Try a better power supply on the pi or whatever you have plugged into it. 
Sometimes you need a powered usb hub.

On Tuesday, March 25, 2025 at 1:03:23 PM UTC-7 [email protected] wrote:

> I can't find why this is happening. I have tried to change OS (Buster => 
> Bookworm), change HW (another RPi3B) and tried different versions of Weewx 
> (4.2.0 and the latest).
>
> Is there any other setting that is causing this?
>
> Users? Groups?
>
>
> Mar 25 20:56:04 RPi3B weewxd[650]: DEBUG weewx.drivers.wmr100: Bad USB 
> report received: [Errno 110] Operation timed out
> Mar 25 20:56:09 RPi3 weewxd[650]: DEBUG weewx.drivers.wmr100: Bad checksum 
> on buffer of length 5
> Mar 25 20:56:24 RPi3B weewxd[650]: DEBUG weewx.drivers.wmr100: Bad USB 
> report received: [Errno 110] Operation timed out
> Mar 25 20:56:29 RPi3B weewxd[650]: DEBUG weewx.drivers.wmr100: Bad 
> checksum on buffer of length 13
> Mar 25 20:56:44 RPi3B weewxd[650]: DEBUG weewx.drivers.wmr100: Bad USB 
> report received: [Errno 110] Operation timed out
>
>
>

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