“The Newtons pendulum is a device that demonstrates conservation of momentum and energy. A typical Newton’s cradle consists of a series of identically sized metal balls suspended in a metal frame so that they are just touching each other at rest.
Instead of buliding such device, I thought to build an idealized 5-LED-ball Newtons cradle desk-toy using a microcontroller. The strikes between balls is simulated by two micro servo motors.
I have included a potenciometer to adjust the frequency of the movement and a button to switch between the two run modes availables.”