EMS-ESP is a open-source system built for the Espressif ESP8266 microcontroller to communicate with EMS (Energy Management System) based boilers, thermostats and other modules from manufacturers like Bosch, Buderus, Nefit, Junkers and Sieger.

Features

• Supporting more than 50 EMS devices (EMS 1, EMS 2.0/Plus and Heatronics 3).
• A web interface for easy configuration and real-time monitoring of the EMS bus.
• Telnet for advanced configuration and verbose traffic logging.
• Configurable MQTT, with templates for Home Assistant and Domoticz.
• Includes an simple schematic for a test breadboard interface board.
• Native compatibility with bbqkees' EMS Gateway interface board.

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

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