Author Topic: Ecowitt - some thoughts  (Read 4698 times)

WCDev

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Ecowitt - some thoughts
« on: January 25, 2026, 04:42:36 PM »
WetherCat 4 (currently in development, see https://athena.trixology.com/index.php?topic=3671.0) includes support for the range of Fine Offset weather gateways and consoles, marketed under a variety of brands, perhaps the biggest of which is Ecowitt (https://www.ecowitt.com/shop/homePage).

The last time I dealt with FO was coding up their USB based stations for WeatherCat (see https://wiki.trixology.com/index.php?title=Fine_Offset) and fine tuning the USB timings to try to avoid locking the thing up - not an enjoyable experience.

Time moves on, and they've now moved onto IP based gateways and consoles. These are provided at relatively reasonable prices and reasonable quality levels. As such they appear to be pretty popular.

These newer 'stations' are simpler to talk to, but the protocols are still just slightly on the wrong side of what you might call 'good professional software design', i.e. in a lot of cases completely bonkers (see https://athena.trixology.com/index.php?topic=3672.msg35073;topicseen#msg35073 for an example), with multiple API's available e.g binary based, some json and historical access via .csv files (and WeatherCat uses all to communicate to these stations, because you have to :) ).

But having said that, they seem to be remarkably reliable and perform well. I've been running one in parallel with a fan aspirated Davis set up and the readings are (mostly) comparable (after a little tuning). Now granted, it's mid-winter here in the UK and I only have a few weeks of running under my belt, but so far, I'm suitably impressed! Right now, I like 'em.

A few pics are attached to this post. You'll see one with two internal temp/hum sensors side by side and indeed they are pretty close to each other, which impressed me. You'll also see the main sensor array mounted on a pole. This is a WS90 which has ultrasonic wind and haptic rain - it also has a small, in-built solar panel to keep a 'supercap'* suitably charged, which even in the depths of a central England winter is doing a sterling job of keeping it running (which is just as well - we fitted that pole and the station in very cold temperatures and I really don't want to go back up there to change the batteries :) )

The rain from the haptic sensor is 'interesting' - it does detect very fine drizzle (that the Davis, with its 'traditional' tipping bucket, does not detect) but it tends to over-read by large amounts. The 'gain' of the piezo rain sensor (as it's called) can be adjusted, and this has been going on for a few weeks now, but it's still way off compared to the Davis bucket. You do have the option of adding a more 'normal' tipping bucket to the system (a WH40), but I haven't (yet) and it'll be interesting to see if I can get it and the Davis roughly agreeing on rain amounts :)

They also do a variety of other interesting sensors - particulate matter for example (I procured a WH46D for testing with WeatherCat 4) along with a lighting sensor (which I do not have) and laser depth sensors (snow), again I don't have this either**, all at reasonable prices. I can't make a comment as to the reliability of these somewhat more interesting sensors, but the fact that they are available for the system is impressive!

--

*A large capacitor which can act as a power supply for the unit - indeed it's the main power supply (two AA batteries are fitted for backup).
**Anyone with these, please go test with WeatherCat 4 :)

elagache

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Weather station for your RV? (Re: Ecowitt - some thoughts)
« Reply #1 on: January 26, 2026, 12:33:04 AM »
Dear Stu and WeatherCat adventurers,

I am hopelessly behind (La Routine Habituelle Quoi)  However, I promise to provide an update on my recent Airstream purchase (and ongoing restoration) as soon as I can pry free some time.

However, I have a weather station for so long that the itch of somehow strapping a station to the trailer when camped is basically irresistible.  I've been thinking about the Ecowitt stations for a while because of the modest cost.  This application doesn't require high precision so it seemed like a good match.

Just doing some quick web surfing, I spot this station:

https://www.ecowitt.com/shop/goodsDetail/251#

The instrument cluster is this:

https://www.ecowitt.com/shop/goodsDetail/350#

It's weight is a modest 498 grams  (17.5 ounces or a bit over a pound.)

Thanks to Amazon, the price isn't too bad:

https://a.co/d/783hKUY

Securing it to an Airstream trailer is a problem, but there are suction cup mounts for flags.  Here is one called Flag Pole Buddy:

https://flagpolebuddy.com/products/ols/products/starlink-for-airstream-custom-suction-cup-mounting

These are designed for the Space-X StarLink, but obviously they would work for a weather station.

Now that the forum is reopened, what do WeatherCatters think?

A curious mind would like to know!

Edouard  :)

   

elagache

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Da' $40 coupon made me dood it!! (Re: Ecowitt - some thoughts)
« Reply #2 on: March 13, 2026, 10:37:51 PM »
Dear Stu and WeatherCat adventurers,

Yes I know, I should provide an update on my "mature Airstream."  I will try to do so soon.  Yesterday was something of a breakthrough because I discovered some extremely strong Neodymium rare-earth magnets that allow for the attachment of items through the aluminum skin of the trailer.  I just bought this magnets that claim to be able to lift 100 lbs.!!

https://a.co/d/05epwb8a

So the time has come to see if I can secure a weather station to my trailer when not in motion.  Of course Amazon teased me with so many different stations that I could have left me bewildered.  However, "fortunately" for me, I had left the link to the correct station this thread.  A quick check and Amazon had a $40 off coupon!!   [bounce]

So my very own ECOWITT Wittboy Pro Weather Station HP2564  is arriving on Sunday.  I'm going to try to run WeatherCat 4.x on the laptop I use to tune my trusty wagon so that I don't have to risk my Mac Mini which kind of runs the house.

Stay tuned!! . . . . . 

Edouard



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Re: Ecowitt - some thoughts
« Reply #3 on: March 14, 2026, 09:08:32 AM »
Looking at the manual for that one Edouard, I do not see that it has a local API which WeatherCat could access (happy to be corrected if someone has more 'Ecowitt' knowledge :) )

A quick search brings up https://meshka.eu/Ecowitt/dokuwiki/doku.php?id=start#apis_application_programming_interfaces - there's a list of what does and doesn't have a local API there. It appears it doesn't.

One other observation - you're going to need wifi in your van so that both WeatherCat and the Ecowitt are on the same network - something to consider.

[Edit: Thinking about what you're doing, I'd be inclined to throw a GW3000 into the mix - these can be picked up on places like Amazon at reasonable prices. The GW-3000 does have the local API and is fine with WeatherCat. Fit it with an 8GB SDCard and get the WS90 registered with that, then when you open your laptop, WeatherCat will pull down the historical data from the GW3000 then resume real-time operation.]

elagache

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Dear Stu and Weather

. . .
So my very own ECOWITT Wittboy Pro Weather Station HP2564  is arriving on Sunday.  I'm going to try to run WeatherCat 4.x on the laptop I use to tune my trusty wagon so that I don't have to risk my Mac Mini which kind of runs the house.
. . . .

As promised the station arrived just before the start of the work week and it is a cute little machine.  Here is a close-up of the sensor array:



Here is the array on the mast which Biquette brought home (another story to be reported later . . . . )



Here is a comparison of the console with the old-reliable Davis Vantage Pro-2 console:



In comparison the Davis console definitely looks a bit out of date:



Looking at the manual for that one Edouard, I do not see that it has a local API which WeatherCat could access (happy to be corrected if someone has more 'Ecowitt' knowledge :) )

A quick search brings up https://meshka.eu/Ecowitt/dokuwiki/doku.php?id=start#apis_application_programming_interfaces - there's a list of what does and doesn't have a local API there. It appears it doesn't.

 [wink] . . . . Bummer dude!  Is this one of those - you've gotta read da' instructions sorta' things? . . . .  lol(1)

[Edit: Thinking about what you're doing, I'd be inclined to throw a GW3000 into the mix - these can be picked up on places like Amazon at reasonable prices. The GW-3000 does have the local API and is fine with WeatherCat. Fit it with an 8GB SDCard and get the WS90 registered with that, then when you open your laptop, WeatherCat will pull down the historical data from the GW3000 then resume real-time operation.]

 [biggrin] . . . . Alright, Alright . . . . Since I got such a good deal on the console, why not add the GW3000 to the mix!  . . .  [biggrin]

These little hubs are very cute in their own right:



They transmit directly to an iOS App, so you could install one of these GW3000 hubs and save some of that precious RV real estate and lookup either a quick update with your phone or tablet or get more detailed information using WeatherCat.

Speaking of which:



So even on an old and out-of-date MacBook running Mojave, WeatherCat 4.0 Beta is just purring along!   [cat]

One other observation - you're going to need wifi in your van so that both WeatherCat and the Ecowitt are on the same network - something to consider.

Actually this problem is already solved.  I was strongly urged to go with SpaceX Starlink.  I already have the Starlink mini antenna so that's my venue for Internet and it includes it's own IP-router and Wi-Fi.

What I'm going to do with this weather station is more murky.  My worry was that I would end up RVing in extreme conditions and wanted to know how cold things got in case pipes were in peril of freezing - or something similar.

However, this journey is just started so - stay tuned!

Edouard  :) 

wurzelmac

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Re: Ecowitt - some thoughts
« Reply #5 on: March 27, 2026, 12:21:24 PM »
Here we go, Edouard:

All this sensors and the Console are very affordable and what I spent for all those sensors is less than the half I spent for my Davis equipment with only two extra sensors.
Reinhard


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So even on an old and out-of-date MacBook running Mojave, WeatherCat 4.0 Beta is just purring along!   [cat]

 ThU32:-)

elagache

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Indeed - very interesting!! (Re: Ecowitt - some thoughts)
« Reply #7 on: March 28, 2026, 09:18:17 PM »
Dear Reinhard, Stu, and WeatherCatters with roadtrip inclinations . . .

. . . .
All this sensors and the Console are very affordable and what I spent for all those sensors is less than the half I spent for my Davis equipment with only two extra sensors.

Very Interesting!!

 [wink] . . . . There is just one thing I don't get.  Just how to you install the soil sensors on a travel trailer?  Do you mount them on the outside of the tires?  Must be awful rough trying to get those sensors to perpetrate the asphalt!!!  . . .  lol(1)

Seriously, I haven't bought it yet, but one sensor that is very appealing is a particulate pollution sensor.  During one amateur astronomy camping trip when I was living in San Diego, we had a plume of smoke rise up over our camp ground.  However, it was difficult to judge how far away the smoke was.  Ironically, I don't have the same need for such a sensor at home because so many other people in the area have one!   [biggrin]  However, when you are camping you can't rely on a neighbor!

Stay tuned!!

Edouard