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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How can I change the outputs from two different wires to the same state (on/off) using one input, regardless of the previous states of the two wires?

So, I've set up two traps near my base, hooked up to pressure plates.Inside each trap, I have some sticky pistons with blocks attached, such that when extended (turned on) no power reaches the various ...
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1answer
870 views

In Minecraft, what is the most space-efficient way to construct AND and OR Redstone gates?

With Redstone you can create wiring and circuitry. Using this, it is possible to create complex devices and even "programs". Unfortunately, the size of such projects usually tends to be massive in ...
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1answer
93 views

Place block in Minecraft with redstone?

I'd like to get ore, and place it (without command blocks) anywhere near the contraption. My question is could it be possible to do this, and if so how? Note: it does not matter on the timing the ...
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1answer
2k views

How to test for time of day with command block in Minecraft

I'm trying to setup something similar to the MindCrack team's current server set up for my single player world so that the world border expands slowly as I play the game. I already know how to work ...
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1answer
118 views

Can I shrink this three-pulse-generating circuit?

I guess what I'm after here is a code review for my redstone. I've set up a circuit so that when I press a button, 3 items get dispensed from a dispenser, but it seems rather large. Can anyone ...
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1answer
238 views

Easy redstone memory

I want to make a simple one-bit storage to check if someone else entered my house. For the person detector, I use the magic plate from thaumcraft. But how can I build a circuit memory which changes ...
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2answers
121 views

How can I null the output of this circuit when a switch is activated?

Specifically, how would I cancel the redstone signal going to the stone block? What type of logic gate would I need? I want to be able to active a switch on the right input (in the screenshot) that ...
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1k views

How many ticks must I use to get only one item through a hopper?

If I have a powered hopper with items in it, and I want to let one item through, how long do I have to un-power the hopper? 1 or 2 ticks? All I know is that a hopper transfers items at the rate of 2.5 ...
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2answers
653 views

How can I control a sequence of outputs via a single input?

Ok, so I'm making a map which needs a level system. By level system I mean: Push the button first time,output A lights up. Push the button second time,output B lights up. Push the button third ...
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1answer
321 views

What is the actual function of the third torch in the comparator?

I have heard different explanations for what the function of the third torch is in the comparator. But I have never gotten a definite answer for what the use is being able to right click on the ...
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1answer
58 views

How can I detect if only one out of 8 lines of redstone is on and block the others from passing trough?

I have a (very) big redstone contraption used to store numbers for ALU's or minecraft computers. As of with most inventions, They get upgraded to preform better/get smaller from time to time, so to ...
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1answer
260 views

How do I teleport a player to another entity while changing the player's rotation?

I want to be able to teleport to an entity but keep my original rotation? I tried /tp @p @e[type=ArmorStand] ~ ~. I have looked everywhere and tested even the most stupid lines of code, in hope I'd ...
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1answer
130 views

Check if a player is blocking

Is is possible to check if a player is blocking? If so, how is it done? It didn't have any stat that seemed right on the wiki, and I didn't see one when I hit tab on "/scoreboard add derp". Thanks for ...
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1answer
115 views

How can I pulse one of several wires in Minecraft randomly?

My question is a bit familiar to How can I randomly power one of several wires in Minecraft?, but slightly different. Let's say I have 5 wires (or more), wire A, B, C, D and E. Now, I want to ...
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3answers
115 views

Is there a logic gate for this?

I have a set of lights that turn on based on time of day. I want to be able to turn on a separate switch and have the lights blink on and off with a clock I've already built. So basically, is there a ...
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2answers
145 views

Need help with redstone logic memory cells

I need some advice if possible regarding making a memory cell, specifically what type of memory cell I should look at employing. I assume I want a T-Flip-Flop but I'm not too sure. Basically the ...
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3answers
571 views

How to build a two bit binary to decimal decoder using Redstone?

This is the logic circuit i want to create in Minecraft Can anyone make one for me because the one I am making is having lots of problems and is too messy. Redstone signals get jammed and they stay ...
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1answer
384 views

How can I make a clock with pistons in Minecraft?

I've been wanting to know how to make a piston clock in Minecraft. I've seen them before, but I don't have a clue how they are made. Is there an easy tutorial or something that I can follow? How can I ...
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32 views

command to launch players into the sky? [closed]

I've been trying to find something for primed tnt on how far it'll launch you but I haven't found anything yet. I want to make a cannon that launches you into the sky and once you're at the peak, ...
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1answer
90 views

Minecraft - Implement Random Access with Redstone

I'm trying to build a machine in Minecraft that will act similarly to an array. It will be implemented using physical blocks, not using a traditional redstone CPU type architecture of redstone signal ...
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2answers
108 views

How to reset a command block's status?

I'd like to use a comparator to act when e.g. a testforblock command block attached to a button triggers. But the comparator changes its state only when the button is pressed after the test result ...
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2answers
157 views

execute command setblock

Ok so when you throw a snowball I have /execute @e[type=Snowball] /setblock ~ ~-1 ~ minecraft:ice' So this makes an ice path following under the snowball. I had some code something like this and ...
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How do I teleport players based on their teams?

I'm making a costum map which uses comandblocks to teleport players to a spot. The commandblocks are setup under two rooms. (One for team red players and one for team blue players). I need to teleport ...
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0answers
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“Refilling” items in a chest [duplicate]

Let's say that I have 3 chests, each containing one of these items: A full set of armour (Leather, White Stained) A Named Lever A Named and Enchanted (Unbreakable) Bow. How can I "restock" these ...
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Efficient design for a self regulating villager breeder?

I'm playing on a SMP server and would like to begin a villager trading industry. I've looked at lots of designs for villager breeders that can be started easily (no nearby villages, so I'll have to ...
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Telling if a Redstone Energy Cell is full -Recent Tekkit- [duplicate]

Is there any way to tell if a Redstone Energy Cell is full in the Galacticraft version of Tekkit? Any form of emitting a redstone signal when it is full to turn off my engines would be great.
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How do I make a 1 minute delay circuit? [duplicate]

I am trying to make a circuit with a delay of 600 ticks. I looked this up on the Minecraft wiki and found the following diagram: However, when I tried it, I couldn't get it to work. How can I make ...
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2answers
279 views

How do I replace the non-air blocks in a 5x5x5 area?

Is it possible for me to replace all non-air with stone blocks in a 5x5x5 box around where I am having the command executed? What is the command to do this? Note: I believe that I can do it by ...
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1answer
176 views

My wooden pressure plates aren't deactivating

Ever since the 1.6.2 update, if something activates a wooden Pressure Plate it will stay activated. It only happens on one world, and even then only in 2 chunks (my HUGE survival world). Is there a ...
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2answers
653 views

Redstone door lock (memory cell)

I want to make a pvp map which has 2 spawnpoints on the map. The spawnpoints are closed off with an iron door. The teams can both get ready by flipping a lever. Now i want to make it so when both ...
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2answers
556 views

How can I make Redstone respond to a player having no money in their account?

I am building a gambling machine on a Bukkit server with the Vault plugin, and I would like to do an error check. When the player wants to play the game, they need to have X dollars in their bank ...
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520 views

Trigger command blocks remotely?

I am currently working on a minigame, and I am trying to remotely trigger command blocks. Is there any way to use a lever and a command block to activate another command block 4K blocks away? For ...
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5answers
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How to make a command block say something only once in Minecraft?

I am creating an adventure map and needed to know how to make a command block only say something once in the chat menu. PS: I would like this to be under my floor because it is supposed to be an NPC ...
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1answer
1k views

Minecraft Mob-Spawning in vanilla 1.8 server [closed]

I am making my own server and I am trying to make mobs not spawn in a certain area, I can't do a /kill @e[type=!Player] command because I have armor stands! So I was wondering what you guys thought. I ...
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1answer
242 views

How does redstone power side blocks? [duplicate]

I'm currently looking into the how redstone works in Minecraft and I stumbled across this behaviour and I can't explain why this works. Legend: Obsidian Block: O Redstone Wire: |, +, - Glowstone ...
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3answers
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How can I toggle an output using the same input pulse?

I need to make a contraption that takes a pulse and toggles a switch from on to off. Then when the pulse happens again, I need it to turn from off to on.
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1answer
228 views

Minecraft /testfor problem

I have another problem with my Minecraft PvP map. I'm trying to set up a command block that checks when a player is standing on a block and if so it will give them jump boost so I used this command ...
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1answer
8k views

Summoning PrimedTnt with custom fuselengths

How can I summon PrimedTnt with a custom fuse length? I know I have to add some attributes to it, but I'm not sure as to how I can do that. Does anyone know? Also, is there a way to turn TNT explosion ...
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1answer
236 views

Dropper redstone bug

been playing around with redstone again until i discovered this strange beviour: I used to droppers on top of each other and a chest on top of that to transport some items from the bottom dropper to ...
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1answer
6k views

Minecraft command block specifiers “[Data value] [Data tag]”?

When using command blocks some commands ask for [Data value] and [Data tag]. I know what Data values are. But what are Data tags? How do translate the Data specifications that I need into "command ...
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1answer
2k views

Can I use /testfor on zombies?

I know how to use the /testfor perameters in a command block to scan for players. But I need to test for zombies. Can you test for things that aren't players? If so then what else can I test for and ...
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1answer
40 views

Activate clock only when command block output is true

I'm trying to activate a clock when a player looks south. I got the command for it, but when I try to make a comparator clock even if I'm not looking south the comparator clock is still going, so how ...
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1answer
245 views

How do I keep my hoppers from filling up when chests are full?

I'm not sure how to do this, but i believe it is possible. Basically, I want to know how to have a chest system, that when a chest is full, (no matter how many items there are per slot) the hopper ...
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2answers
85 views

Testing for a block in a certain radius

I am making an arrow that explodes when it hits anything, but I need a way to testfor all blocks within a radius of 2 blocks to see if they're air or not. The only problem is, I dont know how.
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3answers
5k views

How do I spawn potions with Command Blocks?

I want to get super speed, like a speed III for 1:00? I want it to be a splash potion that spawns from a command block, I know it can be done, since potions are entities.
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1answer
331 views

Inflict damage when player is hit by minecart

Is it possible to test when a player gets hit by a minecart, then inflict damage on the person hit by the minecart based on the speed of the minecart? If testing for the speed of the minecart isn't ...
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1answer
133 views

What's a 2×4 ultra clock?

In this video, the uploaders describe a mechanism to "automate" the mining of trees by filling blocks around and above tree you mine with air, while accelerating the speed at which "random ticks ...
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1answer
621 views

Redstone torches spasming out?

In my server when i place redstone torches and work on something else while on the same chunk the redstone torch can sometimes flicker even when on its own.
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1answer
53 views

Add multiple commands to a single command block, and alternate with +/- redstone power

I am playing around with command blocks, and I just wanted to know if you could have multiple commands in one command block. If you can, is it possible to have one of the commands active when the ...