Using ROS Kinect + Gazebo 7 I'm controlling an AR.Drone. Everything works fine, I can move the drone using the teleop_twist_keyboard or using a Python script done by me, but when I try to see the cmd_vel topic (rostopic echo), this happens:
rostopic echo /quadrotor/cmd_vel
WARNING: no messages received and simulated time is active.
Is /clock being published?
/clock is being published, and /quadrotor/cmd_vel is the name of the topic. What can I do? To move the drone using the teleop_twist_keyboard I use the following:
rosrun teleop_twist_keyboard teleop_twist_keyboard.py cmd_vel:=/quadrotor/cmd_vel
and I can also publish in that topic like:
rostopic pub -r 10 /quadrotor/cmd_vel geometry_msgs/Twist '{linear: {x: 0.1, y: 0.0, z: 0.0}, angular: {x: 0.0,y: 0.0,z: 0.0}}'
I hope you can help me. Thanks!
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