Pinhole camera - technique used for navigation?
Playing around with a small project, of a time-lapse-recording that should track a cloud in the sky, I got to think of Pinhole cameras - and I was thinking if any one had tried to play with the technique
- and instead of photographic negative on the backside, have a few light dependent resistors of some form?
A maze solving robot might see the walls ahead that way. And if you where tracking on IR, you might be better off with a line of sensors behind a pinhole, than scanning from side to side?