| ROS Resources: Documentation | Support | Discussion Forum | Index | Service Status | ros @ Robotics Stack Exchange |
Hi all, I have a turtlebot 2. I roslaunch "turtlebot_bringup minimal.launch" on turtlebot and "turtlebot_teleop keyboard_teleop.launch" on my workstation after ssh into turtlebot PC. There were no errors. Afterwards I press "w" which increase only linear speed by 10%, but nothing happend. Can anyone tell me why? Thanks!
I guess this problem has little value to learn, because my package is installed from turtlebot officially, which might be different from you all. Problem is simple: after I rxgraph, I found problems in nodes connection, and then I check the launch file, found errors in it. I corrected it and rosmake that package again. Or maybe I did something wrong to turtlebot_teleop package previous(I think this possibility is tiny).
Please make sure three things.
launching keyboard teleop node without configuration would not know how to access turtlebot..
ROS_HOSTNAME is an optional environment variable that sets the declared network address of a ROS Node or tool.
Check rostopic list and rostopic info to make sure keyboard teleop is publishing and turtlebot is subscribing to the same topic.
You might want to set up your network properly instead of fiddling with ROS_HOSTNAME: http://wiki.ros.org/ROS/NetworkSetup
Hi demmeln and jihoonl, sorry for the late reply. Problem has been solved. After running rxgraph, I found problems in turtlebot_teleop package, and corrected it.
I also want to know the problem in turtlebot_teleop package, because my turtlebot2 works normally with a turtlebot_teleop package on Hydro.
After I download a package from source and compile it with catkin_make, I moved a turtlebot two weeks ago. I guess a problem of setting as jhool answers. But, Yantian_zha said to all, "I found problems in turtlebot_teleop package" so, I wanted to know the problem.
@Yantian_Zha: Thanks for the update. Please mark this as being solved by accepting an answer.
@Yantian_Zha: Thanks for giving us some information and the update!
Asked: 2014-03-28 19:44:12 -0500
Seen: 6,856 times
Last updated: Apr 01 '14
ROS Answers is licensed under Creative Commons Attribution 3.0 Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.
do you launch both in seperate shells ssh'ed to the turtlebot? Or is the teleop on the workstation without ssh?
Hi Demmeln, I cannot catch you, because even without SSH, and just launch the keyboard_teleop.launch might get the right outcome, I guess. If I'm wrong, pls point it out, thanks!
It should work, it is just not quite clear how exactly your setup looks like. So you have two terminals, one ssh and roslauch the minimal.launch, and one without ssh with the teleop launch? Open a 3rd terminal. What does `rosnode list` output? What does `roswtf` output?