This project uses an Arduino Uno to build a burglar detection alarm system with a PIR sensor. The system triggers an alarm when motion is detected, signaling with an LED and a piezo buzzer. This code ...

PIR sensors are widely used for motion detection in various applications, from security systems to automatic lighting. Understanding how PIR sensors work and how to integrate them with Arduino opens ...

This project uses a PIR (Passive Infrared) sensor to detect motion and displays the status on an I2C Liquid Crystal Display (LCD). When motion is detected, a message is shown on the LCD and printed to ...

// PIR-Based Energy Conservation System const int pirPin = 2; // PIR motion sensor const int lightRelay = 3; // Relay for lights const int compRelay = 4; // Relay for computers const int buzzer = 7; / ...