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 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 ...

const int pirPin2 = 5; // Digital pin connected to the second PIR sensor int pirState1 = digitalRead(pirPin1); // Read the state of the first sensor int pirState2 = digitalRead(pirPin2); // Read the ...

// 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; / ...