Com3 there is no windows form for Adian

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

What to do?

winforms arduino
  • 1

    Are you using what programming language? Try creating a [mcve] to help us with your question

  • You may want to publish your question here: https:/arduino.stackexchange.com/

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