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

#define DS18B20_OneWire 2

OneWire oneWire(DS18B20_OneWire);
DallasTemperature sensortemp(&oneWire);
LiquidCrystal_I2C lcd(0x27, 16, 2);

float temp;

void setup() {
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("A Temperatura e");
  sensortemp.begin();
}

void loop() {
  sensortemp.requestTemperatures();
  temp = sensortemp.getTempCByIndex(0);
  lcd.setCursor(0, 1);
  lcd.print(temp);
  lcd.print(" C");
}