Inside the ball there’s an Adafruit Feather ... space before sending its position to the computer. To send the click events, [Jacek] baked some mouse buttons into the keyboard’s firmware.

Evolution of computer mice from trackball to optical, translating hand movements into on-screen interactions with precision.

Kensington’s design shows a wireless trackball mouse with a large ball in the center that you can move to manipulate an ...

This variant on the computer mouse relegates cursor control to a ball manipulated by the fingertips or the thumb instead of using your hands and wrist to coordinate movement. At PCMag, we've ...