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This article introduces how to use MQTT in the Flask project, and implement the connection, subscription and messaging, etc of MQTT.

This article introduces how to use MQTT to implement the connection, messaging, etc between Android client and MQTT broker, through using Kotlin.

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.