you sorta answered my question..thanks..maybe best i be clearer. I want to use an Art Controller on the target end of the game for starters. An infrared focused beam needs to hit the (infrared phototransister) ?? connected to the art controller trigger posts? Directly? or will other components need to be added to the train? to trigger the art controller into its cycle? From there..piece of cake i think..the art controller for my purposes will work nicely activating through its times output cycle. It will run through its cycle activating an air cylinder to create an animation with compressed air..then reset its self for THE NEXT shot of IR to activate the cycle again, so you see i really don’t need it to count shots really, just get triggered into its cycle from an IR beam..pardon my ignorance in some of the language and processes for i am just learning, but i hope you get the idea of what im trying to do, AND THANKS so very much for any help you can give me!!