Implementing a smart thermostat (using SAT)

[proddy]

Thanks to @heeph on Discord, I was made aware of this cool project SAT (Smart Autotune Thermostat) which implements a self-learning heating curve as a Home Assistant component for OpenTherm. We plan to collaborate and extend this to support EMS devices via EMS-ESP.

This issue is to track progress.

[proddy]

sergeantd, the main developer on SAT recommended I start looking at these files to build the EMS coordinator. There is no documentation unfortunately so need to traverse through a lot of undocumented Python code. If anyone wants to help, please shout!

https://github.com/Alexwijn/SAT/blob/develop/custom_components/sat/coordinator.py
https://github.com/Alexwijn/SAT/blob/develop/custom_components/sat/mqtt/__init__.py
https://github.com/Alexwijn/SAT/blob/develop/custom_components/sat/const.py
https://github.com/Alexwijn/SAT/blob/develop/custom_components/sat/config_flow.py
https://github.com/Alexwijn/SAT/tree/develop/custom_components/sat/translations

[proddy]

First version is being tested. more details on the SAT GitHub site and discord channel.

[olivluca]

I'm probably being thick but I cannot see any detail either in the changelog here or in the changelog of SAT (and I'm not keen in joining a discord channel just to ask stupid questions 😅)

[csutcliff]

From the discord:

The first alpha version with EMS support is available.

You can test it by downloading SAT and then go to Developer Tools -> Actions

action: update.install
target:
  entity_id: update.smart_autotune_thermostat_update
data:
  version: mqtt-coordinators

[olivluca]

Thank you, so I gather it's in the mqtt-coordinators branch (mind me, I'm not currently using neither ems-esp32 nor sat, I'm just sitting on the fence, waiting for when it's possible to replace my on-off thermostat).

[proddy]

Adding a link to the GitHub discussion on the mappings: #2257

[proddy]

The SAT team just released their Smart Autotune Thermostat Home Assistant HACS component version 4.0 with native integration for EMS-ESP over MQTT.