Ok, so I have forestry farms and I want to automate them. I feel that redpower can do that. My idea is something like this.
Engines are off for 20 mins so farm can grow, then at twenty minutes the engines run for 5 mins, and after that it reverts back to the 20 min countdown. How can you do this without state cells (Because in the version of Tekkit I'm running it doesn't have those)?