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Logic circuit

NOT gate

Invert one decision.

6 × 1 footprint1 layer6 blocksTested in 4 rotationsJava Edition 26.2
Open in the simulatorBuild it in the game

Layout

Layer 0 (on the floor)
lever [face=floor, facing=north, powered=false] at x 0, z 0redstone dust at x 1, z 0stone at x 2, z 0redstone torch (on a wall) [facing=east] at x 3, z 0redstone dust at x 4, z 0redstone lamp at x 5, z 0
redstone dustredstone torchinputlampsolid blockarrows point where a device sends its output; north is up

How it works

A torch on a powered block goes out: the output is the opposite of the input, one redstone tick (2 game ticks) later.

  1. The torch responds to its supporting block: a powered support turns the torch off.
  2. Only one input is needed. After settling, the output always disagrees with it.

Truth table

Settled outputs after the inputs stop changing. 1 is on, 0 is off. Every row is checked in the simulator in all four rotations.

leverlit while the lever is off
01
10

Inputs and outputs

  • Inputlever (x 0, y 0, z 0)
  • Outputlit while the lever is off (x 5, y 0, z 0)

Blocks you need

2 × redstone dust, 1 × lever, 1 × stone, 1 × redstone torch (on a wall), 1 × redstone lamp.

Build it in the game: 6 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 ~0 ~0 ~0 minecraft:lever[face=floor,facing=north,powered=false]
setblock ~1 ~0 ~0 minecraft:redstone_wire
setblock ~2 ~0 ~0 minecraft:stone
setblock ~3 ~0 ~0 minecraft:redstone_wall_torch[facing=east]
setblock ~4 ~0 ~0 minecraft:redstone_wire
setblock ~5 ~0 ~0 minecraft:redstone_lamp