#include <Servo.h> // Required library for servo control

const int PIR_PIN = 8;   // PIR sensor signal pin
const int SERVO_PIN = 2; // Servo motor signal pin
Servo myServo;           // Create servo object

void setup() {
  Serial.begin(9600);
  pinMode(PIR_PIN, INPUT);   // Set PIR as input
  myServo.attach(SERVO_PIN); // Connect servo to pin 9
  myServo.write(0);          // Initial position
  delay(5000);              // Warm-up time for PIR sensor (approx. 10-60s)
}

void loop() {
  int motionDetected = digitalRead(PIR_PIN); // Read sensor state

  if (motionDetected == HIGH) {
    Serial.println("gate closed ");

    myServo.write(90); 
    delay(1000);
    myServo.write(0);
    delay(1000);// Rotate to 90 degrees
    } 
  else {
    
    Serial.println("No motion.");
    myServo.write(0);   // Return to 0 degrees
  }
  delay(2000); // Small delay for stability
}