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

// Data wire is connected to pin 2 on the Arduino
#define ONE_WIRE_BUS 2

// Setup a oneWire instance to communicate with any OneWire devices
OneWire oneWire(ONE_WIRE_BUS);

// Pass our oneWire reference to Dallas Temperature. 
DallasTemperature sensors(&oneWire);

void setup()
{
  // start serial port
  Serial.begin(9600);

  // Start up the library
  sensors.begin();
}

void loop()
{
  // call sensors.requestTemperatures() to issue a global temperature
  // request to all devices on the bus
  sensors.requestTemperatures();

  // Print the temperature in Celsius
  Serial.print("Temperature is: ");
  Serial.print(sensors.getTempCByIndex(0));
  Serial.println(" C");
  delay(1000);
}