DHT11 and DHT22, AM2302, RHT03

DHTx.ino

#include "DHT.h" // https://github.com/markruys/arduino-DHT  Support for DHT11 and DHT22, AM2302, RHT03
 
#if defined(ESP8266)
  #define DHT_PIN    D1
#elif defined(ESP32)
  #define DHT_PIN    16
#endif

float temperature;
float humidity;

DHT dht;
 
void setup() {
  Serial.begin(115200);
  delay(10);

  dht.setup(DHT_PIN);
}
 
void loop() {
    delay(dht.getMinimumSamplingPeriod());

    temperature = dht.getTemperature();
    humidity = dht.getHumidity();

    if (isnan(temperature) || isnan(humidity)) {
      Serial.printf("DHT reading failed!\r\n");
      return;
    } else {
      Serial.printf("Temperature: %2.1f Celsius\tHumidity: %2.1f%%\r\n", temperature, humidity);
    }     
}