$ export TURTLEBOT3_MODEL=${TB3_MODEL}
$ roslaunch open_manipulator_with_tb3_tools slam.launch use_platform:=true
$ ROS_NAMESPACE=om_with_tb3 roslaunch turtlebot3_teleop turtlebot3_teleop_key.launch
$ ROS_NAMESPACE=om_with_tb3 rosrun map_server map_saver -f ~/map