piclist 2001\04\18\175737a >
Thread: Reflective opto sensor suitable for bar code reading?
face BY : David VanHorn email (remove spam text)

At 02:47 PM 4/18/01 -0700, you wrote:
>         Anyone aware of a reflective opto sensor that kinda looks like an
> opto
>interrupter (but relies on reflection instead of transmission) and has a
>narrow enough beam to read barcodes? I'd like to print barcodes on index
>cards and slide them through a cheap reader. The output can just be
>digital bar present/not present. I'll decode it in the PIC.
>         Any ideas?

Use any of the Omron sensors, through a slot.
However, you'd be better off with an illuminator at 45 degrees, and sensor
"straight up".
You want to sense diffuse reflections, not speculars.
Dave's Engineering Page: http://www.dvanhorn.org
Where's dave? http://www.findu.com/cgi-bin/find.cgi?kc6ete-9

http://www.piclist.com hint: The list server can filter out subtopics
(like ads or off topics) for you. See http://www.piclist.com/#topics


In reply to: <20010418.144729.-192727.0.haroldhallikainen@juno.com>
See also: www.piclist.com/techref/io/sensors.htm?key=sensor
Reply You must be a member of the piclist mailing list (not only a www.piclist.com member) to post to the piclist. This form requires JavaScript and a browser/email client that can handle form mailto: posts.
Subject (change) Reflective opto sensor suitable for bar code reading?

month overview.

new search...