liudr:
Good points Ray, especially teaching! I was just thinking that I have gone through too many Arduinos when doing builds and my com port number goes up to some large number, which I want to reduce.
I have my own VID/PID pairs I often use for playing with V-USB, you cannot believe how screwed I can make Windows! Utilities like USBview.exe & SniffUSB,exe are helpful.
Ray