I'm trying to create a small scale, dumb-downed version of the pitch tracking systems used to detect the speed and direction of baseballs.
I'm currently working with an HC-SRO4 sensor and an Arduino, but I'm unsure how to expand because a single sensor can't track an object that's not moving linearly (ie rising or falling as it moves). My team's idea was to make a grid of multiple HC-SRO4's connected to one Arduino, but we're worried that the delay will be too large if we try to turn them on sequentially to avoid interference.
How can we use ultrasound to track a moving ball?