FAQ.md

Arduino Uno/Mega/Duemilanove is not detected

When you run arduino-cli board list, your board doesn't show up. Possible causes:

• Your board is a cheaper clone, or
• It mounts a USB2Serial converter like FT232 or CH320: these chips always reports the same USB VID/PID to the operating system, so the only thing that we know is that the board mounts that specific USB2Serial chip, but we don’t know which board is.

What's the FQBN string?

For a deeper understanding of how FQBN works, you should understand Arduino Hardware specification. You can find more information in the Arduino platform specification.