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

learn more… | top users | synonyms (2)

5
votes
1answer
342 views

Why remove redstone dust from my command block contraptions?

Whenever I show my command block contraptions to my friends, they always comment that I should remove the redstone dust from them. They say it causes lag and that redstone can be unpredictable, but ...
2
votes
2answers
144 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 ...
-1
votes
1answer
102 views

Button interacting with trapdoor

I was making a chair that has trapdoors. I have a button that is supposed to power redstone behind a block but powers the trapdoor and the door of this chair. Tutorial: ...
3
votes
2answers
235 views

How can I get redstone working again?

I am making a huge zombie siege map with tons of redstone. Just recently, I tried to make a comparator clock to activate a command block. Instead, It only turns on and off about once or twice a ...
0
votes
1answer
98 views

Q. What is the most effective /testfor command?

Ok, I've tried many variants of /testforcommand and tried them in the lastest snapshot, 15w31c, to 1.8.6 and nothing works AT ALL. The list of commands I've tried: /testfor @p ...
1
vote
1answer
680 views

How do I make a command block output a Redstone signal when it is successful?

I want to know how to make a command block output a Redstone signal when it is successful.
1
vote
0answers
19 views

Greg's SGcraft stargate redstone issues

I am using Greg's SGcraft for minecraft 1.7.10, and the stargate is supposed to output a redstone signal when active. It does that, but when the gate turns off, the repeater stays active unless I ...
2
votes
1answer
89 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 ...
0
votes
1answer
48 views

How would I testfor players scoreboard amount in a specific location?

I have been trying to find a way to testfor a player with a score of 1 in a z.y.z.r location. what I've tried was /testfor @p[X,Y,Z,R,score_Var_min=1,score_Var=1] but it doesn't seem to want to work. ...
0
votes
2answers
294 views

Prevent hacking on Vanilla server

I have a vanilla minecraft server (1.8.7) and I've taken some measures to prevent hacking, but I still have people logging in and breaking stuff at spawn. Is there anything else that I can do to ...
4
votes
1answer
223 views

How can I detect if a person takes fall damage?

I am trying to make a command block creation that when you take fall damage, it gives you an effect. I am not using any of the methods that detect for air -1 meter of the player ( 1 , 2 ) because ...
0
votes
1answer
153 views

Using spreadplayers to tp them to armorstand in unloaded chunk

I'm making a new public server. Right now, I have a book with set home / go home / tp to Spawn functionality. The set home uses a trigger that places an invisible armor stand named Home (and deletes ...
0
votes
2answers
326 views

How to activate a lever with another lever?

I am trying to build a Wimpy in minecraft, and it uses a rail system to deliver food. I have two sides of the restaurant, but one rail switching between the two sides. A redstone torch doesnt work, so ...
1
vote
3answers
568 views

How can I make my far away command blocks work

I have command blocks on my adventure map, the map is partially parkour and has no ground just floating islands, I don't want people too see the command blocks so I put them 200 blocks away and ...
4
votes
2answers
142 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 ...
1
vote
1answer
121 views

Can you make retractable sticky pistons, while extended, in Minecraft?

I was wondering if there is a mod or something to allow sticky pistons that are extended to be pulled or pushed by other pistons? There must be a way to make this work, because trying to make a ...
3
votes
2answers
783 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 ...
1
vote
1answer
243 views

Select player that does not have a specific score set

I want to select all players that do not have a specific scoreboard objective value set. I have tried doing testfor @a[score_hasJoined=] and testfor @a[score_hasJoined_min=], but it still won't work. ...
0
votes
1answer
72 views

Redstone NOR gate with one of two inputs adjacent to output

I have a design issue with creating a NOR gate. I have a sticky piston facing upwards and a block immediately to the side and one unit above it with a stone pressure plate on top of it. About 6 or 7 ...
2
votes
2answers
648 views

How to test for blocks within a certain radius of a player?

I'm trying to make a custom crafting system, but I'm not sure how to test for blocks within a radius of players, not command blocks. Specifically, I'm attempting to test if there is a dropper within ...
1
vote
2answers
161 views

Minecraft - Executing on an entity is not working

When I put in this command in a command block: /scoreboard players set @e[type=Item] PigProgress 1 {Item:{id:319}} It says: The dataTag does not match for c97c9605-6b59-44e8-bf24-aa2e46c9c746 ...
3
votes
1answer
211 views

Why won't this redstone and command block setup work like the other one?

I'm trying to make an RPG adventure where the player can interact with different stuff. For example, if he walks up to a crafting table, then this text should come up in chat: [Robert:] I wish there ...
0
votes
2answers
60 views

comparator problems

While I was playing with some redstone tried to make a money system to sell iron. However when I power the command block with a button, the comparator after it stays on. the command being run is: ...
-2
votes
2answers
1k views

How do I make redstone repeaters work?

I have tried to have redstone repeaters, to keep my redstone chain going, but it doesn't work. How do I make it work and why dosen't it work?
3
votes
1answer
124 views

Command Blocks and Redstone Comparators

So I am giving Command Blocks a first try and I've found that with the comparator you can make it so it perceives a player is near them (and of course if you use the [r=x] tag. The scenario I am ...
0
votes
1answer
97 views

How to set a command with a comand block?

I want to set a testfor commandblock. This is the command I want in the block: /testforblock 1998 10 657 glass. What is the setblock command to have this in a commandblock?
0
votes
2answers
217 views

Vanilla 1.8 detect new player

In vanilla 1.8 using command blocks, is it possible to change a player's spawn point after they first join a server? When a player first joins a server they are in location "A" When they press a ...
1
vote
1answer
1k views

Execute or Testfor a named dropped Item?

I have a contraption set up where if I drop a player head named Camera1 (it looked very much like a camera) a clock will find it and replace it with an armor stand that is also wearing the head. It ...
3
votes
1answer
838 views

Is it possible to make piston flying machine that bounces?

I allways dreamt about making a piston device that can push itself. Now, with the addition of slime blocks, my dreams came true. The only flaw of these machines is that they work until they hit some ...
0
votes
1answer
193 views

Is there any way to test if a Players inventory is not full in Minecraft (No Mods)

Is there any way to test if a player's inventory is not full (eg. atleast 1 empty slot anywhere in the inventory, not counting Armor Slots) with command blocks and whatnot? Update 2: I found /testfor ...
0
votes
2answers
450 views

Testfor block with custom name

Ok so what I'm doing is making "magic blocks" Whereas if you are standing on a specific block it gives you a potion effect like speed, instant health, strength, etc. The only problem is while trying ...
3
votes
1answer
194 views

Determine Minecraft item type from entity or inventory?

I have a dropper which can contain, of course, any items. Assuming I can already target this dropper in a command's target selector, how can I determine what item is in the first slot of its inventory ...
3
votes
1answer
241 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 ...
18
votes
2answers
582 views

How to make 20 minutes (1 day) delay?

I am getting tired of manually managing my chicken farm, so I have invented this automated design: The step from eggs to chicken is easy, and it's even simple to make it happen in batches - every ...
2
votes
1answer
86 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 ...
0
votes
2answers
270 views

Teleport a player to face an entity?

If I have an entity, is it possible to teleport that player to face the entity without teleporting the player to the entity (Just changing his rotation)? How could I accomplish this?
5
votes
1answer
104 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 ...
1
vote
1answer
115 views

How do I make a mob riding another mob and make the rider invisible?

I want to have an invisible blaze riding a bat so it looks like a bat is shooting fireballs. If I do /summon blaze ~ ~5 ~ {ActiveEffects:[{Id:14,Amplifier:1,Duration:999999,{Riding:{id:"Bat"}}}]}, it ...
0
votes
1answer
152 views

Can I make a redstone clock that detects certain words? [duplicate]

I made a vanilla minecraft server and I made a redstone clock attached to a command block with /testfor that detects players. Can I change the /testfor from detecting players to detecting certain ...
0
votes
2answers
3k views

How to place redstone using Command Blocks

I used this to place redstone: /setblock -624.5 244 -1692.5 redstone 0 replace It gives an error saying that there is no such thing as minecraft:redstone. I tried many different things and nothing ...
0
votes
1answer
131 views

How do I make the comparator work and then stop?

I made a redstone clock that involves a command block with /testfor and a comparator attached to it. Whenever the /testfor works, the comparator turns on, but completely.(meaning it does not turn off ...
4
votes
3answers
950 views

How do I make a rain detector on Minecraft?

I am making a server and it rains a lot. Rain lags up my computer so every time this happens, I have to type in /toggledownfall. Is there a way to make a simple redstone creation that detects rain, ...
1
vote
2answers
170 views

How would I make a commandblock do setblock at a certain player

I was using setblock a lot and playing around with it, until I came with the idea, what if I could use setblock to make a game like Runner, from Mineplex, to make the blocks disappear when they run ...
0
votes
1answer
66 views

Coordinate of player standing on a certain block

Im new to mc commands and im building a parkour where if a player falls on a red wool that particular player needs to be teleported to the start of that level. the problem is that many players can be ...
0
votes
2answers
189 views

Minecraft: using scoreboards as varibles

In my minecraft map, I have a scoreboard, mainvars, that I made by running /scoreboard objectives add mainvars dummy, that has 1 player called var I made by running /scoreboard add players var ...
1
vote
5answers
2k views

How can I make an automatic cobblestone breaker?

Is there a way to break blocks with a redstone/piston system and then pick them up with a hopper in vanilla Minecraft. I want to make an automatic cobblestone breaker. I know that I can break sand, I ...
1
vote
2answers
694 views

How to put a redstone block in clock mode?

I saw this video by SethBling. (The video is caught up to the moment of my question) He says "Make sure these are in clock mode" what does he mean by clock mode?
-3
votes
1answer
335 views

How do I make a day/night automatic double door?

How do I make a double door which opens and closes depending on whether it's day or night?
0
votes
2answers
116 views

How do you activate different redstone currents each time?

For a map I'm making, there's a "Palm Reader", represented by a villager. When you throw a diamond into a nearby hopper, it gives you a fortune. Is there a way to activate different /say command ...
0
votes
2answers
231 views

how do I trigger a /setblock command without a /testfor?

In my map, the player goes to sleep, then wakes up and finds the windows are changed from regular panes to red ones stained with blood. But if I do /testfor, it will trigger whenever the player passes ...