Archive Entry

3wt Hopper Speed Cycvar

VIPvariable-item-processingVIP011Updated Jun 20, 2026Archived Jun 20, 2026

✅Functional

Authors:iigo

Endorsed by:TisUnfortunate

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Front view of cycvar

A compact (3x7x12 sliceDefinition: A repeatable ( Preferably tileable ) component within a system.) hopper speedDefinition: 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... cyclical variable sorterDefinition: A cyclical variable sorter (cycvar) is a variable sorting device which takes in mixed boxes and outputs single-type boxes with minimum partial box output (ideal output). A cycvar works similarly to... that splits and merges a batch of mixed boxes while producing minimal partial boxesDefinition: Ideal box output refers to a device which outputs minimal partial boxes after the contents of mixed boxes are sorted into single item-type boxes. What this means is that for each type, every box ex.... Ready to use with a cubic footprint.

Features

• 3x7x12 slice dimensions
• 54 box batch size
• Handles empty boxes, 64 unstackables, 16 unstackables, and unstackable items
• Can pause to stop new cycles from starting
• Will not start a cycle without sufficient empty boxes
• isActive readout
• Empty boxes early exit when entering unset slice
• Empty box check integrated with end slice
• Ideal output (minimal partial boxes)
• Fully hopper unlocked
• Nether compatible
• 29 box buffer between slices

Considerations

• Empty boxes and unstackable items share a output chest
• Only input at most 54 boxes in each batch; use the isActive readout for batching inputs
• Pause may take some time to occur since it will finish current cycle; use isActive to determine when safe to unload
• If using pause, take input batching into account since buffer will still have items in it but isActive will read false
• Only input boxes into the input or equivalent hopper line
• No overflow protection on output chests; ensure that they do not back up into slices to prevent errors and item loss
• Item count in hopper clock is dependent on number of slices

Instructions

1. Use the isActive readout for batching inputs (input at most 54 boxes in each batch).
2. If pausing, use isActive to determine when it is safe to unload (pause finishes the current cycle).
3. Avoid output chest back-ups into slices to prevent errors and item loss.
4. Only input boxes into the input or equivalent hopper line.