how can I upolad to different sketch in two different arduino from the same computer (IDE)?I have arduino a connect in “COM4” and arduino b conenct to “COM 12”.
when I upload one the other forget the program or stop to do what it was doing.
One arduino was running the serial port, after I uploaded the other arduino and when I went to see the serial monitor of the first one it appears this error
Error opening serial port ‘COM4’. (Port busy)