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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 > > > > > >