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 could I test if a player is holding a specific item in slot 0 in Minecraft 1.7.9/10?

My question is how could I go about testing if a player is holding an Enderpearl in Slot 0 without mods, plugins or updates?
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4answers
910 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 ...
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1answer
64 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
5k views

How do I make a Stronghold locater?

I want to make a stronghold finder using TNT and redstone, but I don't know how. Every time I try it out I end up blowing myself up. This is my current design:
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1answer
54 views

Command Blocks vs Bukkit Plugin, Performance?

I am currently building an open world minecraft adventure map, primarily focused around compatibility for public multiplayer minecraft server. I would like to create events such as; spawning mobs when ...
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1answer
73 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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0answers
25 views

How to test if someone died twice and then put them in creative with invisiblite x in command blocks

I am doing a minigame map, and there are a couple events I want to set-up: If someone dies twice they will be eliminated and put into creative with invisibility X If all of a persons wool is ...
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1answer
107 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
1k views

Is there a way to place a command block with a command in a chest and/or dispenser?

I'm in the new snapshot and trying to make a random TP out of a dispenser and command blocks just like SethBling in his snapshot video just with the difference that I want to place the dispenser with ...
3
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2answers
178 views

How can I receive a success output signal from command block on a fill clock?

I have a setup like this: In which the yellow command blocks are a standard 20Hz /fill clock, and the blue is a command such as, for example: /spreadplayers ~ ~ 10 20 false @p[r=5] My problem, ...
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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 ...
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1answer
83 views

How do you make a item transporter in minecraft [closed]

Can you please help me on this topic? I just need basic facts about this.
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1answer
159 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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1answer
191 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
232 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?
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2answers
108 views

Command Block always activates Comparator

I am trying to do something with command blocks. I have it test for a player at a certain position. I have set up a hopper clock that activates a command block with /testfor @a[x=-611,y=80,z=714] ...
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1answer
37 views

minecraft command block /setblock is innacurate

I notice when I use command blocks and /setblock, i will always have to subtract the x-value by 1 for it to go in the correct place when i check where the coordinates for the block i want to be set. ...
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1answer
134 views

What is the purpose of a D Flip-Flop in Minecraft?

Based on the design of the circuit and on the description, what is its purpose? It says that it transfers the state of D to Q. This means it can store one bit. But what is the purpose of a D ...
2
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1answer
99 views

How can I make the redstone repeat a task x times and reset it self?

So I'm trying to make a redstone circuit that can repeat a task x amount of times and then reset it self. I was thinking of using a dropper and a hopper and use the hopper redstone signal (retrieved ...
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8answers
6k views

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 ...
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1answer
267 views

Redstone torch on a block that is powered directly by another torch doesn't turn off?

As far as I understood, if you power the block that a redstone torch is on, that redstone torch turns off. But as the question title states, if I power the block directly with another redstone torch, ...
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3answers
576 views

Best way for connecting this redstone vertically?

i am currently working on a big RAM in minecraft and i want to connect the inputs of each row vertically: I want to connect the yellow lines. It should be fast not use too much space.
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3answers
100 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
3k 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 ...
2
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2answers
253 views

Is there a way to display a player name in /tellraw command?

like the title says, I'm looking for a way to display a player name in a /tellraw command which is run by a command block. Example: /tellraw @a {"text":"","extra":[{"text":"A player has won the ...
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7answers
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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 ...
2
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3answers
103 views

What's the easiest way to test the effects of chunk unloading on redstone circuits?

I'm building a long-distance signal transmission line for a railroad system. I think it will work because the player moves through chunks with the signal, but I want to test what happens to the ...
2
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3answers
163 views

What is the command to make a command block emit a redstone signal after 20 mins

How can I make a command block emit a redstone signal after 20 mins. I want it to emit a redstone signal after 20 mins to power another command block that will have /tp to send all players to a ...
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1answer
276 views

How to make a block disappear after a certain period of time

So I am making a 'magic trail', which is essentially wherever you walk and jump, a block will be placed below you. Unfortunately, the trail will always stick around and never go away. After a while ...
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1answer
797 views

How do I make a “Rotary hopper clock”?

I'm working on a project that requires a fairly long delay. I found the "Rotary hopper clock" on Minecraft 101, and I do like the compact design it has to it. However I'm not entirely sure how it ...
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1answer
64 views

How to testfor blocks not people

how do I testfor blocks? like if I put down stone near a command block with a comparator attached to it and it will activate a piston connected by the comparator on the command block? please answer.
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1answer
927 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. ...
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1answer
201 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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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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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 ...
0
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1answer
130 views

Execute fill command relative to player

How can I execute the fill command relative to the player? If you are wondering why I am asking this, and for more information, reference my earlier question here: How to make a block disappear after ...
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4answers
17k views

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, ...
20
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2answers
33k views

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 ...
2
votes
1answer
109 views

Making a command block with a command block

I am trying to make a spaceship that can go up and down basically. When it goes up, I want the command block to have a command. That's where I ran into a problem; I couldn't find a way to move a ...
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1answer
105 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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2answers
89 views

Right side of piston-chest room not working

I'm new to red stone and am trying to make a chest room similar to Etho's where you walk on pressure plates and all the chests come through stairs. I was stoked that I got one side working, but the ...
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3answers
861 views

In minecraft how do you command conditions on to players

I'm developing a minigame server. I just need to know what commands to use, via command block, to give players special conditions infinitely such as; speed boost, regeneration, or jump boost.I know ...
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2answers
158 views

/testfor in minecraft 14w11b (snapshot of 1.8)

I can't test for people's locations using @a[x=-563,y=4,z=23]. Instead, the redstone comparator will just turn on even if no one is at -563,4,23.
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2answers
449 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 ...
6
votes
2answers
164 views

Minecraft redstone logic - comparing 6 inputs

i do have 6 inputs. 3 A inputs, 3 B inputs. Each one of them can be set to on or off. I now have to compare those 6 and look who has more on-inputs. A or B? Does anyone have a solution for this? ...
2
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2answers
868 views

How to use setblock command for placing stone button on the left side of the command block

I tried to use the command setblock ~1 ~ ~ stone_button but then it places a button on air. I'm running Minecraft 14w11b snapshot from the 1.8 snapshots. Does someone know how to fix this? Pictures ...
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1answer
102 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 ...
3
votes
1answer
106 views

Is there a way to guarantee every block is collected in info obsidian?

I have an info obsidian farm, which I'm trying to set up to AFK. Unfortunately, I seem unable to guarantee every mined block is picked up by my hopper system. In the image below, I have a minecart ...
17
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9answers
31k views

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 ...