Control Servo Using PIR Sensor, Arduino

How to activate a servo motor with a PIR sensor

This was originally used for a candy dispenser, activated by movement

If you have any questions pls ask

1. Arduino UNO (I'm using the MEGA but there's no difference)

2. PIR Sensor

3. Servo motor

4. Bread Board

5. Wires

6. LED and Resistor (optional)

The PIR Sensor has three pins: GND(Ground), OUT(signal) and VCC(Voltage)

■ VCC to the Positive railings of the Bread board.

■ OUT pin to the Digital pin 2 of the Arduino board.

■ GND pin to the Negative railings of the Bread board.

The servo has 3 wires coming out of it: Signal(Orange), Voltage or VCC(Red in most cases) and Ground(Black or Brown)

■ Signal wire(Orange) to the Digital pin 9 in the Arduino board

■VCC wire(Red) to the Positive railings of the Bread board.

■ Ground wire(Brown)to the Negative railings of the Bread board.

To finish off:

■ Wire together the 5V power pin in the Arduino board with the Positives railings of the Beard board

■ Wire together the Ground power pin in the Arduino board with the Negative railings of the Beard board

If you want to add an LED:

■ Wire together the Digital pin 6 in the Arduino board with pin a-12 in the Beard board

■ Place the LED with the longer leg in pin h-12 and shorter leg in pin h-11 in the Beard board

■ Place the Resistor connecting pins e-12 and f-12 in the Beard board

■ Wire the Negative railing with pin f-11 in the Beard board

#include <Servo.h>

//if error stray /342 occurs, type this line yourself, it could be a unicode error

Servo myservo;

int led=6;

int pir=2;

void setup()

{

pinMode(pir,INPUT);

pinMode(led,OUTPUT);

myservo.attach(9);

myservo.write(60); //starting position of the servo motor

Serial.begin(9600);

}

void loop()

{

int val = digitalRead(pir);

Serial.println(val);

if(val==HIGH) {

digitalWrite(led,HIGH);

myservo.write(140);

delay(1000);

myservo.write(60);

digitalWrite(led,LOW);

delay(2000);

}

delay(100);

}

Just in case i attached the arduino file :)