**6) Try to run the simulation**
$~/turtlebot_ws$roslaunch turtlebot_gazebo turtlebot_world.launch
get the follwoing error message
[turtlebot_world.launch] is neither a launch file in package [turtlebot_gazebo] nor is [turtlebot_gazebo] a launch file name
The traceback for the exception was written to the log file
**7) Run the Check installation tool "roswtf"**
an get the following result:
Loaded plugin tf.tfwtf
No package or stack in context
Static checks summary:
No errors or warnings
Beginning tests of your ROS graph. These may take awhile...
... done analyzing graph
running graph rules...
... done running graph rules
Online checks summary:
Found 1 warning(s).
Warnings are things that may be just fine, but are sometimes at fault
WARNING The following node subscriptions are unconnected:
Can somebody help me to fix this. Maybe I have forgot something.
I have to admit, I am new in ROS, but I have already read and execute the beginner_tutorials,
which has worked fine for me.
[Discourse.ros.org] [TurtleBot] Try to get turtlebot running failed (need help)
Thanks for the detailed question. However we ask for debugging questions on http://answers.ros.org That's a website optimized to get you your answers whereas discourse is focused on announcements and discussions.
Please reask your question there.
Having read your post, here are some tips to improve your question. Please check that you're putting the turtlebot source in the `src` subfolder of your workspace. And be sure to build after you checkout the source. Also you don't appear to be checking out the `turtlebot_simulator` repository which has the `turtlebot_gazebo` package. You may also want to look at the output of `rospack list`.
I'd also suggest that for getting the demo running you simply use the binary debian packages instead of trying to build it from source. You can just apt-get install `ros-kinetic-turtlebot-simuator` and the whole demo will be installed.