Try our affiliated browser extension - redirect to BreezeWiki automatically!

Sculk Sensor

The sculk sensor is a sculk block that detects vibrations caused by actions and events and emits a redstone signal and usually triggers nearby sculk shriekers. Players can sneak to avoid making vibrations and wool can be used to occlude and block them. However, they can also used to craft with calibrated sculk sensors.

Obtaining

Chest loot

Item Structure Container Quantity Chance
Java Edition
Sculk Sensor Ancient City Chest 1–3 23.2%
Bedrock Edition
Sculk Sensor Ancient City Chest 1–3 23.2%

Natural generation

Sculk sensors generate within the deep dark biome and ancient cities.

Breaking

Sculk sensors can be mined with any tool enchanted with Silk Touch, but hoes are the quickest. If mined with a non-Silk Touch tool, they drop 5 experience instead.

Block Sculk Sensor
Hardness 1.5
Tool
Breaking time[A]
Default 2.25
Wooden 1.15
Stone 0.6
Iron 0.4
Diamond 0.3
Netherite 0.25
Golden 0.2
  1. Times are for unenchanted tools as wielded by players with no status effects, measured in seconds. For more information, see Breaking § Speed.

Post-generation

A sculk catalyst has a 9% chance of generating a sculk sensor on top of a sculk block.

Usage

This section is missing information about using the sculk sensor as a crafting ingredient. 
Please expand the section to include this information. Further details may exist on the talk page.

Light

A sculk sensor has a light level of 1. When active, it changes to a lighter block state without a change to the light level.

Vibration detection

The sculk sensor vibration particle.

Sculk sensors detect vibrations in an 8 block spherical radius around it. Vibrations are caused by various events, such as a player and mobs walking, placing or breaking blocks, gliding with elytra, items falling on the ground, a piston extending or a wet wolf shaking itself off. While sneaking, a player is not detected when walking, falling, dropping items, or shooting a projectile.

When a vibration is made within the range of a sculk sensor, a signal travels from the vibration source to the sensor at a speed of one block per game tick (20 blocks per second). When the signal arrives, the sensor is activated for 40 game ticks (2 seconds). The sensor cannot detect any other vibrations while activated or while a signal is traveling to it.

Sculk sensors have a cooldown period of 1 game tick (0.05 seconds) after being placed or after deactivating. During this short cooldown period, they cannot detect vibrations. This prevents them from activating when a contraption it is powering is being unpowered.

Sculk sensors don't detect vibrations from other sculk sources or the warden.

Wool and carpets have a special interaction with sculk sensors. If a wool block is placed between a sensor and a vibration source, the sensor is not able to detect the placed wool nor vibrations behind it. Specifically, if the ray joining the cube centers of the sensor block and the vibration source passes through any wool blocks, the noise is muffled. If the ray passes diagonally through the edge between two blocks, either one or the other block may muffle it but not both. Sculk sensors are not able to detect footsteps or dropped items on wool blocks or carpet, and they are also unable to detect dropped items of wool and carpets. When walking or jumping on the edge of a wool block, the player's center has to be over the wool, otherwise the vibration may be detected.[1]

Sculk sensors pass on the vibrations made by players to sculk shriekers within 8 blocks of the sensor. For example, an item dropped by a player triggers the shrieker, but an item dropped by a dispenser or from a broken block does not; a player flying around with elytra triggers the shrieker, but a bat flying around does not. Alarms can be blocked by wool placed in between the sensor and shrieker, similar to how wool can block vibrations from reaching the sensor itself.

Redstone emission

Sculk sensors emit a redstone signal when they are activated. The strength of the redstone signal is inversely proportional to the distance the vibration signal traveled – the closer the vibration is to the sculk sensor, the stronger the redstone signal is, so it reaches the maximum redstone signal strength when the vibration is directly on top of the sensor.

Vibration amplitudes

Jigsaw Block (top texture) JE2 BE2.png
This section needs expansion. 
You can help by expanding it.
Instructions: Bedrock Edition values

Each vibration in the game falls under a certain amplitude value. This value can be measured with a comparator. With the right contraption, the player could detect if a certain action has occurred or is occurring nearby.

Until 1.20
Output Vibration type Game event Description
1 Step minecraft:step An entity walks on the ground or a minecart rolls[note 1]
2 Flap minecraft:flap A flying entity (e.g. a bat) flaps its wings
Item Interact Finish minecraft:item_interact_finish A player reels in a fishing rod, stops blocking with a shield, finishes pulling back a bow or crossbow, throws a trident, or retracts a spyglass[note 1]
3 Swim minecraft:swim Entity swimming[note 1]
4 Elytra Glide minecraft:elytra_glide Glides with elytra
5 Hit Ground minecraft:hit_ground An entity or an item falls[note 1]
Teleport minecraft:teleport An entity (e.g. an enderman) teleports
6 Block Change minecraft:block_change A book is placed on a lectern, a music disc is inserted into or ejected from a jukebox, an item is added to or removed from a flower pot, a campfire is filled with food[note 2], a candle is placed on a cake, a big dripleaf is tilted, a bell is rung, a daylight detector switches mode, a bee enters or exits a beehive, wax is added to or removed from a copper block, a log is stripped of its bark, grass is converted into farmland or a path, a berry bush is harvested, a candle or campfire is lit or extinguished
Minecart Moving minecraft:minecart_moving Does not function currently[2]
Splash minecraft:splash An entity splashes in water, a boat is above a bubble column, or a boat paddles[note 3]
Entity Shake minecraft:entity_shake A wolf shakes off water after getting wet
Note Block Play minecraft:note_block_play A note block emits a sound
7 Drink minecraft:drink A potion is finished drinking.[note 4]
Prime Fuse minecraft:prime_fuse A TNT or a creeper begins exploding
Projectile Shoot minecraft:projectile_shoot A projectile is fired[note 1]
8 Entity Interact minecraft:entity_interact Giving a golden apple to a zombie villager with Weakness, healing a tamed wolf, healing an iron golem, a panda is given a food item, or most instances of successfully feeding an animal.
Projectile Land minecraft:projectile_land A projectile hits something
Eat minecraft:eat A slice of cake is eaten, a horse eats,[4] a panda eats, an animal eats grass, or a player eats food.[note 5]
Entity Damage minecraft:entity_damage An entity is damaged or any entity except an armor stand is killed
9 Equip minecraft:equip An item is put on an armor stand, or armor is equipped (either through the use button, or from the inventory).
Shear minecraft:shear Use shears to disarm a tripwire, carve a pumpkin, harvest honeycomb,[note 2] remove a snow golem's pumpkin,[note 2] remove wool from a sheep[note 2], or convert a mooshroom into a cow[note 2]
Entity Roar minecraft:entity_roar A ravager roars
10 Block Close minecraft:block_close A door, trapdoor, or fence gate closes
Block Deactivate minecraft:block_deactivate A lever is turned off, or a button, tripwire, or pressure plate reverts to its unpressed state
Block Detach minecraft:block_detach A tripwire is detached
Dispense Fail minecraft:dispense_fail A dispenser fails to dispense an item. Does not work with droppers.
11 Block Open minecraft:block_open A door, trapdoor, or fence gate opens
Block Activate minecraft:block_activate A lever is tuned on, or a button, tripwire or pressure plate is activated
Block Attach minecraft:block_attach A tripwire is set
12 Block Place minecraft:block_place A block is placed or powder snow is placed on the ground[note 6]. Flint and steel or a fire charge is used to place fire on top of a flammable block
Entity Place minecraft:entity_place An entity is spawned with an item, for example, a painting or a spawn egg[note 2]
Fluid Place minecraft:fluid_place Increasing the fluid level in a cauldron, including through weather and stalactites;[note 2] placing a fluid using a bucket, not including powder snow[5][note 2][note 7][note 8]
13 Block Destroy minecraft:block_destroy A block is destroyed[note 2], an enderman picks up a block[note 9], one of several turtle eggs on a block cracks
Entity Die minecraft:entity_die An armor stand is killed[7]
Fluid Pickup minecraft:fluid_pickup Honey is harvested with a bottle, a fluid is picked up in a bucket,[note 2] powder snow is picked up in a bucket,[note 2] a glass bottle is filled with water or dragon's breath,[note 2] or a fluid is removed from a cauldron[note 2]
14 Container Close minecraft:container_close A chest, trapped chest, ender chest, barrel, shulker box, or shulker closes[note 10]
Piston Contract minecraft:piston_contract A piston contracts
15 Container Open minecraft:container_open A chest, trapped chest, ender chest, barrel, shulker box, shulker, a minecart with a chest or hopper opens
Piston Extend minecraft:piston_extend A piston extends
Instrument Play minecraft:instrument_play A goat horn is played
Explode minecraft:explode TNT, a creeper, or a firework rocket explodes
Lightning Strike minecraft:lightning_strike Lightning strikes
  1. a b c d e Is ignored when sneaking.
  2. a b c d e f g h i j k l m Also works with dispensers.
  3. Despite being an occurrence of splashing, sculk sensors do not detect fishing bobbers hooking a fish; this has been confirmed by Mojang to be intentional.[3]
  4. Milk does not trigger any vibration, and honey and stews trigger the eating event. See MC-213937.
  5. Honey bottles and stews count as food for this case.
  6. This includes blocks placed by a dispenser or enderman.
  7. Using fish buckets to breed axolotls does not cause this vibration. This inconsistency is intentional.[6]
  8. Replacing an existing fluid, in and out of a cauldron, does not trigger the event. See MC-213965.
  9. This does not include blocks broken by flowing water (MC-207410), nor redstone dust, redstone repeaters, redstone comparators or any type of rail being broken due to its supporting block being removed (MC-207411), nor the last slice of cake being eaten (MC-213968).
  10. Closing a minecart with a chest or with a hopper does not trigger this event. See MC-210707.
1.20
Output Vibration type Game event Description
1 Step minecraft:step
Swim minecraft:swim
Flap minecraft:flap
Resonate 1 minecraft:resonate_1
2 Projectile Land minecraft:projectile_land
Hit Ground minecraft:hit_ground
Splash minecraft:splash
Resonate 2 minecraft:resonate_2
3 Item Interact Finish minecraft:item_interact_finish
Projectile Shoot minecraft:projectile_shoot
Instrument Play minecraft:instrument_play
Resonate 3 minecraft:resonate_3
4 Entity Roar minecraft:entity_roar
Entity Shake minecraft:entity_shake
Elytra Glide minecraft:elytra_glide
Resonate 4 minecraft:resonate_4
5 Entity Dismount minecraft:entity_dismount
Equip minecraft:equip
Resonate 5 minecraft:resonate_5
6 Entity Mount minecraft:entity_mount
Entity Interact minecraft:entity_interact
Shear minecraft:shear
Resonate 6 minecraft:resonate_6
7 Entity Damage minecraft:entity_damage
Resonate 7 minecraft:resonate_7
8 Drink minecraft:drink
Eat minecraft:eat
Resonate 8 minecraft:resonate_8
9 Container Close minecraft:container_close
Block Close minecraft:block_close
Block Deactivate minecraft:block_deactivate
Block Detach minecraft:block_detach
Resonate 9 minecraft:resonate_9
10 Container Open minecraft:container_open
Block Open minecraft:block_open
Block Activate minecraft:block_activate
Block Attach minecraft:block_attach
Prime Fuse minecraft:prime_fuse
Note Block Play minecraft:note_block_play
Resonate 10 minecraft:resonate_10
11 Block Change minecraft:block_change
Resonate 11 minecraft:resonate_11
12 Block Destroy minecraft:block_destroy
Fluid Pickup minecraft:fluid_pickup
Resonate 12 minecraft:resonate_12
13 Block Place minecraft:block_place
Fluid Place minecraft:fluid_place
Resonate 13 minecraft:resonate_13
14 Entity Place minecraft:entity_place
Lightning Strike minecraft:lightning_strike
Teleport minecraft:teleport
Resonate 14 minecraft:resonate_14
15 Entity Die minecraft:entity_die
Explode minecraft:explode
Resonate 15 minecraft:resonate_15

Piston interactivity

Sculk sensors are immovable. Pistons cannot push them, and sticky pistons cannot push or pull them. Slime blocks and honey blocks do not stick to sculk sensors and have no effect whether the slime block or honey block is being pushed or pulled.

Sounds

A sculk sensor is silent if waterlogged. It can still detect vibration, but does not produce sounds itself.

Generic

Java Edition:

SoundSubtitlesSourceDescriptionResource locationTranslation keyVolumePitchAttenuation
distance
Block brokenBlocksOnce the block has brokenblock.sculk_sensor.breaksubtitles.block.generic.break0.90.9616
Block placedBlocksWhen the block is placedblock.sculk_sensor.placesubtitles.block.generic.place0.80.9616
Block breakingBlocksWhile the block is in the process of being brokenblock.sculk_sensor.hitsubtitles.block.generic.hit0.250.516
None[sound 1]Entity-DependentFalling on the block with fall damageblock.sculk_sensor.fallNone[sound 1]0.50.7516
FootstepsEntity-DependentWalking on the blockblock.sculk_sensor.stepsubtitles.block.generic.footsteps0.151.016
  1. a b MC-177082

Bedrock Edition:

Unique

Java Edition:

SoundSubtitlesSourceDescriptionResource locationTranslation keyVolumePitchAttenuation
distance
Sculk Sensor starts clickingBlocksWhen a sculk sensor detects a vibrationblock.sculk_sensor.clickingsubtitles.block.sculk_sensor.clicking0.730.8-1.016
Sculk Sensor stops clickingBlocksWhen a sculk sensor deactivatesblock.sculk_sensor.clicking_stopsubtitles.block.sculk_sensor.clicking_stop0.620.8-1.016
Amethyst resonatesBlocksWhen an amethyst block re-emits a vibration ‌[upcoming: JE 1.20]block.amethyst_block.resonatesubtitles.block.amethyst_block.resonate1.0varies[sound 1]48
  1. Picks number from 0, 0, 2, 4, 6, 7, 9, 10, 12, 14, 15, 18, 19, 21, 22, or 24, and applies using the vibration's signal strength. It uses the same equation that note blocks do.

Bedrock Edition:

  1. Uses the same system as Java Edition.[verify]

Data values

ID

Java Edition:

NameIdentifierFormTranslation key
Sculk Sensorsculk_sensorBlock & Itemblock.minecraft.sculk_sensor

Bedrock Edition:

NameIdentifierNumeric ID FormItem ID[i 1]Translation key
Sculk Sensorsculk_sensor562Block & Giveable Item[i 2]Identical[i 3]tile.sculk_sensor.name
  1. ID of block's direct item form, which is used in savegame files and addons.
  2. Available with /give command.
  3. The block's direct item form has the same id with the block.

Block states

Java Edition:

Name Default value Allowed values Description
power00
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
The sculk sensor's current power level.
sculk_sensor_phasecooldownactive
cooldown
inactive
Whether or not the sculk sensor is active.
waterloggedfalsefalse
true
Whether or not there's water in the same place as this sculk sensor.

Bedrock Edition:

NameMetadata Bits Default value Allowed valuesValues for
Metadata Bits
Description
powered_bitNot Supportedfalsefalse
true
UnsupportedWhether or not the sculk sensor is emitting power.

Achievements

Icon Achievement In-game description Actual requirements (if different) Gamerscore earned Trophy type (PS4)
PS4 Other
Sneak 100Sneaking next to a Sculk Sensor without triggering it.Sneak next to a Sculk Sensor or Warden without triggering or aggravating it.10GBronze

Advancements

Icon Advancement In-game description Parent Actual requirements (if different) Resource location
Advancement-plain-raw.pngSneak 100
Sneak near a Sculk Sensor or Warden to prevent it from detecting you AdventureSneak within 8 blocks from a sculk sensor, or 16 blocks from a warden.adventure/avoid_vibration

History

This section is missing information about 21w05a fixes. 
Please expand the section to include this information. Further details may exist on the talk page.
2020Prototypes for the sculk sensor are made, previously simply stepping on sculk would produce noise and alert the warden.
The sculk sensors were originally only going to emit a redstone signal after being triggered four times, visually shown by markings on its top that would light up each time.
October 3, 2020Sculk Sensor (pre-release 1).gifThe sculk sensor is shown off at Minecraft Live 2020.
Sculk Sensor (pre-release item).png Item model was without tendrils since they were an entity, similar situation to the book on the enchanting table.
November 13, 2020Sculk Sensor (pre-release 2).gif The sculk sensor has a new texture and clicking animation in a tweet from Brandon Pearce.
Tendrils are no longer entities and merged to block model.
November 23, 2020Sculk Sensor (pre-release 3).gif The sculk sensor has a new clicking animation in a tweet from Brandon Pearce.
November 27, 2020Inactive Sculk Sensor JE1.png The sculk sensor has a new final texture in a tweet from Brandon Pearce.
Java Edition
1.1720w49aSculk Sensor JE1.gif Inactive Sculk Sensor JE1.gif Active Sculk Sensor JE1.gif Added sculk sensor with a new inactive and clicking animation.
20w51aEating Start has been removed as an event.
Entity Hit's frequency value has changed from 9 to 8.
Container Close's frequency value has changed from 10 to 14.
Container Open's frequency value has changed from 11 to 15.
Walking on wool no longer causes vibrations.
Throwing wool as an item onto the ground no longer causes vibrations.
Sculk sensors are now silent while waterlogged.
21w05aAdded the following game events:
Output Vibration Type
6 Minecart Moving, Ring Bell, Block Change
7 Drinking Finish, Prime Fuse
8 Mob Interact
9 Equip, Shear, Ravager Roar
12 Entity Place
13 Entity Killed
14 Shulker Close
15 Shulker Open
21w13aThe two unused textures of the calibrated sculk sensor top and side has removed.
21w19aSculk sensors are now accessible only through commands.
1.18Experimental Snapshot 1Sculk sensors are now available in the creative inventory.
21w37aSculk sensors are once again accessible only through commands.
1.19Deep Dark Experimental Snapshot 1Sculk sensors now generate in the deep dark biome.
Sculk sensors now drop experience when mined without Silk Touch.
Now always activate when stepped on, even when sneaking.
Has been re-added to the creative inventory.
22w15aCarpets, like wool blocks, now dampen the vibrations caused by their placing, breaking or dropping as items.
Carpets now also dampen the vibrations caused by running and jumping over them.
1.19.423w06aSculk sensors are now able to detect more actions included in several existing and new game events, such as:
1.19.4 Pre-release 1The item_interact_finish event now has a vibration frequency of 2 instead of 14.
1.19.4 Pre-release 4Are now activated upon breaking shulker bullets.
Upcoming Java Edition
1.2023w12aSculk sensors can now be used to craft calibrated sculk sensors.
Vibration frequencies of many actions in the game have been tweaked and greatly simplified to prevent unwanted interference, as following:
Action Frequency Value
Movement in any medium (land, water, and air) 1
Landing on any surface (land or water) 2
Item interactions 3
Gliding with an elytra or unique mob actions (ravager roar, wolf shaking, etc) 4
Dismounting a mob or equipping gear 5
Mounting a mob or interacting with a mob 6
Mobs and players getting damaged 7
Consuming items (drinking and eating) 8
Blocks 'deactivating' (door close, chest close, button unpress, etc) 9
Blocks 'activating' (door open, chest open, button press, etc) 10
Blocks changing (cauldron water level rising, adding food to campfire, etc) 11
Blocks being destroyed 12
Blocks being placed 13
Mobs and players teleporting or spawning 14
Mobs and players dying or an explosion 15
23w14aNow can be activated by sniffer digging.
Default redstone output has been modified to be more reliable for distance calculations.
Now strongly powers the block they are placed on.
Bedrock Edition
Caves & Cliffs
(experimental)
beta 1.16.210.56Sculk Sensor BE1.gif Added the sculk sensor. It uses a different texture from the one in Java Edition.
sculk_sensor_redstone_signal particles are also different from the ones in Java Edition.
beta 1.17.0.50Sculk sensors can now detect walking vibrations below y=0.
beta 1.17.10.20Sculk Sensor BE2.gif Texture changed to match Java Edition. But not the animation.
1.18.0beta 1.18.0.20Sculk sensor are now available outside experimental gameplay.
beta 1.18.0.22Sculk sensors have been moved behind the "Vanilla Experiments" experimental gameplay toggle.
Vanilla Experiments
(experimental)
beta 1.18.0.22Sculk sensors are now broken faster with a hoe.
Wild Update
(experimental)
beta 1.18.10.21Sculk sensors have been moved behind the "Wild Update" experimental gameplay toggle.
beta 1.18.30.22Added wool occlusion to sculk sensors.
Sculk sensors no longer make clicking sounds if they are waterlogged.
beta 1.18.30.28Sculk sensors now generate in the "Deep Dark" biome.
1.19.0beta 1.19.0.20Added more game events to match Java Edition.
Now always activate when stepped on, even when sneaking.
Sculk sensors are now available without enabling experimental gameplay again.
beta 1.19.0.24Sculk Sensors now drop experience when mined without Silk Touch.

Issues

Issues relating to "Sculk Sensor" are maintained on the bug tracker. Report issues there.

Trivia

  • "Sculk" is derived from "skulk", meaning "keep out of sight, typically with a sinister or cowardly motive".[8]
  • Originally the sculk sensor used to require 4 vibrations before it would emit a redstone signal which is the markings up the top, they would light up for each vibration received and would slowly go down after time.[9]

Gallery

References

External Links