Block
Observer
Detects a block update at its face and emits a short pulse from the opposite side.
Quick answer
Detects a block update at its face and emits a short pulse from the opposite side.
IDminecraft:observer
ObtainingStone, quartz, redstone
Primary roleUpdate detector
RedstoneShort pulse
How to obtain
An observer uses cobblestone, two redstone dust, and Nether quartz. Its face must point at the block being monitored.
How it works
It reacts to recognized updates and emits a pulse from the red dot on its back. The exact event set differs slightly by edition.
Where to use it
The block triggers sugar cane, bamboo, pumpkin, and kelp farms, as well as compact clocks and state detectors.
Practical tips
Plan orientation before placement because reversing one often means rebuilding the circuit. Two observers facing each other form a fast clock.
