Piano Stairs @ Phoenix Market City

People generally find walking down the stairs boring but we decided to make it fun by turning it into a Giant Piano Staircase and to make it more fun and engaging.
This whole project is done by Revealing Hour Creations team, piano stairs powered by Tah (tah.io) implemented at Phoenix Market City, Pune, India during Christmas 2014.
Initiative By: Revealing Hour Creations (revealinghour.in)

[@ValentTurkovic]

Really impressive work! What kind of sensors did you use to recognize steps? Laser and photodiode? PIR sensor? Presure sensor? UPDATE: found your blog which explains it really nicely, thanks - blog.revealinghour.in/rhc/2015/01/31/piano-stairs/

[@mattigamer0249]

Hi, could you make a how to make video?