HEY! It works!
Thank you very much for the extension. It has been running fine so far on
my 2004-vintage Vantage Pro ("model_type = 1").
NB: For certain distros, like the one running my minimalist RPi, the
extension is copied to /usr/share/weewx/user directory.
On Saturday, November 2, 2019 at 8:52:12 PM UTC, Pat wrote:
>
> I wasn't sure which way to tackle this - in the end I decided that the
> console should track rxCheckPercent, and it would be easier to have weewx
> calculate wind direction. This is because different models of Vantage have
> different ways to calculate the rxCheckPercent. Seemed too complicated to
> replicate.
>
> Thanks to Tom's help with this one, this was easier than I thought. When
> the archive runs, weewx downloads the archive off the console. Then this
> extension deletes the wind data from that archive. By way of how weewx
> works, the weewx wind direction gets re-inserted into the archive from the
> accumulator. Easier than I thought!
>
> If weewx is offline for a certain period of time, it will download the
> archive off the console as a catchup. In this case then the windDir from
> the console will be used. Once a loop is established then the extension
> will use weewx's method of calculating windDir.
>
> I did add a quick check in the extension to make sure the [Station] -->
> station_type = Vantage because in my testing I was bouncing back and
> forth between drivers. This also makes sure you're not deleting wind
> direction from another driver. If you want to run this on a system that
> isn't running Vantage, then you can remove the check within the extension
> easily.
>
> I've been testing it for a few days and it seems pretty good.
>
>
> 1. Have a backup of anything and everything. Your database, your weewx
> folder, your extensions, everything! I'm don't want to be responsible if
> something goes sideways.
> 2. Add the attached extension to your bin/user folder.
> 3. Set your [StdArchive] --> record_generation setting back to hardware
> 4. Update the data_services setting here: [Engine] --> [[Services]]
> --> data_services = user.deleteVantageWindDir.DeleteWindDir
> 5. Restart weewx
>
>
>
>
> On Sunday, October 27, 2019 at 6:30:55 PM UTC-4, Pat wrote:
>>
>> I recently picked up a 2nd hand Weatherlink IP for my Davis VP2 console
>> and have been running it on a test weewx instance. I'm now facing this same
>> challenge where I don't like the way Davis archives wind direction, but I
>> lose rxCheckPercent when switching to software record generation.
>>
>> I agree with you that it would be nice to be able to choose where each
>> datum comes from (like windDir = [hardware|software|prefer_hardware]),
>> but since that's not possible I'll look into forking the vantage driver and
>> adding in the rxCheckPercent method from the Meteostick driver and see if
>> that helps bridge the gap in this specific use case.
>>
>>
>> On Wednesday, September 25, 2019 at 10:02:27 PM UTC-4, Thomas Keffer
>> wrote:
>>>
>>> Looking through the Meteostick driver, it seems to emit rxCheckPercent
>>> data on a running basis in its LOOP packets (not archive packets). These
>>> would then get stored in the WeeWX accumulators, then extracted as part of
>>> the software record generation.
>>>
>>> That is certainly a reasonable approach: modify the Vantage driver to
>>> keep track of dropped packets, and emit the results in the LOOP packets.
>>>
>>> I'm not going to do it, but, as always, pull requests are welcome! :-)
>>>
>>> -tk
>>>
>>>
>>>
>>> On Wed, Sep 25, 2019 at 6:49 PM Pat <[email protected]> wrote:
>>>
>>>> I'm not sure how the Davis driver works, but with the Meteostick
>>>> driver it's able to calculate rxCheckPercent
>>>> <https://github.com/matthewwall/weewx-meteostick/blob/master/bin/user/meteostick.py#L404-L413>
>>>>
>>>> based on number of RF packets received over a known interval
>>>> <https://github.com/matthewwall/weewx-meteostick/blob/master/bin/user/meteostick.py#L356-L373>
>>>>
>>>> and doing that math. Since I use the Meteostick driver for my Davis
>>>> station, I'm set to software generation and I get the rxCheckPercent. I
>>>> wonder if there's a way to incorporate this bit of code into a Davis
>>>> driver
>>>> fork?
>>>>
>>>> Could be a large project (which I'm not volunteering for) but thought
>>>> I'd at least mention it and link to the code.
>>>>
>>>>
>>>> On Monday, September 23, 2019 at 5:47:02 PM UTC-4, Thomas Keffer wrote:
>>>>>
>>>>> Sorry, but the value of rxCheckPercent comes only from the console,
>>>>> and then only in archive records (not LOOP packets). If you disable
>>>>> hardware record generation, you lose it.
>>>>>
>>>>> It would be a nice feature to be able to pick and chose where each
>>>>> datum in the archive record comes from, but, unfortunately, that's not
>>>>> the
>>>>> way WeeWX works now.
>>>>>
>>>>> -tk
>>>>>
>>>>> On Mon, Sep 23, 2019 at 9:46 AM Erick Dorsett <[email protected]>
>>>>> wrote:
>>>>>
>>>>>> I recently installed weewx on a Pi to use with my ancient Davis
>>>>>> Vantage Pro. In order to get the winds to report actual degrees instead
>>>>>> of
>>>>>> quantized to the cardinals, I had to set "record_generation = software"
>>>>>> in
>>>>>> the weewx.conf file. However, after I did that, the data point for
>>>>>> signal
>>>>>> quality (rxCheckPercent) is no longer archived in weewx.sdb.
>>>>>>
>>>>>> I use rxCheckPercent data for a bunch of reasons. How do I get it
>>>>>> back?
>>>>>>
>>>>>>
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>>>>>>
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>>>>>> .
>>>>>>
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>>>>
>>>
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