Questions on programming/using Photoelectric sensor

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hello all! making automated can crusher , using "atc" photoelectric sensor 10-30v dc sensor using 12v power supply power both sensor , arduino. question have advice make program work properly? want sensor tell when can present , activate program. have program setup without sensor or switch period. curious on best way go using start program? have searched through forum see how go doing , couldn't quite find suit application. figured best forum considering amount of experienced users arduinos. advice or ideas appreciated! :)

hello,
the project sound pretty basic me. need periodically turn light beam on, test if being received @ sensor. if is, there no can , nothing needs done. if light beam not detected, there can start crushing. need step x times in 1 direction , x times in other direction.

when done, use delay , wait second or 2 before testing again can...

once far, consider removing delay , using sleep mode instead.


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