https://github.com/AuTURBO/ros-app-tb3-voiceorder
This module support below funtion.
funtion list
 - Control Turtle Bot by voice, Support language is English and Korean
 - Control Turtle Bot by Joy Stick.
 - Display Turtle Bot Camera View, You can modify Topic name of camera view to fit your turtlebot at application UI.
   Support Datatype is sensor_msgs.CompressedImage. Default topic name is "/ camera1 / image_raw / compressed"

JoystickOnlyView Class does not contain ros related functions.
JoystickOnlyView Class only contain Android JoyStick UI.

publish topic list
1. Topic name is "/ cmd_vel". Datatype is geometry_msgs.Twist.
2. Topic name is "~ recognizer / output". Datatype is std_msgs.String.
subscribe topic list
1. Topic name is "odom". Datatype is nav_msgs.Odometry.
2. Topic name is "/ camera1 / image_raw / compressed". Datatype is sensor_msgs.CompressedImage.