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

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

Laser should have some, I will email them

(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

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.

[*]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
  

(05-17-2026, 06:57 AM)slychiu Wrote: 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

This is FANTASTIC! - I just got started with a Home Assistant deployment, and I'm mightily impressed. I'd already mused to myself, "wouldn't it be great if I could integrate Comfort with this..." :-) 

Just so I'm clear, this includes a FULL HAOS deployment complete with the supervisor layer yes? - exactly the same experience as I'd get with a Home Assistant Green? - not just the Home Assistant core?

But it then begs the obvious question... - since the CM4 already includes comfort specific integrations, - would I lose them if I were to restore my current HA config? - either at the onboarding stage (by restoring an existing backup instead of going through the startup & onboarding again) or by restoring a backup later on after the CM4 HA instance is up & running as per the standard setup process... Obviously I've already done quite a few hours of config & testing on my existing HA instance, & I'd really rather not have to go through all that again if I can avoid it... (assuming I can even remember all the steps I already performed!)

So, what would be the advice/guidance for an existing HA instance to migrate to this new UCM?

Many thanks

Paul G.

Actually... I have further questions.. - the device page specifies: "USB: 1 × USB 2.0 (maintenance use only)" - How does that square with the need to connect a Zigbee/Thread radio to the HA instance? - I currently have the (USB only) Sonoff Dongle Plus MG24... I am aware of the Sonoff Dongle MAX which can connect via ethernet/wifi, so I guess that could solve that one... But the next one isn't so simple: "Storage: Pre-programmed micro SD card (included)" I'm really wary of SD for the write-heavy load of HA's recorder database, and the subsequent wear on the SD card... - is there any way at all to utilise the PCIe hardware which does exist on the CM4 to connect (say) an NVMe SSD via the appropriate HAT??

Thoughts??

Paul G.

---

Or.. how about, a free-tier cloud option like (say) Oracle Cloud's perpetually-free ARM instance running MariaDB, joined to my tailnet, to provide a shared, professionally hosted, always-on database as the target for the recorder database instead of any local storage? - anyone tried that?

Thoughts??

Paul G.