He noticed that he could keep the pendulum moving at a pretty good tick if he triggered the magnetic coil every third pass, so he implemented an Arduino to keep count of passes and apply the ...

The pendulum is a neodymium magnet on the head of a bolt, dangling on a one foot aluminium chain. Below, a Hall Effect sensor rests atop an electromagnet — 1″ in diameter, with 6/8″ wire ...

A strong permanent magnet acts as a simple pendulum, swinging back and forth while hanging from strings. A copper plate underneath the magnet can be moved up to tune the eddy current damping. Swing ...

A magnetic mass hangs on the end of a swinging rod. A movable copper plate damps the oscillations. The rod is connected to a rotational motion sensor, which can transmit the data to a computer for ...

Self-identifying hammers are mounted to the frame with a quick change connector and their speed is electronically measured by means of a magnetic, non-contacting encoder. Additionally, a transparent ...