Weather Software > What Weather Software should I use/buy?

Software to Support Second Anemometer

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johnd:
Any Davis station that uses the traditional console/logger approach as receiver/logger for data handling is stuck with using the legacy or v1 API (ie the one described in the Davis Serial Tech Ref document) . This has only a single slot for wind data (ie accommodates just a single anemometer) and there's no way of changing this.

The introduction of WLL, which in theory allows an anemometer on all 8 of the wireless channels, changed all of this, but uses a completely different and far more flexible v2 API.

Most of the familiar third-party software (Weatherlink for Windows/Mac, Weather Display, Cumulus/MX etc etc) will have been designed around using the legacy API and so its whole data handling and dashboard only accommodates a single anemometer. None of the well-known software (other than weatherlink.com of course) has caught up fully with the v2 API yet and, to be fair, it would be a huge task to provide full compatibility with the v2 API, eg allowing for multiple anemometers rather than just a single unit, and which is indeed all that most users will have. The one I'm not sure about is weewx, but I suspect that will have similar constraints.

The only solution I can think of right now for more than one anemometer is to use WLL and weatherlink.com on a Pro plan. This provides a multi-anemometer dashboard and then a data store also.  If you want to do more with the data then you can download it into supplementary software like the Prowlar program that we run for detailed reporting.

stefanbagnato:

--- Quote from: Mattk on June 01, 2022, 10:11:05 PM ---If your current VP2 wind speed is not an accurate representation at 3m then is there an issue with simply mounting the existing one higher? The anemometer should have a 40 foot cable.

--- End quote ---

Lol I cannot argue with your logic.  However, since I've had it at 10ft for 6 years, I think I'd probably rather keep it there and then add another one at 35ft on the roof.



--- Quote from: waiukuweather on June 02, 2022, 12:54:27 AM ---
--- Quote --- For WD, is WLL required?
--- End quote ---
to get a second windspeed reading ,yes,sorry

--- End quote ---

No problem, just wanted to make sure I understood.



--- Quote from: johnd on June 02, 2022, 04:01:51 AM ---Any Davis station that uses the traditional console/logger approach as receiver/logger for data handling is stuck with using the legacy or v1 API (ie the one described in the Davis Serial Tech Ref document) . This has only a single slot for wind data (ie accommodates just a single anemometer) and there's no way of changing this.

The introduction of WLL, which in theory allows an anemometer on all 8 of the wireless channels, changed all of this, but uses a completely different and far more flexible v2 API.

Most of the familiar third-party software (Weatherlink for Windows/Mac, Weather Display, Cumulus/MX etc etc) will have been designed around using the legacy API and so its whole data handling and dashboard only accommodates a single anemometer. None of the well-known software (other than weatherlink.com of course) has caught up fully with the v2 API yet and, to be fair, it would be a huge task to provide full compatibility with the v2 API, eg allowing for multiple anemometers rather than just a single unit, and which is indeed all that most users will have. The one I'm not sure about is weewx, but I suspect that will have similar constraints.

The only solution I can think of right now for more than one anemometer is to use WLL and weatherlink.com on a Pro plan. This provides a multi-anemometer dashboard and then a data store also.  If you want to do more with the data then you can download it into supplementary software like the Prowlar program that we run for detailed reporting.

--- End quote ---

This is a great explanation, thank you.  I was vaguely aware of the v2 API, but I did not put two and two together regarding the compatibility with the existing softwares.  I really like my CMX setup as I've done a lot of customization over the years and have a completely customized dashboard.  However, the lack of support for a second anemometer (all other sensors have multiple options) is what is making me seriously consider switching it up.  I've never used WLL (had the basic WL with my first VP2 back in high school (20 years ago)) so I am going to read into that more.  If I did go that route, then I may need to reconsider a bunch of steps as I was getting ready to build my new server as the existing one holding the CMX MySQL DB and my IIS server is starting to fail.

johnd:
I'll let Mark comment on possible extensions to CMX (if he sees this post) but I suspect that he has his hands (and spare time) full with more routine regular maintenance of CMX.

I presume also that it's not impossible that CMX could extended incrementally to add more v2 API features (like a second anemometer for WLL users - the JSON for a second anemometer is there in the WLL local data feed) but I'm guessing it would be a big task and not sure how this would rank alongside other planned major feature extensions to CMX. TBH two anemometers is probably very much a minority interest and I guess Mark is likely to prioritise whatever new features are likely to be most in demand or most popular.

stefanbagnato:

--- Quote from: johnd on June 02, 2022, 11:29:56 AM ---I'll let Mark comment on possible extensions to CMX (if he sees this post) but I suspect that he has his hands (and spare time) full with more routine regular maintenance of CMX.

I presume also that it's not impossible that CMX could extended incrementally to add more v2 API features (like a second anemometer for WLL users - the JSON for a second anemometer is there in the WLL local data feed) but I'm guessing it would be a big task and not sure how this would rank alongside other planned major feature extensions to CMX. TBH two anemometers is probably very much a minority interest and I guess Mark is likely to prioritise whatever new features are likely to be most in demand or most popular.

--- End quote ---

110% agree.  I have weird ideas haha.  I'll research the WLL route and have the internal debate with myself as to how much I want to change things up or not.

waiukuweather:
not sure why Johnd has missed that weather display supports a second windspeed via the Davis WLL..he is replying to that information but somehow just ignores that in his posts and then instead goes on to put his support in behind having cumulus add that support instead
what is going on here?
disappointing

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