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

// Data wire is plugged into digital 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 sensor 
DallasTemperature sensors(&oneWire);

void setup() {
  // Start serial communication
  Serial.begin(9600);

  // Initialize the DallasTemperature library
  sensors.begin();
}

void loop() {
  // Request temperatures from all devices on the bus
  sensors.requestTemperatures();

  // Get temperature in Celsius
  float temperatureC = sensors.getTempCByIndex(0);

  // Check if temperature reading is valid
  if (temperatureC != DEVICE_DISCONNECTED_C) {
    // Print the temperature to Serial Monitor
    Serial.print("Temperature: ");
    Serial.print(temperatureC);
    Serial.println(" °C");
  } else {
    // If reading failed, print an error message
    Serial.println("Error: Unable to read temperature.");
  }

  // Wait for a short delay before reading again
  delay(1000);
}