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Detector Rail
Detector Rail
First Appearance Beta 1.5
Type of Block Non-solid Block
Tool Used Pickaxe Graphic
Data Values Hex: 1C
Dec:
28
Technical Name minecraft:detector_rail
Blast Resistance 3.5
Stackable
Yes
64
Obeys Physics
No
Flammable
No
Luminosity
No
Transparency
No
Renewable
Yes
Cart on detector rail

Minecart on a Detector Rail activating the powered rails on either side and a piston

For other Rail related objects found in Minecraft, see Rail (Disambiguation).

Detector Rails are a type of rail that acts like a pressure plate, therefore acting like rail-switches.

When any kind of minecart is on top of the detector rail, it will generate a redstone signal. The signal will be transmitted to blocks that are adjacent to the rail (including powered rails) and redstone placed under the rail, much like how Pressure Plates work.

Detector rails can be found in the Chest Minecarts of Abandoned Mineshafts, but they can also be crafted in a crafting table.

Crafting

BlockCSS
Detector Rail
x6
ItemCSS
Iron Ingot
None
ItemCSS
Iron Ingot
ItemCSS
Iron Ingot
Stone Pressure Plate
ItemCSS
Iron Ingot
ItemCSS
Iron Ingot
ItemCSS
Redstone
ItemCSS
Iron Ingot

Uses

Detector rails can be used for many things. One train station-like feature could be activating a note block to indicate that a minecart is approaching, or a note block in conjunction with a redstone torch to have a grade crossing signal. It is easiest to simply wire a series of 4–6 detector rails, one around every 20 blocks, to a note block and an inverter that powers a Redstone Torch. As the cart passes each detector rail, it will trigger the circuit for one flash of the torch and a chime, thus giving one 4–6 chimes before the cart reaches the crossing. Additionally, they can be used to create a one-way gate to a powered rail, with any carts coming the other way slowing down if not stopping completely. They also can be used to activate dispensers to create a minecart-friendly mob trap.

Trivia

  • If a detector rail is on a slope with a powered rail adjacent to it on flat ground, it will not activate the powered rail when a minecart runs over it.


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