#include <LiquidCrystal_I2C.h>

const int pinled = 7;
const int pinpb = 3;

LiquidCrystal_I2C lcd(0x27, 20, 4); 

void setup() {
  // put your setup code here, to run once:
  lcd.init();
  lcd.begin(20, 4);
  lcd.backlight();

  pinMode(pinled, OUTPUT);
  pinMode(pinpb, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  if (digitalRead(pinpb) == HIGH) { 
    digitalWrite(pinled, HIGH);
    delay(500);
    digitalWrite(pinled, LOW);
    delay(500);
    lcd.setCursor(0, 0);
    lcd.print("menyala");
    delay(1000);
  } else {
    digitalWrite(pinled, LOW);
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("modar");
    delay(1000);
  }
}