#include <LiquidCrystal_I2C.h>
  LiquidCrystal_I2C lcd (0x27,16,2);
  const int button1 = A0;
  const int button2 = A1;
  const int relay1 = 2;
  const int relay2 = 3;
  int masuk = 0;
  int keluar= 0;
  int total = 0;
void setup() {
  // put your setup code here, to run once:
  pinMode(button1, INPUT_PULLUP);pinMode(button2, INPUT_PULLUP);
  pinMode(relay1,OUTPUT);pinMode(relay2, OUTPUT);

  lcd.begin(16,2);
  lcd.backlight();
  lcd.setCursor(0,1);
  lcd.print("PENGUNJUNG: ");
  delay(200);
  
}

void loop() 
  // put your main code here, to run repeatedly:
 {
  masuk = digitalRead(button1);
  keluar = digitalRead(button2);

  if(masuk == LOW){
    total++;
    delay(500);
  }
  if(keluar == LOW){
    total--;
    delay(500);
  }
  if(total<=0){
    digitalWrite(relay1, LOW);
    digitalWrite(relay2, LOW);
    lcd.setCursor(0,1);
    lcd.print("PENGUNJUNG:  ");
  }
  else if (total>0 && total<10){
    digitalWrite(relay1, HIGH);
    digitalWrite(relay2, LOW);
    lcd.setCursor(0,1);
    lcd.print("PENGUNJUNG:  ");
    lcd.setCursor(12,1);
    lcd.print(total);
    lcd.setCursor(13,1);
    lcd.print(" ");
  }
  else{
    digitalWrite(relay1, HIGH);
    digitalWrite(relay2, HIGH);
    lcd.setCursor(0,1);
    lcd.print("PENGUNJUNG:  ");
    lcd.setCursor(12,1);
    lcd.print(total);
  }
}