SOFTWARE
The software was made using a serial communcation between Pure Data and Arduino.
Arduino code simply opens a serial port between the computer and the Arduino board. Then all the inputs that come from the board go to Pure Data which uses them to starts or stop the sounds.
The screenshot shows how the Pd patch looks like.
As you can se, in the middle of the image there are twelve squares. Those squares are like a switch. So when a MUBU is eating, the square concerning that food will be clicked and the sound started. When the food falls down, the square will be unclicked.
Coding with Pure Data was very helpful because it is designed to manage and work with sound, so making a patch for MUBU was easier than doing it with Processing or other programming languages.