the pump on a timer is a nice bit of lateral thinkingI like that design, I might have a hunt about here and see what I can scratch up on the cheap. I was laying in bed this morning designing our rooster box, and how to open the door in the morning. I found a video last night of an aussie design that used water transfer as a counter weight, with the pump on a timer. Not the most attractive looking thing but certainly did the job.
I love using existing tech in a new way.
Now....to go back to those other links and hurt my brain some!
i ordered some aluminium stock today to make the linear actuator turner. i am going to make the sucker work.