reading IR photoresistor

[skimask]

dhouston, you said that I should send a ultrasound pulse to find distance. But how would I track the position of a specific object (one with a IR emitter, for example) without using anything too complex or expensive like a camera? Thanks for any advice.

-Mike

How about triangulating the angle between 2 narrow angle IR sensors mounted on seperate servo driven platforms X amount of distance apart? That would give you relative position and distance. Put in on a motor driven platform and you can follow anything...
Sounds like fun doesn't it?