#include <LCD_I2C.h>
LCD_I2C lcd(0x27, 16, 2);

int ldr = A1;
int nilai_ldr;
int led = 8;
void setup() {
  // put your setup code here, to run once:
  pinMode(led, OUTPUT);
  Serial.begin(9600);
  lcd.begin();
  lcd.backlight();
}

void loop() {
  // put your main code here, to run repeatedly:
  nilai_ldr = analogRead(ldr);
  Serial.print("Nilai LDR : ");
  Serial.println(nilai_ldr);
  delay(500);

  lcd.setCursor(0, 0);
  lcd.print("Nilai LDR = ");
  lcd.print(nilai_ldr);
  delay(500);

  if (nilai_ldr < 500) {
    digitalWrite(led, HIGH);
    lcd.setCursor(4, 1);
    lcd.print("LED NYALA ");
  } else {
    digitalWrite(led, LOW);
    lcd.setCursor(4, 1);
    lcd.print("LED MATI ");
}
}