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

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Behavior of a JK flip-flop (Minecraft Redstone circuit)?

I've built a JK flipflop - specifically, the A version, from Redstone JK flip-flops - and it works - sort of. It doesn't behave as described in the wiki, and I'm not sure if the wiki description is ...
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1answer
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Hopper Timer only exchanges one item?

I've been using "hopper timers" to create long delays for some automated harvesters, using what seems to be a pretty standard method with comparators. So far this has been working well. But for the ...
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341 views

Piston is destroying track

I have been following a tutorial on youtube regarding building a minecart station. Now I have had no issues whatsoever until I hit the cart loading section unlike in ...
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How to store big variables in a redstone RAM memory?

I've just made a simple RAM memory in Minecraft (with redstone), with 4 bits for the address and 4 bits stored in each cell. Our next goal is to store different kinds of variables in it and to process ...
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1answer
792 views

How to make a tree miller

Tree milling There are plenty of videos about already done tree miller. But none explain how to build one. I'm currently trying to create one and share it with you once done but I'm stuck. What I ...
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1answer
66 views

How do I make the time between dispensers longer and random?

I have five dispensers shooting out chickens (it's for a minigame). I've been trying to figure out how to make them drop randomly and not so fast. The image below is my current set up... As you can ...
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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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716 views

Error with Double-Dabble decoder

I'm using a Binary to BCD system using this double-dabble decoding device. It all seems pretty good, but it doesn't work properly. If you are unfamiliar with double-dabble, it should take an input, ...
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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 ...
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2answers
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When do redstone torches burn out?

I know that if I make a redstone circuit that switches too often, my redstone torches will 'burn out' and stop working. Under what circumstances does this happen? Will a slow circuit eventually burn ...
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What is the exact time on Minecraft that is sunrise?

What time does the sun rise on Minecraft? I would like to know because I am building a map where it needs that time for the map. By this I mean when the sun creates a purple color in the sky.
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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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Extend Pistons By Default in Minecraft [duplicate]

I'm working on my first redstone structure, so it's extremely simple. It's a secret entrance to my base, and it's just two horizontal stickypistons, one of top of the other, that extend one piece of ...
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How can I change a pulse into a state?

Is there a logic gate that changes a pulse into a steady state?
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3answers
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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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How can I connect a field of pressure plates to a single output?

I have a large flat area covered in pressure plates (30x70) and I was wondering how I might wire them from beneath to detect if a mob or object has touched ANY of them. I guess I could cope with a few ...
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1answer
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Activating one piston while deactivating another at the same time?

I just wondered if it is possible to activate one piston while deactivating another (activated) piston with the same lever. The idea is to pull some blocks into the wall while other blocks are pushed ...
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2answers
66 views

Most compact way to connect pressure plate and piston

I am trying to make a mob spawner trap with instant fall to lava lake. The actual thing I need to connect is (the block below piston isn't needed): I figured out double negation connection with ...
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1answer
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How do Minecart with Hoppers work?

The Minecarts with Hoppers are very confusing and after looking into Minecraft wiki page I couldn't find an answer on how I should use the hoppers. What are some of the uses for Minecarts with ...
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How do I create a redstone circuit whose output depends on it's previous input?

I have two inputs, A and B, and I want them to perform as so: |------------|-----------|--------| | Prev State | New State | Output | | A B | A B | | ...
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1answer
230 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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2answers
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Help with auto Punkin farm/melon

I want to build this (Punkin/melon farm) on my world but I want to build a huge tower of it but I don't know how I can transport the items down to a chest without using more than a 100 (example) ...
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4answers
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Reverse Timing using redstone

I am looking to reverse the timing of redstone for an airlock system I'm building. I have tried using ABBA and ABAB switches, but to no avail. I would like it to work as follows; -- Stage 1 -- Inside ...
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1answer
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What is the actual “spread speed” of water and lava in the context of a stone generator?

I'm currently experimenting with stone generators, e.g.: I'm having problems figuring out what speed of pulse do I need to provide to the piston in order to maximize the speed of stone production. ...
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1answer
341 views

Redstone loop not working

After building and exploring in Minecraft, I chose this sticky piston mob grinder to learn about redstone - which may have been a bit too ambitious, as I'm having problems with the loop which sends ...
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1answer
565 views

How to simulate polyhedral dice in Minecraft?

A dispenser can simulate dice of up to nine sides by random choice, and there are redstone circuits for simulating six-sided dice. But how do you simulate, say, ten-sided, twelve-sided or twenty-sided ...
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1answer
252 views

Is redstone deterministic?

In circuits not using pseudo-random 'dice-roll' type randomizers (i.e. a fast clock that the player stops to produce a random state), is the output state always the same for the same input state?
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636 views

What is going on with these pistons?

I was messing around with pistons today, and I cam across this weird senario whhere they are not working as expected. I took some screenshots, they are Here and are in order. I have three pistons on ...
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1answer
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unpowered but extended pistons that only retract when there is a block update

Thanks guys for answering my previous question. I have some follow up on it. I did mentioned that I have changed my enderman farm design since then and have new problem with it. So here is the ...
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1answer
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How can I make a functioning piston elevator in SMP

I've recently been trying to build a piston elevator in SMP from bedrock to the surface. However, every design I've tried (some of my own, and some from Youtube) results in me getting stuck in a block ...
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2answers
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Powered rail not powering down

I've built an underground minecart track to allow me fast travel between two outposts. In the middle I've placed a powered rail, with a long redstone line to each post. I connected these two to a ...
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1answer
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How can I make a reliable and compact random timer?

I need to make a reliable random timer that powers a redstone wire and that is as small as possible. It should send about a pulse every second or half second, but obviously be slightly varied. It ...
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How do I make a 1x1x2 piston door that opens when I step on a plate and not the other way around?

In Minecraft I need to make a piston door that opens when a plate is stepped on, it is normally the other way around. Does anyone know how? A video would be helpful but not required.
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1answer
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I want to be able to make a three person winners circle

I basically want three people to stand on three different pressure plates. I want them to somehow all connect in a way that when they are all activated it sets off TNT. I don't want the TNT to set of ...
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1answer
540 views

What do noteblocks do?

I have been playing Minecraft for some time, and am pretty good with redstone. However, I was spamming the Random Page link on the Minecraft wiki and came across the Note Block page. Of course, the ...
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2answers
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How can I make automatic lighting in Minecraft?

I have been trying to create a redstone system for my "town" on multi-player and was using some guides on creating automatic lighting using redstone, water, and pistons, but it is not working properly ...
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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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2answers
573 views

Why do two identical redstone contraptions not do the same thing?

I was experimenting with redstone manage to build the first example were everything works thine. I've built the exactly same thing in my building but there it won't work any ideas why? (the delay is ...
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2answers
110 views

Why does extended piston become stuck if air above it is powered?

To reproduce this problem make layout like this and then power the piston. Once the piston is extended, removing the power source will not retract it: Since piston head block is transparent, I see ...
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2answers
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What's wrong with my command? (might be me or a bug)

So I have this simple setup to show what the problem is: this command block checks for a quartz block above it: this one checks if the left command block's previous output is true: But then when ...
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Redstone rendering far away from player

When I create really big circuits and I go some distance away, the redstone mechanisms stop working and freeze. And if I come back they are still frozen. I have to click on a wire or repeater and ...
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3answers
141 views

How to make a Pulse only activate on the second time activated?

I've hit a problem while making a map. I want one command block to activate on the the first pulse but another when I hit the button a second time. If there are any Redstone pros out here then could ...
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3answers
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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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2answers
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I need to be able to press a button multiple times but only have one output

I want a button that, when pressed five times, outputs a signal. What redstone device should I use?
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1answer
525 views

Is there a new fix to restart redstone clock

I think everyone in this section knows about redstone clocks, and that sometimes when you log in and out, the repeaters get stuck. Sometimes they get stuck when you are just a little but far away or ...
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1answer
89 views

What tick is right before 0? [duplicate]

I have tried using /time query daytime to find out an estimate but I am trying to make a redstone Calendar and I need to activate it right before daytime tick 0 so I can restart the Tick Counter. ...
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1answer
712 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.
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1answer
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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 ...
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How do I move redstone signals vertically (for a vertical sticky-piston door)?

I'm trying to make a variation on the sticky-piston hidden door, in which two sticky pistons are activated by a pressure plate in a corridor to reveal either a hidden room, or a treasure chest, or ...
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1answer
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How do I make a pulse generator in minecraft Xbox 360?

Previously, I tried hooking up a "rapid pulser" to some dispensers, but it failed miserably (never lasted for more than 2 or 3 seconds) so I decided to try out a 1 tick "repeater clock"hooked up to ...