I'm a student currently working on a project. I have two objects, one of which is a plastic ball. The other is a rectangle which is being hit with said ball. My goal is to detect a position of a hit. The rectangle is about 5x5 cm. What would be the least intrusive way of sensing a position of a hit?
Perhaps I could use some kind of sensors on the rectangle to try and triangulate the position? Maybe put a small magnet on a ball (d=3cm) and with a help of small coils on the rectangle to calculate the position (could that work? or is it just stupid?) Small current would induce on each coil. How about putting a thin metalic film on the ball and an array of small (+) pads and an array of detection pads (grounded via pulldown resistor)? Like a matrix.