Robot 'blind knight' Perfect ball pitcher doesn't fall just by listening to the sound

Robots are doing more and more things that people still think are difficult.

If once a tennis ball has been played, you will know that it is not easy to observe the movement of the ball, to control the force and direction of the hand to keep the ball in the racket as it rises. bounce. But now, a robot has been able to do this perfectly, not even needing a camera to detect the position of the ball, but only sounds.

Tkuhn - a programmer dedicated to the Arduino circuit board , created a system to raise table tennis by identifying the sound of the ball in contact with the plane on the system . At first glance it is the same way that people lift their balls by moving their wrist slightly, but as mentioned above, this system only uses sound.

Each time the ball touches the wooden surface will produce different sounds and this sound will be captured and analyzed by 4 surrounding microphones.

Depending on where the ball touches, 4 microhphone will determine the position of the ball closest to where it is then transfer the data to the motor to adjust the ball bounce system.

You can observe more easily with this horizontal rotation angle: