Looks at the block in front of it and emits a short pulse behind when that block changes.
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How it works, recipe, and numbers — below
/give @s minecraft:observerLooks at the block in front of it and emits a short pulse behind when the block changes. Crafting: Cobblestone ×6, Redstone Dust ×2, Nether Quartz.
Create a flat blueprint in the redstone simulator: signal, delays, saving, and exporting a structure.
The observer's face looks at the adjacent block. Placed, broken, plant grown, state changed — after 2 ticks (0,1 seconds), the observer emits a rear strength signal of 15 on 2 ticks (0,1 seconds).
It doesn't see entities or items — only the block itself and its state. It does, however, see things redstone can't: crop growth, snow, melting snow.
| What | Value |
|---|---|
| Signal strength | 15 |
| Delay | 2 ticks (0.1 s) |
| Impulse | 2 ticks (0.1 s) |
| Item ID | minecraft:observer |
| Stack | 64 |
Block change in front of player: block placed, broken, or state changed.
No — only blocks. For mobs, there are pressure plates and tripwires.
Six cobblestones, two redstone dust, and nether quartz.
The entire redstone Redstone: basicsObserver: crafting and where to find it Reed farmMelon and pumpkin farmBamboo farmFur farmKelp FarmPiston Door 3×3Hidden doorClocks made from redstoneFlying machine
Data from Minecraft 26.3: Delays, signal strengths, vibration frequencies, and dispenser behavior — from game code, recipes — from game files.
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