Proximity sensors at high speeds

Thread Starter


Joined May 11, 2016
Hey all,

I want to build a toy of sorts that you could provide rapid movements esp in the Z axis, at a fairly high rate that would effect noises.

I was thinking about an ultrasonic proximity sensor but they are pretty pricey. Would an optical sensor do the same thing? Can it be programmed to respond to a hand movement towards it as fast as a hand can move?