#include <LiquidCrystal_I2C.h>
#include <DallasTemperature.h>
#include <OneWire.h>
#define RED 12
#define BLUE 19
#define SUHU 23
OneWire oneWire(SUHU);
DallasTemperature sensors(&oneWire);
LiquidCrystal_I2C lcd(0x27, 16, 2);

void setup(){
  sensors.begin();
  pinMode(RED, OUTPUT);
  pinMode(BLUE, OUTPUT);
  lcd.init();
  lcd.backlight();
  digitalWrite(RED, HIGH);
  digitalWrite(BLUE, HIGH);
}

void loop(){
  sensors.requestTemperatures();
  float temperature = sensors.getTempCByIndex(0);
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print (temperature);

  if (temperature < 0){
    digitalWrite(BLUE, HIGH);
    digitalWrite(RED, LOW);
    lcd.setCursor(0, 1);
    lcd.print("BLUE : ON");
  }

  else if (temperature > 40){
    digitalWrite(RED, HIGH);
    digitalWrite(BLUE, LOW);
    lcd.setCursor(0, 1);
    lcd.print("RED : ON");
  }
}