DIY Projects
Published © CC BY

Arduino with PIR Motion Sensor

In this video I will so you to how to make PIR motion sensor with LED

BeginnerShowcase (no instructions)1 hour148,340
Arduino with PIR Motion Sensor

Things used in this project

Hardware components

Arduino UNO
Arduino UNO
×1
PIR Motion Sensor (generic)
PIR Motion Sensor (generic)
×1
LED (generic)
LED (generic)
×1
Jumper wires (generic)
Jumper wires (generic)
×7
USB-A to Micro-USB Cable
USB-A to Micro-USB Cable
×1
Solderless Breadboard Half Size
Solderless Breadboard Half Size
×1

Software apps and online services

Arduino IDE
Arduino IDE

Story

Read more

Schematics

PIR Motion sensor with Led

Code

Arduino code

C/C++
int led = 13;                // the pin that the LED is atteched to
int sensor = 2;              // the pin that the sensor is atteched to
int state = LOW;             // by default, no motion detected
int val = 0;                 // variable to store the sensor status (value)

void setup() {
  pinMode(led, OUTPUT);      // initalize LED as an output
  pinMode(sensor, INPUT);    // initialize sensor as an input
  Serial.begin(9600);        // initialize serial
}

void loop(){
  val = digitalRead(sensor);   // read sensor value
  if (val == HIGH) {           // check if the sensor is HIGH
    digitalWrite(led, HIGH);   // turn LED ON
    delay(500);                // delay 100 milliseconds 
    
    if (state == LOW) {
      Serial.println("Motion detected!"); 
      state = HIGH;       // update variable state to HIGH
    }
  } 
  else {
      digitalWrite(led, LOW); // turn LED OFF
      delay(500);             // delay 200 milliseconds 
      
      if (state == HIGH){
        Serial.println("Motion stopped!");
        state = LOW;       // update variable state to LOW
    }
  }
}

Credits

DIY Projects
11 projects • 21 followers
Student
Contact

Comments

Please log in or sign up to comment.

Related channels and tags
  • Robotics
  • Robotics