Connect to /dev/ttyUSB0 without sudo

Hi, I want to communicate with an USB/serial device. I need to use sudo to make it work.

On Ubuntu I add an udev rule with the plugdev group, but this group doesn’t exist in Arch.

I created an udev rule, just without GROUP=“plugdev”, but I still have to use sudo.

How can I enable the user to use the com port without sudo?

  1. Check which group owns this device.
    ls -la /dev/ttyUSB0
    For me it is uucp group.

  2. Become part of this group.
    sudo usermod -a -G uucp $USER

  3. Log-out and back in.

Now you should have read/write access to this device.


log out and log in does the trick. :man_facepalming:

Thanks for the help

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Glad you got your solution so fast. They are pretty smart here.

I just wanted to take the time to welcome you @rustasian aboard the good ship :enos:

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