Here is a robot that pairs with your smartphone to improve your ping pong skills. The Trainerbot can play with you anytime, offering spin, direction, and trajectory control. The machine can handle a variety of spins and can land the ball anywhere. You can program sequences to work on your weaknesses.
Trainerbot gives you access to thousands of drills. Just place it on your ping pong table, connect it to your phone, and you are ready to go. This smart table tennis trainer is getting funded on Kickstarter.