DS18B20

DS18B20.ino

#if defined(ESP8266)
  #define DS18B20_PIN    D5
#elif defined(ESP32)
  #define DS18B20_PIN    16
#endif

#include <OneWire.h>
#include <DallasTemperature.h> // Supports DS18B20 or DS1822, DS1820, MAX31820, MAX31850
 
OneWire oneWire(DS18B20_PIN);
DallasTemperature sensors(&oneWire);

void setup() {
  Serial.begin(115200);
  
  Serial.print("DallasTemperature Library version: ");
  Serial.println(DALLASTEMPLIBVERSION);

  sensors.begin();
}

void loop() {
  sensors.requestTemperatures(); 
  float temperatureC = sensors.getTempCByIndex(0);
  float temperatureF = sensors.getTempFByIndex(0);
  Serial.print(temperatureC);
  Serial.println("C");
  Serial.print(temperatureF);
  Serial.println("F");
  delay(2000);
}