I haven't had much to experiment with in the way of this red stuff (Haven't found much), but here's an idea I had:
Basically, have a circuit that takes a total of ten seconds to make a complete cycle, but increments once per second (like an actual clock), every time it makes a complete cycle, it increments a circuit to the left by one, up to a total of six times, basically making a minute counter. I'm not sure if we have the materials/parts to do this yet, though.
your vault access thing gives me an idea, using levers as 0 or 1, you could effectively make a combination lock to unlock areas, i.e. if you had 4 levers to alter to get the door to open you would have 4^2 = 16 combinations possible,