I have successfully tested my PIC16F1459 USB on veroboard
project by downloading the m-stack test firmware and getting
to enumerate on my laptop.
The approximate component cost is about £3 including veroboard
I will do some proper circuit diagrams in a few days time and
make a g+ posting about it.
Ben Dooks, http://www.fluff.org/ben/ bjdooks@googlemail.com