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This is my design for a combination lock, with a size of 24 blocks per digit. It was designed in Java edition 1.20.1 but probably works in earlier versions. I don't know if it works in Bedrock edition.
You can change the code by putting items in the barrels so that the comparator emits a signal between 7 and 15.
Each dropper and the furthest hopper should contain exactly one block.
#craftylockwr
