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PICList Thread
'Nearly FREE...Bar Code Readers'
1997\02\18@223733 by Mark G. Forbes

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I've got about 100 circuit boards that could be used
for bar code readers, or anything else that needs to
reflectively detect light and dark.

Circuit summary:

A Hewlett-Packard HBCS-1100 bar code reader head, with
emitter and detector, and focusing optics, is mounted
at the end of a 1" x 2" circuit board. Two .150 diameter
mounting holes provide a means of physical attachment.
The reader feeds a current-to-voltage converter (LM358N)
which in turn feeds a LM311N buffer stage for logic-level
outputs. A 3-pin polarized connector (.100 centers, .025sq pin)
is mounted coplanar with the board to provide the interface.
Pin 1=5V
Pin 2=Ground
Pin 3=Output   5V=Black, 0V=White

These detectors go about $8 in volume, more if you buy just
a few. With the board and such, they're worth even more.

I'd like to get $2 for each one, mostly to cover postage. Any
surplus goes to the PICLIST fund. I'll throw in a nice-looking
schematic, too. As with most of these things, it's first-come,
first-served. If you're not in the USA, you'll need to provide
equivalent local currency....not that I'm going to convert it,
but I figure it's my one chance to get some samples of money
from far corners of the planet.

If you want a bunch of them, let me know by email and I'll
figure out what the cost will be. If you decide it's just
what you need for a product or something, I'll be happy to
throw in the Gerber files for the board layout so you can
make thousands of them. :-)

We were going to use these in a product, and then it got canceled.
Seems you really can't count on the vast majority of people to
insert a card smoothly enough to read a barcode. If you're going
to do that, you need to wait for full insertion, then use an
imaging-type reader to grab the whole barcode at once. Oh, well.

*DON'T* send me email on this! If you want one or more, send
the bucks. IF YOU SEND ME EMAIL ASKING FOR ONE, I WILL IGNORE IT.
The exception is volume-quantity requests.

Use my work address, and be sure to include your return mailing
address. I'll bulk 'em up and ship 'em out in a couple weeks, or
whenever I run out. If I get close to running out, I'll post a
note to that effect.

Mark G. Forbes, R & D Engineer  |  Acres Gaming, Inc.    (541) 766-2515
KC7LZD                          |  815 NW 9th Street     (541) 753-7524 fax
spam_OUTforbesmTakeThisOuTspampeak.org                |  Corvallis, OR 97330
http://www.peak.org/~forbesm
.....mforbesKILLspamspam@spam@hq.acresgaming.com

"There has been an alarming increase in the number of things I know nothing
about."
---Anomalous

1997\02\20@012424 by opt*oeng

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Mark G. Forbes wrote:
{Quote hidden}

I have sent you a check for $20 to cover 10 units.  Thanks.
--
NOTE: remove asterisks from email address to reply directly

Paul Mathews, consulting engineer
AEngineering Co.

email: EraseMEoptoengspam_OUTspamTakeThisOuTwhidbey.com
non-contact sensing and optoelectronics specialists

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