I want to build something to help me learn to understand USB! Something I can do to tie together theory and the real world. But Mike probably has it about right, BitWhacker looks to be a good resource.
Nigel, that's a good one - I said I wanted something that could appear as a Linux character device so I can read and write it. Windows driver indeed grumble grumble....
Scale of 1 to 10 - LoL! But I can buy a ready made USB to serial converter, so the only challenge there is creating a RS232 interface, not what I had in mind at all. So what is there between <1 and >50?
I'll have a look at the Microchip site. I found a couple of tutorial sites to read through too. Should keep me busy for about, ooh, let me see now, er, forever...