Phidget Interface Kit 0/16/16, optocouplers, infrared diodes????

Hello. I'm making a slot track in wood. The point is that I want to include in the slot track: semaphore, system of refueling in the pits and lap counter. I searched a lot on this forum, but, I do not speak English (I use the Google translator), I not find the answer to my questions.

Basically the question I have is: What do I need to install?

Had considered buying the Phidget Interface Kit 0/16/16, and use optocouplers to count laps, and use infrared diodes for the fuel load. What components should I use and how I install it?

They can guide me in this?

Thanks in advance.

(Sorry for my translation).