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Steps to teleoperate DHEX with a PS4's joystick
Connect a PS4's joystick. Turn on the Ubuntu Bluetooth communication and press and hold the ps with the share button for around 2 seconds. Wait until the joystick pair with the Ubuntu.
Set the joystick configuration. If you have done this step in the tutorials, you can skip this step, otherwise do the configuration in this link: http://wiki.ros.org/joy/Tutorials/ConfiguringALinuxJoystick . It takes less than 2 min.
After the communication between the joystick and ROS, you are able to teleoperate the DHEX. On the terminal:
$ roslaunch joystick_control tele_operation.launch