However, as a HID keyboard emulator, it is awkward to send data to the PC on a keystroke by keystroke method. provides a great enhancement and is easy to utilize, especially the samples he provides. Rancid Bacon's V-USB library for Arduino Google Code Archive - Long-term storage for Google Code Project Hosting. They all work, they are all fun projects, but they do require that you drop down to C code and use the command line to compile, link, and flash the '85. I have built many V-USB toys using the ATtiny85.