rotate

I an trying to build a big rotating door. So far I have it on a turret axis block, I know that is not the way to do it because I have to get in the core and rotate it manually. My question is how do you make that rotate 90 degrees with a button push, and then rotate -90 back to its original...

The issue is mostly explained in the title but just to be thorough, I made some turrets and attached them to my ship, and got into the ship core to ensure that they worked. All was fine, as they rotated left and right, as well as up and down, all ship core orientations are correct, both the base...