Still trying to get a batch of Nanos working, using a USBTinyISP. I have no problem programming the bootloader, and the sketch compiles without error, but I always get a "Board not available" error when I try to download the sketch. If I edit the preferences file to specify a COM port, then the error I get is "Board at COMn port is not available". If I specify USBTinyISP, why is it even looking for a COM port??
I've never had a problem programming ProMinis with this USBTiny. Is there some setting I have wrong?
Regards, Ray L.