Replace EQ-3 Max Cube with nano CUL 868 - Please help...

Begonnen von LauW, 13 Oktober 2021, 00:53:22

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Hi there,

Okay so i´ve tried figuring this stuff out for days and no i give up :-)
What i have now is a fine setup of EQ-3 Max! products connected via a Cube.
I integrated this into HomeAssistant, but the "relay" is buggy and i´ve often had issues with the Cube, even without using Home Assistant.
So i researched and found out i can flash the Cube, but since that´s a one-way i would rather buy an alternative.
That´s where i found this usb stick:

So now i have my Home Assistant server and this usb thing.... what now?
I´ve read that i need HomeGear or FHEM installed that uses the usb thing and Home Assistant then connects to HG or FHEM.
But i cannot, for the love, figure out how and where...

My Home Assistant is running from a Virtual Machine on my Lenovo ThinkCentre M93p with VMware Esxi installed.
I tried connecting the usb and use passthrough to the VM running HA.
That worked somewhat... when i tried some command (cannot remember it now) i got a permission denied.
I think the best is connecting the usb to a Raspberry Pi, i have a unused RPI3 that i thought using for it.

If that was the plan with RPI3, what OS should i put on it and do i install FHEM, HomeGear or something else?
I don´t mind at all following some guides... but i cannot find any for what im trying to do.
When i find any, they allready have FHEM installed or clearly knows a lot more about this stuff then me :-)

I do know my way around coding and such, but im just a bit lost here and need someone to guide and help me in the right direction.

Thanks in advance!

And damn sorry if this post is in the wrong place... :-/



Hi there,

first: Welcome to the FHEM forum!

The CUL you found should work, but I'd rather recommend to go for a STM32 based alternative: In the FHEM-Wiki you may find it as MapleCUN. As this provides network integration itself, it can also be handed over to a virtualized server. The backside: it's by far more complex to configure inside FHEM than a "normal CUL".

For FHEM itself, there's plenty of options how to install, including also  a docker container. As a start, I'd recommend using RaspiOS lite (no GUI) and install the "easy way" as mentionned on the left side on

Then immediately do an update (this is then done from within FHEM, apt is then no longer used for updates!).

For first orientation in FHEM see

To connect FHEM to other systems, there's quite a few options also. The most generic one imo is using MQTT - unfortunately, there are a lot of instructions available, but not for the most "modern" way: MQTT2_CLIENT (or MQTT2_SERVER) and MQTT_GENERIC_BRIDGE.

Hope this helps for a start, please do not hesitate to ask further questions.

Kind regards,

Server: HP-elitedesk@Debian 12, aktuelles FHEM@ConfigDB | CUL_HM (VCCU) | MQTT2: MiLight@ESP-GW, BT@OpenMQTTGw | MySensors: seriell, v.a. 2.3.1@RS485 | ZWave | ZigBee@deCONZ | SIGNALduino | MapleCUN | RHASSPY
svn: u.a MySensors, Weekday-&RandomTimer, Twilight,  div. attrTemplate-files


Once you have your MAX devices up and running in FHEM, for the integration in Home Assistant, check out