OC USBKeys card not recognized in windows 7

[Jasmckee]

Hi Jason,
If this is a kit make sure that you have the correct value of resistor fitted to R1 R2 R3. Measure them to make sure. I built a usb i/f(not usb keys) and had fitted incorrect resistors that bias the data lines. With no chip in the board my card would say it was not recognised, till i fitted the correct resistors.
If you need confirmation on chip numbers (74hc541) have alook at their video. The number you need to wory about is 74HC541.
Can you give us hi res pic?
Hope this helps.
Les
P.S do you still have your TRir 4 for sale.

Hi Les,

thanks for the idea, i will go and check the resistors now, you have confirmed what i thought about the ic's they are the correct ones supplied. i would have assumed that the resistors would be the corect ones that they supplied with the kit but i will check them anyway.

and yes i do still have the track ir for sale

Jason

edit: jsut checked all the resistors, capacitors etc, they are all the correct values, checked and rechecked the solder, still no go

[iwik]

Jason,
Have you tried it on another pc. One that hasnt had it lugged into.
Are you able to photograph both sides of pcb, we maybe able to see someting wrong.
Les

[Jasmckee]

Hi Les,

sorry for the late reply, i have attached some pics of the card here,








Let me know if anything jumps out, also tried it in a computer that it haddn't been plugged into again with no luck, this pc was running win 7 32 bit, with no other usb devices plugged into it

thanks

Jason
(kiwi in Oz, go the all blacks!!!)

[fordgt40]

Jason

The 40 pin connector has been soldered in the wrong way around. Check the assembly video as the notch should be facing towards the USB connector!

Sorry, good luck!

David

[Jasmckee]

Jason

The 40 pin connector has been soldered in the wrong way around. Check the assembly video as the notch should be facing towards the USB connector!

Sorry, good luck!

David

that should not have any relevance on it as the pins are not connected to anything at the moment, i will unsolder it and spin it around, but i don't think it will make a difference. will let you know

Jason

[Jasmckee]

hi david,

i have swapped the 40pin connectore around, still no go, worth a shot i guess

i am windering if maybe the PIC has lost it's programming somehow, i am clutching at straws now

Jason

[fordgt40]

Jason

The only other suggestion I can make, if you have not done so already, is to go over the all the soldered joints again with just the iron tip to make sure there are no dry joints. Just one other point - you have soldered the power connector in the wrong way round. Not a problem in itself, but could be later if you use other OC cards as it would be easy to get reverse polarity by mistake

Regards

David

[iwik]

Hi Jason,
I agree with david again, double check you joints and in particular meter out the ciruit between usb connector data +-.
i tried to see what would happen with a blank pic in my servo bd, no message response. However if you want to satisfy yourself.
Plug your USBkeys pic into your usb expansion bd win 7 may then want to install driver, this recognition can be funny. then run USBcheck.
Definitely you should be able to put your Keys pic into the expansion card and USB check will show iocards usb.
Second thing is to make sure you are not using an usb extension cord. Try another cable directly in if you havnt already.
Im still tending to think its an assembly problem. If you exhaust everything and want me to have a look for you then let me know
and you can shoot it across the ditch. Im not sure what equipment you have or experience.
Hope this helps.
Les

[Jasmckee]

Hi Les and David,

i have rechecked all my joint, and swapped the power plug to make it the same as everything else.

also tried your sugesstion of putting the usbkeys ic in the usb expansion, as soon as i plugged in the usb expansion with the usbkeys ic in it, windows would noit recogonize the device, and usb check failed to recognize it either, put the usb expansion ic back in the expansion card, everything works again.

would this confirm that maybe the usbkeys ic is shot??

thanks again for you help

Jason

[iwik]

Jason,
No not so. I found win 7 with usb detection funny. Can you put USBkeys pic in Usb expansion pcb and then plug this into a port that USB expansion has not been in before. When i did this it wanted to install a driver, then it was happy.
You could also put USB expansion pic into USBkeys pcb and check. After this point, you could take your two cards with the swapped chips and try in another pc.
Why i say this is, windows has always been funny with usb detection, i have had some strange goings on. Sometimes the more you play the more
confused Windows gets. So don t be in a hurry to discount anything. To recap if USBkeys pic is faulty then it should fault in both pcbs and USB exapnsion
should be happy with both ic's.

les