#include <Servo.h>

Servo doorServo;

const int buttonPin = 2;
int buttonState = 0;

void setup()
{
  pinMode(buttonPin, INPUT);
  doorServo.attach(9);

  // Door initially closed
  doorServo.write(0);

  Serial.begin(9600);
}

void loop()
{
  buttonState = digitalRead(buttonPin);

  if(buttonState == HIGH)
  {
    Serial.println("Door Opened");

    // Open Door
    doorServo.write(90);
    delay(3000);

    Serial.println("Door Closed");

    // Close Door
    doorServo.write(0);
    delay(1000);
  }
}