Sensor that detects the height of your hand above a given point, ANY IDEAS?
... Or does anyone know a laser device that can detect the position of the hand above it? ...
>.. I want to apply it on my Laser Harp idea, to control the Volume of the speaker.
Mainly the idea is, the position of the hand above the device that produces a laser line will control the volume; if in high position high volume, if in low position low volume, etc.
>. Tnx if you guys can comment, suggest, advice. XD