#include <Keypad.h>
#include <Servo.h>
#include <LiquidCrystal_I2C.h>
#define naik 90
#define turun 0
LiquidCrystal_I2C lcd(0x27,16,2);
const byte ROWS = 4;
const byte COLS = 4;
Servo Servo1;
char Keys[ROWS][COLS] = {
  {'1','2','3','A'}, 
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};

byte rowPins[ROWS] = {2, 3, 4, 5};
byte colPins[COLS] = {6, 7, 8, 9};
Keypad customKeypad = Keypad( makeKeymap(Keys), rowPins, colPins, ROWS, COLS);
char customKey; 
int number = 0;
int password = 1010;
int ledpin1 = 13;
int ledpin2 = 12;


void setup() {
  lcd.init ();
  lcd.setBacklight(HIGH);
  pinMode(ledpin1, OUTPUT);
  pinMode(ledpin2, OUTPUT);
  Servo1.attach(10);
  Servo1.write (turun);
  delay (3000);
}

void loop() { 
lcd.setCursor(0,0);
lcd.print("masukan kunci");
customKey = customKeypad.getKey();
switch(customKey){
case '0' ... '9':
lcd.setCursor(0,1);
number = number * 10 + (customKey - '0');
lcd.print(number);
break;
case '*':
if(number == password){ 
lcd.setCursor(0,1);
lcd.print("kunci terbuka ");
Servo1.write(naik);
digitalWrite(ledpin1, HIGH);
 delay(2000);
digitalWrite(ledpin2, LOW);
number = 0;
 lcd.clear();
 }
  else{
    Servo1.write(turun);
    digitalWrite(ledpin1,LOW);
    digitalWrite(ledpin2,HIGH);
    lcd.setCursor(0,1);
    lcd.print("kunci salah");
    delay(2000);
    number = 0;
    lcd.clear();
  }
  break;
case '#': 
 number = 0;
lcd.clear();
break;
}
}