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Thread: Reflective opto sensor suitable for bar code reading?
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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.
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<4.3.2.7.2.20010418164230.00e113d0@mail.cedar.net>

In reply to: <20010418.144729.-192727.0.haroldhallikainen@juno.com>
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