Yeah, they always seem to give trouble when you least need it! The auto door on my coop is a Pullet-shut. The "programming" is simple and simplistic:We've recently spent more time chasing chickens than I like ...
You connect it to the battery then open it with the magnet at the time you want it to open every morning then the same day close it at the time you want it to close. If you want to change it, you disconnect the battery for a few seconds and start over from scratch. You can "force" it to open or close using the magnet, this does not cancel the programming.
Well, one day a few weeks ago I had the doors on both ends of the barn open and the wind was really strong blowing a connector from the door off the battery (*). I reconnected it and closed the door after I put the girls away then the next day set the opening time. Given the current (soon to change!) housing situation, I've been leaving the farm house at 6 PM so I set it to close then. But it is now light much later and the girls are NOT ready to go in at 6 PM. Thus I have to lock the girls in the coop before I go. I would close the chicken door and throw scratch in the coop through the people door, most of the girls would go in after it, most of the others enticed with another toss of scratch. All except Fae (Cubalaya). She figured she could get some hand feeding and wouldn't go in. I would open the door to try to get her in and OF COURSE 3 more would run out thinking they were missing something. And the cycle repeats and repeats with various birds going in or coming out. What should take a minute takes 15! Day after day after day. Her 'sister' Peep is the one that lets me know "NOW is the time to give us BOSS" (morning) or scratch (evening) if I'm not fast enough for her. Squark, squark, squark! Moochers, cuuutttteeee, but MOOCHERS!
I finally ordered the light sensor (it was cheap, I should have just gotten it when I got the door) and hooked it up yesterday. Since I stayed here last night I waited until they went to roost to make sure the door didn't close first. They were all up on the roosts about 7:30 and the door was still open because it gets dark in the coop inside the barn some 10' from a window before it is dark outside. I PRESUME it closed when it got dark outside, should have checked. I got up about 5:15 because I am kind of like a chicken, wake with the light. I went down at 5:30 and the door was open but it was still dark in the coop and the girls were all on the roosts (except Clemence who was in a nest and I think is going broody AGAIN! Stupid Faverolles). So now I can go back to just shutting them in the barn when I want to, knowing that the girls will be in the coop when the door closes. Plus, it won't need "programming" as the amount of light changes through the seasons.
(*) The NORMAL battery one would use comes from the Pullet-shut people and the push on connectors would NOT have come off in the wind. But there was no power at the barn last summer due to the house re-construction so I couldn't use the AC charger version and I wasn't SURE I had enough sunlight every day (most likely do) to use the solar charger version so I connected two 6V lantern batteries in series to get 12V and just pushed the connectors on to the spiral wire on top of the batteries. Kinda loosey goosey but it works, well until 2 weeks ago. I modified my setup by making 2 little jumpers that had the proper male connector to match the female on the wire that goes to the door on one end and an alligator clip on the other so the connections are tight now. I could have gotten either of the "official" batteries and chargers when I ordered the light sensor but that would be an additional $45-$50 plus $10 more for shipping and I had just gotten the NEW 6Vs so I figure I don't need to spend the money at this time. This door doesn't use much juice. The first pair of batteries (not even new, took them out of a 4 battery fluorescent lantern) lasted from May to November, the second set (from the same 4) until mid April.
Bruce