How to make a combination lock in minecraft 🔓

Place any solid block with an item frame and an item on it.

Turn the item to what you want it to be.

Put a comparator behind the block and put redstone dust until the signal goes out.

Put this at the end of the redstone line.

Add a redstone torch to invert the signal.

The redstone torch it the output. You can hook it up to a door or lamp.

Combine multiple of these together to make a password. Each item frame is one digit that can be 1-8.

You can make this more compact but I built it spaced out so it is easier to see.