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'[EE]: smallest barcode scanner'
2006\06\01@130118 by Gus S Calabrese

face picon face
I have been asked to build a secret shopper scanner.
The scanner will be use in grocery stores to scan the
barcodes of new products.  Must be small to mount
on the wrist.  Inexpensive is always good.  The interface
can be RS232, i2c, SPI.

Gracias

POD  AGSC

2006\06\01@130941 by William Bross

picon face
Gus S Calabrese wrote:

>I have been asked to build a secret shopper scanner.
>The scanner will be use in grocery stores to scan the
>barcodes of new products.  Must be small to mount
>on the wrist.  Inexpensive is always good.  The interface
>can be RS232, i2c, SPI.
>
>Gracias
>
>POD  AGSC
>  
>
kinda like this one:

http://www.symbol.com/product.php?productID=214&tab=Data%20Sheet

Bill

2006\06\01@131306 by David VanHorn

picon face
On 6/1/06, Gus S Calabrese <spam_OUTgscTakeThisOuTspamomegadogs.com> wrote:
>
> I have been asked to build a secret shopper scanner.
> The scanner will be use in grocery stores to scan the
> barcodes of new products.  Must be small to mount
> on the wrist.  Inexpensive is always good.  The interface
> can be RS232, i2c, SPI.


I've done it in the AVR 2343, an SO-8, with no crystal or other hardware
beyond the optical nest.

2006\06\01@174337 by Bob Axtell

face picon face
Gus S Calabrese wrote:
> I have been asked to build a secret shopper scanner.
> The scanner will be use in grocery stores to scan the
> barcodes of new products.  Must be small to mount
> on the wrist.  Inexpensive is always good.  The interface
> can be RS232, i2c, SPI.
>
> Gracias
>
> POD  AGSC
>  
Easy one. HP makes a really good chip that is a piece of cake to
interface to.
HP1810 or something.

Boy, I'd like to do that one again. Ahh, to be young again.

--Bob

2006\06\01@175627 by David VanHorn

picon face
>
> Easy one. HP makes a really good chip that is a piece of cake to
> interface to. HP1810 or something.


Discontinued, AFAIK, and a 40 pin dip that took external SRAM

2006\06\01@180458 by Bob Axtell

face picon face
David VanHorn wrote:
>> Easy one. HP makes a really good chip that is a piece of cake to
>> interface to. HP1810 or something.
>>    
>
>
> Discontinued, AFAIK, and a 40 pin dip that took external SRAM
>  
so you redid it from scratch? what about Welch-Alyn's versions?
Anyway, you need a pat on the back to have done that from scratch.
Attaboy David!

--Bob

2006\06\02@074047 by William Couture

face picon face
On 6/1/06, Gus S Calabrese <.....gscKILLspamspam@spam@omegadogs.com> wrote:

> I have been asked to build a secret shopper scanner.
> The scanner will be use in grocery stores to scan the
> barcodes of new products.  Must be small to mount
> on the wrist.  Inexpensive is always good.  The interface
> can be RS232, i2c, SPI.

Look for the Symbol CS1504.

Bill

--
Psst...  Hey, you... Buddy...  Want a kitten?  straycatblues.petfinder.org

2006\06\02@102912 by David VanHorn

picon face
>
>
> so you redid it from scratch? what about Welch-Alyn's versions?
> Anyway, you need a pat on the back to have done that from scratch.
> Attaboy David!


Semi-attaboy. I did all the UPC/EAN flavours, forward and backward.
Had to overlap the input buffer, output buffer, and stack space in ram.

2006\06\02@151824 by Gus S Calabrese

face picon face

On 2006-Jun 01, at 15:56hrs PM, David VanHorn wrote:

>
> Easy one. HP makes a really good chip that is a piece of cake to
> interface to. HP1810 or something.
>


Discontinued, AFAIK, and a 40 pin dip that took external SRAM
[ What replaced it ?   POD ]

2006\06\02@153839 by David VanHorn

picon face
>
>
> [ What replaced it ?   POD ]


As far as I'm aware, nothing.

2006\06\02@170239 by Mike Hord

picon face
> I have been asked to build a secret shopper scanner.
> The scanner will be use in grocery stores to scan the
> barcodes of new products.  Must be small to mount
> on the wrist.  Inexpensive is always good.  The interface
> can be RS232, i2c, SPI.

A long time ago (for a man as young as myself- probably close to 2/3
of MY life.  Others won't find it so), my family was selected as a
Nielsen family.  For a few months we scanned our grocery purchases
with a barcode reader, then held it up to the phone while it screeched
data to a far away server.

The bar code reader was a single point that was drug across the
label.  Something like that might be an ideal tool for this- I recall the
whole deal being roughly the size of a common office stapler, so I
assume the size could be reduced greatly, possibly down to where
the sensor was on the tip of a finger and the rest of the electronics
live in a wristwatch.

Mike H.

2006\06\02@173301 by David VanHorn

picon face
>
> The bar code reader was a single point that was drug across the
> label.  Something like that might be an ideal tool for this- I recall the
> whole deal being roughly the size of a common office stapler, so I
> assume the size could be reduced greatly, possibly down to where
> the sensor was on the tip of a finger and the rest of the electronics
> live in a wristwatch.


I developed such a beast, and yes it could be.
Look in a cue-cat for optics, and add an SO-8 processor to do the decoding.
>From that point it just remains what you want to talk to.
That project I did was line powered, and squaked DTMF using a fun speedup
algorithm.
Others I've done used clocked serial to talk to a host processor.

The quality of the optical nest will have a big impact on the code
complexity.

2006\06\05@103351 by alan smith

picon face
GoCode had some sort of small reader at one time but I dont know if they are still around.  That was a few years ago.  Might BLINGO them and see if they are?
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2006\06\07@155810 by Barry Gershenfeld

face picon face

>I have been asked to build a secret shopper scanner.
>The scanner will be use in grocery stores to scan the
>barcodes of new products.  Must be small to mount
>on the wrist.  Inexpensive is always good.  The interface
>can be RS232, i2c, SPI.
>POD  AGSC

Alternate idea--hide in plain sight.  If it looked ordinary (I was thinking
Palm Pilot because they actually made those, but how about a cell phone?)
people would see it but not be aware it was being used to scan bar codes.

Barry



2006\06\07@162328 by Robert Rolf

picon face
Barry Gershenfeld wrote:

>>I have been asked to build a secret shopper scanner.
>>The scanner will be use in grocery stores to scan the
>>barcodes of new products.  Must be small to mount
>>on the wrist.  Inexpensive is always good.  The interface
>>can be RS232, i2c, SPI.
>>POD  AGSC
>
>
> Alternate idea--hide in plain sight.  If it looked ordinary (I was thinking
> Palm Pilot because they actually made those, but how about a cell phone?)
> people would see it but not be aware it was being used to scan bar codes.
>

I noticed a person taking photos of cosmetics displays in a local
big chain store.
Asked him what he was doing. Said he was 'taking inventory'. Apparently
the company had image recognition software the could classify product and
could also read and decode the barcodes. He was using a smallish but
high pixel count camera (Espio I think). He did have a "authorized Rep"
badge on his lapel, so I thought nothing more of it.

Kinda reminded me of the guys who stole televisions out of big stores
by wearing coveralls with 'Joes TV repair' as they carted them out
the door. No one stopped to question them.

2006\06\07@164214 by Charles Craft

picon face
Been a while since I've used HP (Agilent) semi's but I missed this altogether.


http://www.agilent.com/home/avagotechnologies.shtml

Looking for Semiconductor Products Information?

As of December 1, 2005, Avago Technologies is a new company comprised of the former Agilent Technologies Semiconductor Products Group and is no longer related to Agilent Technologies.

Please go to the Avago Technologies website to access content related to these products. We apologize for any inconvenience this may cause.

http://www.avagotech.com/

{Original Message removed}

2006\06\07@170157 by David VanHorn

picon face
Cleverly hidden under "infrared"

http://www.avagotech.com/products/parametric-search.jsp?navId=H0,C1,C5231,C4948,C4966,C5070

All barcode chips flagged as "obsolete"  40 pin DIP or QFP, or 44 pin PLCC
A minimum implementation here:
http://www.avagotech.com/pc/downloadDocument.do?id=4648


An AVR mega-8 would be a very nice platform.
See data sheet for package detail

2006\06\07@200919 by Mike Hord

picon face
> Kinda reminded me of the guys who stole televisions out of big stores
> by wearing coveralls with 'Joes TV repair' as they carted them out
> the door. No one stopped to question them.

A long held tenet of my life has been that with a metal clipboard covered
in dirty, semi-rumpled paper, an orange jumpsuit with a name patch, and
a lot of confidence, a person can do almost anything without being
questioned.

Never put it to the test, though.

Mike H.

2006\06\07@214159 by Jinx

face picon face
> A long held tenet of my life has been that with a metal clipboard
> covered in dirty, semi-rumpled paper, an orange jumpsuit with a
> name patch, and a lot of confidence, a person can do almost
> anything without being questioned

A friend told me long ago that's how he breezed his way through
UK National Service in the late 50s

Or "The Draft" as US-ers would know it

http://en.wikipedia.org/wiki/National_Service

2006\06\07@233348 by Gus S Calabrese

face picon face
Excellent idea.  Now to come up with a brilliant disguise.
Candy bar ?  Water Bottle ?
POD

On 2006-Jun 07, at 13:57hrs PM, Barry Gershenfeld wrote:


> I have been asked to build a secret shopper scanner.
> The scanner will be use in grocery stores to scan the
> barcodes of new products.  Must be small to mount
> on the wrist.  Inexpensive is always good.  The interface
> can be RS232, i2c, SPI.
> POD  AGSC

Alternate idea--hide in plain sight.  If it looked ordinary (I was  
thinking
Palm Pilot because they actually made those, but how about a cell  
phone?)
people would see it but not be aware it was being used to scan bar  
codes.

Barry



2006\06\08@042151 by Alan B. Pearce

face picon face
>As of December 1, 2005, Avago Technologies is a new company
>comprised of the former Agilent Technologies Semiconductor
>Products Group and is no longer related to Agilent Technologies.

I came across this new name recently when looking at some LEDs. Gotta have a
laugh at the new name though 'ave-a-go at what ????

2006\06\08@122002 by Peter

picon face


On Wed, 7 Jun 2006, Gus S Calabrese wrote:

> Excellent idea.  Now to come up with a brilliant disguise.
> Candy bar ?  Water Bottle ?

They'd make you pay for it at the checkout ;-)

Peter

2006\06\08@124253 by David VanHorn

picon face
> > Excellent idea.  Now to come up with a brilliant disguise.
> > Candy bar ?  Water Bottle ?


Is that a laser in your water bottle, or are you not happy to see me?

2006\06\09@124203 by Howard Winter

face
flavicon
picon face
On Thu, 8 Jun 2006 19:19:53 +0300 (IDT), Peter wrote:

> On Wed, 7 Jun 2006, Gus S Calabrese wrote:
>
> > Excellent idea.  Now to come up with a brilliant disguise.
> > Candy bar ?  Water Bottle ?
>
> They'd make you pay for it at the checkout ;-)

So put the barcode of a discount coupon on it!  :-)))

Cheers,


Howard Winter
St.Albans, England


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