Author Topic: Davis AirLink  (Read 199 times)

wx-watch

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Davis AirLink
« on: September 15, 2020, 04:49:29 pm »
Being able to use the Davis AirLink with WeatherCat would be nice.

Any chance??

At the moment I am embedding the link from the Davis WeatherLink site

https://wx-watch.co.uk

elagache

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You have one? Tell us all about it! (Re: Davis AirLink)
« Reply #1 on: September 15, 2020, 10:01:55 pm »
Dear wx-watch and WeatherCat gadget addicts . . . . .


Being able to use the Davis AirLink with WeatherCat would be nice.

Any chance??

 [wink] . . . . . . Absolutely, positively, not a chance! . . . . .  lol(1)

Unless that is you tell us everything you've learned about it and most important of all - how do you like it?

There are a number of us who are definitely tempted by this device!

Returning to your question, there is definitely interest and as reported in this posting:

https://athena.trixology.com/index.php?topic=3180.msg30637;topicseen#msg30637

The Davis design may be easier to integrate with WeatherCat.

Alas in case you haven't kept up with the postings on the WeatherCat forum, our fearless leader Stu (Stuart Ball, WeatherCat developer) is being forced to relocate after many years in his present home.  Obviously that is taking up most if his available free time.  So while there is surge in interest in air quality sensor devices, we all will have to be patient and wait for Stu to actually have some free time once more to work on WeatherCat.

At the moment I am embedding the link from the Davis WeatherLink site

https://wx-watch.co.uk

At least that does look nice on your website.  It definitely isn't the same as integration but it is better than nothing.

Thanks for sharing!  [tup]  You purchase came at a very opportune moment!

Cheers, Edouard  [cheers1]

wx-watch

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Re: Davis AirLink
« Reply #2 on: September 17, 2020, 02:23:10 pm »
Everything about it!

I will do my best!! I have been using WeatherCat for some years now on a Mac Mini connected via a USB data logger to a Vantage Pro 2.
Recently I bought a WeatherLink Live which if you look at my page https://wx-watch.co.uk you can see I have also now been able to play with Cumulus MX and WeeWX running on a Raspberry Pi each linking to the WeatherLink. So when I received an email telling me about the AirLink it was a must!

Small mains powered white box the size of my palm. Can be mounted inside or out but should be in a shady spot because it has no shielding. Mine is on a rather sunny garage wall so regularly reads hotter than the actual temperature.

I had to drill a large hole in the wall as the lead that fits into the unit has a right angle plug at the end. If sited outside it has a cover, inside this is not needed.

It only connects via WiFi. You set it up with the WeatherLink App and it only takes a few moments.

Its output can be viewed in your WeatherLink account via the WeatherLink App or without logging in here

https://www.weatherlink.com/embeddablePage/show/c49cf3c46c1242a597228abbb7cbe234/summary

Anything else please ask

wvdkuil

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Re: Davis AirLink
« Reply #3 on: September 17, 2020, 02:55:17 pm »
Documentation: https://weatherlink.github.io/airlink-local-api/
Local access with http://_ip_nr_/v1/current_conditions  which returns this json string
Quote
{ "data": { "did": "001D0A1000B1", "name": "001D0A1000B1", "ts": 1600350320, "conditions": [{ "lsid": 346392, "data_structure_type": 5, "temp": 77.0, "hum": 36.8, "dew_point": 48.5, "wet_bulb": 55.7, "heat_index": 75.6, "pm_1_last": 2, "pm_2p5_last": 2, "pm_10_last": 3, "pm_1": 2.16, "pm_2p5": 2.28, "pm_2p5_last_1_hour": 1.37, "pm_2p5_last_3_hours": 0.55, "pm_2p5_last_24_hours": 5.56, "pm_2p5_nowcast": 0.91, "pm_10p0": 2.71, "pm_10p0_last_1_hour": 2.25, "pm_10p0_last_3_hours": 1.45, "pm_10p0_last_24_hours": 7.09, "pm_10p0_nowcast": 1.89, "last_report_time": 1600350320, "pct_pm_data_last_1_hour": 100, "pct_pm_data_last_3_hours": 100, "pct_pm_data_nowcast": 100, "pct_pm_data_last_24_hours": 100 }] }, "error": null }
Easier to read version of  the data items
Code: [Select]
    [aqi_1_hour_desc] => Good
    [aqi_1_hour_val] => 5.700056
    [aqi_desc] => Good
    [aqi_nowcast_desc] => Good
    [aqi_nowcast_val] => 3.7988894
    [aqi_type] => United States EPA AQI
    [aqi_val] => 9.480676
    [dew_point] => 48.6
    [heat_index] => 75.6
    [hum] => 36.8
    [last_report_time] => 1600350300
    [pct_pm_data_1_hour] => 100
    [pct_pm_data_24_hour] => 100
    [pct_pm_data_3_hour] => 100
    [pct_pm_data_nowcast] => 100
    [pm_1] => 2.1594203
    [pm_10] => 2.710145
    [pm_10_1_hour] => 2.247036
    [pm_10_24_hour] => 7.0907187
    [pm_10_3_hour] => 1.4512982
    [pm_10_nowcast] => 1.8898883
    [pm_2p5] => 2.2753623
    [pm_2p5_1_hour] => 1.3680135
    [pm_2p5_24_hour] => 5.557344
    [pm_2p5_3_hour] => 0.5515239
    [pm_2p5_nowcast] => 0.9117335
    [temp] => 77
    [ts] => 1600350300
    [wet_bulb] => 55.8

Wim
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elagache

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Glad you like it! (Re: Davis AirLink)
« Reply #4 on: September 17, 2020, 11:28:12 pm »
Dear wx-watch, Wim, and WeatherCatters who are fussy about air quality,

Everything about it!
. . . . .

Well, that leaves little doubt does it! . . .  [biggrin]  Thanks for all the useful information!  [tup]

Small mains powered white box the size of my palm.

Thanks, I didn't realize it was that small.

Two quick questions:

It only connects via WiFi. You set it up with the WeatherLink App and it only takes a few moments.

Which WeatherLink App are you referring to - iOS?  Also, do you have any sense of what sort of range you get on WiFi?  I was thinking I would walk around with my iPhone to see if my location had enough WiFi connectivity for the Davis AirLink.  Did you do something like that to make sure your device would reliably work on home network?

Documentation: https://weatherlink.github.io/airlink-local-api/
Local access with http://_ip_nr_/v1/current_conditions  which returns this json string

Thanks Wim for the references.  I suspect that one could cobble together some sort of AppleScript to at least pull some data into a WeatherCat synthetic channel.  Alas, these days I hardly have enough time to keep the house provisioned thanks to COVID-19

Thanks again!

Cheers, Edouard  [cheers1]

wx-watch

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Re: Davis AirLink
« Reply #5 on: September 18, 2020, 11:02:06 am »
Yes - the IOS WeatherLink App - during setup it connects to the AirLink via Bluetooth and you tell it your WiFi details. It only uses 2.4ghz and not 5ghz. Mine is about 20ft away from the router and through two walls and seems to connect ok.

Obviously you need a WeatherLink account to access its data.

https://www.weatherlink.com

elagache

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Thanks for the info! (Re: Davis AirLink)
« Reply #6 on: September 18, 2020, 10:54:34 pm »
Dear wx-watch and WeatherCat faithful,

Yes - the IOS WeatherLink App - during setup it connects to the AirLink via Bluetooth and you tell it your WiFi details. It only uses 2.4ghz and not 5ghz. Mine is about 20ft away from the router and through two walls and seems to connect ok.
. . . . .

Okay, thanks for the details.  I was curious how Davis would make the setup process work.  Using Bluetooth to make initial contact with the device is clever.  I'm not quite ready to take the plunge just yet, but thanks to you, the process is no longer mysterious.

Cheers, Edouard  [cheers1]