Just a thought to add, but where did the FTDI serial-USB adapter come from? 
>From my work in ham radio I've found that most of them are Chinese fakes, 
not actually licensed and compatible, just a quick reverse-engineer and 
ship it. Took me three tries ordering "real" FTDI adapters before I got one 
that was actually "real". The current one I use was almost $40 if I recall 
and is 100% rock solid, while the others were $10-20 and "flaky" - drop 
connections, random timeouts, etc., sometimes immediately and sometimes 
after a day or three. If you have one from Davis then I'd trust it as 
"real".


On Wednesday, March 16, 2022 at 5:11:55 AM UTC-8 [email protected] wrote:

> (You might get a little more information by setting debug=1 in the 
> configuration file, weewx.conf.)
>
> Things to try:
>
>    - This still feels a lot like either a bad port, or a bad 
>    serial-to-usb connector.
>    - Another possibility is that another instance of weewxd is competing 
>    for the port, although that would presumably be reflected in the log. 
>    - Try rebooting the PC. 
>    - Check the baudrate.
>
>
> On Wed, Mar 16, 2022 at 5:16 AM David Hathaway <[email protected]> 
> wrote:
>
>> Thanks Greg.  It appears my computer has a bad USB port; I used the 
>> USB-serial connection.  I switched to a different port and wee_device 
>> --info returned device status.
>
>
>>

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