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 shield’s specifications include a 3.97” display with a resolution of 480×800 RGB, 16.7M color, five points and gestures touch mode, an I2C interface, a BMI270 IMU sensor, and an ...

Watch this video on YouTube. “Motor voltage: 24 VDC, 38 VDC (E-type). In my case, I used 12VDC power supply to the motor because this voltage level is compatible with L293D Motor Arduino Shield.

These range from building a DCC system for about $45 (see below) to a crossing signal. There are actually quite a few basic Arduino videos on the channel, although most of them are aimed at beginners.

OMC's H19 fiber-optic shield has been adapted as a stackable add-on for the Arduino Uno. It’s designed to simplify the integration of fiber-optic data links into microprocessor-based platforms.