decided to elaborate on my “Matrix” text rain and hook up some Arduino control to it.
I programmed the Arduino to communicate with my Powerbook using a 9600bps signal. The Arduino was hooked up to a breadboard with 3 sensors; 2 potentiometers and a photocell. I then programmed my text rain to read the 9600bps serial connection with the Arduino and used the variables from the 3 sensors to manipulate the color. The variables are passes from the Arduino to Processing in a 3 byte digital format. Below you can see the result.
Image of the Arduino set up: