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Shelf and comparator

How do I propose the interaction of shelves and comparator:
— If the item is in the first slot of the shelf and the other slots are empty, the comparator emits a redstone signal equal to 1
— If the item is in the second slot and the others are empty, it emits a signal equal to 2
— Similarly with the third slot
— If the first and second slots of the shelf are filled with items, but the third slot is empty, then the comparator emits a redstone signal equal to 4
— If the second and third slots are occupied, but the first slot is empty, it emits a signal equal to 5
— If the first and third slots are occupied, but the second slot is empty, comparator emits a signal equal to 6
— If all slots are occupied, it emits a signal equal to 7

Registered User shared this idea

• July 23, 2025 16:02
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  Registered User commented

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  • July 25, 2025 19:31
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  Alternative suggestion: What if the positions of the items in the shelf were used as a binary number? That way, the item to redstone signal translator would look like this:

  • 001 = 1
  • 010 = 2
  • 011 = 3
  • 100 = 4
  • 101 = 5
  • 110 = 6
  • 111 = 7