Hi Monica
Could you let me know what kind of sensor you are using? The bluetooth
scanner, are you referring to scanning for bluetooth device or it's a
bluetooth connection to your computer?

Thanks
Kun

On Thu, Jul 9, 2020 at 7:54 AM Monica Maceli <[log in to unmask]> wrote:

> 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
> > >
> >
>