[aprssig] APRS Air Quality Monitoring

Thu Oct 13 10:43:09 EDT 2022

I have a swarm of 2.5 ones at home feeding my automation system.  Hard to
say know when Ikea sells them for 10$ each and they're easily modifiable.
Sensors for monitoring all sorts of things are inexpensive these days.

Currently my "overwatch swarm" feeds home assistant:
2.5
Temp
Pressure
Humidity
CO²
VOC

I would suggest rather than specific layout with fields for a fixed list of
data, it may be better to have a message that transmits one data type per
packet but multiple packets that can be sent for a range for additional
data.

p

On Thu, Oct 13, 2022, 10:30 AM Steve Dimse <steve at dimse.com> wrote:

>
>
> > On Oct 11, 2022, at 4:59 PM, Erik Bacon Beck <bacon at tahoma.com> wrote:
> >
> >
> >
> >> Picking up this old thread; was a sub-specification for working PM2.5
> data into the APRS stream ever worked out? I have one in operation and
> would like to make that data available on CWOP/APRS (not necessarily via
> RF).
>
> No one ever did. The first guy to put one on the air gets to define the
> format. I would suggest one that includes the three major AQ measurements
> (2.5 and 10 nm particulates and ozone) even if you don't put them all on
> the air so another format is not needed in the future, allowing for absent
> measurements to be replaced with dots, as in the weather format. The User
> Defined list is here,
>
> http://www.aprs.org/aprs11/expfmts.txt
>
> simply pick an unused character pair to follow the {.
>
> If anyone wants to start a discussion, my opening suggestion would be
>
> {AQ PM2.5 x.x PM10 y.y ozn z.z
>
> and allowing any float or integer value, not position limited, so just a
> 2.5 report might look like
>
> K4HG>APRS:{AQ PM2.5 12.5 PM10 ... ozn ...
>
> Any discussion?
>
> Steve K4HG
> >>
> >>
> >>
> >>
> >> aprssig] APRS Air Quality Monitoring
> >> Steve Dimse steve at dimse.com
> >> Sun Oct 21 10:20:57 EDT 2018
> >>      • Previous message (by thread): [aprssig] APRS Air Quality
> Monitoring
> >>      • Next message (by thread): [aprssig] aprs.fi and Google Maps API
> pricing changes, status update
> >>      • Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]
> >> This project uses the SDS011 particulate sensor. Looking at its specs
> it would be trivial to interface (rs232 output) but if the specs are
> accurate it isn't designed for outside air. It is rated for storage in up
> to 90% humidity and operation in up to 70% humidity. Not too many places in
> the world are consistently under 70%. It draws air in with a fan and my
> guess is water would precipitate from humid air inside the sensor. Maybe
> heating the unit would prevent that.
> >>
> >>
> >>
> >> Still they aren't expensive (under $25 on eBay) so I ordered one to
> play with.
> >>
> >> Steve K4HG
> >>
> >>> On Oct 12, 2018, at 8:05 PM, Graham <planophore at aei.ca> wrote:
> >>>
> >>> Bob,
> >>>
> >>> There are several crowd sourced air monitoring projects that are
> currently active
> >>>
> >>> https://luftdaten.info/en/home-en/  is one that have spent a bit of
> time reading about. A friend has set up such a sensor not far from were I
> am and he indicates that it seems to work well.
> >>>
> >>> http://deutschland.maps.luftdaten.info/#3/49.15/-32.18   shows world
> wide participation and as you might expect for some that started in Europe,
> most participants in that part of the world
> >>>
> >>> And more specifically my friends sensor:
> >>>
> >>> http://deutschland.maps.luftdaten.info/#8/45.457/-74.499   click on
> the hex to get a text display of it's latest report.
> >>>
> >>> May or may not be what you have in mind
> >>>
> >>> An interface to APRS, sounds like a good idea to me.
> >>>
> >>> cheers, Graham ve3gtc
> >>>
> >>>
> >>>
> >>> On 2018-10-12 16:00, Robert Bruninga wrote:
> >>>> Has anyone looked into the lower priced air-quality monitors that are
> out
> >>>> there? $50 to $250?
> >>>>
> >>>> Could one be interfaced to APRS to give some reasonable indications
> of air
> >>>> quality?
> >>>>
> >>>> I attended a meeting last night on air quality and the big idea was
> that
> >>>> in the entire county, there is only one EPA air quality monitor and
> it is
> >>>> no closer than 15 miles to the THREE mega power plants (one coal and
> two
> >>>> gas).  So there is nothing that is indicating the air quality where
> the
> >>>> people live and near the plant.
> >>>>
> >>>> This could be a great little processor project if we can get the
> sensors.
> >>>>
> >>>> What parameters are available and from that we can define an APRS
> format.
> >>>> We can include radiation counts too...
> >>>>
> >>>> Bob, WB4APR
> >>>>
> >>>> _______________________________________________
> >>>> aprssig mailing list
> >>>> aprssig at lists.tapr.org>>
> http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org>
> >>>
> >>> _______________________________________________
> >>> aprssig mailing list
> >>> aprssig at lists.tapr.org>
> http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org
> >>
> >>
> >>      • Previous message (by thread): [aprssig] APRS Air Quality
> >>
> >>
> >> Erik
> > _______________________________________________
> > aprssig mailing list
> > aprssig at lists.tapr.org
> > http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org
>
>
> _______________________________________________
> aprssig mailing list
> aprssig at lists.tapr.org
> http://lists.tapr.org/mailman/listinfo/aprssig_lists.tapr.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.tapr.org/pipermail/aprssig_lists.tapr.org/attachments/20221013/6973ee50/attachment.html>