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Changes are neat...

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  • Official comment
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    RainMachine Nicholas

    There is an issue with Web UI graphs that shifts time by 1 day in certain cases. This is fixed for the next update.

    As for the running times they depend on Vegetation, Sprinkler Head Type, Sun Exposure with Sprinker Head Type having the biggest impact.

    You can create a custom Sprinkler Head and enter a custom precipitation rate:

    https://support.rainmachine.com/hc/en-us/articles/228001328-Sprinkler-Head-Types

     

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  • Avatar
    Colin Hildinger (Edited )

    Why would it run 165% of scheduled on a cool day in March?  If I program something for 4 minutes, why would it run almost 7?  That's just crazy.

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  • Avatar
    RainMachine Nicholas

    From what I can see in your logs:

    1. You have 2 programs one every 7 days and one every 4 days.

    2. Both programs hit the Minimum Watering Time (not sure how many seconds you set) and postpone the watering to next run date.

    3. The program that watered a lot did that because:

    a) There was a water deficit from a previous run in which Minimum Watering Time setup didn't allow it to run (so it added to this run -12 mm to be replenished)

    b) The date observed from WUnderground weather station increased the EvapoTranspiration (ET) by 7mm and the actual rain by -9mm versus what it was forecast (Higher ET but less RAIN than predicted) this was added to current water cycle.

    I would make sure the Minimum Watering Time is correctly set (the timer is in *seconds* not minutes).

    I believe WUnderground measured data is correct, and the applied Forecast Correction is fine but you can compare this yourself in Web UI > Settings > Weather by looking at NOAA vs Wunderground graphs. If they diverge too much and it wasn't the actual case you should choose another Weather Station or stick with an Airport Station. You can also compare NOAA from QPF tab with WUnderground RAIN tab.

    When you have programs with low frequency, it's expected that the Forecast Correction + Minimum Watering Time to add (or subtract) much more to watering times than a daily/every 2 days program.

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    Colin Hildinger

    Thanks.

    1) actually the once a week is my sprinklers that run Wed/Sat per city restrictions (not important, just FYI)

    2) That's the kicker -- thanks.  I was missing this.  I actually changed that setting the other day because I wasn't happy with short run times that probably don't even saturate my St. Augustine thatch, much less actually get water to the soil.  There's no reason to have a cycle that just wets the thatch unless you have a specific issue (you might want to cool some fescue in the summer here in Dallas, for example).

    The interesting thing for me is the short turn time zones.  They are that way for a reason, but I should be able to customize them now in a way that gets results that I like.  I really like the introduction of the zone by zone customization.

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  • Avatar
    Colin Hildinger

    Edit:
    One thing I'd really like to see on the minimum run times is for them to take into account cycle/soak (or maybe they do?).

    Let's say I have 2 10 minute cycles and a minimum run time of 2.5 minutes.  If the run time drops to 2.5 minutes, it should combine the run times into a single cycle unless that cycle drops below the min run.

    Also, it looks like the recommendations get confused in the interface, I'm guessing based on cycle/soak.  I see 12 minute recommendations some places and 24 minute recommendations others.  I can screenshot, just a sec.

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    Colin Hildinger

    here, same zone, different locations:

    Edit program:


    Edit zone:

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  • Avatar
    RainMachine Nicholas

    The Minimum Watering Time should apply to cycles too. We are also debating if this would be a better setting per zone or general although Auto Cycles & Soak should mitigate this issue.

     

    The suggested times differ in programs if they have a different frequency than daily as Zone EPA Suggested time is a daily suggestion.

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    Colin Hildinger

    auto cycles and soak sounds interesting.  New setting?

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  • Avatar
    RainMachine Nicholas

    Yes it's available with the latest release. On programs you can now set Cycle & Soak to Auto instead of just Custom x cycles with y soak and it will 

    automatically calculate the needed cycles and soak times based on sprinkler head, slope and soil

     

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