Topic: Davis Airlink Professional Air Quality Sensor PM 1, 2.5 & 10

[hmderek]

Being dependent on their API to retrieve your own data would be an unfortunate limitation.

You will not be dependent on the API to retrieve your own data. You'll be dependent on the mobile app or the Davis website. But because of the API other developers will be able to leverage the API so that they can provide you other solutions to have at your data. I'm not sure what else you are expecting.

Before networked IoT devices were common, geting data via USB was common. But that too required the manufacturer to provide the compatible software application. And likewise 3rd party developers made software to understand the USB port data output.

Nothing has changed. You want data and you need to either use what the company provides or rely on a developer to provide an alternative solution.

So what are you asking for? I don't understand your comment.

Some context. Currently I don't use any of the standard Davis logging solutions. I have a Meteostick connected to a Raspberry Pi. Capturing data mid air, so to speak, and writing it to a local databse. In my setup, I only need an internal network. I'm not immediately dependent on the internet or servers from other parties.

When we talk about an API, I'm assuming that means I would need to request my own data from the server, making the setup dependent on a working internet connection and third party server availability, with possible delay depending on how long it takes for an upload to become available to me.

[hmderek]

2. There is a local API whereby any local device can make an HTTP request and receive a snapshot of current data. As far as I know there is no local data storage in Airlink (ie the equivalent of archive or logged data) so a local API request will just return the set of current readings. Any local data storage will need to be done by the requesting device.

Ah! That would be perfect. I guess all one would need to know is the refresh rate to determine your data polling interval.

[johnd]

Ah! That would be perfect. I guess all one would need to know is the refresh rate to determine your data polling interval.

I've not tested the local API myself yet, but the specs say that PM1/2.5/10 readings update every minute, so certainly no point in polling more often than that. I don't know about the AQI indexes - these may be updated less often.

[galfert]

When we talk about an API, I'm assuming that means I would need to request my own data from the server, making the setup dependent on a working internet connection and third party server availability, with possible delay depending on how long it takes for an upload to become available to me.

Okay I can see your misunderstanding. The use of API does not mean that the Internet is required to get data. There are API that work over the Internet and there are API that work on your local network. In the case of WLL and this new Davis Airlink the device itself has an API that can be used by an application to get live data. The software talks directly to the device.

[hmderek]

When we talk about an API, I'm assuming that means I would need to request my own data from the server, making the setup dependent on a working internet connection and third party server availability, with possible delay depending on how long it takes for an upload to become available to me.

Okay I can see your misunderstanding. The use of API does not mean that the Internet is required to get data. There are API that work over the Internet and there are API that work on your local network. In the case of WLL and this new Davis Airlink the device itself has an API that can be used by an application to get live data. The software talks directly to the device.

Bottom line, definitely getting this one when it becomes available.

[safuser]

Anyone have any info on the power requirements yet? 

[johnd]

Anyone have any info on the power requirements yet?

Mains adapter is 5v 1A. The 5v current draw is stated as 'Average: 100mA; Peak: 500mA'

NB It looks like there will be a version supplied with a USB lead (presumably rather than a mains adapter).

[Weather Spares]

It looks like Davis are going over to two part USB leads plugging into a localised mains plugs. I've seen this in the 6152UK station this month with the cardboard box being replaced by a plastic heat sealed bag containing the two components.

[Maximus]

I'm also guessing this really isn't a Davis device since I cannot see this listed on the FCC's list.

Last two devices listed are:

IR2DWW6805 2019-06-26 Weather data gateway with Wifi/Ethernet interface (EnviroMonitor IP Gateway)
IR2DWW6100 2019-06-26 Weather data receiver with Wifi/Ethernet interface (WLL)

I even used the Search of the FCC database but these are the last two devices submitted for FCC approval by Davis Instruments.  the only other thing is it is awaiting approval, but usually you still see the device listed on the FCC website.

 [ You are not allowed to view attachments ]

No need for a FCC certification on this one, since the only communication is via a Wi-Fi module that is separately certified. The product is Davis designed, manufactured and tested in the USA.

[ConligWX]

Supporting documents are now up and available to purchase from Davis

https://www.davisinstruments.com/product/airlink-professional-air-quality-sensor/#supporting_documents


Sent from my GM1913 using Tapatalk

[txweather.org]

I put in for a pre-order

[CW2274]

No idea if this adds anything, but this was in my e-mail today.

https://mailchi.mp/6f08595d8680/preorder-the-new-airlink-professional-air-quality-sensor?e=f4f178a608

[bborzell]

We have been surrounded by smoke from regional fires for about 10 days.

I received the preorder announcement from Davis and placed the order within minutes. Shoukd arrive the first/second week of September.

[hmderek]

API documentation: https://weatherlink.github.io/airlink-local-api/

[ConligWX]

No need for a FCC certification on this one, since the only communication is via a Wi-Fi module that is separately certified. The product is Davis designed, manufactured and tested in the USA.

Yep we now know. the hardware however is a Plantower A003 (or a derivative) of it.  the senor and wifi module will be made elsewhere, Assembled and firmware uploaded by Davis and then tested.

[ALITTLEweird1]

It'll be interesting to see how this performs compared to PurpleAir.

[miraculon]

If this is representative of the Plantower PCB manufacturing process, I say "no thanks".



You would think that they could clean up the board for their promotional photos on their web site. Maybe it was out in the field for a couple of years.

This is their CO2 sensor, but they are probably built on the same manufacturing process.

Greg H.

[txweather.org]

Well I will let you know how it looks, mine shipped

[srpawski]

Well I will let you know how it looks, mine shipped

Please do.  I am also interested.  I am going to see what Scaled Instruments is selling them for since he sells everything less than MSRP.  I am guessing around $150.

[ralphbsz]

Our Airlink arrived today. The box is remarkably small. Installing it permanently in a fashion that's rainproof (even in high wind) may be a bit of a challenge; the power supply in particular will require special treatment. Before winter I'll have to do some engineering.

Setup (using a cell phone and Bluetooth and existing WiFi) was trivial and trouble free. The air quality started uploading to the Weatherlink site within a minute. The local API posted on the hosiene... forum works fine: display the web page http://<airlink_ip_address_or_host_name>/v1/current_conditions and you get a JSON formatted document that is easy to parse. For details, see https://weatherlink.github.io/airlink-local-api/

The funny thing is that the device arrived two weeks late (and still remarkably early, we live about an hour from Davis' headquarters in Hayward): We live right next to one of the large fires in California, and about two weeks ago, when the CZU fire was raging at its worst (and we got evacuated), the air quality here was such that you couldn't go outside without coughing. The nearby PurpleAir stations reported AQI values of about 600, and then many of then went offline (we had widespread power/internet outages, and about 1500 houses have been destroyed). So today, the sun is somewhere between red and yellow, and the AQI is about 120. It would have been fun to have an air quality measurement device during the height of the smoke.

[the beteljuice]

Our Airlink arrived today. .... The local API posted on the hosiene... forum works fine: display the web page http://<airlink_ip_address_or_host_name>/v1/current_conditions and you get a JSON formatted document that is easy to parse.

Any chance you are uploading your json to the web ? - I need a 'donor' to check out my modified script - Now using genuine live data from Mapantz

Edit: link modified

[ralphbsz]

The airlink is (like most other things around the home) on an internal network, and not visible on the the internet. Does this help:

{ "data": { "did": "001D0A1000F8", "name": "airquality", "ts": 1599665212, "conditions": [{ "lsid": 344634, "data_structure_type": 5, "temp": 70.3, "hum": 21.5, "dew_point": 29.0, "wet_bulb": 41.0, "heat_index": 66.1, "pm_1_last": 32, "pm_2p5_last": 47, "pm_10_last": 61, "pm_1": 32.04, "pm_2p5": 48.72, "pm_2p5_last_1_hour": 49.40, "pm_2p5_last_3_hours": 51.16, "pm_2p5_last_24_hours": 59.45, "pm_2p5_nowcast": 51.77, "pm_10p0": 61.94, "pm_10p0_last_1_hour": 63.29, "pm_10p0_last_3_hours": 65.74, "pm_10p0_last_24_hours": 72.07, "pm_10p0_nowcast": 65.95, "last_report_time": 1599665212, "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": 54 }] }, "error": null }

[srpawski]

Our Airlink arrived today. The box is remarkably small. Installing it permanently in a fashion that's rainproof (even in high wind) may be a bit of a challenge; the power supply in particular will require special treatment. Before winter I'll have to do some engineering.

Setup (using a cell phone and Bluetooth and existing WiFi) was trivial and trouble free. The air quality started uploading to the Weatherlink site within a minute. The local API posted on the hosiene... forum works fine: display the web page http://<airlink_ip_address_or_host_name>/v1/current_conditions and you get a JSON formatted document that is easy to parse. For details, see https://weatherlink.github.io/airlink-local-api/

The funny thing is that the device arrived two weeks late (and still remarkably early, we live about an hour from Davis' headquarters in Davis): We live right next to one of the large fires in California, and about two weeks ago, when the CZU fire was raging at its worst (and we got evacuated), the air quality here was such that you couldn't go outside without coughing. The nearby PurpleAir stations reported AQI values of about 600, and then many of then went offline (we had widespread power/internet outages, and about 1500 houses have been destroyed). So today, the sun is somewhere between red and yellow, and the AQI is about 120. It would have been fun to have an air quality measurement device during the height of the smoke.

I pre-ordered one from Scaled Instruments last night.  $123 and change.  I have no idea when I'll get it, but it should be this month.  I agree the power supply sucks for an item meant to be used mainly outside.  I think they could have come up with a different connector system as an add on purchase to use it outside.  I would gladly pay $20 for, say, a 15 foot connector with a wall wart or some sort of one-piece transformer at the plug in.  I also think they could have avoided the whole issue and built the power supply unit right inside the thing in order to be able to use a standard AC plug.

It will be interesting to see what other changes this new Davis company decides to make especially since people are already complaining about customer service and phone wait times.

[mldenison]

Mine is due to be delivered tomorrow from Davis.  Since Brian has built connectivity into WD for this, I wonder how I could use whatever is uploaded to WD into the Alternate Saratoga template.

[the beteljuice]

@ralphbsz ...

Interesting ... yours is already being referred to as the 'old firmware' 

Looking at your posted data - look at last 24h value, you should have stayed indoors 

My parser won't work on your data (ATM)
"data_structure_type": 5 is now 6
and "pm_10p0_???? references are now "pm_10_????

Edit: My code now works with both versions.
Now live data