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Detector Rail
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Detector Rail
| Type |
Non-Solid Block |
| Physics |
No |
| Transparency |
Yes |
| Luminance |
No |
| Blast resistance |
3.5 |
| Tool |
|
| Renewable |
Yes |
| Stackable |
Yes (64) |
| Flammable |
No |
| Availability |
? |
| First appearance | |
| Data value |
dec: 28 hex: 1C |
Detector Rails are a type of rail that acts like a pressure plate, and the first rail switch.
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 detector (including Powered Rail) and redstone placed under the rail, like pressure plates.
Contents |
[edit] Crafting
Detector rails are crafted like normal rails, but with a stone pressure plate instead of a stick, and the addition of redstone.
| Ingredients | Input » Output | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Iron Ingots + Stone Pressure Plate + Redstone |
|
[edit] 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 you 4-6 chimes before the cart reaches the crossing.
Detector rails can be used with a memory cell to power powered rails for long tracks.
Additionally, they can be used to create a one-way gate to a Powered Rail, with any carts coming the other way slowing down or stopping completely.
They also can be used to activate dispensers filled with arrows to create a minecart-friendly mob trap.
As a defense mechanism in multi-player or for your own challenge, you can make a rectangle using powered rails, regular rails, and detector rails. Then, make a box around it with glass (except the floor). At every detector rail have a redstone wire leading to a dispenser filled with arrows. When you begin the movement of the mine carts they'll pass over the detector, firing the arrows in a constant pattern until you run out of ammo. It is also good for speed killing by filling a hole with mobs and slaughtering the mobs inside; you can get a lot of resources this way.
They can be used for multi-layered piston doors with repeaters and redstone.
When used with compararators, they can detect how full a cart is.
[edit] Video
[edit] History
| Beta | ||
|---|---|---|
| 1.5 | Added detector rails. | |
| ??? | Fixed a bug where detector rails couldn't be placed next to any rail or the game would crash. | |
| 1.6 | Fixed a bug with sloped detector rails leading to opposite-sloped rails would only generate a signal for occupied carts (like a stone pressure plate). | |
| Official release | ||
| 1.5 | 13w10a | Added a texture for detector rails when active. |
[edit] Issues
Issues relating to "Detector Rail" are maintained on Mojira. Report issues there.
 Redstone |
|
|---|---|
| Redstone circuit | |
| Featured tutorials | |
| Power components | |
| Transmission components | |
| Mechanism components | |
| Miscellaneous | |
