Jerry, Gary & Bo,
Thanks for the responses - much appreciated. While I did a lot of checkout of the Nano when I did the mod to it to ensure it was worthy of being installed in the setup. I do have to review why I'm having the issue with the Nano I have to get to the root cause. The PC does see it as a 'COM4' device, so it's reading the traffic off the USB serial interface fine - but after that it's not able to communicate with the microcontroller enough to function with Erik's Windows app for the TinySA - the PC program could not see it as a COM4 device - didn't show up in the list. I thought I'd try a reload to see if it was possible amongst other troublehooting last night). A LOT of errors when it tried to reprogram the device in-situ.?
I will take it off the board and see if I can get to the bottom of why it's not functioning right and will post a correction if I can make it play. Please do stay tuned...
73 de Marty, KN0CK