//https://randomnerdtutorials.com/guide-for-ds18b20-temperature-sensor-with-arduino/ #include #include // Data wire is conntec to the Arduino digital pin 4 #define ONE_WIRE_BUS 4 // 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(void) { // Start serial communication for debugging purposes Serial.begin(9600); // Start up the library sensors.begin(); } void loop(void){ // Call sensors.requestTemperatures() to issue a global temperature and Requests to all devices on the bus sensors.requestTemperatures(); Serial.print("Celsius temperature: "); // Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire Serial.println(sensors.getTempCByIndex(0)); delay(1000); }