Driver is ready, it's based on mqtt (you may have seen a discussion in the development group)
Currently, I'm playing with an arduino to read wind values out of an inspeed vortex anemometer. For some values like temperature, it's easy, I just measure and send it. But wind bring a lot of questions :-). But you are right, maybe I over analyze. I can only say, it's part of the fun to understand how this is working! I will try this : send windspeed every 3sec and see how weewx deals with. This software is quite impressive :-) Thanks again for supporting Thomas! Le 10 août 2017 11:05 PM, "Thomas Keffer" <tkef...@gmail.com> a écrit : > Generally, if hardware provides something, weewx defers to it. So, if the > hardware emits windGust, then weewx will use that. Otherwise, it gets > calculated in StdWXCalculate. Never in the driver. > > Don't overanalyze this! If your new weather station emits loop packets as > often as it can, and the driver emits those packets without doing any > calculations, weewx will do the right thing. > > Take a look at the general guidelines for writing a device driver > <http://weewx.com/docs/customizing.htm#General_guidelines> in the > Customizing Guide. > > -tk > > On Thu, Aug 10, 2017 at 1:17 PM, Frederic Stuyk <fst...@gmail.com> wrote: > >> With my HW, I can achieve something similar : 1 measurement every 3 >> seconds. >> After thinking about it, it may have no meaning to do the average on >> sensor side because weewx will do the job. >> >> So I can report windspeed every 3sec and weewx will display >> ($current.windSpeed) average over 5minutes (my record interval). >> >> Then I wonder how to deal with gusts. >> >> In case of davis/software records, how is calculated the windgust based >> on the 2.5s packets? >> Is this done inside the driver? >> >> >> >> >> >> Le 10 août 2017 9:14 PM, "Thomas Keffer" <tkef...@gmail.com> a écrit : >> >> It's hardware dependent, but for the Vantage series, there is no windGust >> for the 2.5s LOOP packets, only archive records. If record_generation is >> software, then it is calculated from the 2.5 second LOOP packets. If >> record_generation is hardware, then it is downloaded from the console. >> >> This is fairly typical for most hardware. >> >> The 2.5s sampling interval is unique to the Vantage series. Most weather >> stations emit samples far more slowly. >> >> -tk >> >> On Thu, Aug 10, 2017 at 10:52 AM, Frederic Stuyk <fst...@gmail.com> >> wrote: >> >>> So there is no windgust? Or weewx compute it from the 2.5sec samples? >>> >>> >>> Le 10 août 2017 5:31 PM, "Thomas Keffer" <tkef...@gmail.com> a écrit : >>> >>>> The Vantage driver emits the 2.5s wind speed as type windSpeed, the 10 >>>> minute average as windSpeed10. If software archive record generation >>>> is in effect, the former is averaged and stored in the database under >>>> windSpeed. If hardware archive record generation is in effect, then it >>>> is ignored. In both cases, windSpeed10 is ignored unless you include >>>> it in the schema. >>>> >>>> -tk >>>> >>>> On Wed, Aug 9, 2017 at 2:33 PM, wysiwyg <fst...@gmail.com> wrote: >>>> >>>>> Hello Thomas and thanks for your answer! >>>>> >>>>> I think my definition is not far from some explanation in the wiki >>>>> (but maybe I misexplained or misunderstood). >>>>> Wiki says: >>>>> Rapid fluctuations in the wind speed with a variation of 10 knots or >>>>> more between peaks and lulls. The speed of the gust will be the maximum >>>>> instantaneous wind speed. >>>>> >>>>> 18km/h is 10knots >>>>> >>>>> The definition I founds talked about 10knots between peak and 10minute >>>>> average. This has the advantage to be calculable, while "lulls" is maybe >>>>> harder to evaluate. >>>>> >>>>> Anyway I'm very open to discussion on this. >>>>> >>>>> As you mentioned the davis... What does weewx do with the 2.5sec >>>>> windspeed and the windspeed10? >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> >>>>> -- >>>>> You received this message because you are subscribed to the Google >>>>> Groups "weewx-user" group. >>>>> To unsubscribe from this group and stop receiving emails from it, send >>>>> an email to weewx-user+unsubscr...@googlegroups.com. >>>>> For more options, visit https://groups.google.com/d/optout. >>>>> >>>> >>>> -- >>>> You received this message because you are subscribed to a topic in the >>>> Google Groups "weewx-user" group. >>>> To unsubscribe from this topic, visit https://groups.google.com/d/to >>>> pic/weewx-user/UzXQRmXG4Sk/unsubscribe. >>>> To unsubscribe from this group and all its topics, send an email to >>>> weewx-user+unsubscr...@googlegroups.com. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> -- >>> You received this message because you are subscribed to the Google >>> Groups "weewx-user" group. >>> To unsubscribe from this group and stop receiving emails from it, send >>> an email to weewx-user+unsubscr...@googlegroups.com. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- >> You received this message because you are subscribed to a topic in the >> Google Groups "weewx-user" group. >> To unsubscribe from this topic, visit https://groups.google.com/d/to >> pic/weewx-user/UzXQRmXG4Sk/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> weewx-user+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "weewx-user" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to weewx-user+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > > -- > You received this message because you are subscribed to a topic in the > Google Groups "weewx-user" group. > To unsubscribe from this topic, visit https://groups.google.com/d/ > topic/weewx-user/UzXQRmXG4Sk/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > weewx-user+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "weewx-user" group. 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