The same holds true for a lot of microcontroller designs including [rgco’s] clever metal detector that uses very little other than an Arduino. The principle of operation is simple.

Hopefully this is easier to setup. I was able to control the robot over a distance of 350 meters. This was very cool and the metal detector detected some screws and wires. This was a lot of fun.

A new Instructables page has been created to make an eco-friendly DIY metal detector using an Arduino Mega just been combined with a 3.2 inch TFT LCD ...

Pin D2 receives a 0-5VDC pulse, generated with a push-button SW1 generated. Fast response time on zero-crossing of 1µs + Arduino digital processing cycles. Topology schematic available in 20250507 - ...

It is likely that many of us will at some time have experimented with motion detectors. Our Arduinos, Raspberry Pis, Beaglebones or whatever will have been hooked up to ultrasonic or PIR boards whi… ...

Use Arduino to handle sensor input and relay control. Pi runs a Python Flask server with a simple UI to toggle GPIO pins via serial commands sent to the Arduino. Use cron jobs on Linux to schedule ...