#include <DallasTemperature.h>

DallasTemperature tempSensor;

void setup(void) {
  Serial.begin(9600);
  tempSensor.begin(3); // Connect DS18B20 to Digital Pin 3
}

void loop(void) {
    // Check if the sensor is working correctly
    switch(tempSensor.isValid())
    {
        case 1:
            Serial.println("Invalid CRC");
            tempSensor.reset(); // Reset Sensor
            return;
        case 2:
            Serial.println("Not a valid device");
            tempSensor.reset(); // Reset Sensor
            return;
    }

  // Read Temperature from DS18B20
  Serial.print(tempSensor.getTemperature());
  Serial.print("C");
  Serial.println();
}