3. The Rotating Item Frame Lock

What This Idea Means

An Item Frame Lock uses a Redstone Comparator to measure the rotation state of an item inside a frame. An item in a frame can be rotated into eight different positions. Each rotation increases the redstone output strength by one level. When rotated to a specific position, the signal reaches exact strength needed to unpower a piston door.

Materials Needed

  • 1 Item Frame
  • 1 Any item (e.g., Sword, Feather, Clock)
  • 1 Redstone Comparator
  • Redstone Dust (varies based on distance, around 8-12)
  • 1 Redstone Repeater
  • 1 Redstone Torch
  • 1 Sticky Piston

Step-by-Step Tutorial: How to Make It

  1. Mount the Frame: Place an item frame on the wall where your secret room will be located, and insert an item.
  2. Setup Comparator: Go behind the wall directly behind the item frame. Place a Redstone Comparator facing away from the block holding the item frame.
  3. Wire Output Line: Run a line of redstone dust extending out from the comparator output. Count out redstone dust equal to your chosen combination (e.g., if you want position 5 to open the door, run 5 redstone dust).
  4. Create Inverter: At the end of your desired dust length, place a solid block with a Redstone Torch attached to its side. This torch maintains power to keep your secret door locked.
  5. Connect Door: Run redstone from the torch to your hidden door’s piston mechanism.
  6. Calibration: Rotate the item in the frame. When the item hits position 5, the signal reaches the block, turns off the torch, and opens the door.

Tips and Variations

  • Multi-Frame Locks: Combine two or three item frames using AND gates for high-security combination vault doors.
  • Aesthetic Camouflage: Place the item frame inside a decorative storage room alongside labeled chests so it looks like standard decor.