Hi,

I am trying to operate the simple differential drive robot but it is not moving in Gazebo. I precisely follow this tutorial http://www.generationrobots.com/blog/en/2015/02/robotic-simulation-scenarios-with-gazebo-and-ros/ but without success. The robot is spawn in Gazebo and on the rosservice list I have both the /controllermanager and the controllerspawner. I have checked twice the files and everything looks to be ok for me, but I am NEW into Gazebo and ROS and I do not know what else could be wrong. Any help suggestion is welcome. Thanks in advanced!