Subject:
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Re: Barcodes & error detection
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 8 Sep 2005 13:00:46 GMT
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Reply-To:
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rob.antonishen@gmail.NOMORESPAMcom
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Viewed:
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1226 times
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On 9/8/05, Brian Davis wrote:
> Using retroreflective white tape or reflective but slightly diffusive tape
> (an aluminum duct tape slightly crinkled and flattened again; I tried it as
> flat
> as possible as well) would seem to work, but actual tests show that it often
> can't be distinguished from white.
Are you lighting the area with a light brick, or relying on ambient
illumination? I find the Lego light sensor extremely finicky in "real
work" situation, and try to always shield the area from ambient and
provide my own illumination.
-Rob A>
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Message has 1 Reply:
 | | Re: Barcodes & error detection
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| (...) Gus uses two ight sensors, one to follow the (left edge) of a black line on a white background, and a seperate light sensor on an "outrigger" to read the barcodes. There is no light brick, but instead both use the light sensor itself to supply (...) (19 years ago, 8-Sep-05, to lugnet.robotics)
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Message is in Reply To:
| | Re: Barcodes & error detection
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| (...) Absolutely, but in any real world application there is almost always some error rate. (...) John Barnes also suggested that to me after I posted, and I'm embarassed to admit that the thought hadn't occured to me. I need to test (again), but (...) (19 years ago, 8-Sep-05, to lugnet.robotics)
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