#include <LiquidCrystal_I2C.h>
#include <TM1637Display.h>
#include <Servo.h>

int pot1 =A0;
int pot2 =A1;
int pot3=A2;
int pot4 =A3;

Servo servo1;
Servo servo2;

LiquidCrystal_I2C lcd(0x27, 16, 2);

int data= 3;
int clock = 2;

TM1637Display display(clock, data);

int secret[4]={1,2,3,4};

void setup() {

  lcd.begin(16,2);
  lcd.backlight();
  lcd.setCursor(0,0);
  lcd.print("Enter code: ");

  servo1.attach(5);
  servo2.attach(6);
  closeDoors();

  display.setBrightness(0); 
}

void loop() {
  // put your main code here, to run repeatedly:
       int digit1 = map(analogRead(pot1), 0, 1023, 0, 9);
       int digit2 = map(analogRead(pot2), 0, 1023, 0, 9);
       int digit3 = map(analogRead(pot3), 0, 1023, 0, 9);
       int digit4 = map(analogRead(pot4), 0, 1023, 0, 9);

       int code = digit1*1000+ digit2*100+digit3*10+digit4*1;

      display.showNumberDec(code);

      if(digit1==secret[0] && 
        digit2==secret[1]  &&
        digit3==secret[2]  &&
        digit4==secret[3])
        {
          lcd.setCursor(0,0);
          lcd.print("Right code!!");
          delay(2000);
          lcd.setCursor(0,1);
          lcd.print("Opening doors!!    ");
          openDoors();
       }
       else{
          lcd.setCursor(0,0);
          lcd.print("Wrong code!!");
          lcd.setCursor(0,1);
          lcd.print("                  ");
          closeDoors();
       }




}

void closeDoors(){
  servo1.write(180);
  servo2.write(0);
}


void openDoors(){
  servo1.write(90);
  servo2.write(90);
}