The set of ROS packages for four wheeled mobile robot Tacbot.
The robot was described in following page.
http://mdrwiega.com/the-four-wheeled-mobile-robot-with-the-autonomous-navigation-system-in-ros/
More information about the only mobile platform (without autonomous navigation system) could be found below.
http://mdrwiega.com/four-wheeled-mobile-robot-with-raspberry-pi/