There's two methods for weather adjustments. The "Zimmerman Method" only uses historical data (avg temp and humidity from the previous day, and total precipitation from previous and current days), and scales watering times up and down based on that. The Auto Rain Delay uses forecast data only - it scans the forecast precis for keywords indicating rain, and will delay the watering program entirely for a day if found.
So far I've only implemented the Zimmerman Method, partly because I'm not sure how to get forecast data in to weewx either. :) In my install I'm using the Responsive skin as well, which includes an extension for getting forecasts from the Australian BoM. But that's hardly a general solution. On Wednesday, October 3, 2018 at 7:41:40 AM UTC+10, Pat wrote: > > Sounds interesting! I use OpenSprinkler but never used the watering > calculations - have always wanted to look into it but never have yet. > > I thought part of the watering calculations are done with forecasted rain > for the day. How do you plan to get that forecasting data from weewx? Or > are you using historical data from the rain collected by weewx? > > On Tuesday, October 2, 2018 at 9:17:43 AM UTC-4, Peter Hardy wrote: >> >> A big feature of the OpenSprinkler <https://opensprinkler.com/> irrigation >> controllers is the ability to automatically vary watering levels based on >> weather conditions. By default the firmware does this by polling an >> external web service that calculates the watering adjustment based on data >> gathered from OpenWeatherMap or Weather Underground. >> >> This skin is a partial reimplementation of the OpenSprinkler-Weather >> <https://github.com/OpenSprinkler/OpenSprinkler-Weather> service, >> providing watering adjustments calculated from weeWX data. >> >> There's still some limitations - baseline settings and sensitivity are >> hardcoded in the skin.conf and settings from the controller are ignored. >> Further, the web service provides local timezone offset information that >> I'm unable to include in a static skin as OpenSprinkler doesn't seem to be >> timezone-aware. Finally, I've only properly implemented the "Zimmerman >> method" end point. I'd like to include "Auto Rain Delay" at some point, but >> the standard service relies on forecast data for that, which I'm not sure >> how to get. >> >> I'm still testing the skin out, so not sure I can recommend it to others >> full-time. But if you're interested, it's available from >> https://bitbucket.org/pjhardy/weewx-opensprinkler >> >> Cheers, >> -- >> Peter >> >> -- 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.
