I am very very new at Arduino programming and programming in general. But I was thinking of trying to build a computerized beer pong game. Something similar to this http://www.thisiswhyimbroke.com/beer-pong-arcade-machine but not as fancy. The first stumbling block while thinking it over was how to signal the Arduino when a ball goes through the cup (going to have bottom cut out and balls roll back).
I was thinking of a switch but that is not guaranteed to to trigger every time. My second guess was a “Ultrasonic Module HC-SR04 Distance Sensor for Arduino”
Any ideas or suggestions for the best sensor to use?