> The PA sensors do not need an internet connection. Just query the local > endpoint 'json'.
In fact I do that. Unplug your internet and try it. It doesn’t work for me. > On Sep 22, 2020, at 3:37 AM, Tom Keffer <[email protected]> wrote: > > > That's awesome! I haven't seen a comparison anywhere else. > > The PA sensors do not need an internet connection. Just query the local > endpoint 'json'. For example, mine is at http://192.168.1.101/json > > -tk > >> On Mon, Sep 21, 2020 at 9:03 PM [email protected] <[email protected]> >> wrote: >> I’ve been playing with the new Davis AirLink. I have one WeeWX instance >> running with it. >> >> Unlike the PurpleAir, which is slow answering requests and needs an internet >> connection to respond, the AirLink is fast (the doc claims it can respond to >> 3 queries per second) and presumably will still respond when the internet is >> down. >> >> On the downside, unlike the performance of the PurpleAir, which is pretty >> well understood (e.g., during these poor air quality days due to wood smoke, >> the LRAPA correction can be used to have some confidence in the numbers), >> I’m not aware of any studies with the AirLink. As such, it’s difficult to >> have any confidence in the AirLinks numbers. Having said that, I thought I >> would plot AirLink concentrations vs. PurpleAir (A and B sensor) >> concentrations. >> >> At present, the AirLink is reporting similar PM2.5 to the PurpleAir (see >> below). It would be nice to know if the AirLink continued to closely track >> PM2.5 at much higher concentrations. I hope to not find out (it’s been >> pretty good here in the SF Bay Area for the last few days), but I’ll reply >> here with a graph if the concentrations get real bad again. >> >> <CFC91D13-9283-4550-B98F-330F9FEC22DB.jpeg> >> >> >> >> >> >> -- >> You received this message because you are subscribed to the Google Groups >> "weewx-user" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected]. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/weewx-user/b6efea69-df87-4b96-b366-bd8df2981a59n%40googlegroups.com. > > -- > You received this message because you are subscribed to the Google Groups > "weewx-user" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/weewx-user/CAPq0zEB9%3DZ-rcOPWf9F-q_Wx_hijmdfOTc0%3D%2BctTXUpZHyK%2B5w%40mail.gmail.com. -- You received this message because you are subscribed to the Google Groups "weewx-user" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/weewx-user/0F4D4571-6A61-44E6-9D26-858A87380026%40johnkline.com.
