The Processing GUI sends a character, depending on which button you press, through serial to the Arduino program. 'F' for Fur Elise and 'J' for Jingle bells. The "songs", if we can call them that, are ...

// divided by the note type. //e.g. quarter note = 1000 / 4, eighth note = 1000/8, etc.

Now [Kevin] claims he built this robot for his 3-year-old son but we know he just used that as an excuse to spend way too much time in his workshop. The robot is a roundup of all the interesting ...