Idea for remote bahtinov came from here:
https://www.youtube.com/watch?v=KrSrh4rIldk
This is no-nonsense circuit (with limit switches) for motor control.
Either H-bridge (controlled by single control line) or dpdt switch can be used.
Motor can come from some toy or I can use something
like this or
this depending on output speed (perhaps reduction should use worm gear instead).