----- Original Message -----=20
From: "David Duffy (AVD)" <david@audiovisualdevices.com.au>
To: "PicList" <piclist@mit.edu>
Sent: Monday, February 20, 2012 5:42 PM
Subject: [EE] Proximity Sensors


> Has anyone here done much work with proximity sensors?  I am looking to=20
> trigger an event when someone stands in front of (or walks past) a=20
> specific area in a retail environment.  The sensing must be done from=20
> one side only (no beam break methods).

Ultrasonics polled in order so they don't interfere with each other?

-- Bob Ammerman
RAm Systems

--=20
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