I am running Ubuntu for the first time by booting from a USB drive. Now I have plugged in a USB-to-serial converter which has been recognized and automatically added as /dev/ttyUSB0.
How do I access /dev/ttyUSB0?
11 Answers
Use one of screen's lesser known features:
screen /dev/ttyUSB0busybox microcom -t 5000 /dev/ttyUSB0Source:
You could use tio - a simple tty terminal I/O application:
tio /dev/ttyUSB0See
1you can use ckermit also. It should be in the repository. After installing it create a file in your home directory called .mykermrc then add the 5 following lines:
set line /dev/ttyUSB0
set flow-control none
set carrier-watch off
set speed 115200
connect parameters can be adjusted as necessary.
save the file.
to start it
sudo kermit You can use putty. Its an ssh/serial/telnet client for Windows and Linux. You can download it from
You can use picocom, it is a minimal dumb-terminal emulation program. Basic usage is something like this (change 11520 to the desired baud rate):
$ picocom -b 115200 /dev/ttyUSB0You have all the options you may want from a dumb-terminal program, like stop bits, parity, local echo, carriage return / line feed / backspace / delete / tab translation, X/Y/Z-modem and ASCII transfer integration, etc.
See man picocom and picocom --help for further information.
Needed Mint 17.1 to talk to my Arduino, after a little chasing around, it turns out that your user must be part of the dialout group to use the tty. This should apply to Ubuntu as well. You can do so either by running the command:
sudo usermod -a -G dialout usernameOr graphically, by using:
Administration → Users & Groups → Manage Groups
In which case you would go to the line for dialout, check the properties to ensure that username is ticked, if not username must be added.
This worked for me and by the look of lots of posts others have had the same problem.
1I was using puTTY to connect to the serial ports. But don't forget to add your user to dialout: sudo adduser <username> dialout then reboot the system.
After that, you can use puTTY for serial connections such as /dev/ttyUSB0.
Or
minicom -D /dev/ttyUSB0If you need to configure it first, then
minicom -sIf you're wondering where's the meta key in MacOS, you will need to plan an escape. For other options, -h for help.
Using Lucid and a Dynamode USB to RS232 cable:
Plugged it in
ran kermit
set line /dev/ttyUSB0 <<-- mind the capitals/lowecase
connect
set speed 9600
...and successfully connected to an RS232 port on an OpenVMS server.
Tio without GUI or CuteCom with GUI.
