Tutorials/Combination locks

Combination locks are a type of redstone circuit. They generally have a number of components which must be set in the right combination in order to activate something such as a door. Combination locks can be very useful in creating adventure maps. Note that if you are playing in survival multiplayer, other players will still be able to break into the mechanism and cause it to activate without knowing the password.

Lever lock
A lever lock is one of the easiest redstone locks to create. Each lever doubles the number of combinations the lock has. The possibilities can be found using 2 ^ n, where n is the number of levers used.

When constructing, you will probably first want to place the levers and put them into the desired positions. Next, you should place the redstone torches and repeaters. Torches go be behind levers that are down and repeaters go behind levers that are up. When you are done, all of the torches and repeaters should be turned off. If not, double check any components that are turned on.

de::technik:Kombinationsschloss