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Registry record · minecraft:observer

Observer

Blocks Redstone

An observer is a compact redstone sensor block that emits a single-tick redstone pulse whenever the block before it changes.

See the exact in-game appearance on Minecraft Wiki

Versioned source data

Edition availability

01

Java Edition

Source version 26.1
Registry ID
727
Source display name
Observer
Maximum stack
64

Bedrock Edition

Source version 1.26.60
Registry ID
251
Source display name
Observer
Maximum stack
64
Component-based
No
Source version tag
Unclassified by source

From the recipe registry

Crafting recipe

Java · 26.1

Observer1 crafted

Recipe data is supplied for Java Edition only in this source. Bedrock recipes are not inferred.

Field guide

Item details

How to obtain

  • Crafted from six cobblestone, two redstone dust, and one Nether quartz on a crafting table. Source
  • Can be mass-produced easily using automated cobblestone and quartz supplies. Source

Practical uses

  • The foundational block of modern automated farms (sugarcane, bamboo, kelp, pumpkins, and melons). Source
  • Detects crop growth, block state updates, redstone changes, and player interactions instantly. Source

Mechanics

  • Observes block state updates on its face and outputs an instantaneous 1-redstone-tick pulse from its rear face. Source
Redstone Dust Piston Redstone Repeater

Reverse recipe lookup · Java · 26.1

Used In · Crafting recipes

0 outputs

No Java crafting outputs using Observer are recorded in the selected source snapshot. This does not establish that the item has no other uses. Bedrock recipe data is not included.