DHT11 Sensor no value Arduino

You try to access DHT11 Sensor from (Arduino) Wemos D1 mini without success?

Solution: Use "D4" instead of "4" for the Datapin!

#include
#include
#include
#include
#include
#include

#define DHTPIN D4                                    // what digital pin we're connected to
const char* ssid = "xxxxxxxx";
const char* password = "xxxxxx";               // Wireless Passcode

ESP8266WebServer server(80);

const int led = 5;

#define DHTTYPE DHT11                            // DHT 11
// define DHTTYPE DHT22                               // DHT 22  (AM2302), AM2321
//#define DHTTYPE DHT21   

.....   

IOT selbst gebaut dank günstigen praktischen Adafruit Feather

Mit einem 

Adafruit Feather HUZZAH with ESP8266 für $17 Sensoren via WIFI vernetzen:

https://www.adafruit.com/product/2821 oder mit dem Feather mit ESP-F WIFI https://www.adafruit.com/product/2821


Und dann die Daten in die Adafruit IO Cloud speisen mittels MQTT:

https://learn.adafruit.com/mqtt-adafruit-io-and-you/getting-started-on-adafruit-io

Raspi MQTT Broker
http://iot.santronix.in/2017/01/29/mosquitto-mqtt-broker-on-raspberry-pi-3/