Newby needing gate opener project help

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http://forum.allaboutcircuits.com – First off I'm new here and was really excited when I found this site. If you guys can help me on my project it will be appreciated and in time I hope I can offer some help to return the favor. Thank You in advance for any and all help on this project. A little about me, I used to be a PlC programmer about 12 years ago but because of a car accident I can no longer pursue what was once my passion in life. I haven't touched a PLC or a control center in 12 years and my memory of it is a bit blurry to say the least. My memory of circuits and relays is a bit fuzzy but I think it will come back (Embedded)