#include <Wire.h>
#include <Keypad.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <ESP32Servo.h>
Servo myservo;
int buzzer = 35;


#define lebarlayar 128
#define tinggilayar 64

 Adafruit_SSD1306 oled(lebarlayar,tinggilayar,&Wire,-1);

char tombol[4][4]=
{
  {'1','2','3','A'},
  {'4','5','6','B'},
  {'7','8','9','C'},
  {'*','0','#','D'}
};
byte pinBaris[] = {15,2,4,16};
byte pinKolom[] = {26,25,33,32};

Keypad keypad = Keypad(makeKeymap(tombol),pinBaris,pinKolom,4,4);
char customKey;
int number = 0;
int password = 1133;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  if(!oled.begin(SSD1306_SWITCHCAPVCC,0x3C)){
    Serial.println(F("failed to start SSD1306 OLED"));
    while(1);
  }
delay(2000);
oled.clearDisplay();
oled.setTextSize(1);
oled.setTextColor(WHITE);
oled.setCursor(0,0);
oled.println("WELCOME");
delay(2000);
oled.display();

oled.clearDisplay();
myservo.attach(19);
pinMode(buzzer, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
   oled.setTextSize(1);
  oled.setTextColor(WHITE);
  oled.setCursor(0,10);
  oled.print("INSERT PASSWORD");
 customKey = keypad.getKey();
  switch (customKey) {
    case '0' ... '9':
      oled.setTextSize(1);
      oled.setTextColor(WHITE);
      oled.setCursor(0,20);
      number = number * 10 + (customKey - '0');
      oled.print(number);
      oled.display();
      oled.clearDisplay();
        break;

    case '#':
      if (number == password) {
       
       oled.setTextSize(1);
      oled.setTextColor(WHITE);
      oled.setCursor(0,20);
        oled.print("SUCCES");
        number = 0;
        myservo.write(180);
        delay(5000);
        oled.display();
        myservo.write(90);
        oled.clearDisplay();
        
      } else {
       
        oled.setCursor(0, 20);
          oled.setTextSize(1);
      oled.setTextColor(WHITE);
        oled.print("ACCES DENIED!");
        oled.display();
        digitalWrite(buzzer, HIGH);
        delay(5000);
        number = 0;
        oled.clearDisplay();
       
      }
      break;

    case '*':
      number = 0;
      oled.clearDisplay();
      break;
  }

 } // this speeds up the simulation