Serial monitor mirrors to all open sketches

why does the serial monitor output appear in all of my open sketches?

This makes zero sense to me.

Hi @desert_ratt. Serial Monitor prints whatever data is received on the port you have selected from the Tools > Port menu in Arduino IDE. So if you have the same port selected in multiple Arduino IDE windows, it is normal and expected that the Serial Monitor of each window will print the same data.

If you have multiple Arduino boards connected to your computer, you can select a different port from the Tools > Port menu in each IDE window and then you will see only the data from the selected port in each window's Serial Monitor.

Thanks, ptillisch!

I just recently began using v2 in earnest and this was new IDE behavior for me.

Thanks for the in-depth explanation.

You are welcome. I'm glad if I was able to be of assistance.

Regards,
Per

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