EMS-ESP

EMS-ESP is a open-source system to communicate with EMS (Energy Management System) based boilers, thermostats and other modules from manufacturers like Bosch, Buderus, Nefit, Junkers and Sieger.

The code is writen for the Espressif ESP8266 microcontroller and supports a telnet console for real-time monitoring and configuration and customizable MQTT support for publishing the information to a home automation system such as Home Assistant or Domoticz.

Please reference the Wiki for further details and instructions on how to build and configure the firmware.

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An example of the Home Assistant integration:

Using BBQKees' EMS Gateway circuit:

Example of the EMS-ESP's telnet console: