Is it possibe to use 1 console for 2 weewx systems?

[WindnFog]

Given the somewhat erratic behaviour of the Raspberry Pi's 4's USB ports and the handshaking between weewx and the data console, I suspect what I want to do is impossible, but here's a shot in the dark.  

I'd like to "split" my USB data from a Vantage Vue console between my production weewx Pi 4 and a development Pi 4.  weewx is working well using the Simulator on my development Pi, but I want to feed it actual data and use the Vantage driver.  What would happen if I fed the Vantage Vue console into a powered USB hub and then used two other ports as the data sources?

Both systems are using weewx 4.1.2.

- Paul VE1DX

[Stephen Hocking]

I'd suggest sending the Vue's data to something like MQTT, then have both the dev & prod boxes pick data up off it.

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[vince]

Not understanding your 'erratic behavior' commentary.  I've been running a pi4 via serial2usb converter from a VP2 for well over a year with zero issues.  No need to do crazy stuff like trying to split a serial communication.

[bell...@gmail.com]

Shameless plug, this what I do. I publish the data to MQTT and use MQTTSubscribeDriver in my various development environments.

rich

[Greg Troxel]

WindnFog <foc...@gmail.com> writes:

> Given the somewhat erratic behaviour of the Raspberry Pi's 4's USB ports
> and the handshaking between weewx and the data console, I suspect what I
> want to do is impossible, but here's a shot in the dark.

+1 to vince's comments. USB should be ok if your power supply is
adequate.

> I'd like to "split" my USB data from a Vantage Vue console between my
> production weewx Pi 4 and a development Pi 4. weewx is working well using
> the Simulator on my development Pi, but I want to feed it actual data and
> use the Vantage driver. What would happen if I fed the Vantage Vue console
> into a powered USB hub and then used two other ports as the data sources?

This doesn't really make sense. USB is a two-way bus, with one
originator (a computer) and some number of devices (serial ports,
disks). The hub is plugged into the computer, making it act like it has
more ports. You can't use a hub to put one serial adaptor on two
computers.

The two-way part means that the computer sends bytes to the console
(really to the 6150USB data logger) and the console replies. So yes,
you could fake up something where the bytes are proxied across and the
other computer's commands go nowhere.

But as people said, mqtt transmit is the way to go.

Or, you can just move it to the development box for an hour, and then
back. If the developemnt box doesn't clear the logger, the production
one will fetch the old records and all will be ok.

> Both systems are using weewx 4.1.2.

That's old, but that's not relevant to this discussion.

[WindnFog]

It's v4.10.2 - my typo mistake.  I always use the latest release of weewx.  I'll go with MQTT.

- Paul VE1DX