Connection problems between URsim docker and ROS2 without the real robot

I’m trying to connect URSim to the external control without the actual robot. I use docker
The process I’m running is:

  • ros2 run ur_client_library -m ur3
  • Open docker htt://
  • ros2 launch ur_robot_driver ur_type:=ur3 robot_ip:= launch_rviz:=false use_fake_hardware:=true

when I try to connect from the URSim I get the error

  • The conection to the remote PC at could not be estable. Reason: Conection refused

I am using virtuabox with ubuntu 22.04

thank you very much for the help

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