Try to detect strokes with the accelerometer of the watch. This will require that the player wears the watch on the arm he uses to hold the racket. It will be hard to discern acceleration due to a stroke from acceleration due to movement of the player on the field. The player should be able to calibrate the detector to match his power.
Try to detect strokes with the accelerometer of the watch. This will require that the player wears the watch on the arm he uses to hold the racket. It will be hard to discern acceleration due to a stroke from acceleration due to movement of the player on the field. The player should be able to calibrate the detector to match his power.
This opens the way for very interesting stats.