Reflective opto sensor suitable for bar code reading?
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
>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
You want to sense diffuse reflections, not speculars.
Dave's Engineering Page: http://www.dvanhorn.org
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