i am using arduino nano but not uploading sketch , it stuck
also this error comes out
avrdude: ser_open(): can't open device "\.\COM4": Access is denied.
Failed uploading: uploading error: exit status 1
i try so many times to fix it from youtube , google but not resolve
with arduino mega2560 works well but with Arduino Nano sketch not uploading
Problem with the COM port access is the OS level.
Check the status of the connected Nano in your OS device manager first. Windows, right?
Is the correct driver installed? If Mega works it does not mean Nano should work with the same driver. It depends on the USB/serial chip on the board.
Also OS, antivirus or another APP can disable the access to the port.
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thank you for reply, yes i fix it, my bluetooth was on i think Bluetooth and arduino interfare together at same port. so now its fine
bluetooth off on laptop
You can set different number to the COM port.
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yes i am gonna do because it waste lot of time to fix this small thing
thank you
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