#include "DHT.h"
 
#define DHT11PIN 7        // define the digital I/O pin
#define DHT22PIN 6        // define the digital I/O pin
#define DHT22modulePIN 5  // define the digital I/O pin
 
#define DHT11TYPE DHT11         // DHT 11 
#define DHT22TYPE DHT22         // DHT 22
#define DHT22moduleTYPE DHT22   // DHT 22 module

DHT dht11(DHT11PIN, DHT11TYPE);
DHT dht22(DHT22PIN, DHT22TYPE);
DHT dht22module(DHT22modulePIN, DHT22moduleTYPE);
 
void setup() {
  Serial.begin(9600); 
   
  dht11.begin();
  dht22.begin();
  dht22module.begin();
}
 
void loop() {
  // Read all temperature and humidity sensor data
  float h11 = dht11.readHumidity();
  float t11 = dht11.readTemperature();
  float h22 = dht22.readHumidity();
  float t22 = dht22.readTemperature();
  float h22module = dht22module.readHumidity();
  float t22module = dht22module.readTemperature();
 
  // check if returns are valid and print the sensor data
  if (isnan(t11) || isnan(h11)) {
    Serial.println("Failed to read from DHT #1");
  } else {
    Serial.print("Humidity 11: "); 
    Serial.print(h11);
    Serial.print(" %\t");
    Serial.print("Temperature 11: "); 
    Serial.print(t11);
    Serial.println(" *C");
  }
  if (isnan(t22) || isnan(h22)) {
    Serial.println("Failed to read from DHT #2");
  } else {
    Serial.print("Humidity 22: "); 
    Serial.print(h22);
    Serial.print(" %\t");
    Serial.print("Temperature 22: "); 
    Serial.print(t22);
    Serial.println(" *C");
  }
  if (isnan(t22module) || isnan(h22module)) {
    Serial.println("Failed to read from DHT #2");
  } else {
    Serial.print("Humidity 22module: "); 
    Serial.print(h22module);
    Serial.print(" %\t");
    Serial.print("Temperature 22module: "); 
    Serial.print(t22module);
    Serial.println(" *C");
  }
  Serial.println();   // print a free line to make the output nicer
  delay(10000);       // print new values every 10 seconds
}