Hello, and thanks for viewing my first instructable! I will show you how to make a passcode door in minecraft or minecraft PE.
Step 1: Materials
You will need to gather some materials. If you're having trouble reading the signs, they say: 15 frame blocks, 6 blocks to place the levers on, 6 levers, 3 signs, redstone (the amount depends), redstone repeater (optional), and redstone torch (also depends), 1 iron door, and 7 of any block (dirt or stone is probably best).
Step 2: Make a Door Frame
For this step, all you have to do is make the frame for the door. Use the picture as a guide if you are confused.
Step 3: Make an Extension
Go out four blocks on the side and then place a block above and below the fourth one. It should look like the picture. (You may have a different frame block)
Step 4: Place the Levers
This step is as simple as placing the blocks you chose to place the levers on, and then placing the levers on them. I used wood, which I think looks pretty good to place the levers on.
Step 5: Label the Levers
In this step, place your 3 signs to label the levers.
Step 6: Back Extension
For this step, go to the back and place 6 of your 7 any blocks just like this. you should still be able to see the blocks the levers are placed on.
Step 7: Choose Your Passcode
This step is a little tricky. Place redstone torches ONLY on the back of the blocks you want to be the passcode. Example: I have redstone torches on the back of 3 and 6 in the picture, which means to open the door, I need to pull down the levers labeled 3 and 6. You'll see this in the picture for the last step.
Step 8: Place Redstone
This step is also a little tricky. Place redstone on every block on top of and below the 6 any blocks. You can't place redstone where there are redstone torches, but every other block must have redstone. If you're still confused, imagine this. You placed 6 blocks on the back. You should have placed the redstone torches on the back of the blocks that are connected to the levers you want to be the passcode. Now imagine you can only place redstone above and below the 6 any blocks. Place redstone on every block you can. This means try placing 6 on top of the any blocks. You might be able to have 6 if your redstone torches are on the bottom. Do the same thing to the bottom.
Step 9: Connection of Redstone.
In this step, connect all the redstone you placed in the last step. The picture should be of help.
Step 10: Dig a Hole
In this step, dig a hole leading to 2 blocks below where your door will be. Use the picture for reference. If you dig a longer hole, you may need a redstone repeater.
Step 11: The Last Redstone Torch
This step is also a little tricky. Place a block with a redstone torch on it. The redstone torch should be directly below where your door will be.
Step 12: Trail of Redstone
In this step, make a trail of redstone leading to the block with the redstone torch on it. You may need a repeater.
Step 13: Place the Door
In this step, all you have to do is place a frame block above the redstone torch and place the iron door on it.
Step 14: Final Testing
To finish, test your door by putting in the code. If it doesn't work, make sure the redstone torches are in the right place.