update

config/twist_mux.yaml

@@ -13,4 +13,3 @@ twist_mux:
         topic   : cmd_vel_joy
         timeout : 0.5
         priority: 100
-    namespace: "/rmp"

launch/robot_joystick.launch.py

@@ -35,8 +35,8 @@ def generate_launch_description():
             package="twist_mux",
             executable="twist_mux",
             parameters=[twist_mux_params, {'use_sim_time': False}],
-            remappings=[('/cmd_vel_out','/diffbot_base_controller/cmd_vel_unstamped')],
-            namespace = "/rmp"
+            remappings=[('/cmd_vel_joy','cmd_vel_joy')],
+            namespace = namespace
         )
     
     return LaunchDescription([