PIR Sensor with Arduino Projects

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PIR Sensor with Arduino Projects

PIR  SENSOR : passive infrared sensor

A passive infrared sensor (PIR sensor) is an electronic sensor that measures infrared (IR) light radiating from objects in its field of view. They are most often used in PIR-based motion detectors. PIR sensors are commonly used in security alarms and automatic lighting applications.

PIR SENSOR

Wiring of PIR sensor with arduino uno

Pir Sensor wiring with Arduino uno

PIR SENSOR	ARDUINO
GND	GND
POWER	+5v
SIGNAL	3

BUZZER	Arduino
GND	GND
POWER	13

Code : 

#define pir 3

#define buzz 13

void setup()

{

  pinMode(pir,INPUT);

  Serial.begin(9600);

  pinMode(buzz,OUTPUT);

 

}

void loop()

{

  int value = digitalRead(pir);

  Serial.println(value);

  delay(600);

  if(value==1)

  {

    digitalWrite(buzz,HIGH);

  }

  else

  {

    digitalWrite(buzz,LOW);

  }

}