Hi all,

I have been experimenting with entrance/exit sensors (pir and/or
ultrasonic) combined with a Bluetooth scanner running on Pis to calculate
relative space crowdedness for our campus.  Data is sent over wifi via MQTT
to a cloud Influxdb database w/ Grafana for data dashboard and alerting. I
don't have published code currently but I'd be happy to share and work with
others on this.

I too felt that the cameras, while doable and probably more accurate, would
introduce too many privacy concerns.

I got the Bluetooth idea from a project I heard about awhile ago, but I
can't remember the original creator (I think a librarian had these placed
in a library and a Redditor found a Pi and posted a "what is this thing?"
post). Does this ring any bells?

Best,

Monica Maceli, Ph.D.
Associate Professor
Pratt Institute | School of Information
144 W 14th St, 6th Floor, New York, NY, 10011-7301
www.monicamaceli.com | [log in to unmask]


On Wed, Jul 8, 2020 at 8:57 PM Tom Keays <[log in to unmask]> wrote:

> There was this write up from 2017 in the C4L Journal. Not cameras, but
> other kinds of sensors that didn't trigger any privacy concerns.
>
> https://journal.code4lib.org/articles/12947
>
> On Wed, Jul 8, 2020 at 1:20 PM Goben, Abigail H <[log in to unmask]> wrote:
>
> > I think Griffey did http://jasongriffey.net/mtf/homepage/feed/index.html
> >
> >
> > --
> > Abigail H. Goben, MLS
> > [log in to unmask]
> >
> > -----Original Message-----
> > From: Code for Libraries <[log in to unmask]> On Behalf Of Kun Lin
> > Sent: Wednesday, July 8, 2020 12:02 PM
> > To: [log in to unmask]
> > Subject: [CODE4LIB] Anyone attempted to use Raspberry Pi w/camera to
> > monitor building capacity?
> >
> > Anyone attempted to use Raspberry Pi w/camera to monitor building
> > capacity? Any good resources on how to do that?
> > Thanks
> > Kun
> >
>