<launch>
        <node pkg="teleop_twist_keyboard" type="teleop_twist_keyboard.py" name="keyboard_teleop" output="screen">
            <param name="scale_linear" type="double" value="0.5"/>
            <param name="scale_angular" type="double" value="0.5"/>
            <remap from="cmd_vel" to="/turtlebot_controller/cmd_vel"/>

        </node>
</launch>