video projector motor zoom and focusing addon?
I know some people use shutter addons to block any stray lights from a video projector when it isn't used.
But sometimes I wish I could also attach some device that would rotate and zoom the lens without me having to get a ladder and do it myself.
And yes I know there are video projectors with motorized zoom and focus, but their price at the same brightness jumps so high I just can't afford those models.
I imagine something like a servo motor, arduino type electronics and a spring/plastic arm assembly could do what I have in mind.
Has anyone tried building something like this and attaching to their video projectors? Or better yet, does someone sell such an addon? I understand that the zoom and focus rotation rings don't have a stadard size but if an addon had a resizable and swappable plastic parts secured with set screws or knobscrews I think it could work.
