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 do I use the /kill command to ONLY kill mobs?

I have a Redstone Power loop that connects to a Command Block that is set to kill all entities except for myself (/kill @e[type=!Player]), because I'm building a creative map, but don't want slimes ...
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2answers
88 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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1answer
16 views

Is there a way to set the rotation of an entity relative to another entity?

I want to make it so what ever direction I look a specified entity looks in that direction as well. Is there a way to do that?
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2answers
61 views

How to run commands depending on players scoreboard?

How can I teleport players based on their score on the scoreboard? For example, only if there scoreboard score is 1.
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0answers
27 views

How to randomly generate ores [on hold]

I have a superflat world, where I have some pretty big structures. I didn't think ahead when I was creating the preset, so there are no ores anywhere. I came up with the idea to (in creative) put down ...
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1answer
5k 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
103 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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1answer
56 views

Hopper is attached to chest but doesn't fill the chest [closed]

I am making a secret escape way in a jail but when i throw items in the hopper it wont fill the chest! And yes it's attatched to the chest
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0answers
25 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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2answers
86 views

How can I /fill water?

I have a huge amount of area that i need to fill relative to the player's place. I tried typing /fill ~-80 69 ~-80 ~80 69 ~80 water which basically fills a 160x160 hole 1 block deep relative to the ...
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3answers
2k views

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
1k views

How to use the scoreboard command in minecraft 1.8.1

trying to give a score to an arrow as it hits the floor so i can have a lightning bolt hit it when it hits the floor.All help appreciated.
106
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4answers
10k views

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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1answer
7k 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
502 views

Exactly how do the contents of a furnace effect a comparator?

Can someone tell me how the contents of a furnace affect a comparator? I want to create some automation in vanilla Minecraft, but don't know how the mechanics work.
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2answers
407 views

Trail of particles from a point to TNT

I have a map where I spawn Primed TNT then teleport it to a random Mushroom Cow which is invisible to make 100% random explosion. Now I want to make a particle trail from an orb kind of block in the ...
2
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4answers
314 views

Use a command block to “Sense” a player in a certain area

OK, so on my friends and my server, we have a skyblock map. My issue is when somebody joins they spawn above the Void. What I need is for a command block to determine if a player is near the Void and ...
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1answer
32 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 ...
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1answer
63 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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1answer
227 views

How should I go about “reseting” a large arena?

For a minigame map I am making, I have a large (320*320*116) destructible arena. Players get explosives, blocks, etc. and the entire area can change. At the end of the match, I would like to restore ...
12
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4answers
2k views

How can I make a Random Number Generator with vanilla redstone?

I'm working on a game for my Minecraft server that includes the element of chance. The idea is that there are 6 buttons. One of them (randomly determined by redstone circuitry) results in wealth, ...
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1answer
72 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 ...
7
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1answer
13k views

Can I use dispensers or droppers to auto-replant crops?

I'm working on a fully-automatic farm now that 1.5 is out. The plan is to use redstone to flush fully-grown crops into a channel to be collected by a hopper and then picked up by a cart. The issue ...
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2answers
49 views

Creating Quests with Command Blocks: Problem Testing Unset Objectives

I've got a Realms server, and I'm trying to create a series of quests that people can complete to up their overall "Defender of the Realm" score. However, I only want them to be able complete each ...
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3answers
1k views

Making a Station With Redstone Booster Track

Now I have finished my underwater tunnel I have built somewhere for my railway to stop at. The cart comes in from the left, hits the booster and then hits the sloped booster track (unpowered). I am ...
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1answer
11k views

How to set a command block with a command inside using the setblock command

Does someone know how to set a command block with a command inside using the setblock command? I have created this code /setblock <x> <y> <z> command_block ...
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1answer
48 views

Playsound when a player leaves and area but not when they enter

I've got a sound paspawn and want to play it when people exit an area but not when they enter or teleport into it. The sound should only be played once. Thanks for the help.
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1answer
55 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
147 views

How do I teleport an armor stand to an item?

I am designing a redstone mini-game, and I need the game host to be able to set spawnpoints. I was thinking that the host would drop an item (say red wool) and an invisible armor stand named "Red" ...
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3answers
4k 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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4answers
36k views

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 ...
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2answers
69 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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2answers
96 views

redstone problems

I have several Redstone contraptions on my map, but while trying to build another, I'm having problems with pistons deploying once and getting stuck deployed, even when power is removed. they will not ...
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1answer
58 views

Getting a row of pistons to trigger

I have been trying to get an row of 7 pistons to fire when a block has been pushed in front of the middle one. Every technique I try is not firing them. This is a Cobblestone floor maker. Here is an ...
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1answer
197 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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5answers
5k views

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 ...
2
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2answers
261 views

Using a command to replace wool blocks with command blocks which contain a command

I am trying to replace certain blocks in this case lime wool with a command block that contains a certain command. The following command to replace lime blocks with stone works. /fill ~-15 ~0 ...
7
votes
5answers
3k views

How can I generate a redstone signal when players are near?

Is it possible to construct something that will run automatically whenever a player is nearby, say within a chunk's range, without that player having to trigger something like a pressure pad or ...
19
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6answers
5k views

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 ...
8
votes
2answers
2k views

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 ...
2
votes
2answers
2k views

How to use a command block to welcome new players on a server in Minecraft?

Ok, so me and my friend own a server, it uses Minecraft 1.6.4. What I can't seem to figure out, is how to welcome new users to the server by saying Welcome USER To Northwood, when they join.
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1answer
3k views

how do you make commands not show up on the chat

I am making a server, and I put a comparitor clock down to constantly have clear weather. How do I silence the commands?
6
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4answers
21k views

How to make flashing lights in Minecraft with repeaters?

What is the best circuits for flashing lights with repeaters ? I've seen old school way with redstone but now with the repeaters, how to do it right ?
9
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2answers
2k views

How to Make an Instant Off/Delayed On Redstone Circuit?

I would like to make a circuit with one lever input and two outputs. When the user flips the lever, I would like for the one output that's ON to immediately turn OFF, while the other output which is ...
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1answer
111 views

How to make a chest open with redstone or command

I have Minecraft 1.8.1 in creative mode and I would like to make a chest open visually, using redstone or commands, without touching it.
3
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1answer
195 views

Automated Crop Farming

I am wondering how would I automate this underground farm so I can flick a lever and have it all collected by water like for Sugar Cane and Wheat or Pistons for say Pumpkins or Melons.
1
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1answer
166 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 ...
5
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2answers
896 views

How can I teleport to an unloaded entity?

I am using invisible invulnerable ArmorStands to create "warps" and "homes" in a map. The idea is that I can spawn them in with a specific name, and then teleport a player back to them like this: /tp ...
19
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5answers
22k views

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 ...
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1answer
65 views

How do I set up a scorebord variable to act as a bool and later test for it

I am making a capture the point map in minecraft in which two teams are capturing points. I intended a capture point that switches color every time a redstone pulse is supplied. now i have a problem ...