#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 20, 4);
// #define LED 15

#define LED_BUILTIN 15

void setup() {
  // put your setup code here, to run once:
  pinMode(LED_BUILTIN, OUTPUT);
  // lcd.begin();
  lcd.init();
  // lcd.backlight();
  // Serial.begin(115200);
  // pinMode(LED, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  // delay(3000);
  digitalWrite(LED_BUILTIN, HIGH);
  lcd.clear();
  // lcd.setCursor(0, 0); 
  lcd.print("Lampu LED Hidup!");
  delay(1000); // this speeds up the simulation
  // digitalWrite(LED, LOW);
  // lcd.setCursor(0, 0); 
  // lcd.println("Lampu LED Mati!");
  digitalWrite(LED_BUILTIN, LOW);
  lcd.clear();
  // lcd.setCursor(0, 0); 
  lcd.print("Lampu LED Mati!");
  delay(1000);
}