My roommate showed me a cool feature on his camera. You hold a button and it projects a few lazer squiggle patterns in the shape of a square.
It is auto-focus for the camera. Are there units like this (the laser + box pattern) for sale anywhere? I would put one on the robot and use it for distance sensor. Would this pattern be detectable by digital camera in the LIGHT? You cannot see the pattern when it is light, but are digital cameras able to detect it? I know they can see IR