#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);

int buzz = 5;
int ldr =A1;


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

  pinMode(buzz, OUTPUT);
  pinMode(ldr, INPUT);

  lcd.setCursor(0,0);
  lcd.print("Nilai LDR:");

}

void loop() {
  int nilaiLdr = analogRead(ldr);
  lcd.setCursor(0,1);
  lcd.print(nilaiLdr);
  delay(500);

  if(nilaiLdr < 5000){
    tone(buzz,1000);
  }else{
    noTone(buzz);
  }

}