Minecraft – How many possible outcomes will there be to the Minecraft lock

If you watch at about 2:50, you can see most of the left half of the circuit. The part for the stairs looks like it isn't shown very well but that is less important timing wise. Watch carefully over and over and see if you can replicate it this way. It looks like the repeaters for the middle activate and deactivate immediately. So the order (from a circuit standpoint) for both directions is M, L+R. This works for closing because the middle repeaters don't have anything to activate until the blocks are pushed into the middle. When opening, they will retract the middle immediately.

Breaking it down:

Opening

1. Middle repeaters deactivate (middle pistons retract)
2. Delay
3. Left and Right redstones deactivate (left and right pistons retract)

Closing

1. Middle repeaters activate (nothing happens because the middle pistons are not in position)
2. Delay
3. Left and Right redstones activate (left and right pistons extend)
4. Now the middle pistons have been pushed into position and are activated by the middle repeaters

1. A redstone torch will burn out if it pulses (on then off) 8 times in 100 game ticks (5 seconds)

2. The torch will come on again if it receives an update from either a block or a random game tick (which occur approximately every 30 seconds). However, you must wait until there have been less than 7 pulses in the last 100 game ticks before it can be turned on again.

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