In this tutorial, I show you how to build the One Choice / "Pick a Door" Machine. (Click the "Play" button on the video above to start the tutorial)

This mechanism allows you to send separate Redstone signals through the use of unique inputs.

So, if you put a piece of paper named "Door 1" into it, Door #1 will open. If you put a piece of paper named "Door 4," then Door #4 opens. 

Optionally, you can set up the machine to "lock" after you make a choice. That way, players only get a single choice before the machine will no longer accept new inputs. 

You can also use it for more than just doors. You can use it to reward a player at the end of a Dungeon, by allowing them to select a prize - and only one prize.

I'm sure you guys can come up with some applications for this mechanism which I can't think of.

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