How to test a USB OBDII connection to your e-up / citigoe / mii-electric from Linux

These instructions have been tested on Ubuntu 20.04 LTS, they should work with most Ubuntu and Debian derived distros.

open a Terminal window
install the serial terminal application minicom (if not already installed):

sudo apt install minicom
connect your OBDII adapter to your laptop and to your car. Turn the ignition of your car on.
check that Linux has recognized the OBDII adapter and created the serial device for it:

ls -la /dev/ttyUSB0
run minicom in the Terminal window with the following command:

minicom -b 38400 -D /dev/ttyUSB0

for a Scantool OBDLink SX USB OBDII adapter run the following command instead:

minicom -b 115200 -D /dev/ttyUSB0
in minicom type the following commands seen below marked in red, check that the replies match those seen below: