How rain works is in the documentation. Be sure to read the section *Porting to new hardware <http://weewx.com/docs/customizing.htm#porting>* in the Customizing Guide.
Regarding the last paragraph in your note: if I understand you correctly, don't worry about emitting archive records. Just emit a LOOP packet (or file) every few seconds (sounds like 10 seconds in your case). Let WeeWX compile them into archive records. Or, perhaps I don't understand what you're doing. -tk On Mon, Sep 17, 2018 at 7:15 AM Jonis Maurin Ceará <[email protected]> wrote: > That's why I'm asking about calculation, because i just don't know how > weewx works (until your answer). > > I'm using FileParser driver with pool interval of 10 seconds. My "script" > grooveweather also generate this text file every 10 seconds and rain > information is cummulative from the entire day (I'm guessing, looking for > the code). You said that weewx doesn't use rain value for 60 > minutes......but using this data (rain in the last 60 minuts, from my > driver) in rainRate looks right on report page (again, I'm not sure because > I can't test/measure). > > My archive time is set to 300 seconds (5 minutes). Since my 'driver' > generates report every 10 second's, I can't see how I would out rain for > the last 5 minutes and then reset this data. The problem is not coding, but > the syncronization between '5 minutes' from weewx archive and '5 minutes' > in driver code :( > > > > Em segunda-feira, 17 de setembro de 2018 09:26:24 UTC-3, Jonis Maurin > Ceará escreveu: >> >> Hi. >> Is possible to automatically calculate rain total?! >> >> I'm using generic cheap instruments (sold on ebay) with GrooveWeather Pi >> ( https://github.com/switchdoclabs/SDL_Pi_GroveWeatherPi ). >> I'm writing values to text file and reading in weewx using file driver >> (customized). >> >> Rain rate looks working fine: >> f.write('rainRate=' + str((rain60Minutes/25.4)) + '\n') >> >> The value looks correct (about 1.2mm/hour for now). But "Rain today" is >> always 0. >> If I populate 'rain' field with total rain (calculated by >> GrooveWeatherPi), it's a bigger value. >> >> Weewx page: >> Rain Rate 0.2 mm/hr >> Rain Today 8.0 mm >> >> Data (written by grooveweathersensor): >> rainRate=0.011 >> rain=0.0165 >> >> >> This doesn't look right :/ >> Weewx unit are set to US >> >> More config: >> [[StandardReport]] >> # See the customizing guide to change the units, plot types and >> line >> # colors, modify the fonts, display additional sensor data, and >> other >> # customizations. Many of those changes can be made here by >> overriding >> # parameters, or by modifying templates within the skin itself. >> >> # The StandardReport uses the 'Standard' skin, which contains the >> # images, templates and plots for the report. >> skin = Seasons >> [[[Units]]] >> [[[[Groups]]]] >> group_altitude = meter >> group_speed2 = meter_per_second2 >> group_pressure = mbar >> group_rain = mm >> group_rainrate = mm_per_hour >> group_temperature = degree_C >> group_degree_day = degree_C_day >> group_speed = meter_per_second >> >> >> >> [StdWXCalculate] >> >> [[Calculations]] >> # Derived quantities are calculated by this service. Possible >> values are: >> # hardware - use the value provided by hardware >> # software - use the value calculated by weewx >> # prefer_hardware - use value provide by hardware if available, >> # otherwise use value calculated by weewx >> >> pressure = prefer_hardware >> barometer = prefer_hardware >> altimeter = prefer_hardware >> windchill = prefer_hardware >> heatindex = prefer_hardware >> dewpoint = prefer_hardware >> inDewpoint = prefer_hardware >> rainRate = prefer_hardware >> >> >> -- > 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 [email protected]. > 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 [email protected]. For more options, visit https://groups.google.com/d/optout.
