There have been plenty of Z80 computer builds here on Hackaday, but what sets them apart is what you do with them. [Andrew] writes in with his Z80 single-board computer made from scratch, using the… ...

The Arduino comes pre-programmed with the Firmata sketch for PC Operation, which provides an interface to the Arduino hardware via a serial port for controlling the GPIO and peripherals.

[royboy] from the Arduino forum has recently made a post showing off his Arduino / PC ambient light system. The system is simple to wire up and easy to use, as long as your video is being sent from… ...

Build your very own custom computer mouse powered by Arduino, using 3D printed components together with a selection of buttons and controls ...

The controls are wired to an Arduino control board that receives button presses and sends serial commands to a PC running a python script.