Using MQTT protocol to Communicate with ESP32

This project is to develop a complete application that can be used to communicate with microcontrollers like arduino or ESP32

MQTT broker

Here I have used mosca server as a Simple MQTT broker

Express App

I have created restful services so that I can implement any frontend by which users can interact with arduino

Working

Whenever user sends a data or instruction like changing current state of light through post request to our express server, our server will publish that data to channel that was subscribed by all our devices

ESP32 only interacts with MQTT broker

User only interacts with Express app

example: https://github.com/venkat-r-r/arduino-sketches/tree/main/mqtt_client