Hello everyone! I'm facing a very serious issue. I opened Arduino IDE, connected my Arduino Uno, and encountered this error, even though everything was working fine before. I tried reinstalling Arduino IDE, but the problem persists. [IMG_20240330_233420]

[image] xvalero55: I'm running Windows 7 This was the key information that allowed me to reproduce this mysterious problem. The Serial Monitor feature of Arduino IDE 2.x is only a graphical user interface. The actual communication with the Arduino board via the computer's serial port is hand…

Error in port monitor in Arduino IDE 2.1.1

Development Tools IDE 2.x

ptillisch July 6, 2024, 3:16pm 13

You are welcome. It is unfortunate that it took us a long time to figure out the cause of the problem, but at least we have a solution now.

Regards,
Per

1 Like

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Error in port monitor in Arduino IDE 2.1.1

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