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'[EE:] Reflective opto sensor suitable for bar code'
2001\04\18@174910 by Harold M Hallikainen

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       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?

Thanks!

Harold



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Lighting control for theatre and television at http://www.dovesystems.com

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2001\04\18@175737 by David VanHorn

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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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2001\04\18@180158 by James Paul

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Harold,

I have some boards with this type of component on it that I got from
a guy whom I have dealt with in the past.  Send me your address, and
postage, and I'll send you one, along with hookup data is I can find
it.  The board weighs just a few ounces, so you pick the shipping
method you want, and I'll try to accommodate.  Let me know.


                                            Regards,

                                              Jim

On Wed, 18 April 2001, Harold M Hallikainen wrote:

{Quote hidden}

spam_OUTjimTakeThisOuTspamjpes.com

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2001\04\18@184410 by Harold M Hallikainen

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Excellent!  Since I'm going to be out of town all next week, UPS ground
or USPS would be fine. The address is:

Harold Hallikainen
Dove Systems
3563 Sueldo Street, Suite E
San Luis Obispo, CA 93401

If you want, you can send it UPS freight COD.

Thanks!

Harold

On Wed, 18 Apr 2001 14:59:56 -0700 James Paul <.....jimKILLspamspam@spam@JPES.COM> writes:
{Quote hidden}

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Lighting control for theatre and television at http://www.dovesystems.com

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2001\04\19@043326 by Roman Black

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Harold M Hallikainen 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?


Yes the Sharp ones used in modern VCRs are very small,
combined with a convex lens you will be fine. I've fiddled
with similar setups for small robot sensors.

Some of the Panasonic/National brand VCRs from about
10 years back have remotes with built in laser barcode
reader. This was for programming the VCR record times by
the barcode sheet supplied. These remotes are expensive
new (replacement), but most TV repair shops here have old
ones with blown micro or bad lcd. The laser bit never
fails that I have seen.
:o)
-Roman

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