Mqtt broker on ESP8266 #4

[Later edit]. On you will find instructions on how to install the ESP8266 MQTT broker on your EPS8266 and how to use the MQTT service provided by

I have more progress in ESP8266 as MQTT broker.

What I have for now on this ESP8266 module:

  • MQTT broker functionality
  • Bridging data to/from and another MQTT broker ( usually a cloud MQTT instance)
  • websockets connectivity ( I can now connect with my Homy application directly to the ESP8266 acting as an MQTT broker)
  • OTA (Over The Air) updates. Every time I have a new software update the ESP8266 is updating itself so, I can say that I have continuous integration (CI) and continuous deployment(CD). Also all the modules are activated over the air.
With all those function in place I still have 34kb of heap available for other features and yes is running on an ESP with a minimum 1Mb of memory. ESP8285 is a good candidate for running the broker.

Is working also on and old ESP-01 with 512kb but without OTA functionality.

Previous posts on the same subject:

IoT with ESP8266: Mqtt broker on ESP8266 #1

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