#include <LiquidCrystal_I2C.h>

#define LDR_PIN 2

LiquidCrystal_I2C lcd (0x27, 20, 4);

const int LED = 8;

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

void loop() {
  // put your main code here, to run repeatedly:
lcd.setCursor(2, 0);
lcd.print("Ruang:");
if (digitalRead(LDR_PIN)==LOW){
  lcd.print("terang!");
  digitalWrite(LED, LOW);
}else{
  lcd.print("gelap!");
  digitalWrite(LED, HIGH);
}
delay(100);
}