#include <LiquidCrystal_I2C.h> 
#include <Servo.h>
#define I2C_ADDR    0x27
#define LCD_COLUMS 20
#define LCD_LINES 4
#define btn1 2
#define door 3

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);
Servo myservo;

enum Status {
  Tutup,
  Wait1,
  Buka,
  Terbuka,
  Wait2
};

Status kondisi = Tutup;

void setup() {
  lcd.init(); 
  lcd.backlight();
  myservo.attach(5);
  pinMode(btn1, INPUT_PULLUP); 
  pinMode(door, INPUT_PULLUP);

}

void loop() {
 switch (kondisi) {
    case Tutup:
     lcd.setCursor(0, 0);
     lcd.print("...");

     if (!digitalRead(Btn1)) {
       kondisi = Wait1;   
       
      }
     break;
      
    case Wait1;

      lcd.setcursor(0, 0);
      lcd.print("Pintu Terbuka");
      myservo.write(180);
      kondisi = Buka;

      break;

    case Wait2:
     lcd.setCursor(0, 0);
     lcd.print("Pintu Tertutup");
     myservo.write(90);
     kondisi = Tutup;
     break;
  }
  }