#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
#define led1 13
#define led2 12
#define led3 11
#define button1 10

void setup() {
  lcd.init();
  lcd. backlight();
  pinMode (led1, OUTPUT);
  pinMode (led2, OUTPUT);
  pinMode (led3, OUTPUT);
  pinMode (button1, INPUT_PULLUP); 

  lcd.setCursor (0,0); lcd.print ("MAULANA AL ZIKRI");
  lcd.setCursor (0,1); lcd.print ("XI.1 TOI");
  delay(1000);
  lcd.clear();

  for (int i=1; i<11; i++){
    lcd.setCursor (0,0);lcd.print ("LED KEDIP");
    lcd.setCursor (0,1);lcd.print (i);
    digitalWrite (led1, HIGH);
    digitalWrite (led2, LOW);
    delay(500);
    digitalWrite (led2, HIGH);
    digitalWrite (led1, LOW);
    delay(500);
    
  }
  digitalWrite (led2, LOW); 
  digitalWrite (led1, LOW);

lcd.setCursor (0,0); lcd.print ("TEKAN          ");
lcd.setCursor (0,1); lcd.print ("TOMBOL");
delay(1000);

}
void loop(){
  if(digitalRead (button1)==LOW){
    digitalWrite (led3, HIGH);
    lcd.setCursor (0,0);lcd.print ("TOMBOL AKTIF    ");
    lcd.setCursor (0,1);lcd.print ("LED ON          ");
  }
  else{
    digitalWrite (led3, LOW);
    lcd.setCursor (0,0);lcd.print ("TOMBOL NON AKTIF");
    lcd.setCursor (0,1);lcd.print ("LED OFF");
  }
}