I cant recieve any thing in /scan topic

General Support
2

@mds1990
Something must be publishing to the /scan topic before you can echo it:

  • For the simulation, you need to start the simulation with roslaunch realrobotlab main.launch first. It’s the simulation that publishes to the /scan topic.
  • For the real robot, this might be a bug in the robot. Please follow this topic for updates on that:

PS: Are you doing the ROS 2 or ROS 1 course?