https://github.com/corny/mbus-esp32

This Arduino project retreives metering data via dbus and transmits it via MQTT
https://github.com/corny/mbus-esp32

arduino esp32 mbus

Last synced: 3 months ago
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This Arduino project retreives metering data via dbus and transmits it via MQTT

• Host: GitHub
• URL: https://github.com/corny/mbus-esp32
• Owner: corny
• License: mit
• Created: 2022-01-02T12:48:50.000Z (about 3 years ago)
• Default Branch: main
• Last Pushed: 2022-01-02T13:04:03.000Z (about 3 years ago)
• Last Synced: 2023-04-22T17:06:58.907Z (over 1 year ago)
• Topics: arduino, esp32, mbus
• Language: C++
• Homepage:
• Size: 2.93 KB
• Stars: 4
• Watchers: 1
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
M-Bus reader with ESP32

=======================

This Arduino project uses the UART2 interface of a ESP32 to

retreive data via [M-Bus](https://www.m-bus.de/mbus.html) from a smart meter and transmits it via

[MQTT](https://en.wikipedia.org/wiki/MQTT).

It is tested with a [CF UltraMaxx MK](https://www.itron.com/de/solutions/product-catalog/cf-ultramaxx-mk).

## Hardware

* [ESP32 development board](https://www.az-delivery.de/products/esp32-developmentboard)

* [IR Lesekopf](https://www.photovoltaikforum.com/thread/141332-neue-lesekopf-baus%C3%A4tze-ohne-smd-l%C3%B6ten/) for the optical interface

## M-Bus

Not scope of this project is decoding the mbus data.

You can learn about the data structure at:

* [M-Bus Telegramme](https://www.m-bus.de/telegramme.html)

* [Wärmezähler über optische M-Bus-Schnittstelle auslesen](https://www.mikrocontroller.net/topic/438972#6103099)

* [M-Bus Protokoll Ultramess C3](https://www.molline.de/fileadmin/content/content/Downloads/Produkte/02_W%C3%A4rmez%C3%A4hler/01_Kompaktz%C3%A4hler/06_WingStar_C3_T/M-Bus_Protokoll_Ultramess_C3_WingStar_C3.pdf)