Channel 9 Forums - Tech Off - USB cannot read barcode scanner http://mschnlnine.vo.llnwd.net/d1/Dev/App_Themes/C9/images/feedimage.png Channel 9 Forums - Tech Off - USB cannot read barcode scanner http://channel9.msdn.com/Forums Channel 9 keeps you up to date with the latest news and behind the scenes info from Microsoft that developers love to keep up with. From LINQ to SilverLight – Watch videos and hear about all the cool technologies coming and the people behind them. http://channel9.msdn.com/Forums en Tue, 21 May 2013 10:36:23 GMT Tue, 21 May 2013 10:36:23 GMT Rev9 27 -27 -1 Tech Off - USB cannot read barcode scanner Hello everyone. I wish someone would take time to read and help me with my problem. You see, I have a barcode scanner. Now, the scanner that I have has a serial port. When I connect it to the serial port on my desktop, it is working fine. The problem is, I have to do the programming part in my laptop. My laptop does not have any serial ports, so I purchased a connector that will convert it to usb. I tested the connector in the desktop, all ps/2 devices (ex. mouse) works fine. But when it comes to the barcode scanner, the computer cannot read the device. Which is weird. It can read the device when I connect it to the serial port, but it does not read the device when I connect it to the USB via a connector or converter. Sad Any ideas?

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/262015#262015 Wed, 02 Apr 2008 16:56:42 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/262015#262015 jellylychee 27 http://channel9.msdn.com/Niners/jellylychee/Discussions/RSS Tech Off - USB cannot read barcode scanner
jellylychee wrote:
Hello everyone. I wish someone would take time to read and help me with my problem. You see, I have a barcode scanner. Now, the scanner that I have has a serial port. When I connect it to the serial port on my desktop, it is working fine. The problem is, I have to do the programming part in my laptop. My laptop does not have any serial ports, so I purchased a connector that will convert it to usb. I tested the connector in the desktop, all ps/2 devices (ex. mouse) works fine. But when it comes to the barcode scanner, the computer cannot read the device. Which is weird. It can read the device when I connect it to the serial port, but it does not read the device when I connect it to the USB via a connector or converter. Sad Any ideas?


some devices just do not work via the USB converters.

I have seen paralel printers for Point of Sale apps not work via USB/Paralel adpaters for example.

the Serial barcode reader/scanner may require a "real" serial port.

does this have a driver in the OS when you set it up?
or is it just a raw Serial like an old Modem ?
can you get a USB scanner from the same Mfg ??

new PC's are not having serial ports so I would work on moving to USB .... in the end I think it's worth it.

9pin and 25pin Serial is just about gone.
and really USB is a 4 wire serial buss anyway...

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/e38611a199ea44acb7229dfa00c36758#e38611a199ea44acb7229dfa00c36758 Wed, 02 Apr 2008 18:04:34 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/e38611a199ea44acb7229dfa00c36758#e38611a199ea44acb7229dfa00c36758 figuerres 27 http://channel9.msdn.com/Niners/figuerres/Discussions/RSS Tech Off - USB cannot read barcode scanner
figuerres wrote:


some devices just do not work via the USB converters.

I have seen paralel printers for Point of Sale apps not work via USB/Paralel adpaters for example.

the Serial barcode reader/scanner may require a "real" serial port.

does this have a driver in the OS when you set it up?
or is it just a raw Serial like an old Modem ?
can you get a USB scanner from the same Mfg ??

new PC's are not having serial ports so I would work on moving to USB .... in the end I think it's worth it.

9pin and 25pin Serial is just about gone.
and really USB is a 4 wire serial buss anyway...


The scanner has a 6pin male and female connector. It did not come with a driver. I just borrowed it from my school for my thesis. They do not have a USB scanner sad to say.

So it is safe to say that the problem is with my converter? Should I try to look for other converters? Or it is just a waste of time? I read that some barcodes work when using converters.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/89fb9de7f68849789c1b9dfa00c367e0#89fb9de7f68849789c1b9dfa00c367e0 Wed, 02 Apr 2008 18:32:06 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/89fb9de7f68849789c1b9dfa00c367e0#89fb9de7f68849789c1b9dfa00c367e0 jellylychee 27 http://channel9.msdn.com/Niners/jellylychee/Discussions/RSS Tech Off - USB cannot read barcode scanner Why not get a USB barcode scanner?

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/4e50a0f0a370469394ed9dfa00c36855#4e50a0f0a370469394ed9dfa00c36855 Wed, 02 Apr 2008 18:45:05 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/4e50a0f0a370469394ed9dfa00c36855#4e50a0f0a370469394ed9dfa00c36855 Matthew van Eerde 27 http://channel9.msdn.com/Niners/Matthew van Eerde/Discussions/RSS Tech Off - USB cannot read barcode scanner
Matthew van Eerde wrote:
Why not get a USB barcode scanner?


Getting a new USB barcode scanner is my last resort. It is kinda expensive. I am still a student so.. Sad But if there is no other way, I have no choice.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/2c45e3b6e7ec4e05ad269dfa00c368cf#2c45e3b6e7ec4e05ad269dfa00c368cf Wed, 02 Apr 2008 18:50:24 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/2c45e3b6e7ec4e05ad269dfa00c368cf#2c45e3b6e7ec4e05ad269dfa00c368cf jellylychee 27 http://channel9.msdn.com/Niners/jellylychee/Discussions/RSS Tech Off - USB cannot read barcode scanner
jellylychee wrote:

figuerres wrote:


some devices just do not work via the USB converters.

I have seen paralel printers for Point of Sale apps not work via USB/Paralel adpaters for example.

the Serial barcode reader/scanner may require a "real" serial port.

does this have a driver in the OS when you set it up?
or is it just a raw Serial like an old Modem ?
can you get a USB scanner from the same Mfg ??

new PC's are not having serial ports so I would work on moving to USB .... in the end I think it's worth it.

9pin and 25pin Serial is just about gone.
and really USB is a 4 wire serial buss anyway...


The scanner has a 6pin male and female connector. It did not come with a driver. I just borrowed it from my school for my thesis. They do not have a USB scanner sad to say.

So it is safe to say that the problem is with my converter? Should I try to look for other converters? Or it is just a waste of time? I read that some barcodes work when using converters.


probably not gonna work is my guess.

but let's make sure you have the right things...

you say it has a 6 pin connector?

do you mean a round one like a PS/2 Keyboard ??

are you sure it's not a PS/2 keyboard wedge type??
they are common and are not a "Serial Port"

or perhaps a Mac Serial Port device?
some Mac's used to have a round Serial port thing.

PC Serial ports are shaped kind of like a "D" and have 9 pins not six.

depending on the hardware a serial port can use 2 wires,3 wires 4 wires most of the time they use 4 pins for "full duplex"
2 or 3 for a "Simplex" connection.
they may also cross some lines to make them "Always Ready"
some of the old Serial wires were named:

Clear to Send
Ready to Send
Data Set Ready

they did the "Handshaking" so that one side did not just "dump" on theother when it was not ready.

and then you had
Transmit
and
Recive

and Ground

but most of the time they only used 3 wires for small stuff like a scaner.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/97973ade36f04d718c7e9dfa00c36953#97973ade36f04d718c7e9dfa00c36953 Wed, 02 Apr 2008 18:54:57 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/97973ade36f04d718c7e9dfa00c36953#97973ade36f04d718c7e9dfa00c36953 figuerres 27 http://channel9.msdn.com/Niners/figuerres/Discussions/RSS Tech Off - USB cannot read barcode scanner
jellylychee wrote:

Matthew van Eerde wrote:
Why not get a USB barcode scanner?


Getting a new USB barcode scanner is my last resort. It is kinda expensive. I am still a student so.. Sad But if there is no other way, I have no choice.


what do you need to scan?

can you get access to a cheap all-in-one printer that can scan a page?

you *might* be able to scan from the page and hack soem code to read the bars, if it's a std. barcode they are not that hard to work out.

I do not know of any free libraries to read them but if you only need to read one format you can read the spec's on line for that format.

if it's school project you could try looking up the company that made that scanner and ask them for a new one... they just might go for it.

can't hurt to ask.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/9a78cc5e5cf34267b3139dfa00c369d1#9a78cc5e5cf34267b3139dfa00c369d1 Wed, 02 Apr 2008 19:00:01 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/9a78cc5e5cf34267b3139dfa00c369d1#9a78cc5e5cf34267b3139dfa00c369d1 figuerres 27 http://channel9.msdn.com/Niners/figuerres/Discussions/RSS Tech Off - USB cannot read barcode scanner
figuerres wrote:
9pin and 25pin Serial is just about gone.
and really USB is a 4 wire serial buss anyway...


I thought so too, until I had to connect this thing to a pc.

To the original poster: I have a usb scanner and the thing behaves just like a keyboard device. You don't really need it to see if it works with your application. With my device, every time I read a barcode it sends the characters to the control that has the cursor in it and then it sends the Enterkey code. Just find out how your scanner behaves (for example in notepad) and make sure your application can work with it.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/428216744f9448fbacbd9dfa00c36a63#428216744f9448fbacbd9dfa00c36a63 Wed, 02 Apr 2008 20:19:15 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/428216744f9448fbacbd9dfa00c36a63#428216744f9448fbacbd9dfa00c36a63 ZippyV 27 http://channel9.msdn.com/Niners/ZippyV/Discussions/RSS Tech Off - USB cannot read barcode scanner As figuerres has said, these devices usually 'inject' their data stream as though someone had typed it in via a keyboard. So for all intents and purposes, it is a keyboard.

But just to be sure, here are some links so you can confirm exactly what you have: [PS/2 connector]   [DE-9 connectors]

Also, whilst the keyboard data stream is a serialised one, it's not RS-232, which is what your suggesting when you talk about serial ports - which is probably why figuerres introduced the possibity of it being an RS-232 device - I'd doubt it.


You'll also need to explain what you mean by doesn't work. eg  it seems to be getting no power, etc.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/627816d2ccea43d196899dfa00c36af7#627816d2ccea43d196899dfa00c36af7 Wed, 02 Apr 2008 21:48:45 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/627816d2ccea43d196899dfa00c36af7#627816d2ccea43d196899dfa00c36af7 RichardRudek 27 http://channel9.msdn.com/Niners/RichardRudek/Discussions/RSS Tech Off - USB cannot read barcode scanner
RichardRudek wrote:
As figuerres has said, these devices usually 'inject' their data stream as though someone had typed it in via a keyboard. So for all intents and purposes, it is a keyboard.

But just to be sure, here are some links so you can confirm exactly what you have: [PS/2 connector]   [DE-9 connectors]

Also, whilst the keyboard data stream is a serialised one, it's not RS-232, which is what your suggesting when you talk about serial ports - which is probably why figuerres introduced the possibity of it being an RS-232 device - I'd doubt it.


You'll also need to explain what you mean by doesn't work. eg  it seems to be getting no power, etc.



Rich,the OP said he was connect it to a serial port on his desktop.
using a usb converter on his laptop.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/7d8dc94ac153487a9bb39dfa00c36b73#7d8dc94ac153487a9bb39dfa00c36b73 Wed, 02 Apr 2008 22:02:54 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/7d8dc94ac153487a9bb39dfa00c36b73#7d8dc94ac153487a9bb39dfa00c36b73 figuerres 27 http://channel9.msdn.com/Niners/figuerres/Discussions/RSS Tech Off - USB cannot read barcode scanner note the OP: my edit to add some blank lines Smiley

jellylychee wrote:
Hello everyone. I wish someone would take time to read and help me with my problem. You see, I have a barcode scanner.

Now, the scanner that I have has a serial port.


When I connect it to the serial port on my desktop, it is working fine.

The problem is, I have to do the programming part in my laptop.


My laptop does not have any serial ports, so I purchased a connector that will convert it to usb.
 
I tested the connector in the desktop, all ps/2 devices (ex. mouse) works fine.

But when it comes to the barcode scanner, the computer cannot read the device.

Which is weird.

It can read the device when I connect it to the serial port, but it does not read the device when I connect it to the USB via a connector or converter. Sad Any ideas?

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/c43d78e64346409b9c7b9dfa00c36bf3#c43d78e64346409b9c7b9dfa00c36bf3 Wed, 02 Apr 2008 22:05:02 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/c43d78e64346409b9c7b9dfa00c36bf3#c43d78e64346409b9c7b9dfa00c36bf3 figuerres 27 http://channel9.msdn.com/Niners/figuerres/Discussions/RSS Tech Off - USB cannot read barcode scanner
figuerres wrote:

jellylychee wrote:


The scanner has a

6pin male and female connector.

It did not come with a driver. I just borrowed it from my school for my thesis. They do not have a USB scanner sad to say.

.
.



starting to think this is a PS/2 keyboard wedge eh?

perhaps the OP has a PS/2 = USB adapter ??

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/bccde029e2b24a2da76b9dfa00c36c2f#bccde029e2b24a2da76b9dfa00c36c2f Wed, 02 Apr 2008 22:09:53 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/bccde029e2b24a2da76b9dfa00c36c2f#bccde029e2b24a2da76b9dfa00c36c2f figuerres 27 http://channel9.msdn.com/Niners/figuerres/Discussions/RSS Tech Off - USB cannot read barcode scanner
figuerres wrote:

figuerres wrote:

jellylychee wrote:


The scanner has a

6pin male and female connector.

It did not come with a driver. I just borrowed it from my school for my thesis. They do not have a USB scanner sad to say.

.
.



starting to think this is a PS/2 keyboard wedge eh?

perhaps the OP has a PS/2 = USB adapter ??



Yes, I'd surprised if it was primarily an RS232 device: [Barcode scanners]

Most of the ones I've seen are the keyboard-injection type devices, because that's the simplest way of doing it - no drivers necessary.

Now the wikipedia article does mention that a few of these devices do have RS232 interfaces. But the device still needs to get it power from somewhere.

The PS/2 interface has a 5 Volt supply, so that's the most probable source. But older, RS232-only devices typically scavenged their power from the RS232 interface itself.

But, those devices may not be able to derive enough power from a 'non-strict' RS232 interface - RS232 is suppose to be +/- 12 Volt signaling. But a lot of 'adapters' have 'customised' this standard, using much lower voltages, or not even using negative voltages.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/18ce17cc2d00493cb2529dfa00c36cb5#18ce17cc2d00493cb2529dfa00c36cb5 Wed, 02 Apr 2008 23:36:17 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/18ce17cc2d00493cb2529dfa00c36cb5#18ce17cc2d00493cb2529dfa00c36cb5 RichardRudek 27 http://channel9.msdn.com/Niners/RichardRudek/Discussions/RSS Tech Off - USB cannot read barcode scanner
RichardRudek wrote:
As figuerres has said, these devices usually 'inject' their data stream as though someone had typed it in via a keyboard. So for all intents and purposes, it is a keyboard.

But just to be sure, here are some links so you can confirm exactly what you have: [PS/2 connector]   [DE-9 connectors]

Also, whilst the keyboard data stream is a serialised one, it's not RS-232, which is what your suggesting when you talk about serial ports - which is probably why figuerres introduced the possibity of it being an RS-232 device - I'd doubt it.


You'll also need to explain what you mean by doesn't work. eg  it seems to be getting no power, etc.



Hi. I am sorry I got everyone mixed up. Sad It has a ps/2 connector. It is working fine when I connect it to the ps/2 port of my desktop. It can read the barcodes and send the data to the desktop. However when I use a ps/2 usb adapter converter (my laptop doesnt have a ps/2 port), my computer does not recognize the barcode scanner anymore. The adapter converter is working fine when I tried to connect other devices like a mouse.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/578bf90cccf043a0a7d59dfa00c36d35#578bf90cccf043a0a7d59dfa00c36d35 Thu, 03 Apr 2008 05:32:56 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/578bf90cccf043a0a7d59dfa00c36d35#578bf90cccf043a0a7d59dfa00c36d35 jellylychee 27 http://channel9.msdn.com/Niners/jellylychee/Discussions/RSS Tech Off - USB cannot read barcode scanner
jellylychee wrote:

RichardRudek wrote:
As figuerres has said, these devices usually 'inject' their data stream as though someone had typed it in via a keyboard. So for all intents and purposes, it is a keyboard.

But just to be sure, here are some links so you can confirm exactly what you have: [PS/2 connector]   [DE-9 connectors]

Also, whilst the keyboard data stream is a serialised one, it's not RS-232, which is what your suggesting when you talk about serial ports - which is probably why figuerres introduced the possibity of it being an RS-232 device - I'd doubt it.


You'll also need to explain what you mean by doesn't work. eg  it seems to be getting no power, etc.


Hi. I am sorry I got everyone mixed up.  It has a ps/2 connector. It is working fine when I connect it to the ps/2 port of my desktop. It can read the barcodes and send the data to the desktop. However when I use a ps/2 usb adapter converter (my laptop doesnt have a ps/2 port), my computer does not recognize the barcode scanner anymore. The adapter converter is working fine when I tried to connect other devices like a mouse.


no big.... we figured out what you had though... not bad eh?

I used to love it when some one would ask for "A BOX OF HARD DISKS" when I worked at a computer store....
they wanted 3.5 inch FLOPPY DISKS!
used to show them a HARD DISK and explain that even with the plastic it was a "FLOPPY DISK" Smiley

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/c4cf147919774d0b99499dfa00c36dbc#c4cf147919774d0b99499dfa00c36dbc Thu, 03 Apr 2008 05:45:46 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/c4cf147919774d0b99499dfa00c36dbc#c4cf147919774d0b99499dfa00c36dbc figuerres 27 http://channel9.msdn.com/Niners/figuerres/Discussions/RSS Tech Off - USB cannot read barcode scanner I think you'll find there here in POS world, RS232 is still very alive and kicking.

Most POS terminals can be configured to give a 5v / 12V supply out of their com ports, and for most scanners, there is also an option of an external PSU.


]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/262ff8bb51fc480d88e29dfa00c36e35#262ff8bb51fc480d88e29dfa00c36e35 Thu, 03 Apr 2008 06:57:54 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/262ff8bb51fc480d88e29dfa00c36e35#262ff8bb51fc480d88e29dfa00c36e35 John 27 http://channel9.msdn.com/Niners/jh71283/Discussions/RSS Tech Off - USB cannot read barcode scanner
jellylychee wrote:

RichardRudek wrote:
You'll also need to explain what you mean by doesn't work. eg  it seems to be getting no power, etc

I've re-quoted my earlier question.

jellylychee wrote:
Hi. I am sorry I got everyone mixed up.  It has a ps/2 connector. It is working fine when I connect it to the ps/2 port of my desktop. It can read the barcodes and send the data to the desktop. However when I use a ps/2 usb adapter converter (my laptop doesnt have a ps/2 port), my computer does not recognize the barcode scanner anymore. The adapter converter is working fine when I tried to connect other devices like a mouse.


Anymore ?

Does that mean the barcode scanner used to work on the laptop, but then stopped for some reason ?

If so, then [read through this post] (or even the thread), and see whether it sue to bad Device manager entries. Specifically what we're looking for will be any HIDs (Human Interface Devices).

Also, have you tried plugging in the desktop's keyboard along with the barcode scanner, like you would (I assume) with your dekstop ?


]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/df3e05acbd014a89a0009dfa00c36eb5#df3e05acbd014a89a0009dfa00c36eb5 Thu, 03 Apr 2008 09:06:03 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/df3e05acbd014a89a0009dfa00c36eb5#df3e05acbd014a89a0009dfa00c36eb5 RichardRudek 27 http://channel9.msdn.com/Niners/RichardRudek/Discussions/RSS Tech Off - USB cannot read barcode scanner
RichardRudek wrote:

jellylychee wrote:

RichardRudek wrote:
You'll also need to explain what you mean by doesn't work. eg  it seems to be getting no power, etc

I've re-quoted my earlier question.



Anymore ?

Does that mean the barcode scanner used to work on the laptop, but then stopped for some reason ?

If so, then [read through this post] (or even the thread), and see whether it sue to bad Device manager entries. Specifically what we're looking for will be any HIDs (Human Interface Devices).

Also, have you tried plugging in the desktop's keyboard along with the barcode scanner, like you would (I assume) with your dekstop ?




When I plug it in the ps/2 port, the  barcode scanner works. The barcode scanner is recognized by my computer. When the barcode scanner reads barcodes, I can see the output in my computer. I did this in my desktop.

The problem is, I want to work on my laptop. I have to because the rest of my family uses the desktop and I always do my work (programming) in school. But my laptop does not have a ps/2 port. So what I did was purchase a ps/2 usb converter adapter.

When I connect the barcode scanner to the converter adapter, and I connect the converter adapter to the USB port, that is where the problem begins. "USB Device Not Recognized". The converter adapter is working fine if I connect my ps/2 mouse and keyboard but it does not work when I connect the barcode scanner.

So to summarize, it works in the ps/2 port. But it does not work thru the use of the converter adapter.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/0a8856c7437147efa74a9dfa00c36f3b#0a8856c7437147efa74a9dfa00c36f3b Thu, 03 Apr 2008 13:03:46 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/0a8856c7437147efa74a9dfa00c36f3b#0a8856c7437147efa74a9dfa00c36f3b jellylychee 27 http://channel9.msdn.com/Niners/jellylychee/Discussions/RSS Tech Off - USB cannot read barcode scanner Have you tried rebooting the laptop when the device is connected. In ancient times you had to connect a device, then (re)boot the computer for it to recognize the new hardware.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/b708336d9c594d4d91a09dfa00c36fb0#b708336d9c594d4d91a09dfa00c36fb0 Thu, 03 Apr 2008 13:29:14 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/b708336d9c594d4d91a09dfa00c36fb0#b708336d9c594d4d91a09dfa00c36fb0 ZippyV 27 http://channel9.msdn.com/Niners/ZippyV/Discussions/RSS Tech Off - USB cannot read barcode scanner
ZippyV wrote:
Have you tried rebooting the laptop when the device is connected. In ancient times you had to connect a device, then (re)boot the computer for it to recognize the new hardware.


yes i did a couple of times already but still the device cannot be recognized

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/8d4929dc571a402388199dfa00c37027#8d4929dc571a402388199dfa00c37027 Thu, 03 Apr 2008 14:27:49 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/8d4929dc571a402388199dfa00c37027#8d4929dc571a402388199dfa00c37027 jellylychee 27 http://channel9.msdn.com/Niners/jellylychee/Discussions/RSS Tech Off - USB cannot read barcode scanner It's possible that the USB-PS2 converter you purchased is just a simple pass-through rather than a converter.  A proper converter would be detected as a USB keyboard in Windows and converts whatever it gets from the PS/2 device to the standard protocol used by USB keyboards.

What you're looking for is probably something like this:  http://www.newegg.com/Product/Product.aspx?Item=N82E16812107901.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/ed50ac4656ab4414a5159dfa00c370ac#ed50ac4656ab4414a5159dfa00c370ac Thu, 03 Apr 2008 16:21:33 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/ed50ac4656ab4414a5159dfa00c370ac#ed50ac4656ab4414a5159dfa00c370ac JonathonW 27 http://channel9.msdn.com/Niners/CannotResolveSymbol/Discussions/RSS Tech Off - USB cannot read barcode scanner
CannotResolveSymbol wrote:
It's possible that the USB-PS2 converter you purchased is just a simple pass-through rather than a converter.  A proper converter would be detected as a USB keyboard in Windows and converts whatever it gets from the PS/2 device to the standard protocol used by USB keyboards.

What you're looking for is probably something like this:  http://www.newegg.com/Product/Product.aspx?Item=N82E16812107901.


or if built for the PS/2 hardware interface it may be looking for the signal from a keyboard to hook onto....

or depending on some bit of what a real PS/2 port did that the converter is not doing....

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/9e226c20588b40ffa0209dfa00c37141#9e226c20588b40ffa0209dfa00c37141 Thu, 03 Apr 2008 18:45:59 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/9e226c20588b40ffa0209dfa00c37141#9e226c20588b40ffa0209dfa00c37141 figuerres 27 http://channel9.msdn.com/Niners/figuerres/Discussions/RSS Tech Off - USB cannot read barcode scanner Years ago I worked with a "wedge" PS2 barcode scanner.  It had an odd property that it HAD to have a real keyboard connected to the "outbound" port of the scanner, even if you weren't going to use it.  (IT  was reallty annoying to have an extra keyboard lying arround when the laptop keyboard worked just fine.)

I was wondering if you did the same thing I did.  Use it on your desktop with a "real" keyboard plugged in, and then use it on the laptop all by itself.  For me, plugging in a real keyboard fixed the issue.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/02e33c8cde954c9d890f9dfa00c371d8#02e33c8cde954c9d890f9dfa00c371d8 Thu, 03 Apr 2008 19:32:33 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/02e33c8cde954c9d890f9dfa00c371d8#02e33c8cde954c9d890f9dfa00c371d8 John Melville-- MD 27 http://channel9.msdn.com/Niners/John Melville-- MD/Discussions/RSS Tech Off - USB cannot read barcode scanner
jellylychee wrote:
When I plug it in the ps/2 port, the  barcode scanner works. The barcode scanner is recognized by my computer. When the barcode scanner reads barcodes, I can see the output in my computer. I did this in my desktop.


Yes, I already understood this.
jellylychee wrote:
The problem is, I want to work on my laptop. I have to because the rest of my family uses the desktop and I always do my work (programming) in school. But my laptop does not have a ps/2 port. So what I did was purchase a ps/2 usb converter adapter.


Yes, and I understood this as well.

jellylychee wrote:
When I connect the barcode scanner to the converter adapter, and I connect the converter adapter to the USB port, that is where the problem begins. "USB Device Not Recognized". The converter adapter is working fine if I connect my ps/2 mouse and keyboard but it does not work when I connect the barcode scanner.

So to summarize, it works in the ps/2 port. But it does not work thru the use of the converter adapter.


Ah, some details...

Did you see see my closing comment - I'll requote it (strike 2):

jellylychee wrote:

RichardRudek wrote:
Also, have you tried plugging in the desktop's keyboard along with the barcode scanner, like you would (I assume) with your dekstop ?


Why would that make any difference ?

Because the barcode scanner device is probably looking for the clock signal from the keyboard, so it knows how to set itself up, and be able to inject appropriately into the keyboard's data stream. From memory there were/are at least two keyboard clock speeds 6 and 8 MHz. Though I'd have to look that up, to be sure.

Have to go, I'll check back later this afternoon, or tonight..

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/077d57df68b54b3793ea9dfa00c3726e#077d57df68b54b3793ea9dfa00c3726e Thu, 03 Apr 2008 22:09:07 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/077d57df68b54b3793ea9dfa00c3726e#077d57df68b54b3793ea9dfa00c3726e RichardRudek 27 http://channel9.msdn.com/Niners/RichardRudek/Discussions/RSS Tech Off - USB cannot read barcode scanner
John Melville, MD wrote:
Years ago I worked with a "wedge" PS2 barcode scanner.  It had an odd property that it HAD to have a real keyboard connected to the "outbound" port of the scanner, even if you weren't going to use it.  (IT  was reallty annoying to have an extra keyboard lying arround when the laptop keyboard worked just fine.)

I was wondering if you did the same thing I did.  Use it on your desktop with a "real" keyboard plugged in, and then use it on the laptop all by itself.  For me, plugging in a real keyboard fixed the issue.


Well yeah I did this. But, now the barcode won't read right. I can type using the keyboard just fine, but the scanner does not scan right. The scanner beeps, but the output is just wrong.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/f0543cf72fa34e01850c9dfa00c37304#f0543cf72fa34e01850c9dfa00c37304 Fri, 04 Apr 2008 11:07:41 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/f0543cf72fa34e01850c9dfa00c37304#f0543cf72fa34e01850c9dfa00c37304 jellylychee 27 http://channel9.msdn.com/Niners/jellylychee/Discussions/RSS Tech Off - USB cannot read barcode scanner I had this problem too, when I scanned a barcode I got something like éçç§à&( Turns out the scanner was configured with a querty type keyboard. If you don't have the manual of the scanner, try changing the keyboard settings in Windows.

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/571d4e5af7ac406ca6649dfa00c3737c#571d4e5af7ac406ca6649dfa00c3737c Fri, 04 Apr 2008 12:48:48 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/571d4e5af7ac406ca6649dfa00c3737c#571d4e5af7ac406ca6649dfa00c3737c ZippyV 27 http://channel9.msdn.com/Niners/ZippyV/Discussions/RSS Tech Off - USB cannot read barcode scanner
ZippyV wrote:


I had this problem too, when I scanned a barcode I got something like éçç§à&( Turns out the scanner was configured with a querty type keyboard. If you don't have the manual of the scanner, try changing the keyboard settings in Windows.



although i am not so sure on how to do that i will research on it and try it out. thanks

]]> http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/c5a5dd339082470a9e2d9dfa00c373f4#c5a5dd339082470a9e2d9dfa00c373f4 Sat, 05 Apr 2008 16:45:45 GMT http://channel9.msdn.com/Forums/TechOff/262015-USB-cannot-read-barcode-scanner/c5a5dd339082470a9e2d9dfa00c373f4#c5a5dd339082470a9e2d9dfa00c373f4 jellylychee 27 http://channel9.msdn.com/Niners/jellylychee/Discussions/RSS