#include <Servo.h>
Servo servo1;
int pirState = LOW;   
void setup() {
pinMode(13, INPUT); 
servo1.attach(12);
}

void loop() {
 int val = digitalRead(13);  
  if (val == HIGH) {          
    servo1.write(90);
    if (pirState == LOW) {
    
      Serial.println("Motion detected!");
     
      pirState = HIGH;
    }
  } else {
    servo1.write(0);
    if (pirState == HIGH) {
   
      Serial.println("Motion ended!");
     
      pirState = LOW;
    }
  }

}