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Power SourcesAdded in 1.20

CALIBRATED SCULK SENSOR

A sculk sensor with an amethyst shard filter. Accepts a redstone signal input to filter which vibration frequencies it detects. Only triggers on the specified frequency.

Calibrated Sculk Sensor sprite

Crafting Recipe

1 Sculk Sensor + 3 Amethyst Shards → 1 Calibrated Sculk Sensor

Signal Behavior

Input

Vibrations matching the calibrated frequency

Output

Signal strength 15 when matching vibration detected

Max Signal Strength

15

Delay

Vibration travel time + 2 game ticks

Modes

  • Filtered by input signal strength (1-15 = frequency)

Making Calibrated Sculk Sensor: the pattern and the full ingredient count

To craft Calibrated Sculk Sensor you place 3 Amethyst Shard and 1 Sculk Sensor in the shape below, which fills a 3x2 corner of the grid. The craft yields exactly one Calibrated Sculk Sensor for those 4 items.

Count on 3 Amethyst Shard per Calibrated Sculk Sensor; that is where 75 percent of the cost sits.

Calibrated Sculk Sensor in a 3x2 grid, square by square

Empty square in the Calibrated Sculk Sensor recipe
amethyst shard in the Calibrated Sculk Sensor recipe, row 1 column 2
Empty square in the Calibrated Sculk Sensor recipe
amethyst shard in the Calibrated Sculk Sensor recipe, row 2 column 1
sculk sensor in the Calibrated Sculk Sensor recipe, row 2 column 2
amethyst shard in the Calibrated Sculk Sensor recipe, row 2 column 3
The ingredient list for one Calibrated Sculk Sensor
Ingredient in Calibrated Sculk SensorNumber of squares
Amethyst Shard iconAmethyst Shard3
Sculk Sensor iconSculk Sensor1
Calibrated Sculk Sensor out of a single craft1

As the Calibrated Sculk Sensor crafting recipe stands in Java Edition 26.2.

What the Calibrated Sculk Sensor is, and what it does for you

A sculk sensor with an amethyst shard filter. Accepts a redstone signal input to filter which vibration frequencies it detects. Only triggers on the specified frequency.

As a power source it sits at the start of a circuit, generating the signal that everything downstream reacts to. It is the filtered upgrade of the sculk sensor, letting you pick exactly one vibration frequency to react to.

Minecraft 1.20 brought the Calibrated Sculk Sensor in. What follows is how it behaves in Java Edition 26.2.

Inside the Calibrated Sculk Sensor: what the signal actually does

What the Calibrated Sculk Sensor reads: vibrations matching the calibrated frequency. What it gives back: signal strength 15 when matching vibration detected.

Feeding a redstone signal of strength 1-15 into its side input tells it which single frequency to listen for, and it then fires signal 15 only on a matching vibration within its 9-block range. Every other vibration is ignored, which makes it far quieter than a plain sculk sensor.

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

The Calibrated Sculk Sensor tops out at 15. Count 15 blocks of bare dust away from it and the signal has fallen to nothing at all.

These are the modes you can put the Calibrated Sculk Sensor into, and each one changes what comes out: filtered by input signal strength (1-15 = frequency).

How to set up the Calibrated Sculk Sensor

  1. 1Craft the Calibrated Sculk Sensor: 1 Sculk Sensor + 3 Amethyst Shards → 1 Calibrated Sculk Sensor.
  2. 2Set the Calibrated Sculk Sensor down facing the way the signal has to travel, on a block that will actually hold it in place, with the dust already run out on the far side.
  3. 3Run redstone dust away from it toward the component you want to control, remembering the signal will fall by 1 per block.
  4. 4Before it goes anywhere near a real build, run the Calibrated Sculk Sensor on its own a few times over and check every result against the timing figures listed above this step.

Where the Calibrated Sculk Sensor earns its keep

  • ▸Frequency-specific detection
  • ▸Advanced wireless systems
  • ▸Event filtering
  • ▸Selective mob detection

Tips & common mistakes

  • !Must set input signal to define which frequency to detect
  • !Only detects one frequency at a time
  • !If you forget to set the input frequency it defaults to listening for nothing useful, always drive the calibration input to the frequency you want.

Calibrated Sculk Sensor FAQ: the questions people ask

  1. Sculk Sensor, named in this component answer

    What do redstoners actually build with the Calibrated Sculk Sensor in Minecraft?

    The Calibrated Sculk Sensor is most often used for frequency-specific detection, advanced wireless systems, event filtering, and selective mob detection. As a power source it sits at the start of a circuit, generating the signal that everything downstream reacts to.

  2. Redstone Dust, the icon for this component question

    How far does the Calibrated Sculk Sensor push a signal?

    Up to 15 out of the Calibrated Sculk Sensor, and not a level more than that. Signal strength 15 when matching vibration detected.

  3. Crafting Table, the icon for this component question

    How do you craft the Calibrated Sculk Sensor?

    1 Sculk Sensor + 3 Amethyst Shards → 1 Calibrated Sculk Sensor. It was introduced in 1.20.

  4. Redstone Repeater, the icon for this component question

    Does the Calibrated Sculk Sensor add any delay to a circuit?

    Yes, vibration travel time + 2 game ticks. Account for that timing when chaining it with other components, especially in clocks and fast doors.

Components that connect to Calibrated Sculk Sensor

Where to go next from Calibrated Sculk Sensor: 6 component pages with a real connection to it.

Calibrated Sculk Sensor as a block: the four numbers that matter most

Bring a hoe: Calibrated Sculk Sensor has a hardness of 1.5.

Calibrated Sculk Sensor resists explosions to 1.5, the same as its hardness, which means TNT clears it. It glows at 1 whether it is powered or not.

Block values for Calibrated Sculk Sensor in Minecraft Java Edition
Calibrated Sculk SensorWhat Java Edition says
Calibrated Sculk Sensor hardness1.5
Calibrated Sculk Sensor blast resistance1.5
Fastest tool on Calibrated Sculk Sensorhoe
Light out of Calibrated Sculk Sensor1
Look up Calibrated Sculk Sensor on the Items siteBuilds that use Calibrated Sculk Sensor
All 37 redstone components, back to the overview
Calibrated Sculk Sensor, a Minecraft redstone component, added in 1.20
This is Calibrated Sculk Sensor in game, power sources, added in Minecraft 1.20, maximum signal 15.