C-R-M: USB data/packet monitor ?

We have one at work, but it was real money in the $500 - $750 range if I
remember right. I wanted to reverse engineer the protocol for a cheap
webcam, but they would not lend it to me... I looked around a little bit
for a cheap alternative but didn't find one. If you hear of something
good, please post it here!

Good Luck,
Bob

I found this on the net: http://www.hhdsoftware.com/
I downloaded the trial version and have barely looked at it, but it might be
worth a glance for ya.
Regards -
JCD

The easiest way is to hack into the driver layer on your operating
system if you have access to the PC. There are several packages out
there, but they are not much cheaper than hardware solutions. If you are
on Linux, you can go directly into the USB drivers and add some logging
code though.

Also, there are several software solutions for running USB 1.1 on Atmel
chips. If you speak Atmel Machine Code, you can modify those to only
lurk and log instead of pretending to be a USB device. That would cost
you around $10 in hardware...

I don't have firsthand experience with this but it is my understanding
that some linux driver authors use vmware to reverse engineer usb
devices -- the manufacturer's driver runs inside an instance of
windows in vmware and operates the usb device while the linux host
sniffs usb traffic.

-chris.