#include <LiquidCrystal_I2C.h>

#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4

LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

int merah = 9;

void setup() {
  // Init
  lcd.init();
  lcd.backlight();

  pinMode(merah, OUTPUT);
}


void loop() {
  digitalWrite(merah, HIGH);
  
  if (merah,HIGH){
    lcd.setCursor(3, 0);
    lcd.print("lampu merah");
    lcd.setCursor(4, 1);
    lcd.print("menyala");
  }

  delay(3000);

  digitalWrite(merah, LOW);
  
  if (merah,HIGH){
    lcd.clear();
    lcd.setCursor(3, 0);
    lcd.print("lampu merah");
    lcd.setCursor(6, 1);
    lcd.print("mati");
  }

  delay(3000);

}