Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

If you look in the documentation, you'll see that it suggests using hardware settings for pressure, altimeter, and barometer. That way, there will not be a problem of alternating between hardware and software computed values. On Wed, Jan 13, 2021 at 6:35 AM Greg Troxel wrote: > > gjr80 writes:

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

gjr80 writes: > Not at all. If you blindly set loop_request = 3 then yes your archive > record pressure values (as well as some other obs) may end up being a > combined hardware/software value. If you read the loop_request stanza it > warns you of this and points out the solution. It

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

> On 12 Jan 2021, at 12:12, Nate Bargmann wrote: > > * On 2021 12 Jan 13:40 -0600, galfert wrote: >> Stop saying that the airport is at the same elevation or at different >> elevation from you. That is extraneous and irrelevant information. > > I am merely attempting to be factual as I'll

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Excellent, glad things are looking better. Good luck. On Tuesday, January 12, 2021 at 7:15:37 PM UTC-5 brent...@gmail.com wrote: > This Loop2 packet disc has, I believed solved my issue. I was using the > loop1 packet, even though my console and it's firmware version does support > it. > > I

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Okay thank you for the correction on LOOP2 and what it includes. But do see now from the link referenced that LOOP2 is missing some optional sensors that some users may have. Seems like WLL is still a better way to go. But I realize that is not the subject matter of this thread. On

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

This Loop2 packet disc has, I believed solved my issue. I was using the loop1 packet, even though my console and it's firmware version does support it. I had been using a VERY old version of weewx up until a couple of months ago when I upgraded and put it on a raspberry pi. So far so good,

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Just to clarify, the LOOP2 packet actually includes all three pressures. So if using loop_request = 2 you will get all three pressures from the console in both loop packets and archive records. Nothing will be calculated. The combined hardware/software archive record issue occurs when using

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Not at all. If you blindly set loop_request = 3 then yes your archive record pressure values (as well as some other obs) may end up being a combined hardware/software value. If you read the loop_request stanza it warns you of this and points out the solution. Gary On Wednesday, 13 January

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

It is probably not much of an issue for you at 364 ft of elevation. But stations at greater elevation like the OP at 4400 ft, that do not receive station pressure data from the console will have a more difficult time properly calculating Altimeter pressure since their consoles only provide sea

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Thanks for the summary (it helps), but I'm missing what actual problem this thread is trying to solve. I've had my VP2 since jan'2009 and have ancient firmware on it. I've run weewx for many years with the Vantage driver, doing nothing special to tweak what it generates nor how. I've fed

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

For anyone confused or not able to follow alonghere is the premise of what Gary and I are discussing. Davis LOOP1 data in terms of barometric pressure only sends corrected sea level pressure. Davis LOOP2 data in terms of barometric pressure only sends station pressure (atmospheric

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Well then this seems to be a big limitation for any Davis station that is not using a WLL! Seems like the WLL is a better solution than other loggers and then ending up with a mess of combined calculated and received values for barometric pressure. Unless it is possible to set things so that

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

I have no WLL experience so short answer is I don’t know. But the loop_request setting is a vantage driver setting, as far as I know you need to use a different driver for WLL. Also, there are a number of WLL drivers; looking at one just now I see it appears to emit pressure and altimeter,

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Gary, That is very interesting and possibly important information. Is what you mention dependent on the type of logger used? Meaning is the data switching (LOOP1 / LOOP2) still an issue with the WLL? On Tuesday, January 12, 2021 at 4:14:00 PM UTC-5 gjr80 wrote: > Assuming can be a dangerous

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Assuming can be a dangerous business! If you have not specified anything for loop_request then you will be using LOOP1 only (the default), whether that is the ‘best available format’ depends on your circumstances I guess. Should you happen to specify loop_request = 3 in order to get the best of

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

If you want better calibration precision than the 0.01 inHg you are getting now then switch to hPa (which are the same as millibar). When you calibrate using hPa you can be more precise. But you don't have to permanently switch to seeing hPa, rather this is just an exercise during calibration

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

* On 2021 12 Jan 13:40 -0600, galfert wrote: > Stop saying that the airport is at the same elevation or at different > elevation from you. That is extraneous and irrelevant information. I am merely attempting to be factual as I'll admit to being still a bit confused as to what unit the METAR

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Stop saying that the airport is at the same elevation or at different elevation from you. That is extraneous and irrelevant information. Use this sight to find out your elevation: https://www.freemaptools.com/elevation-finder.htm If you don't have the latest firmware then you may not have Loop2

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

* On 2021 11 Jan 16:09 -0600, Tom Keffer wrote: > If you're concerned about the distance to the airport, you can take your > console to the airport --- it's battery powered. Well, that seems like a novel idea! :-) Wouldn't doing so take a few hours? The Davis literature appears to suggest so.

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

If you're concerned about the distance to the airport, you can take your console to the airport --- it's battery powered. In addition to my Vantage, I have a precision barometer that I use for sailing (±0.25 hPa precision). I've calibrated it against the Portland airport, which is very close to

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

* On 2021 10 Jan 20:02 -0600, Tom Keffer wrote: > The note *Derived variables > * > from > Davis has a pretty good discussion of this. Thanks, Tom. I have a Vantage Pro2 and I see this: $

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

All that will get you is an average of crap altitude!  Any agreement between GPS altitude and true elevation is merely a coincidence. Regards, Garry Lockyer C: +1.250.689.0686 E: ga...@lockyer.ca > On Jan 10, 2021, at 18:33, Brent Dowell wrote: > > Yeah, The first time I got the altitude

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Yeah, The first time I got the altitude I used a garmin gps and left it running to average the altitude For a while. Guess I'm just going to learn to deal with it. On Sunday, January 10, 2021 at 6:24:56 PM UTC-8 garrya...@gmail.com wrote: > And this document explains why GPS altitude sucks (to

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

And this document explains why GPS altitude sucks (to be polite!): http://www.montereysar.org/SARMembersDocs/UsingaGarminGPSwithPaperLandMaps_Manual.pdf Regards, Garry Lockyer C: +1.250.689.0686 E: ga...@lockyer.ca > On Jan 10, 2021, at 18:05, Brent Dowell wrote: > >  > Thanks again! > >>

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Thanks again! On Sunday, January 10, 2021 at 6:02:00 PM UTC-8 tke...@gmail.com wrote: > The note *Derived variables > * > from > Davis has a pretty good discussion of this. > > On Sun,

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

The note *Derived variables * from Davis has a pretty good discussion of this. On Sun, Jan 10, 2021 at 5:38 PM Brent Dowell wrote: > Correct Altitude is entered. > > I'm getting an average

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

Correct Altitude is entered. I'm getting an average error of 3.5 millibars. My altitude is pretty close to the local airport, and I used a fairly calm day to adjust my barometer to match that. Our altitude is also relatively close, i.e. the airport is 4403ft and I'm at 4410. Althought that

Re: [weewx-user] Question on Weewx, Vantage Vue, and CWOP

I'm assuming: 1. That you have a Vantage console; 2. That you are using regular LOOP packets, not the newer LOOP2 packets; 3. That you are using hardware record generation. If all this is true, then what's happening is that WeeWX is downloading altitude and temperature corrected barometric data

[weewx-user] Question on Weewx, Vantage Vue, and CWOP

I've been chasing my tail a bit trying to get my data that I upload to CWOP to pass the madis checks, which, from what I've read is a bit problematic. My question though is what should I have my console set as far as altitude and barometer reduction. Right now I have it set for my correct