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ROS differential drive controller does not publish TF's for wheels

Hi

ubuntu: 12.04 64biz gazebo: 2.0.0 ros: hydro

I have a modelled pioneer3DX (not the one from the server) and I am using a URDF file described by xarco to generate a robot description for ROS and Gazebo but it looks like that gazebo/or the ros plugin is not publishing the tf's for joints with a continuous joint type.
The problem is now that rviz shows the wheels on a incorrect pose and I have incorrect tf.
My question is now who should publish this tf's the differential_drive_controller plug-in? I would love to up-load an image and the workspace but my karma is to low :-)

Greetings Markus