#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define ONE_WIRE_BUS 3 
#define led 2
#define Buzzer 4

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup() {
  // put your setup code here, to run once:
  sensors.begin();
  pinMode(led, OUTPUT);
  pinMode(Buzzer, OUTPUT);

  lcd.init();
  lcd.backlight();
  lcd.begin(16, 2);
  lcd.clear();


}

void loop() {
  // put your main code here, to run repeatedly:
  sensors.requestTemperatures();
  float suhu = sensors.getTempCByIndex(0);

  lcd.setCursor(0,0);
  lcd.print("Suhu:");
  lcd.print(suhu);
  lcd.print("C  ");

  delay(1000);

  if (suhu > 40) {
    digitalWrite(led, 1);
    tone(Buzzer, 1000);
  } else {
    digitalWrite(led, 0);
    noTone(Buzzer);

  }

}