Badminton is a fun sport, but you are going to need a partner or two to play it. The Robomintoner is a badminton robot that can replace your partners. This robot was developed by students from Chengdu. It has two badminton racquets to keep up with you.
The robot has a HD camera and binocular vision system to predict movements. It sends the data to the base via Bluetooth to keep up with the players. This CCTV English video provides more info about the robot.