By the way, we’ve covered a PID library for Arduino before. While this post talks about temperature, PID control is used for everything from flight control to levitation.

A PID algorithm measures the distance to the ball and raises or lowers a beam to try to get the ball to the center. Servos like this usually operate in radio control vehicles and they are very ...

The project is powered by an Arduino Uno connected to four steppers motors, drivers and a linkage system to keep the ball in motion. Some words about how this PID controlled ball and plate works: ...

Francesco Tacchini, a Royal College of Art grad student, and Julinka Ebhardt and Will Yates-Johnson of Design Products have created a very creepy and cool black floating ball project that is ...

Why this hasn't been done before is a mystery to me. This little hack project by Kellbot of NYCResistor takes a rolling ball, an optical mouse, a gutted PS2 controller, and some Arduino hacking ...