>
> 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
> forbesmKILLspampeak.org                |  Corvallis, OR 97330
> http://www.peak.org/~forbesm
> .....mforbesKILLspam.....hq.acresgaming.com
>
> "There has been an alarming increase in the number of things I know nothing
> about."
> ---Anomalous