Piano Stairs/Floor Answered
Just saw the infamous "piano stairs" video by Mitsubishi (see below), and I couldn't help but think there would be a relatively easy way to do this yourself without a ridiculous budget.
Any ideas on how this could be done? I thought some sort of infrared sensor would be cheaper than a pressure sensor like in the video, and could be connected to a computer or device with speakers, or maybe a speaker for every stair with a simple circuit. Then again, I haven't a clue about anything DIY.