>In an effort to further the athleticism of my children, so they can >someday be filthy rich and support their kindly old father, I am >building a wooden target for them to throw a ball at. > >I want to count the number of times the ball hits the target. A PIC >will count the number of hits and handle an LED display. But I'm >hoping for suggestions on how to detect the hits. Two things come to >mind: An accelerometer responding to the vibration of a hit, or a >microphone that picks up the sound of a hit. > >Any further ideas or comments? > >Thanks, Rock > Interesting problem. Childrens' toys are among the most difficult devices to make idiot-proof. How do you defend against the trivial case where the child just walks up and whacks the target to increase the score? Probably YOUR kids would never do such a thing :-) Reg Neale