daikin2mqtt

daikin2mqtt

A software bridge between certain popular Daikin™ HVAC units and MQTT.

N.B. This code has been independently developed using a mixture of observed behaviour and information freely available on the Internet. It is neither endorsed nor supported by Daikin in any way whatsoever. You use this software entirely at your own risk.

Description and Purpose

This project provides a two-way link between some Daikin HVAC units' WiFi interfaces and your MQTT IoT network.

daikin2mqtt runs as a background service or daemon and keeps track of the availability of the HVAC units and provides an easy to use MQTT interface.

User Guide

See USER_GUIDE.md

Rationale and Inspiration

The connectivity of these HVAC units is known to be rather temperamental; units seem to appear and disappear occasionally even on well-configured WiFi networks. This project aims to smooth out these wrinkles as much as possible and provide a simple to use MQTT interface that will be accessible by most home automation systems and MQTT dashboards.

We adopt the old Unix™ philosophy of trying to 'do just one thing and do it well'.

We think that https://zigbee2mqtt.io does a great job of standardising its MQTT messages, so our message structure is inspired by theirs.

The predecessor to this project was the Daikin Integration in the https://github.com/SMerrony/aghast project. In turn, that project was inspired by https://github.com/ael-code/daikin-control .

Supported Devices

Note the the Integration does not directly support specific HVAC units, rather it communicates with the network adapters that may be built-in, or added-to, various 'inverters' (as Daikin refers to their interior units).

• BRP069B41 - the Integration has been extensively tested with the BRP069B41 adapters. We would expect all of the BRP069B41/2/3/4/5 adapters to work.

• BRP069A41/2/3/4/5 - we believe that the previous models, the BRP069A41/2/3/4/5 should also work.

• BRP072A42 - we expect that the BRP072A42 adapter would also work.

We do not expect the BRP072Cnn or SKYFi units to work.

Please let us know if you can add to the above information.

Licence and Copyright

Copyright © 2021 Stephen Merrony

Daikin2MQTT is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

Daikin2MQTT is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with Daikin2MQTT. If not, see https://www.gnu.org/licenses/.