Granting Permission on the Serial Ports: Linux

The serial ports that the Arduino uses are normally restricted to administrators, so you will need to grant yourself permission to use those serial ports. Do this by adding yourself to the dialout group by typing:

sudo usermod -a -G dialout $USER

you will be asked to provide your password to authenticate. After typing your password the command is finished, but it won’t take effect until the next time you restart the session, so either log out and back in again, or reboot.

Now that you’ve installed the software, you need to select the proper port to communicate with the Arduino Uno.