Redstonery
Redstonery › Circuits › Three-stage dropper lift
Transport circuit

Three-stage dropper lift

Coordinate inventory transfers across height.

9 × 5 footprint4 layers24 blocksTested in 4 rotationsJava Edition 26.2
Open in the simulatorBuild it in the game

Layout

Layer 0 (on the floor)
dropper [facing=up] at x 4, z 0lever [face=floor, facing=north, powered=false] at x 0, z 0redstone dust at x 1, z 0redstone dust at x 2, z 0redstone dust at x 3, z 0stone at x 4, z 4stone at x 4, z 1stone at x 4, z 2stone at x 4, z 3
Layer 1 (1 up)
dropper [facing=up] at x 4, z 0lever [face=floor, facing=north, powered=false] at x 4, z 4redstone dust at x 4, z 1redstone dust at x 4, z 2redstone dust at x 4, z 3stone at x 8, z 0stone at x 5, z 0stone at x 6, z 0stone at x 7, z 0
Layer 2 (2 up)
dropper [facing=up] at x 4, z 0lever [face=floor, facing=north, powered=false] at x 8, z 0redstone dust at x 5, z 0redstone dust at x 6, z 0redstone dust at x 7, z 0
Layer 3 (3 up)
barrel at x 4, z 0
redstone dustinputcontainerhopper, dropper or dispensersolid blockarrows point where a device sends its output; north is up

How it works

Three droppers point upward into one another and finally a barrel. Pulse Lower on/off, then Middle on/off, then Upper on/off. Release each control before proceeding: powered droppers also activate neighboring stages, which must rearm. With the initial three stones, one reaches the barrel after the first round and the other two after the second. This exposes sequencing and adjacent activation; a round is not a one-item transaction. No loose items or water are involved.

  1. Three upward-facing droppers transfer into one another and then the top barrel.
  2. Pulse Lower on/off, Middle on/off, then Upper on/off, allowing 20 game ticks between changes. Neighboring stages can also activate, so a round is not necessarily a one-item transaction.

Inputs and outputs

  • InputLower stage (x 0, y 0, z 0)
  • InputMiddle stage (x 4, y 1, z 4)
  • InputUpper stage (x 8, y 2, z 0)
  • Inputrefill lower dropper (x 4, y 0, z 0)
  • Outputupper barrel (x 4, y 3, z 0)

Blocks you need

9 × redstone dust, 8 × stone, 3 × dropper, 3 × lever, 1 × barrel.

Build it in the game: 25 commands

Relative to where you stand, with x running east and z running south. Paste one line at a time into chat, or into a chain of command blocks. The block art is the game's own; the layout is what the page above shows.

setblock ~4 ~0 ~0 minecraft:dropper[facing=up]
setblock ~4 ~1 ~0 minecraft:dropper[facing=up]
setblock ~4 ~2 ~0 minecraft:dropper[facing=up]
setblock ~4 ~3 ~0 minecraft:barrel
setblock ~0 ~0 ~0 minecraft:lever[face=floor,facing=north,powered=false]
setblock ~1 ~0 ~0 minecraft:redstone_wire
setblock ~2 ~0 ~0 minecraft:redstone_wire
setblock ~3 ~0 ~0 minecraft:redstone_wire
setblock ~4 ~0 ~4 minecraft:stone
setblock ~4 ~1 ~4 minecraft:lever[face=floor,facing=north,powered=false]
setblock ~4 ~0 ~1 minecraft:stone
setblock ~4 ~1 ~1 minecraft:redstone_wire
setblock ~4 ~0 ~2 minecraft:stone
setblock ~4 ~1 ~2 minecraft:redstone_wire
setblock ~4 ~0 ~3 minecraft:stone
setblock ~4 ~1 ~3 minecraft:redstone_wire
setblock ~8 ~1 ~0 minecraft:stone
setblock ~8 ~2 ~0 minecraft:lever[face=floor,facing=north,powered=false]
setblock ~5 ~1 ~0 minecraft:stone
setblock ~5 ~2 ~0 minecraft:redstone_wire
setblock ~6 ~1 ~0 minecraft:stone
setblock ~6 ~2 ~0 minecraft:redstone_wire
setblock ~7 ~1 ~0 minecraft:stone
setblock ~7 ~2 ~0 minecraft:redstone_wire
item replace block ~4 ~0 ~0 container.0 with minecraft:stone 3