27-10-2018, 01:19
(27-10-2018, 00:40)41south Wrote: Well I took the Arduino off the RX board (so as not to feed 5V anywhere it shouldn't be) and programmed it successfully via the ICSP header. The only hiccup was getting a verification error but the program definitely uploaded and is running.
The only problem when a sketch is programmed through the ICSP port is that you lose the bootloader. To be able to program trough the USB port again, first you should install a new bootloader via ICSP.
Have you checked serial communication? If the problem is a faulty serial to USB chip, you still don't have serial communication and can't connect to Cumulus or other software.