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Weather Web Resources / Re: NOAA WEATHER RADIO
« Last post by Cutty Sark Sailor on Today at 10:21:23 PM »
Guys, F.Y.I, on Win 7 there is no tick box to connect on start-up in versions 0.1.15 or 0.1.16.  At least not on my system.  There is in version 0.1.12.  Very befuddling indeed  ](*,)

If you mean :"Start when Windows Starts"... true... you have to add BUTT to the start up folder manually....
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Davis Instruments Weather Stations / Re: Barani pro passive shield
« Last post by jgentry on Today at 10:12:51 PM »
Thanks to Jerry & Randy, I pulled the trigger and bought the pro shield. I guess Iím now a part of the club. Lol
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Can you tell us if with the new website what the optimal minute upload interval should be?

The reason I ask this is because with the current website the graphs don't have very high resolution. I've tested uploading at 1 minute, 5 minute, and 10 minute and 20 minute. What I noticed is that with anything lower than 10 minutes the graphs are just so compact and and they are not really legible (especially the Wind graph). They look like crayon scribble on a page. So I currently upload at 10 minute intervals to have the most amount of detail with the current graphs.

.....BUT.....If the new website has better resolution graphs then maybe I may be willing to switch now to a higher interval (maybe 5 minutes...or maybe even 1 minute) and then the data will be there and ready to take advantage of the new website when it is ready later this year.....so I'll be then able to look at historical data and see the added detail.

I never understood why people uploaded with such high intervals with the current graphs.....I mean unless they really like looking at the number charts.....I prefer graphs.
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Davis Instruments Weather Stations / Re: Barani pro passive shield
« Last post by hwcorder on Today at 09:12:46 PM »
I would like to see more test showing the same results. Like others I a little dubious over their conclusion that the Davis fars runs too cool in light wind to calm conditions. It's difficult to get a thermometer to read on the cool side during the day.
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Yeah!  After 4 factory resets it finally started working. Thanks
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weewx Software / Re: Adding New Temperatures
« Last post by gjr80 on Today at 08:57:50 PM »
Thanks, I was able to add extraHumid3 and see that working.

what was odd, was that I assumed I'd also need to assign to a group, so I added

Code: [Select]
import weewx.units
weewx.units.obs_group_dict['extraHumid3'] = 'group_percent'

However, even before I did that, the values showed as % in my reports.

How did it know to do that? and do I therefore not need the group definitions above?

There are a couple of processes at play here that are not apparent to the user. Firstly, there is the creation of the archive record and its processing/interpretation by WeeWX. Archive records are either generated by the station and passed to WeeWX (ie hardware record generation, Davis stations being a prime example) or WeeWX generates the archive record based on loop data (loop data being the frequent point-in-time data being received from the station). The latter is known as software record generation. In either case if a given field is provided by the station/driver it will appear in the archive record being processed by WeeWX. Now WeeWX knows how to interpret a number of fields, outTemp being an obvious and common one. If you have a look at bin/weewx/units.py and look at the obs_group_dict dictionary (circa line 57) you will see all of the obs WeeWX knows about and the observation groups they belong to. You will see extraHumidity3 is included. Why, well extraHumidity3 (and a few others) are used by some Davis stations so it made sense I guess to include them(the vantage driver was the first written and the Davis protocol is freely available).

The second process that goes on is that of saving data to the database. Simply put WeeWX will only save those obs that are common to the archive record and the database schema being used. WeeWX defaults to using the wview schema, you can find the wview schema in bin/schemas/wview.py. You will see in the wview schema there is only extraHumidity1 and extraHumidity2; no extraHumidity3. Why, largely because when WeeWX was developed the decision was made to use the wview schema as the default schema and the wview schema does not include extraHumidity3. So in the case of extraHumidity3 even though we have extraHumidity3 in the archive record and WeeWX knows how to interpret it, it will not be saved to the database and hence we can't plot it or display any historical extraHumidity3 stats, you are limited to only using/displaying the current value.

As for the final part of your question, do I need the definition. Well no you don't as WeeWX is already aware of which observation group extraHumidity3 belongs to. Does the extra definition hurt, no it doesn't and there is no real processing penalty as the definition is a statement that is processed once when WeeWX starts.

Gary
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Davis Instruments Weather Stations / Re: Barani pro passive shield
« Last post by jerryg on Today at 08:52:16 PM »
I wonder how they determined it was the wind and not some other anomaly. The wind speed varies quite a bit so like you said i would think it would be in spurts and not a lot at that.
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Davis Instruments Weather Stations / Re: Barani pro passive shield
« Last post by CW2274 on Today at 08:35:47 PM »
Yes the chamber is the same but at the bottom where the air enters it is restricted by that disk shaped piece that i think shields the chamber from reflected heat and forms the vintura , spelled wrong, effect. That was how it was described in the patent application.
Yes, see what you're saying.
With that, and my common sense (for what it's worth), I am completely unconvinced that wind causes a high bias temp, certainly for any kind of continuity.
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Weather Web Resources / Re: NOAA WEATHER RADIO
« Last post by tmabell on Today at 08:29:42 PM »
Guys, F.Y.I, on Win 7 there is no tick box to connect on start-up in versions 0.1.15 or 0.1.16.  At least not on my system.  There is in version 0.1.12.  Very befuddling indeed  ](*,)
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Sorry, it is a 2902A and pressing and holding the wnd and pressure buttons for 5 seconds or more does not get the WiFi symbol to flash/come on at all. It is hooked up to AC power.  I had it working before and after a factory reset is when I got this problem.
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