Can not subscribe any message from topic "/ridgeback_velocity_controller/odom" about ridgeback

[tonybaltovski]

Are you getting any errors when this is starting up? For Indigo, you could do sudo tail -n 100 /var/log/upstart/ros.log. For Kinetic, sudo journalctl -fu ros.

[WshgL]

Are you getting any errors when this is starting up? For Indigo, you could do sudo tail -n 100 /var/log/upstart/ros.log. For Kinetic, sudo journalctl -fu ros.

Thanks for your reply,

I get the flowing message from sudo journalctl -fu ros

12月 18 21:32:07 ridgeback ros-start[1035]: Warning: TF_OLD_DATA ignoring data from the past for frame front_rocker_link at time 2.48303e+09 according to authority unknown_publisher
12月 18 21:32:07 ridgeback ros-start[1035]: Possible reasons are listed at http://wiki.ros.org/tf/Errors%20explained
12月 18 21:32:07 ridgeback ros-start[1035]:          at line 277 in /tmp/binarydeb/ros-kinetic-tf2-0.5.20/src/buffer_core.cpp

I want to provide more information:

I downloaded the latest system installation image from here. And then install it into my Ridgeback.
After install the Ubuntu 16.04, I am troubled by a problem:
Sometimes ridgeback can start properly, but sometimes, its indicator light will remain "solid red" and then automatically power off quickly. About 50% of the two cases.
But because at least there is a time to successfully start the robot, I temporarily ignored this problem.

Then the another problem is this issue.

Are these two problems related to each other?

Look forward to your reply, thank you very much!
Best regards

[WshgL]

Are you getting any errors when this is starting up? For Indigo, you could do sudo tail -n 100 /var/log/upstart/ros.log. For Kinetic, sudo journalctl -fu ros.

I have solved this problems by replacing the ros package in the clearpath repository with the latest ros package on github.

But I am troubled by the another problem with WIFI connection.
Please refer to issue #24 in ridgeback_robot

[tonybaltovski]

@wilsonn-leong when did you install the image? I believe this is most likely an ABI issue with ros-controls.

[WshgL]

@tonybaltovski
I download the image from this repertory, the latest version 0.3.4. I installed this image a week ago. The ros package in the clearpath repository is automatically downloaded and installed during the installation process. I have solved this problems by replacing the ros package in the clearpath repository with the latest ros package on github.