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I've just started working with ROS and I'm working through the beginner's tutorial. I am using Ubuntu 11.10. I'm at "Understanding ROS Topics"1.1.2 and when I implement rosrun turtlesim turtle_teleop_key the turtle won't move around with my arrow keys. Is there anything I need to do to set my keys so they will run the turtle?
Thanks, Gene
Hi, The terminal which has
rosrun turtlesim turtle_teleop_key
running should be the active window on the desktop for it to drive the robot. I think this is what is missed. If not you have to post the changes if any that you made or any error that you are getting.
Hope this helps, Karthik
Thanks for the answers. It turns out, as I discovered about 15 minutes after I posted the request that I kept making the turtle terminal the active window and not the "turtle_teleop_key" terminal window. When I made the "turtle_teleop_key" terminal active everything worked fine.
As others already said, you need to make active (by clicking on it) the window where you launched
rosrun turtlesim turtle_teleop_key
But also, another source of error could be that you are not sourcing correctly your environment.
Indeed, I needed in the terminals I was using:
source /opt/ros/kinetic/setup.bash
source ~/catkin_ws/devel/setup.bash
I hope this will help someone
You can also check if velocity commands are sent on the cmd_vel topic by:
rostopic echo /cmd_vel
Asked: 2011-12-21 02:39:25 -0600
Seen: 4,105 times
Last updated: Mar 05 '20
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