Obs Automation.... After reading many postings on this forum I decided to automate my obs, partly because it would be an interesting project and partly because the running rails on my roll off roof needed some attention after many years of service. I decided to go for a garage door opener driven system as this looked to be the easyest system to implement as all the needed kit was in one package. I also decided, while I was about it, to make the roof lighter to provide less work for the motor/