I have a spiral staircase. I would like to have strips of LEDs under each stair, so when someone walks up the stairs, it lights up the underneith of each stair as they step on it. What sensor would do this the simplest? There is 15 stairs, can the arduino take 15 inputs?

Light up stairs as you walk, need sensor advice

system June 29, 2014, 8:57pm 12

Hey All,
I'm back to starting up this project.
Paul__B is there a laser you would recommend instead of these 5mw ones?

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