This sketch can provide sensor information of an DHT11 with an ESP8266 via WiFi to an MQTT server. The ESP8266 will wake up from deep sleep mode every 120 s (WAKEUP_TIME) and transmit to an MQTT server.
The design was tested on a NodeMCU DEVKIT 1.0.
| Pin | GPIO | |
|---|---|---|
| D0 | GPIO16 | RST |
| D5 | GPIO14 | DHT data pin |
Before using you have to configure your Wifi SSID and password in the wifi.h file and the MQTT paramaters in the .ino file.