Upload Sensor Data to MQTT Cloud Service via NodeMCU (ESP8266)This example will demonstrate how to report the temperature and humidity data collected by the DHT11 sensor to the MQTT service in the cloud through the MQTT protocol and the NodeMCU based on ESP8266 , and show how the application subscribes to and processes the data.
Introduction to the Commonly Used MQTT Client LibraryThis article lists the MQTT client libraries of some commonly used programming languages, and uses sample codes to help readers get started quickly.
Properties and Loads | MQTT 5.0 New FeaturesCompared with MQTT 3.1.1, MQTT 5.0 protocol adds many properties, which are distributed in variable headers and payloads of packet.