PIR sensor Interface with Arduino

1const int PIR_Sensor = 2;     // the number of the PIR_Sensor pin
2const  int ledPin =  13;      // the number of the LED pin
3int Motion_State = 0;         //  variable for reading the Motion status
4
5void setup() {
6  pinMode(ledPin,  OUTPUT);    // initialize the LED pin as an output:
7  pinMode(PIR_Sensor, INPUT);  // initialize the PIR_Sensor pin as an input:
8}
9
10void loop() {
11  
12  Motion_State = digitalRead(PIR_Sensor);  // read the state of the PIR_Sensor value:
13  if (Motion_State == HIGH) {   // check if the Motion_State is High.
14  digitalWrite(ledPin,  HIGH); // turn LED on:
15  delay(10000);
16  } else {
17    
18    digitalWrite(ledPin,  LOW);  // turn LED off:
19  }
20}