Hello, I feel guilty about creating a new topic, but I’ve looked everywhere and haven’t found an answer yet.
When I plug in my Arduino with the USB connection it uses COM6 and the L lights up once and turns off, and the ON led is always on.
My problem is that I get stuck when uploading a sketch. When I try to upload, the Tx led lights up (not blinking; completely lit) and it gets stuck on “Uploading…”. If I cancel it and start again, I get the error:
processing.app.SerialException: Serial port ‘COM6’ already in use. Try quiting any programs that may be using it.
Alternatively, if I plug in the Arduino and open the serial monitor from the IDE, the Tx lights up and I get a constant stream of data, that corresponds to the voltage in pin A0 (in a range from 0 to 256) (see attachment)
I remember I did a project once where I was measuring the voltage from A0 and did something accordingly. I didn’t use the Arduino for a long time (5-6 months) and suddenly I can’t upload anything anymore and I think it’s stuck on the program I made a long time ago.
Any help will be greatly appreciated!