Simple PIR motion sensor detector example

Simple Arduino example to print out PIR (pyroelectric infrared) values using a motion sensor director.

Components

• • 1 x PIR motion sensor detector

  • 1 x Arduino Uno

  • 1 x breadboard

  • female to male jumper wires

  • jumper wires

Setup

Arduino sketch

Inspect Serial monitor (9600) for PIR readings.

/**

 * Prints out PIR values on 9600.

 * Connect OUT of PIR to A0, GND to GND, VCC to 5V.

 **/

int pirPin = A0;  //define a pin for Photo resistor

void setup()

{

    Serial.begin(9600);  //Begin serial communcation

    pinMode(pirPin, INPUT);

}

void loop()

{

    Serial.println(analogRead(pirPin)); //Write the value of the PIR to the serial monitor.

    delay(10); //short delay 

}