I really like the 45/85 AVR, it's pretty powerful in a tiny (sic) DIP 8 package for less than $2. I already built a USBtinyISP with it and it works reasonably well(it stutters sometimes).
After having found several references to a USB-serial implementation, I stumbled upon this page that has an USB to serial application described in detail.
Would it be feasible to do this and obtain USB-serial connectivity to a home-grown controller? For example if I were to use the ATtiny85, connected to USB and to the TX/RX pins of an ATMEGA328P, would it work for monitoring Serial on the ATMEGA?
BTW, this post touches on a similar issue.
Thanks for any comments.