Hello! In this instructable I will show you how to build a kind of hidden passcode locked piston trapdoor!
This contraption works in all editions of minecraft
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Step 1: Materials
You will need...
Some blocks of your choice
And a dispenser
Step 2: Planning
Dig out a 7x4x2 area the red block is to mark where you will be falling down.
I would suggest putting water at the bottom so that you don't die.
Step 3: Starting Out
Place any block of your choice in the right hand side of the hole in the shape shown in the picture
Place a single block in the back of your hole one block away from the shape you just made
Make a backwards L shape as shown in the picture
Place a Redstone torch on the single block that you placed earlier on
And another torch here
Put 3 Redstone dust as shown
Then add a repeater going out of the Redstone dust
Then 3 more Redstone going towards the block that the torch is on
Add a sticky piston make sure it's sticky it should extend
Now it gets a little bit tricky put a comparator on the backwards L shape going into the part that sticks up
Add a dispenser on the left of the hole that you made as shown above
Put a hopper make sure it goes into the dispenser
Put a hopper on top of the other one
Name 4 blocks of wool with an anvil but name it with random numbers and letters as shown name every piece of wool differently
Step 17: The Password
Name 64 of the same item to use as your key make sure no-one else knows the password after that put 18 of your keys in the bottom hopper
Put your 4 wool in the same hopper as your keys
Put hoppers going down into your base leading to a chest
Step 20: Patching Everything Up
Put some dirt next to the piston
Then patch the rest up as shown above
Step 22: Finished!
Now you can test out your new trapdoor put 1 of your key into the hopper then fall down into your base. Good luck and have fun!