ok . So if I understand you correctly, after 3 months , and reading everything on this post, you do not know what you need ?
(in general, I mean. If you were to order a "black box" that does everything you have asked for so far, which is drive the actuator
in one direction or the other based on a pot position) what would that black box be called (on the internet, or in a google search as far as the rest of the world is concerned) ? The question is based on the assumption that you have read everything posted on this post) . Can you answer that question ? (I'll post the links to the answer after you post your answer.)