I'm looking to do this with interrupts. No matter the Elapse time difference, the winner will be declared by who breaks the finish line beam first with a seperate circuit that will feature a "win light" LED that will light up on the finish line sensor of the winning lane to depict the winner. All I need this code to do is output two seperate elapsed times. Ive never written code with the arduino before, would anyone have this type of code or simliar code that would point me in the right direction? Also keep in mind the elapsed times would be outputted to an LCD display screen.