Questions about redstone contraptions and machinery in Minecraft. For command block contraptions, use [tag:minecraft-commands] instead.

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3
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1answer
260 views

How to create a display

I am trying to create a msg display for a friend in Minecraft. The display works with 2x2 "pixel". However, I cannot come up with a way to make the 2x2 pixel light up, in a repeatable, stackable ...
3
votes
2answers
420 views

Will this Instant Repeater design work reliably?

I'm currently looking into the mechanism of redstone in minecraft. For one circuit, I need an instant repeater, and reading Minecraft wiki, the smallest one so far is the 4x5x3 instant repeater by ...
3
votes
1answer
1k views

Redstone torch not working in Minecraft beta 1.1_02?

Torches seem to be stuck ON all the time. Given SrrTrr (Switch, redstone, Torch) the torch and all the redstone are lit regardless of the position of the switch. Removing the torch shows the ...
3
votes
1answer
105 views

Redstone circuit that activates on short pulse and does not activate on longer pulse

I made a circuit that activates on a long signal but I am missing one that activates on a short pulse and does not activate if the pulse time exceeds a certain pulse. Everything I made still activates ...
3
votes
1answer
76 views

Vertically stacked armor stands should have increasing scores, but don't

I'm trying to make a goalpost system for a custom map I'm designing. The idea is that a goalpost--consisting of a tall stack of iron bars--would have variable height, and at each block up and down the ...
3
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2answers
213 views

How to detect if a command block is outputting a redstone comparator signal?

I want to make a pretty much redstone-less contraption, so I want to detect a command block's NBT data, so that when it gives out a comparator signal, another command block detects that and then does ...
3
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1answer
891 views

Can I use red stone in pocket edition? [duplicate]

I am a Minecraft pocket edition player. Can I use redstone for things?
2
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3answers
6k 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 ...
2
votes
1answer
336 views

Minecraft greed trap

I'm making a trap so that when an object is removed from the pressure plate, it blows up. But Im a bit stuck. The pressure plate does not change the state of the redstone torch on the endblock. I need ...
2
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2answers
294 views

Can I store more items per block then a Chest?

Would there be a way to store more items per block then a Chest, for example, using some Redstone/commands? I need to store 60'000 items (stackable by 64) in minimal space - less then the 35 Chests it ...
2
votes
3answers
396 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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2answers
1k views

How can I pause this redstone wall rotator as nessecary?

Back...with another Minecraft device. First off, I remember seeing a device like this on Reddit/YouTube a long time ago, and I've since forgotton how it was done. The way the device works ins ...
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votes
4answers
540 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 ...
2
votes
2answers
7k views

Why Isn't The /playsound Command Working In 1.7.2?

I am currently playing Minecraft 1.7.2 and am using a command block in a roller-coaster. I am trying to make a command block play the sound "moan1" from the "resources" folder in the directory ...
2
votes
1answer
708 views

Confusion on Redstone Wire Transmission

According to the wiki on Redstone Circuits: Redstone Wire powers itself, the block below it, or the block it is pointing to. I'm having trouble understanding what this is saying. According to the ...
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votes
2answers
7k 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:
2
votes
2answers
287 views

Minecraft 1.9 Data Tags changed?

Ok so I have this command here: /summon Item ~ ~1 ~ {Item:{id:spawn_egg,Damage:65,Count:32,tag:{display:{Name:"Destruction Pellet",Lore:["Place this item in a dispenser and power","to destroy the ...
2
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2answers
471 views

How do I use command blocks to make a mob arena in 1.8?

I've been wanting to make a mob arena map for about a day, but I don't know how. I know how to set up the shop and everything else, but I don't know how to spawn the mobs. A lot of people say, "Just ...
2
votes
1answer
102 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 ...
2
votes
1answer
367 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. ...
2
votes
1answer
4k views

Server-Friendly Minecraft Elevator?

Is there a server-friendly redstone elevator I can build in Minecraft? The "zipper" version doesn't seem to work, unfortunately.
2
votes
2answers
63 views

Efficient way to power stacked rows of pistons?

How can I power two vertically stacked rows of pistons, hopefully with a minimal number of repeaters? I can get the bottom row powered with just a line of redstone on the gold blocks behind as shown, ...
2
votes
1answer
62 views

How to /testforblock in the overworld from the nether

Please watch the video first to have a better understanding of the question Now I already know how to do the setup for the chambers for both sides, but my problem is ...
2
votes
1answer
92 views

How many ticks for stone to form

I've been playing with new designs for a stone generator, playing with how fast I can get it running. I'm trying a redstone clock / pulse shortener this time. Is the rate that lava flows in to ...
2
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2answers
2k views

Minute Long Redstone Delay

Currently I have something like this set up: B-R-R-R-C-R-R-R-C-R-R-R-C (etc...) B stands for a redstone block, R stands for a repeater, and C stands for a command block. I have a line like this ...
2
votes
1answer
176 views

How can I build a redstone-powered vehicle?

I tried to build a redstone vehicle in Minecraft (vanilla), but my attempts proved futile. I tried to build it using pistons, wire and some pushable blocks, but it didn't work, because the wire breaks ...
2
votes
1answer
59 views

Stop Wolves From Becoming Angry Through Walls

In a custom Minecraft map I'm making, I have a pet shop where you can spend points you've earned on the main map levels to "adopt" pets. This includes horses, cats, and dogs. That's all fine. However, ...
2
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1answer
95 views

Redstone Producer/Receiver

In Minecraft Pocket Edition, there was recently a new update including basic redstone contraptions. I have experimented around, but I can't find: What a Tripwire Hook does, and how it produces ...
2
votes
1answer
109 views

Test true if NO ArmorStand

The system I'm setting up is supposed to teleport players forward if an armorstand is within a radius, and down if there isn't one (to find a vacant area for the player). The commands are supposed to ...
2
votes
1answer
642 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 ...
2
votes
1answer
2k views

Only allow certain blocks to be broken with mining fatigue

I want to make sure players cant break any blocks but wheat, while they have the mining fatigue effect. Is there a way to detect if they are trying to break the wheat or is there a way to only allow ...
2
votes
4answers
3k 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] ...
2
votes
1answer
501 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 ...
2
votes
2answers
239 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 ...
2
votes
3answers
1k 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 ...
2
votes
1answer
797 views

Briefly turning an output on when a switch is turned off

I'm not sure if there's a simple way to do this, or even a way at all. Basically what I have is a switch which is on, and two outputs. The first output is very simple - it goes on when the switch is ...
2
votes
1answer
6k views

Minecraft Double Switch Door

I'm trying to make a base with a hidden door that can be opened from the inside and outside. I was wondering if there was a way of making a circuit that could be operated from two different switches ...
2
votes
2answers
853 views

Changing delay with NOT gate?

I just asked this question 30 minutes ago and was told to use a NOT gate It worked at first, but I had to delay one of the pistons 100%. The problem is when they are to go back to the starting ...
2
votes
1answer
600 views

How to simulate a deck of cards in Minecraft?

A dispenser can eject one of nine different items at random, simulating a deck of up to nine cards (as of 1.6 it is no longer biased toward certain slots). How would you simulate a deck of cards with ...
2
votes
2answers
53 views

Minecraft pulse generator is permanently powered if i toggle too fast

Id like to know if there is a way to make it irrelevant how fast you toggle the switch. The result should allways be a single short impulse. This is the regular behavior: And this is the behavior ...
2
votes
1answer
45 views

How to test for if all players of a particular team are on a particular area? [duplicate]

I'm making a minigame map in Minecraft and I cant figure out how can I test if all players from a particular team are in a particular area using Command Blocks (with a radius of 8 blocks, if all ...
2
votes
1answer
95 views

How do I make the player name show up on a /tellraw command?

So I am currently making a minecraft custom map (for 1.9). I want to make the player "say" something using /tellraw commands. I did figure out how to make the player name come up using /say commands, ...
2
votes
1answer
211 views

How do I make a clickable signs set a block?

I made a command where there is a clickable sign that teleports a player to spawn. Here is the command: /setblock ~ ~1 ~ minecraft:wall_sign 2 replace ...
2
votes
3answers
286 views

Can I make an invisible block which only people with a specific item can go through?

I am currently making a server, and I want to make an invisible block in which only people with a specific item can go through(in this case, a nametag called:key). Is there a command to do so? I am ...
2
votes
2answers
2k views

How do you clear all item drops in Minecraft?

How do you clear all item drops in Minecraft? I want to have something activated by an Item landing on a golden pressure plate, but It can only be activated once. Is there any command block command ...
2
votes
2answers
147 views

Setblock clock with scoreboard doesn't work in Minecraft

I've been trying some things with scoreboard lately and I always get to the point where I need to use the following commands. /scoreboard players set @a Holding 0 /scoreboard players set @a Holding 1 ...
2
votes
1answer
87 views

Easy way to execute remote admin commands?

So I'm finishing up my survival games map, adding final touches and such, but... I need an easy way to execute remote admin commands, like setting my own gamemode to creative, starting the game, or ...
2
votes
2answers
1k 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 ...
2
votes
1answer
134 views

Test for birch log in Minecraft

How do i get my command block to test for a birch log in 1.8? What are the new item names? I have already tried names like birch_log, 17:2 log:2 and so on. Google is against me on this as well.
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votes
3answers
5k 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 ...