Serial on Notebook

Serial Console in the Terminal

Thu, 11 Jun 2026 10:42:43 +0100

Instructions on how to connect to a device over serial USB port in the terminal on Arch with either minicom or tio.

Beforehand, ensure your user is in these groups (if adding, reboot machine).
```
# adding your user to these groups
sudo usermod -aG dialout tty uucp
```

With minicom

Install the minicom serial communication program.
```
sudo pacman -Sy minicom
```
Connect to device over serial comms (here it is at /dev/ttyUSB0).

Serial Port Access on Arch

Sat, 30 May 2026 09:35:24 +0100

For access to microcontrollers, such as the ESP32, permissions are required to enable flashing devices etc. If having issues, but seeing the port connected, check the port first (in my example the port was /dev/ttyACM0):

ls -l /dev/ttyACM0
crw-rw---- 1 root uucp 166, 0 May 27 21:05 /dev/ttyACM0

Notice the group uucp has access, we just need to add ourselves to it.

sudo usermod -aG uucp $USER

A restart may be required for this to take effect.