Ok I have a question on here about ideas for auto door openers. I have seen a lot of ideas and am pretty confident I could put something together for a door that slides from side to side or up and down. The problem is that my current coop is a Chicken Ark with the ramp being the door. I would love to try to hook this up to an auto door opener but I just don't see a good place to place limit switches or anything like that. I have a bit of space on the inside or even externally that I could mount some small set-up I just need feasible ideas for the set-up. Any ideas? You can kind of see the ramp in this picture. Right now I have an eye bolt at the end of the ramp that runs up to a pulley and then out through the end of the coop so I can open and lower the door.