Believe it or not, cameras are exactly how the existing system works. I can do it now with OpenCV, but I've thought about looking into doing the same thing with

Believe it or not, cameras are exactly how the existing system works. I can do it now with OpenCV, but I've thought about looking into doing the same thing with mmwave radar instead. I think the radar route is more data-rich, but obviously more complicated and expensive. In the meantime, openCV + a webcam pointed at the pins, then we do some really basic object detection to detect pinfall.