Rolling Your Own USB Devices?

greasyHacker asks: "Back in the old days when every computer under the sun had a parallel port, it was quite easy to whip up a simply parallel port device of some sort, and pretty easy to write software for it.. Now that USB is here and standard, I'd like to make use of the 'power of USB' and roll my own devices. Specifically I'd like to start with a simply interface box that allows me to control a number of simply on/off out/input channels - much like this. (Then maybe fulfilling some other ideas later).. Can anyone suggest where to get information on such a project, both the hardware and the driver side of things?"

Comments

USB in a nutshell

[BigT]

Here is a good description of USB that sort of digests the spec for you. It has lots of info about the device software and hardware.

-BigT