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UCMA/Pi for Home Assistant - Printable Version

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UCMA/Pi for Home Assistant - slychiu - 05-17-2026

I am happy to announce that the new UCMA/Pi is ready




This includes a Raspberry Pi CM4 Compute module so there is no need for an external Raspberry device
The configuration is simple as it comes with a preconfigured Micro SD card 
You can upload the CCLX file using the Comfort Add-on's Web UI,a nd the zones and Outputs are auto-dscovered. No need to edit yaml files excedpt for advanced applications

Notifcations to Mobile  and Encrypted remote access are easily implemented

See the website at https://www.cytech.biz/brochure/UCMA-Pi.html
Instructions in the Comfort Forums here: http://www.comfortforums.com/thread-5857.html based onthe manual

The manual download link is https://cytech.biz/download_files.php?item_id=1520 

The Cytech Comfort MQTT add-on was based on thh work by koochyrat and Ingo, and it remain open-sourced, with the repository  at https://github.com/cytechtech/ucmpi4

RE: UCMA/Pi for Home Assistant - Majik - 06-24-2026

Any recommendation for UK suppliers?

My usual go-to is Laser, but they don't seem to have them on their website, and I've emailed their Sales team, and got no reply.

Cheers,

Keith

RE: UCMA/Pi for Home Assistant - slychiu - 06-24-2026

Laser should have some, I will email them

RE: UCMA/Pi for Home Assistant - Majik - 06-24-2026

(06-24-2026, 11:46 AM)slychiu Wrote: Laser should have some, I will email them

Thanks. I got a call. It appears some emails got lost (probably in spam folders).

Cheers,

Keith

RE: UCMA/Pi for Home Assistant - Howser - 07-01-2026

Glad to see the new UCM Pi is finally available.

When my UCM/Pi3 failed, I quickly realised just how important redundancy is. I'd like to get the new UCM Pi, but it would mainly be running the stock software, as I already have a Home Assistant setup with redundancy in place. Everything currently runs through Home Assistant, including Comfort to MQTT.

A few questions:
  • Will I be able to configure the UCM Pi to use the MQTT broker on my primary Home Assistant server?
  • Does the UCM Pi allow zone bypasses to be activated and deactivated directly, without having to create dedicated Comfort Responses? At the moment, that's something I have to do with Comfort to MQTT.
  • If the UCM Pi is connected to the network, can I display or integrate its dashboard within my main Home Assistant instance?

Thanks.

RE: UCMA/Pi for Home Assistant - slychiu - 07-02-2026

[*]Will I be able to configure the UCM Pi to use the MQTT broker on my primary Home Assistant server?


[*]Yes. I believe so although I have not tried 
[*]The UCM Pi can be configured to communicate directly with the MQTT broker hosted on your main Home Assistant instance (such as the Mosquitto broker add-on).
How to configure it:
  • You do not need to run a secondary MQTT broker on the UCM Pi itself.
  • In the MQTT client settings on the UCM Pi, change the host address to the IP address of your primary Home Assistant server.
  • Enter the corresponding MQTT username, password, and port (the default is usually 1883)
  • Ensure both devices are on the same local network and that no router or firewall settings are blocking traffic on that specific port.


[*]Does the UCM Pi allow zone bypasses to be activated and deactivated directly, without having to create dedicated Comfort Responses? At the moment, that's something I have to do with Comfort to MQTT.

[*]Currently it does not have bypass zones button directly , but we wi are considering adding this in the future


[*]If the UCM Pi is connected to the network, can I display or integrate its dashboard within my main Home Assistant instance?
[*]If you  want to view the UCM Pi's existing dashboard within your primary setup, you can embed it using an iframe.
  • On your main Home Assistant dashboard, add a Webpage Card.
  • Enter the local IP and port of the UCM Pi (e.g., http://:8123) into the URL field.
  • Note: This  acts as a window to the second device; you may need to log into the UCM Pi within that card, and the controls are not natively integrated into the primary system's backend. I have not tried this