QUESTION ABOUT SENSOR on REEMS ARM

Hello, i am not very familiar with Ros and Gazebo I want to know please, how do I add sensors on a robotic arm REEMS? This is what I have? I have an error : the topic is empty.

true 30.0 testCollision true 100 test_bumper world

Asked by cynthia on 2015-01-28 05:34:02 UTC