Our first idea sketch
We plan to use flex sensors and accelerometer sensor and speaker to play the Air Piano.
https://s3-us-west-2.amazonaws.com/secure.notion-static.com/0300ec96-fb50-4df6-b49b-3ce49239a8d0/IMG_7985.mov
https://s3-us-west-2.amazonaws.com/secure.notion-static.com/fa13b4c8-0716-4787-857b-1e6ccda25d71/IMG_7986.mov
I wanted to use a vibrator for the indicator of the swipe motion feedback but it haven't worked what I expected...
Instead of that, I use full-colored LED to indicate the gesture goes well or not.