Meet the Sisyphus Mini: a beautiful kinetic art piece that uses a robot to move a steel ball through the sand. The Sisbot can run continuously without making a whole lot of noise. The motors are controlled by a Raspberry Pi computer. Sisyphus Mini will have a usable sand field diameter between 9″ and 12″.
Sisyphus Mini runs on 12VDC. The mini computer used to build this plays path files like a music player plays an mp3 file.