description.launch.xml - 8BitsCoding/RobotMentor GitHub Wiki

<launch>
  <arg name="model"/>
  <arg name="urdf_file" default="$(find xacro)/xacro --inorder '$(find turtlebot3_description)/urdf/turtlebot3_$(arg model).urdf.xacro'" />
  <param name="robot_description" command="$(arg urdf_file)" />
</launch>