Redstone in Minecraft is most commonly found deep underground in the form of Redstone ore. When mined, it gives Redstone Dust which can be used by players to create complex redstone circuits.

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Is Minecraft Turing-Complete?

Minecraft has the redstone wires mechanism that can be used to build circuits. Is Minecraft Turing-Complete, i.e. can it be used to simulate a Turing Machine (if we ignore the problem of infinite ...
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8answers
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How to find a player's redstone clock (or other aggressive circuitry)?

I'm an admin for a minecraft server where I suspect one of the players has set up a fast cycle redstone circuit. The reason is the server uses what seems to me to be too high of cpu for only one or ...
26
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7answers
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How far can redstone current travel?

I know that there is a 15 block limit before a repeater is needed, however I am looking for the TOTAL distance that current can travel. Is it infinite? Can I keep adding repeaters and go on forever? ...
20
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How do you lengthen a redstone button signal in Minecraft?

I made a little redstone circuit to open a door (using pistons) with a button, but I was wondering how I could make the door stay open a little longer. I don't want to use a lever as I want it to ...
19
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3answers
8k views

What are some tips for mastering redstone circuits? [duplicate]

Possible Duplicate: How do redstone torches (circuits) work in Minecraft? New to Minecraft, just got beta, mastered most of the mechanics (mining, picks, the Nether, etc.) and now my final ...
19
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1answer
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What's the best way to build a track selector?

I'm building a new terminal for my minecart tracks: Currently there are 8, I may add more later. What I'd like to add is a single arrival/departure track, with buttons to select destination. ...
18
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3answers
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How to channel Redstone current vertically?

I'm making a door with piston sliding sideways that reacts to pressure plates. As the pressure plates are sending the current to redstone at a very low level, I need to raise it somehow, and this ...
18
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5answers
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What is Redstone used for in Minecraft?

I've found several piles of Redstone in Minecraft, but I can't seem to find a coherent explanation as to what it does or how to use it. Does anyone know what it's used for, and how to use it ...
18
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5answers
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How do I create a hidden staircase?

I'm currently trying to create a hidden set of stairs (made of whole blocks, not stair blocks) by having pistons stacked on top of each other, so that when it's deactivated it looks like a flat ...
17
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9answers
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How do I create a very long delay with Redstone?

The only things I've found so far are a cart method (which ceased working in 1.6), a dispenser method (utilizing the decay on dropped items, but this requires occasional feeding), and a binary counter ...
16
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3answers
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Is it possible to invalidate a dispenser after it has been used once?

I am making a map in Minecraft that other people can play. I have a dispenser with an iron, golden and diamond sword in it. I want the player to be able to use this dispenser only once. How would I do ...
16
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4answers
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What's the largest size of “door” I can open with a single switch?

I'm fairly new to using redstone, and I'm wondering what's the largest size of "door" that can be opened with a single switch? I have a huge arena, and I'd ideally like to be able to hit one switch ...
16
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2answers
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How do redstone torches (circuits) work in Minecraft?

I tried reading the minecraftwiki page on the subject, but without an understanding of precisely how the torches work, none of it makes sense. I have a lot of questions, so even an article explaining ...
16
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4answers
7k views

In Minecraft how do I randomise the output in a redstone circuit?

I have 5 buttons and only one of these can be correct, all others must be false. These 5 outputs will go into 2 outputs, in between there needs to be a circuit which changes which single button out ...
15
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5answers
6k views

Is there a more efficient way to wire a row of pistons?

I want to create two sets of two adjacent pistons with a two block gap between them for a melon farm. It seems as though I'm using a prodigious amount of redstone for each section. This is my first ...
15
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1answer
12k views

Keep some chunks loaded in Minecraft SMP

I am looking for a mod or something which would allow me to keep some chunks loaded on the SMP server I administrate. In fact, it is a redstone circuit including a clock under a huge mob trap which ...
15
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3answers
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Is it possible to power all the blocks in a wall?

Let's say I have a 5x5 wall that has redstone torches on each block on one side: Is there a redstone circuit that would allow me to power every block in this wall, so that all torches turn off ? ...
14
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5answers
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Is there a way to shut down a Nether portal with redstone?

Since it is no longer possible for flowing water to deactivate a Nether portal, you can't use pistons to push blocks into the nether portal and finally you can't move the obsidian powering the portal ...
14
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3answers
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How can I keep ghosts out of my machine?

I've been building a number of redstone circuits lately, and to keep them protected I've been enclosing each entire circuit in obsidian. However, recently I noticed that a zombie managed to spawn in a ...
14
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1answer
2k views

Why do Minecraft double doors behave the way they do with redstone? [closed]

I've seen videos that explain how to make redstone double doors, but none of them really explain why redstone double doors work that way, just that they do. Is there an explanation for their ...
13
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7answers
1k views

Powering a Redstone Lamp on top of a Piston

I am trying to design a street lighting system which is controlled by a light sensor. What I would like to have is for the redstone lamps to be lowered, flush with the ground, during the day but at ...
13
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2answers
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What property of redstone torches allows activating stacks of items?

Looking at this video about the new pistons in Minecraft 1.7, he has arranged 3 horizontal-pushing pistons in a stack vertically and is using an alternating pattern of redstone torches to activate ...
13
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2answers
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Fixing permanently dead redstone torches in Minecraft?

There seems to be a newish bug in Minecraft where redstone torches burn out sooner than they ought to, and never recover. (I think I heard that this can happen if you use /time set, but this is a ...
12
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3answers
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How can I randomly power one of several wires in Minecraft?

Given 5 wires (possibly more), I want to press a Reset button, and have exactly one of those wires, randomly selected, become active - and remain that way (until the next button press). What is a ...
12
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2answers
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Bidirectional (two-way) repeater?

I have a long section of rail that I'd like to serve with a single minecart. If I left the minecart on the other end of the railway, I'd like to push a button to have it sent over to the station I am ...
12
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1answer
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Redstone Golf: Light up a random torch [closed]

The Challenge: Design a redstone circuit that accepts an input from a button and lights up a random redstone torch. The Rules: One redstone torch should be lit, with all the others off. The state ...
11
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How can I get my redstone to activate adjacent pistons?

I'm trying to create my first circuit in minecraft: a - pressure plate p - piston d - dirt - or | - redstone   a----dddd pppp Pistons are placed over the dirt and there's water under ...
11
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2answers
876 views

How many possible outcomes will there be to my Minecraft lock?

I just built a lock for a door in Minecraft. The user has to pick the correct four colors out of twelve. Order doesn't matter. What is the probability of the user guessing the correct colors?
11
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1answer
514 views

Will My Gravel Crusher Work?

Of all the repetitive item-grinding tasks to perform in Minecraft, easily the most tedious task (For me at least) is grinding flint out of gravel. My usual method involves grabbing a shovel, ...
11
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1answer
461 views

How does this rapid pulser work?

While experimenting with redstone, I seem to have come across this strange piston-based circuit: Although it may not be obvious from the picture, this circuit causes the upper wire to rapidly turn ...
11
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1answer
533 views

Minetracks and Redstone - preventing the track from fixing itself

This is my current minetrack setup. The red marked part is supposed to go up, such that it works as a booster. On the left handed side you can see a wire going to the other track that is behind the ...
11
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2answers
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How can you turn a rapid pulser on and off?

We have built a number of large rapid pulsers for Floor D of Fosco's server's community wiki. D, obviously, is for disco. Disco seen from the deejay's point of view, with two jukeboxes. I just wish ...
11
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1answer
944 views

From under what blocks can daylight sensors detect sunlight?

I'm looking for a good block to cover up my daylight sensor that would look nice with my build design. I had read the Wiki page on it and tested a few blocks that I thought would have worked, some did ...
11
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3answers
502 views

Are there any fast 256 bit decoders for Minecraft?

I am currently working on a 256 byte RAM. To access one address i have to build a decoder. My current decoder is a big block of AND-Gates with redstonetorches to check each combination. Are there any ...
10
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2answers
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Is there a maximum limit to the number of blocks a piston can push?

For example: could you effectively push a line of blocks off into the distance? Is it limited by the loaded chunks? Or a shorter upper limit countable in blocks?
10
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4answers
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How can I bring zombies down to one-punch kills in Minecraft?

There's something about zombies in Minecraft that if you merely drop them down 23 blocks for the fall damage, they take two punches to kill, rather than one punch like other mobs. (23 ½ is the same, ...
10
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1answer
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How do you power consecutive blocks from below to make a large hatch?

The typical way to close/open several hatches in a row (e.g. to make a drawbridge) is to just lay a wire across the top of all the blocks the trap doors are attached to. How do you accomplish the ...
9
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7answers
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How do I create an inactivity timeout device?

I want a redstone circuit which has one input (or an arbitrary number of ORed inputs, but I can wire that up myself), one output, and where the output is on whenever the input is on as well as a for a ...
9
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2answers
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How can I preserve an active redstone circuit when I leave the chunk it's built in?

When I set up a redstone circuit for rotating blocks (with pistons) or flashing redstone lights, everything's fine, but when I exit that zone, the current is not saved, and when I return later, the ...
9
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1answer
611 views

Math behind Minecraft Redstone Torches Burning Out?

So, I know that redstone torches burn out, and according to the Minecraft wiki, there is some maths behind this. Unfortunately, the MC wiki isn't very descriptive (and mixes redstone ticks with game ...
9
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1answer
930 views

What is the most compact design of down-shifting double-pistons?

It is often useful to stack pistons to shift blocks by more than one space. As an extended piston can not be moved, the timing of the corresponding redstone circuit is of crucial importance. ...
9
votes
1answer
199 views

How can I get this setup to work properly?

I have a setup in a space-station with which I want an airlock with two doors: door X & door Y. I've remade this setup in the Overworld in a smaller fashion to show you how I've got it set up ...
9
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4answers
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How can you cook a cow with a dispenser and lava?

As of 1.6.2, what is the most compact way to cook a cow/pig/chicken with a dispenser and a lava bucket? Or what is the most compact way to send two fast pulses in order to activate the dispenser and ...
8
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2answers
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How do I turn Redstone into Redstone Dust in Minecraft?

I have 28 or so Redstones — not Redstone dust. I mined them with an iron pick. But all the things I see say how to use the dust, not the stones alone. Thanks
8
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2answers
2k views

Is it possible to lift a block from the bottom of the map to the top using pistons?

Can you raise/lower a single block by an arbitrary distance using pistons? Will this work with chests?
8
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1answer
336 views

How can I select a single bit out of an array of latches?

Let's say I have 4 latches, each representing a bit: I want to be able to see the value stored at a specific bit. I specify which bit I want to look at by entering a binary number via. switches: ...
8
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2answers
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Can I build a TNT cannon that fires the TNT directly upwards?

I've successfully built a cannon that will fire the player upwards to above the clouds by using this design (found on YouTube). The player stands on the stone pad, it triggers the TNT and the "water ...
8
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1answer
406 views

Do redstone lamps work underwater?

In preparation for TU12 on minecraft Xbox 360 edition,which adds redstonelamps, I've decided to make a redstone lamp system with a switch. Some of the lamps will be underwater, so I plan to use a ...
8
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3answers
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Instant open piston door with delayed deactivation with pressure plates

I was wondering if anyone knew of a proper way to get a pressure plate to trigger a series of pistons instantly, but have their deactivation delayed by about a variable number of seconds. I've tried ...
8
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Super compact piston door with button and pressure plate

Is there a super compact design (or what's the most compact design) for a piston door which should have a button on one side like this: and a pressure plate on the other side: ? I have tried a ...