turtlebot3_gazebo package not publishing on /scan

asked 2020-12-27 02:51:47 -0500

updated 2020-12-27 03:20:19 -0500

I am launching a Gazebo world using roslaunch turtlebot3_gazebo turtlebot3_world.launch. However, when I run the command rostopic echo /scan in the terminal window, I get the following message -

WARNING: no messages received and simulated time is active.
Is /clock being published?

How can I make Gazebo publish to /scan?

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Did you change any thing on turtlebot repo or it is orginal because if you changed something on urdf maybe you can deleted scan options

bekirbostanci gravatar image bekirbostanci  ( 2020-12-27 08:49:30 -0500 )edit

I deleted the entire turtlebot3 package, and re-built it from source. Same issue. It is weird because everything was working fine a couple of days ago.

skpro19 gravatar image skpro19  ( 2020-12-27 09:10:50 -0500 )edit

Firstly you can check tf tree. Also I want to ask one more question. Does your simulation work or it gives some error ?

bekirbostanci gravatar image bekirbostanci  ( 2020-12-27 09:18:50 -0500 )edit