I am getting this message when trying to upload a sketch to the duinotech nano board. I have had no trouble with the uno r3 board. The upload doesn't complete. I also get the message "stk 500 get sync not in sync.
In device manager under ports i have 2 showing.
- arduino uno (com4)
- usb serial port (com3)
Is there a conflict here? should I remove one of the ports in device manager?