I saw a video on youtube (http://www.youtube.com/watch?v=QwyfGqe3AsI&feature=relmfu) about an automatic chicken coop door and really liked the design. The only problem is that one can't get any help with how the electronics were designed. I have modified the design by using an HDPE cutting board that slides on ball bearing door slides like you would get from Home Depot or the like. I have all the mechanical parts ready to be installed and would like some help with the electonics. I have a basic understanding of 12v relays and would like someone to check my work and make sure that my understanding and thinking is correct. I am going to add 2 switches that are not on the drawing. One is to turn the whole system off by placing it just after the fuse and the other is a 3 position switch that will enable me to open the door, close the door, or have it in automatic mode. My other question is do I need diodes installed with this application and if so, do they have relays that have them built in? Thanks in advance, Todd
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