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CUL: No answer

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--- Zitat ---I gave the relayboard a specific name (USB_RELAY, instead of USB0, USB1 etc) so i thought this would work
--- Ende Zitat ---

--- Zitat ---How and where ist the relayboard defined ?
--- Ende Zitat ---
The system defines it as ttyUSBx. The x might change with a reboot. There is no rule. Therefore the suggestion of Beta-User to define the CUL by-id(what you already did).
--- Zitat ---if it's done in all ends
--- Ende Zitat ---
That's the question.  ;)
--- Zitat ---I only uded the rule for the relayboard, not for the nanocul.
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Maybe the posting of the definition helps.

But in Fhem, i did like this:

--- Code: --- /dev/serial/by-id/usb-1a86_USB2.0-Serial-if00-port0@38400 0000
--- Ende Code ---

It connected by id right?
What rule can / do i need to make

Should be OK. The Hub: is it USB3 compatilbe? If: try one not supporting USB3.

It is this USB 2.0 Hub: https://nl.aliexpress.com/item/4000291584825.html?spm=a2g0s.9042311.0.0.27424c4d7k1bHd

I still believe your problem is the definition of the relay card. Stop the program which controls the relay card and the CUL will work.


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