A method of customizing a golf club, wherein the method includes generating operating data representative of a user operating a mechanical device. The operating data is generated by a first sensor sized and configured to be removably positioned in a mounting port formed on the mechanical device during operation of the mechanical device. The sensor is interchangeably positionable in the mounting port with at least one mass insert, the at least one mass insert being adapted to be interchangeably positioned in the mounting to provide at least two different mass configurations. The method further includes determining a recommended configuration of the at least one mass insert specific to the user based on the operating data generated by the sensor, and transmitting information representative of the recommended mass insert.

Embodiments of the present invention are directed to devices, systems, and methods for implementing drills and providing coaching instructions to users. Embodiments may load a drill, measure values obtained from one or more sensors installed on a player's tennis racket and/or worn on the player's body, and use those values to detect various parameters, such as the physical impact of a ball at the player's racket. Embodiments may then output a coaching instruction to the user. Embodiments may also include adding customized coaching instructions to a drill.

Embodiments of the present invention are directed to devices, systems, and methods for implementing drills and providing coaching instructions to users. Embodiments may load a drill, measure values obtained from one or more sensors installed on a player's tennis racket and/or worn on the player's body, and use those values to detect various parameters, such as the physical impact of a ball at the player's racket. Embodiments may then output a coaching instruction to the user. Embodiments may also include adding customized coaching instructions to a drill.

A teaching tool for use by an instructor teaching proper footwork and effective swing techniques to students of the game of tennis as well as to students of other racket-based sports. The teaching tool provides an elongated member and a mounting member extending perpendicularly from the distal end of the elongated member. A target object is connected to the distal end of the mounting member. The target object and distal end of the elongated member may be separated by a target distance defined, in part, by the size of racket the student is using. In use, the instructor can directly and selectively control the movement of the target object to simulate imparted spin and motion of the target object before and after the student strikes the target object.

A teaching tool for use by an instructor teaching proper footwork and effective swing techniques to students of the game of tennis as well as to students of other racket-based sports. The teaching tool provides an elongated member and a mounting member extending perpendicularly from the distal end of the elongated member. A target object is connected to the distal end of the mounting member. The target object and distal end of the elongated member may be separated by a target distance defined, in part, by the size of racket the student is using. In use, the instructor can directly and selectively control the movement of the target object to simulate imparted spin and motion of the target object before and after the student strikes the target object.

A tennis serve toss aid comprising: 1) a ring member to be placed on a finger of the non-racket holding hand of a tennis player, 2) a bowl member that holds the tennis ball, and 3) a connector member that allows the bowl member to be attached to the ring member in a variety of orientations, The tennis serve toss training aid trains the tennis player to control the tennis ball without use of the fingers to release the ball, supinate the palm, lock the wrist and elbow, and use the tossing arm as a simple lever which moves from a down position to an up position. As the arm moves to an up position the ball is released from the bowl member due to inertia. This allows the tennis player to be able to repeatedly toss the tennis ball to substantially the same position in the air where it can be struck consistently with the tennis racket to deliver the serve.

A tennis serve toss aid comprising: 1) a ring member to be placed on a finger of the non-racket holding hand of a tennis player, 2) a bowl member that holds the tennis ball, and 3) a connector member that allows the bowl member to be attached to the ring member in a variety of orientations, The tennis serve toss training aid trains the tennis player to control the tennis ball without use of the fingers to release the ball, supinate the palm, lock the wrist and elbow, and use the tossing arm as a simple lever which moves from a down position to an up position. As the arm moves to an up position the ball is released from the bowl member due to inertia. This allows the tennis player to be able to repeatedly toss the tennis ball to substantially the same position in the air where it can be struck consistently with the tennis racket to deliver the serve.

A golf Swing training device comprises a club member and at least one weight member. The weight member includes a mating Structure for Securing the weight member to a complementary mating Structure in the Shaft portion of the club member. The weight member can be secured to the shaft in at least three positions including a first position at the top of the Shaft adjacent the handle, a Second position at or near the midpoint of the Shaft and a third position at or near the distal end of the shaft.

An Internet of Thing (IoT) device includes a body with a processor, a camera and a wireless transceiver coupled to the processor.

An Internet of Thing (IoT) device includes a body with a processor, a camera and a wireless transceiver coupled to the processor.