   Serial.println("Node setup complete.");
   Serial.println("--------------------------------------------");
   Serial.println();
-  Serial.println("Soil Moisture, Light (RGB), Soil Temperature, Air Relative Humidity, Air Temperature, IR Level");
+  Serial.println("Soil Moisture, Light (RGB), Soil Temperature, Air Temperature, Air Relative Humidity, IR Level, DHT checksum error");
   delay(2000);
 }
 


  // DHT AIR T/RH SENSOR
  int chk = DHT.read11(DHT11_PIN);
  switch (chk)
  {
    case DHTLIB_OK:
      //               Serial.print("OK,\t");
      break;
    case DHTLIB_ERROR_CHECKSUM:
      Serial.print("Checksum error,\t");
      break;
    case DHTLIB_ERROR_TIMEOUT:
      Serial.print("Time out error,\t");
      break;
    case DHTLIB_ERROR_CONNECT:
      Serial.print("Connect error,\t");
      break;
    case DHTLIB_ERROR_ACK_L:
      Serial.print("Ack Low error,\t");
      break;
    case DHTLIB_ERROR_ACK_H:
      Serial.print("Ack High error,\t");
      break;
    default:
      Serial.print("Unknown error,\t");
      break;
  }
  // display data

  Serial.print(AirHumidity, DEC); // Air Humidity
  Serial.print(", ");
  Serial.print(photoIR);  // IR level
  Serial.print(", ");
  Serial.print(dht_checksum_error);  // DHT checksum error


  // finish
