im thinking of making a robot that could follow one's feet, by using infrared.
the idea would be to use two or more infrared LED's and attach them to my Shoes and then two infrared sensors on the robot. it would roll a bit, then read witch sensor riceves more IR light, turn that way, roll, and repeat.
any chance it would work? Or am i just talking crazy talk?
I think it would work. Your problem is noise. There is lots of IR in the ambient light. That’s why TV remotes and stuff are “modulated.” So the receiver knows if it’s an actual transmitter or just noise.
You can certainly “home in” on the strongest IR signal based on some function of how frequently a pulse is "seen."
Definitely try it with something a bit less mobile than feet, though.