It has an Arduino i i/o board inside, which controls the servo-motors that position an electromagnet along the X and Y axis corresponding the mouse position.

For humans, connecting to computers via a mouse and keyboard has long been cheap and easy. For sensors, not so much. Now an inexpensive physical computer called the Arduino is changing all that ...

With the Arduino Leonardo, everyone's favorite hackable microcontroller turned a new page. Now it's time to bring that simplified design and slightly expanded feature set to the rest of the family ...