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EMS-ESP32/README.md
2025-10-20 22:24:48 +02:00

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<h1 align="center">EMS-ESP</h1>
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**EMS-ESP** is an open-source firmware for the Espressif ESP32 microcontroller to communicate with **EMS** (Energy Management System) compatible equipment from manufacturers such as Bosch, Buderus, Nefit, Junkers, Worcester, Sieger, elm.leblanc and iVT.
It requires a small circuit to interface with the EMS bus which can be purchased from <https://bbqkees-electronics.nl> or custom built.
## 📦&nbsp; **Key Features**
- Compatible with EMS, EMS+, EMS2, EMS Plus, Logamatic EMS, Junkers 2-wire, Heatronic 3 and 4
- Supporting over 120 different EMS compatible devices such as thermostats, boilers, heat pumps, mixing units, solar modules, connect modules, ventilation units, switches and more
- Easy to add external Temperature and Analog sensors that are attached to GPIO pins on the ESP32 board
- A multi-user, multi-language web interface to change settings and monitor incoming data
- A simple to use console, accessible via Serial/USB or Telnet for advanced operations and detailed monitoring
- Native integration with Home Assistant, Domoticz, openHAB and Modbus
- Easy setup and install with automatic updates
- Simulation of remote thermostats
- Localized in 11 languages, and customizable to rename any device or sensor
- Extendable by adding own custom EMS entities
- Expandable via adding user-built external modules
- A powerful Scheduler to automate tasks and trigger events based data changes
- A Notification service to alert you of important events
## 🚀&nbsp; **Installing**
Head over to [download.emsesp.org](https://download.emsesp.org) for instructions on how to install EMS-ESP. There is also further details on which boards are supported in [this section](https://docs.emsesp.org/Installing/) of the documentation.
## 📋&nbsp; **Documentation**
Visit [emsesp.org](https://docs.emsesp.org) for more details on how to install and configure EMS-ESP. There is also a collection of Frequently Asked Questions and Troubleshooting tips with example customizations from the community.
## 💬&nbsp; **Getting Support**
To chat with the community reach out on our [Discord Server](https://discord.gg/3J3GgnzpyT).
If you find an issue or have a request, see [here](https://docs.emsesp.org/Support/) on how to submit a bug report or feature request.
## 🎥&nbsp; **Live Demo**
For a live demo go to [demo.emsesp.org](https://demo.emsesp.org). Pick a language from the sign on page and log in with any username or password. Note not all features are operational as it's based on static data.
## 💖&nbsp; **Contributors**
EMS-ESP is a project created by [proddy](https://github.com/proddy) and owned and maintained by both [proddy](https://github.com/proddy) and [MichaelDvP](https://github.com/MichaelDvP) with support from [BBQKees Electronics](https://bbqkees-electronics.nl).
If you like **EMS-ESP**, please give it a ✨ on GitHub, or even better fork it and contribute. You can also offer a small donation. This is an open-source project maintained by volunteers, and your support is greatly appreciated.
## 📢&nbsp; **Libraries used**
- [esp8266-react](https://github.com/rjwats/esp8266-react) by @rjwats for the core framework that provides the Web UI, which has been heavily modified
- [uuid-\*](https://github.com/nomis/mcu-uuid-console) from @nomis. The console, syslog, telnet and logging are based off these awesome open source libraries
- [ArduinoJson](https://github.com/bblanchon/ArduinoJson) for all the JSON processing
- [espMqttClient](https://github.com/bertmelis/espMqttClient) for the MQTT client
- [ESPAsyncWebServer](https://github.com/ESP32Async/ESPAsyncWebServer) and [AsyncTCP](https://github.com/ESP32Async/AsyncTCP) for the Web server and TCP backends
## 📜&nbsp; **License**
This program is licensed under GPL-3.0
## **Screenshots**
### Web Interface
| | |
| ---------------------------------- | -------------------------------- |
| ![Web Settings](media/web_settings.png) | ![Web Status](media/web_status.png) |
| ![Web Devices](media/web_devices.png) | ![Web MQTT](media/web_mqtt.png) |
| ![Web Edit](media/web_edit.png) | ![Web Log](media/web_log.png) |
### Telnet Console
![Console](media/console0.png)
### Home Assistant
![Home Assistant](media/ha_lovelace.png)