ROS-Industrial(Hydro) Training Exercises 3.6

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Hi, all

I'm now following ROS-Industrial(Hydro) Training Exercises 3.6

I can finish the Exercise 3.6.1 which create a random motion for my robot.

Now when I try to do the next step, set a specific goal position, I had a problem.

I follow the instructions said: " copy the original example file to lesson_move_group_2, modify the relevant sections, and add the new lines to your CMakeLists.txt." after the catkin_make and source ~/catkin_ws/devel/setup.bash everything works just fine. Like this:

However, when I do rosrun lesson_move_group lesson_move_group_2

there is an error :

[rosrun] Couldn't find executable named lesson_move_group_2 below /home/viki/catkin_ws/src/lesson_move_group

which seems the lesson_move_group_2 doesn't build correctly.

Then I go to cakin_ws/devel/lib/lesson_move_group/ I found a file named "lesson_move_group_1" like a binary file. If I copy this lesson_move_group_1 file and rename it to lesson_move_group_2, then it can do rosrun lesson_move_group lesson_move_group_2. The robot will execute a random movement, just like runing the lesson_move_group_1.

So, I thought, catkin_make and source ~/catkin_ws/devel/setup.bash didn't build the binary file for lesson_move_group_2.

Is my suggestion correct? and if it is then what should I do?

this is the link of the tutorial: http://aeswiki.datasys.swri.edu/rosit...