Teleoperation of Annin Robotics AR4 using Xbox Controller

Using an xbox controller to teleoperate a Annin Robotics AR4 robot arm. Motion planning is handled by the moveit_servo package which generates continuous real-time velocity trajectories.

Code: https://github.com/ycheng517/ar4_ros_driver_examples AR4 ROS driver: https://github.com/ycheng517/ar4_ros_driver