Ros-core2-client issue

I’ve got a problem to communicate with my Rosbot, after investigation it seems that there is a problem with ros-core2-client.
I’ve try this only command:
/opt/husarion/tools/rpi-linux/ros-core2-client /dev/ttyCORE2

and the response is:

Traceback (most recent call last):
File “/opt/husarion/tools/rpi-linux/ros-core2-client”, line 39, in
from rosserial_python import SerialClient, RosSerialServer
File “/opt/ros/kinetic/lib/python2.7/dist-packages/rosserial_python/”, line 1, in
from SerialClient import *
File “/opt/ros/kinetic/lib/python2.7/dist-packages/rosserial_python/”, line 51, in
import diagnostic_msgs.msg
ImportError: No module named msg

Is there someone who know what happen ?

Hi Baptiste,

Can I ask you to add new GPG key (using this manual) and execute these commands in terminal:

sudo apt update
sudo apt dist-upgrade

It should resolve your problem.

Best regards,

Hi Hubert,

I tried your commands but the problem still intact.


Hi Baptiste,

I did a lot of tests, but I could not reproduce your problem and I do not know how to fix it. The fastest way to resolve your problem will be flash SD card with new image. If we don’t facing a hardware issue it will work. Could you flash your card following tutorial from here?

Please let me know the results.

Best regards,

Hi Hubert,

Sorry for the very long delay, I forget to answer.
I flashed another SD card and the Rosbot works fine. I don’t know what happened.

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