SSUsequential-shulker-unloadersSSU002Updated May 28, 2026Archived May 28, 2026
✅Functional
Authors:Christone
Endorsed by:Christone
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A Sequential Shulker UnloaderDefinition: A sequential shulker unloader is a device which filters out one type of items from a mixed box, then it breaks the box when it runs out of that item type and sends it to the next slice (if tiled). ... optimized to be small and cheap by using more redstone dust than observers. It is inspired by previous designs by HeilzMaker and SamosTheSage.
Features
Optimized to be small and cheap
Each sliceDefinition: A repeatable ( Preferably tileable ) component within a system. filters items at max 1xDefinition: Refers to the speed at which items are processed in a hopper (1 item every 8gt, or 2.5 items per second). Usually written as an integer (e.g. '3x hopper speed'). ## Common hopperspeeds 1x: 9000 ite... hopper speed
The box loaderDefinition: A contraption that fills a shulkerbox with items and then breaks the shulkerbox. is fully reliable
Includes an end slice with unloaderDefinition: A contraption that removes item contents from a shulkerbox., mixed loaderDefinition: A Loader that can handle multiple itemtypes going to the same box. Fullness detection is usually done by reading that items are backing up in the container ( hopper / dropper ) feeding the box., and empty box recycling
Considerations
Dust may be less lag-friendly than observers, but none of the dust is constantly clocked here, it only activates per box, so there wasn't a noticeable difference in my testing.
Instructions
Expand or trim the tiled version to desired number of slices
Set the item filters at ssDefinition: Abbreviation for redstone dust/comparator Signal Strength15 with 4 unstackable blockers like: [63 B B B B] or [15 B B B B]
Make sure you have enough storage space for output boxes (full, mixed, and empty)
Christone