​"PaperPiano" is a pentatonic scale piano made out of paper and powered with an Arduino and some code! It's a part of a series of STEM education activities, whose goal is to teach different science and engineering concepts using building, crafts, and art as an entry point. This was made at Princeton University under The Council on Science and Technology. Contributors include Aatish Bhatia, Bernat  Guillen Pegueroles, and Sharon Lee De La Cruz.