Automatic Chicken Door Opener?

[shesell]

Does anyone have plans for an automatic chicken door opener?
We are just now building the chicken coop and would love to have one of these but the cost a good deal to buy.
Sheila

 

[Freebird1st]

I've looked at several plans over the months but have not settled on any one yet.
A quick search for "automatic chicken door" turns up some results such as this.

https://www.backyardchickens.com/forum/viewtopic.php?id=99668

Let us know what you finally come up with.