Not sure if this is a software Windows!! problem. But last year I got a Sparki robot this was based on the 32U4 controller and it worked fine for a few days, then I just couldn’t upload any code to it. I had installed all the right drivers, boards, etc.
Now I have my NEW Zumo 3204Oled robot and the same has happened again!! The code compiles OK but then I try to upload the code I get a message saying I don’t have access to the com port (USB/COM) Access denided!!! or programmer not found. I am the only user of this PC, Again think I’ve got the drivers right, etc.
Any help would be very useful…