#include <Servo.h>

#define PIR_PIN 6 // Pin connected to the PIR sensor
#define SERVO_PIN 3 // Pin connected to the servo motor

Servo servo; // Create a servo object to control the servo motor
int angle = 0; // Initial angle for the servo

void setup() {
  pinMode(PIR_PIN, INPUT); // Set the PIR pin as input
  servo.attach(SERVO_PIN); // Attach the servo to its pin
  servo.write(angle); // Set the initial position of the servo
  Serial.begin(9600); // Start serial communication for debugging
}

void loop() {
  int motion = digitalRead(PIR_PIN); // Read the PIR sensor
  
  if (motion == HIGH) { // If motion is detected
    Serial.println("Motion detected!");
    servo.write(180); // Rotate the servo to 180 degrees
    delay(1000); // Wait for the servo to reach its position
    while(digitalRead(PIR_PIN) == HIGH) {} // Wait until motion stops
    servo.write(0); // Rotate the servo back to 0 degrees
  }
}