I am trying to design a Juggling ball that is able to send it's speed/location relative to a central hub to a computer so that the computer can convert that information into where the peak of a throw occurred and then that peak into a specific musical note. Anybody have any idea how I'd go about this? Thanks.
Use a micro controller with a 3 axis accelerometer to determine when the ball peaked. You can get the height from the acceleration as the ball left the hand. Knowing where the balls are is difficult.