Com3 there is no windows form for arduino

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I'm trying to create a program that sends information from windows form to arduino but an error says that com3 (the port I'm using) does not exist. We are using the xy coordinates of the mouse to control two servo motors. Everything works fine, but after a few seconds the program stops working and a message appears saying that com3 does not exist

What to do?

    
asked by anonymous 15.03.2018 / 15:05

0 answers