For my gcse project think of a basket ball counter that counts the amount of time the ball passes through the hoop. I think ill use a IR beam and when the IR beam is broken it will send an electrial impulse to the counter. On a LED display the number 1 will light up the if the ball passes through again number 2 and so on. Should be pritty simply i think but sorting out where the ir beam will go and where the wires will go however theres my project.