Dallas

// Include the libraries we need
#include <OneWire.h>
#include <DallasTemperature.h>
#define ONE_WIRE_BUS 13 // Data wire is plugged into port 13 on the Arduino

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

void setup(void)
{
  Serial.begin(9600);
  Serial.println("Dallas Temperature IC Control Library Demo");
  sensors.begin();   // Start up the library
}

void loop(void)
{
  // call sensors.requestTemperatures() to issue a global temperature  request to all devices on the bus
  Serial.print("Requesting temperatures...");
  sensors.requestTemperatures(); // Send the command to get temperatures
  Serial.println("DONE");
  // After we got the temperatures, we can print them here.
  // We use the function ByIndex, and as an example get the temperature from the first sensor only.
  Serial.print("Temperature for the device 1 (index 0) is: ");
  Serial.println(sensors.getTempCByIndex(0));
}