Here is a simple general-purpose security alarm circuit built on the Arduino platform. It brings up an obtrusive alert signal when an intrusion/theft attempt is observed by its front-end sensor. In ...

The Reed Switch Module project demonstrates how to detect the presence of a magnetic field using a reed switch with an Arduino Mega. When a magnet is close to the reed switch, it closes the circuit, ...

This project integrates a reed switch with an Arduino Uno using interrupts to detect changes in the magnetic field. The Arduino Uno monitors the state of the reed switch and controls an LED based on ...