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Davis VP2 no wind information in CumulusMX

Discussion specific to Davis weather stations
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zwik
Posts: 5
Joined: Thu 17 Feb 2022 10:28 am
Weather Station: Davis VP2
Operating System: Windows

Davis VP2 no wind information in CumulusMX

Post by zwik »

Hello all,

We have a Davis Weatherstation VP2 and try to read it out using CumulusMX. Everything seems to work pretty well but we can't get any readings from the wind sensors. The sensors are connected though and we can see values changing on the console, however not when downloading the data to our computer. To be honest I don't have a clue where to start. Could you please help us out?


Kindest regards,
User avatar
mcrossley
Posts: 12697
Joined: Thu 07 Jan 2010 9:44 pm
Weather Station: Davis VP2/WLL
Operating System: Bullseye Lite rPi
Location: Wilmslow, Cheshire, UK
Contact:

Re: Davis VP2 no wind information in CumulusMX

Post by mcrossley »

Switch on debug and and data logging in the Program Settings, let MX run for a while - say 20 mins, then post the latest MXdiags file here. Thanks.
zwik
Posts: 5
Joined: Thu 17 Feb 2022 10:28 am
Weather Station: Davis VP2
Operating System: Windows

Re: Davis VP2 no wind information in CumulusMX

Post by zwik »

Thank you so far! I've enabled the logging and attached you can find the log file.
You do not have the required permissions to view the files attached to this post.
User avatar
mcrossley
Posts: 12697
Joined: Thu 07 Jan 2010 9:44 pm
Weather Station: Davis VP2/WLL
Operating System: Bullseye Lite rPi
Location: Wilmslow, Cheshire, UK
Contact:

Re: Davis VP2 no wind information in CumulusMX

Post by mcrossley »

Thanks, it appears your console is sending invalid wind data - values of 255 mph.

I would perform a complete power cycle of your console - power lead and batteries out for 20 seconds - then try again.

You also have a problem with your dayfile.txt. It is using a list separator of ";", but your system is set to use "," - your locale being set to "en-US"

Have you changed the system locale setting? If you are going to keep the en-US settings, then you will have to edit your dayfile.txt and change all the ";" characters to ",". But check your decimal characters first! If they are set to "," then they will need changing first - beware of later entries already using the ,. combination though.
zwik
Posts: 5
Joined: Thu 17 Feb 2022 10:28 am
Weather Station: Davis VP2
Operating System: Windows

Re: Davis VP2 no wind information in CumulusMX

Post by zwik »

Thanks for having a peek! The weatherstation is remote so I can't access it right now, but I will once I can. I shall have a look at the locale indeed! Noticed that in the log file as well.
zwik
Posts: 5
Joined: Thu 17 Feb 2022 10:28 am
Weather Station: Davis VP2
Operating System: Windows

Re: Davis VP2 no wind information in CumulusMX

Post by zwik »

This weekend I was able to do the power cycle. I pulled out the power cable and also the batteries. I then talked a bit with someone so I'm positive it was well over a minute the power was disconnected. I then inserted the batteries and connected the power cable.

The console was receiving information from the ISS and was displaying everything again on the display, including wind. I was then checking on the computer if wind information was there. I enabled the extra logging again in Cumulus and let it run for a while. I checked the dashboard but nothing about wind was showing up (0 values). I then checked the logs and it is exactly as it was in my second post of this thread.

What else could I do to solve this?
User avatar
mcrossley
Posts: 12697
Joined: Thu 07 Jan 2010 9:44 pm
Weather Station: Davis VP2/WLL
Operating System: Bullseye Lite rPi
Location: Wilmslow, Cheshire, UK
Contact:

Re: Davis VP2 no wind information in CumulusMX

Post by mcrossley »

Sorry, but I've never come across this issue before.

The next steps I would try would be...

1. Power down again, and remove/insert the logger.

2. Change the console logging interval to another value, then change it back again. That forces the logger to clear its memory and start again.

But the issue would seem to be more fundamental - one for Davis support?
zwik
Posts: 5
Joined: Thu 17 Feb 2022 10:28 am
Weather Station: Davis VP2
Operating System: Windows

Re: Davis VP2 no wind information in CumulusMX

Post by zwik »

Thank you for your answer.

I'll try again next weekend.

How would you change the interval on the logger? Do you mean with cumulusmx?
User avatar
mcrossley
Posts: 12697
Joined: Thu 07 Jan 2010 9:44 pm
Weather Station: Davis VP2/WLL
Operating System: Bullseye Lite rPi
Location: Wilmslow, Cheshire, UK
Contact:

Re: Davis VP2 no wind information in CumulusMX

Post by mcrossley »

You can set using either...
1. A terminal emulator and the SETPER command.
2. Using the Advanced Options in Cumulus MX.
3. Using the Davis WeatherLink desktop software.
User avatar
SJG1976
Posts: 365
Joined: Wed 21 Dec 2011 11:04 am
Weather Station: Davis WLL, with Airlink
Operating System: Raspberry Pi3 MX on USB Drive
Location: Glemsford, Suffolk
Contact:

Re: Davis VP2 no wind information in CumulusMX

Post by SJG1976 »

Is this a Wired or Wireless Davis VP2.

I had issues along time ago on a Cabled Davis VP1 and it turned out to be an earth loop from the sensor to the Laptop.

It would all go fine and then the Wind Gusts would peak in the 100s all the time.

I fixed it by extra earthing.
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