To send the click events, [Jacek] baked some mouse buttons into the keyboard’s firmware. Among the other Feather sensors is a PDM MEMS microphone, so detecting taps on the ball and translating ...

Explore the intricate design of a three-dimensional wooden labyrinth as the ball navigates its challenging twists and turns. This engaging activity showcases the combination of logic, precision, and ...

But we here at Hackaday don’t judge based on alternate input lifestyles, and we quite like this billiard ball trackball mouse. A trackball aficionado, [Adam Haile] spotted a billiard ball ...