roscore
roslaunch turtlebot3_bringup turtlebot3_robot.launch
roslaunch turtlebot3_teleop turtlebot3_teleop_key.launch
roslaunch turtlebot3_bringup turtlebot3_remote.launch
rosrun rviz rviz -d `rospack find turtlebot3_description`/rviz/model.rviz
Quit rviz on step 5 before run this step
roslaunch turtlebot3_slam turtlebot3_slam.launch slam_methods:=gmapping