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

repwoc June 27, 2024, 11:15am 11

Thanks for the explanation. Makes perfect sense.

1 Like

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Error in port monitor in Arduino IDE 2.1.1

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