SCULK SENSOR

Crafting Recipe

Found in Deep Dark biome (not craftable)

Signal Behavior

The Sculk Sensor in short: what it is and what it does

A wireless redstone component that detects vibrations (footsteps, block placement, etc.) within a 9-block radius and outputs a redstone signal. Different vibrations produce different signal strengths.

As a power source it sits at the start of a circuit, generating the signal that everything downstream reacts to. It is the game's first practical wireless redstone source, reacting to vibrations through walls and around corners.

The Sculk Sensor was added to Minecraft in 1.19; everything below is its Java Edition 26.2 behaviour.

The redstone mechanics of the Sculk Sensor, step by step

On the input side, vibrations (sound events) within 9-block radius. On the output side, signal strength 1-15 depending on vibration type.

It listens for vibration events within a 9-block radius and outputs a signal whose strength depends on which event fired, walking, landing, and block placement each map to a different frequency. After triggering it enters a short cooldown before it can listen again. Wool laid between the source and the sensor absorbs the vibration entirely.

Timing-wise, factor in varies (vibration travel time + 2 game ticks) when you wire it into a sequenced circuit.

It can output a maximum signal strength of 15, which travels 15 blocks through bare redstone dust before fading to nothing.

The Sculk Sensor has 2 settings you need to know about before you place it, and here they are: passive detection and filtered with wool.

How to set up the Sculk Sensor

1. 1Obtain the Sculk Sensor: Found in Deep Dark biome (not craftable).
2. 2Pick the spot before you place anything: the Sculk Sensor needs a solid surface under it and a clear line through to the next part of the circuit it has to feed.
3. 3Run redstone dust away from it toward the component you want to control, remembering the signal will fall by 1 per block.
4. 4Flip the input once and watch the Sculk Sensor on its own before you wire anything else to it, because a wrong facing or a wrong block behind it is far cheaper to fix at this point than later.

Jobs the Sculk Sensor does well

• ▸Wireless redstone
• ▸Sound-based triggers
• ▸Mob detection without line of sight
• ▸Hidden mechanisms

Tips & common mistakes

• !Wool blocks vibrations between source and sensor
• !Different actions produce different signal strengths
• !Cooldown period between detections
• !Because every nearby noise can set it off, surround it with wool to mute stray vibrations and only leave a gap toward the action you actually want to detect.

Components that connect to Sculk Sensor

Sculk Sensor does not stand on its own. 6 other component pages are tied to it:

• Calibrated Sculk Sensor, needs 1 Sculk Sensor in its own recipe
• Light Weighted Pressure Plate, grouped with Sculk Sensor, 13 of them in total
• Daylight Detector, one of the 13 in the same group
• Tripwire Hook, one of the 13 in the same group
• Redstone Torch, sits in the same group of 13 as Sculk Sensor
• Block of Redstone, another of the 13 components in this group