Author Topic: Opinions on WeatherFlow smart weather stations?  (Read 10864 times)

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Offline arrowspace90

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #125 on: October 18, 2019, 12:38:56 PM »
WF says they can help you calibrate your haptic rain sensor if you are able to place a manual gauge next to it for comparisons.

Offline doubleohwhatever

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #126 on: October 18, 2019, 12:48:49 PM »
WF says they can help you calibrate your haptic rain sensor if you are able to place a manual gauge next to it for comparisons.
Are they not calibrated at the factory?

Offline weather34

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #127 on: October 18, 2019, 01:16:44 PM »
in reference to rain nope whole rain thing is a mess , is it a total lack of understanding? also uv is questionable and humidty can be questionable if you look at vreihen post a few back the humidity flat lines or maxes out at 90% whilst his vp2 fluctuates between 90 and 93% on that particular day . personally all this AI talk or Continuous learning is over my head sounds more like silicon valley tech talk. so called continuous CL has never worked on any of the units ive had , especially if you have a reboot for whatever reason earlier this month I saw uv8 on a non cloudy quite a way off for this time of year 5-6 is possible beginning of october when directly overhead. so i couldnít attribute it to cloud reflection..

so lets see how this new pretty looking thing pans out who knows may be it will put us skeptics to rest.. :grin:
"The internet a place where people who you never met or have known make it their mission to disagree with everything you say or do , call it socially inept noise"..

https://weather34.com/homeweatherstation/meteobridge-mb-smart.html

Offline arrowspace90

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #128 on: October 18, 2019, 01:56:31 PM »
I think the Tempest has few changes if any to the rain sensor or the wind sensor.  It's mostly the inclusion of the "Air" stuff into the "Sky" unit.  Then they will have some AI forecasting software, but that doesn't affect any rain sensing.

I'm not in the know about how the haptic sensing is supposed to work.  I simply noted on their community forum that for a person complaining that his rain totals were wrong, they said they could adjust, "calibrate" it further and especially if he could put a manual gauge next to it so they have a better idea about where the readings need to be.

I have a manual gauge just a foot from my Sky, and I may end up taking them up on the manual calibration.  But so far, the Rain Check did subtract off the r
"rain" that was recorded when I moved the Sky closer by 2 feet to the manual gauge.  We haven't had much rain at all here in north central Texas for 6 weeks for me to make any other rain comparisons.

I just ignore the low wind readings on my sky because it's only at 6 or 7 feet above the ground and between houses.  I can just let it go because I have an annemometer (Davis Pro II) up on the roof at 30 feet, and it gets LOTS of wind.

Offline arrowspace90

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #129 on: October 18, 2019, 02:01:55 PM »
WF says they can help you calibrate your haptic rain sensor if you are able to place a manual gauge next to it for comparisons.
Are they not calibrated at the factory?
They're supposedly calibrated by CL, "continuous learning", and they claim that the haptics will "learn" from each new rainfall, with the input from "Rain Check" to get better and more accurate readings.  I'm merely repeating what I read from their website.

Offline weather34

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #130 on: October 18, 2019, 02:07:32 PM »
as i said its gone over my head , a manual gauge so put that into perspective how does the sky get its continuous data or is it just calibrated after an event then  you pass it on .

haptic sensor look up piezoelectric because thats the sensor type it measures vibrations or sound ive yet to fathem which one . i have used an identical component I used on a acoustic guitar diy pickup.. took me a while to realize why the sensor looked so familiar when i first took a sky unit apart. i guess its what goes on after sensor picks up a vibration and attempts converts it to a measure but im wondering or guessing if there is some what if scenarios in the formula.

"The internet a place where people who you never met or have known make it their mission to disagree with everything you say or do , call it socially inept noise"..

https://weather34.com/homeweatherstation/meteobridge-mb-smart.html

Offline arrowspace90

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #131 on: October 25, 2019, 10:16:29 AM »
We got a big rain event in the DFW last night and I was ready with my rooftop mounted Davis Pro bucket tipper (up at 30 feet) and a Stratus manual gauge down at 6 feet with the Sky 1 foot from it.

The rain was very heavy for some time, and as long as that was the case, the Sky was doing a great job, right in line with both the Stratus and the roof gauge. In fact, Sky got out to a .10 in lead over the too high Davis, as one might expect.

But as the rain intensity settled to a slower, steady precip, the Sky started to lag. I watched it give back itís .10 and eventually more. This morning, a check of the manual gauge confirmed what I saw.
Roof, 2.47 inches Stratus manual gauge, 2.60 inches Sky, 1.98.

Just now, I see that Rain Check raised the Sky to 2.16 in. Better, but still significantly below the 2.60 inches of the Stratus 1 foot from it.

Offline doubleohwhatever

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #132 on: October 25, 2019, 04:45:15 PM »
The rain was very heavy for some time, and as long as that was the case, the Sky was doing a great job
...
But as the rain intensity settled to a slower, steady precip, the Sky started to lag.

My Sky unit exhibited the same behavior. It was fairly accurate during heavy downpours but anything lighter and the rain total was always lower than what it should have been.

Interestingly, I have a Vaisala WXT536 which uses a very similar (if not identical) rain sensor technology. It behaves the same. Works okay during heavy rain but under-reports during lighter to moderate rain.

WeatherFlow has pointed to unwanted vibration as a reason for inaccurate rain readings but the WXT536 is built much more firmly (with a steel sensor plate) and it still exhibits the same behavior.

After trialing both of these units (Sky and WXT536) I honestly think the haptic technology just isn't suited for rain detection. This is what has me scratching my head a bit with the Tempest. Either they've vastly improved the haptic technology or they're a bit crazy for sticking with the same flawed rain sensor tech. Time will tell but I'm not going to be at the front of the line to try it out this time around.

« Last Edit: October 25, 2019, 04:50:42 PM by doubleohwhatever »

Offline nincehelser

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #133 on: October 25, 2019, 05:07:26 PM »
Just now, I see that Rain Check raised the Sky to 2.16 in. Better, but still significantly below the 2.60 inches of the Stratus 1 foot from it.

Here in Round Rock my Sky read about 0.2" too high.  Rain Check brought it down to 0.1" too high.  (It was 1.57" according to my Atlas)

I wish Rain Check would note how much it corrected to judge the Sky's performance.  Is there anywhere you can see that?

Offline tweatherman

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #134 on: November 26, 2019, 07:57:07 PM »
There's an ASOS (KMGJ) across town to the west, but it is in an open area with crazy wind exposure and I'm lucky to see 29 MPH peak gusts.  There's also KSWF about the same distance to the east.

WeatherFlow just added the barometer to their continuous learning (CL) algorithm in the past week or so, and I just peeked at the ASOS to see that I was reading 30.086 in the WF app when the ASOS was reading 30.07.  (weewx was reading 30.06, because I had a pre-CL adjustment hard-coded into weewx.  I have made no attempt to calibrate the Davis barometer.

https://smartweather.weatherflow.com/share/910/grid

One can never have too many weather stations...and they all basically read the same thing most of the time:





I'm even more curious than you are about if the ultrasonic is going to drop out in 20+ MPH winds and moderate/heavy rain.....
I've been watching several of these stations with in 20 mile radius of my house and seem to be with in a degree for temp., hum. with in 3%, barometric Pres. usually a little lower .01-.02 inhg. rain seemed to be with in .02 and wind direction pretty close. Anyone have any idea on what the new Tempst stations will sell for when released?

Thanks,
twetherman

Offline vreihen

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Re: Opinions on WeatherFlow smart weather stations?
« Reply #135 on: November 27, 2019, 07:58:27 AM »
Anyone have any idea on what the new Tempst stations will sell for when released?

From the Kickstarter campaign "Save $X off retail price" discounts, I calculate:

Base kit w/WiFi Hub: $329

Storm/Fire kit w/cellular Hub and 7-day Hub backup battery: $399

Remote/Autonomous kit w/cellular Hub, weatherproof solar enclosure: $449

If you want in for less, it appears that there were four cancellations on the $229 deal on Kickstarter that are again up for grabs.

FWIW, I am in on the Kickstarter full Remote/Autonomous kit, which I plan to install on some wooded mountaintop property that my family owns because the place has interesting weather.....
WU Gold Stars for everyone! :lol: