They are particularly useful for the /weather and /time set commands, as they are only available in cheat mode otherwise. It is a very interesting solution as it is a refinement of the command block source type solution removing its main drawback; involving a command of this type (two-lined for readability):1. To update when a player clicks a button, just wire up the button to the command block. Name is the. A redstone comparator is a block that can produce an output signal from its front by reading chests, lecterns, beehives and similar blocks, or repeat a signal without. 2. You would do this by ordering your command blocks in execution order, if you want to find out what order they execute (create a dummy objective called debug) type. It doesn't seem clear why commands are even being used here when it's largely a redstone setup (just like how using redstone in a largely command heavy setup doesn't fit very well). Create command blocks. It always succeeds, creates no lag, and this output is invisible to all players (even creative players if you turn off output tracking for the block). If you want to set up multiple commands, use redstone wire to link them up. Be able to output a redstone signal via the death of the players cat. You can use testfor to test if the player is at the specified position, then use a comparator to trigger another command. This. Op · 1y. In this case posY is the. Use this wireless redstone setup (Our door is at -90 102 159): Command block left: /setblock -89 102 159 air. Redstone only outputs if the command block succeeded, aka, nbt= {SuccessCount:1} or more depending on what it returned. If you specify a condition and that condition is true then the command block can output a redstone signal. Only way to do this. Now run this command by pulling the lever and you should see the redstone block drop on top of your command block. On success, produces a success count equal to the number of targets matching player, which can be measured by a redstone comparator facing away from the command. These blocks are typically available across multiplayer servers and custom servers, as they are only available in Minecraft worlds that have cheats enabled. r is the max radius,. and it will only activate the command block when a diamond is put into the hopper, and all the items put in will be stored in chests. Then mark all players within range on a scoreboard, and finally run a command on all marked players. This and the chain command blocks should contain the actual commands you want to activate when the condition is met. Afterwards, this. Note: I'm currently away from a device that can run bedrock edition so I can't test this. therefore, if the last time it ran it was successful, it will power the comparator. Tests whether a certain block is in a specific location. Timing: It takes 1 Redstone Tick (one-tenth of a second) for a signal to move through a Comparator. 23K views 10 years ago Command Block Creations. Or you could use /data to modify its NBT data. The other comment has the right solution, although it’ll only work for the nearest player. In the 3x3 crafting menu, the player must place the three stones in the three bottom slots, place the quartz in the center, and place the three torches are placed on the left, right, and top slots. - Press button. You can easily use more command blocks for more doors. Now run this command by pulling the lever and you should see the redstone block drop on top of your command block. From there, place your redstone or any redstone contraption that needs the input. 01 Minecraft Bedrock server, it is a normal MCPE server. In it type the following command: execute if entity @a. converting a redstone signal is like putting a torch an then when the repeating commandblock does something it will turn off the redstone torch but if the repeating commandblock doesn't do something the redstone torch will stay on. Command block right: /setblock -89 102 159 redstone_torch. You could put this command block on an infinite redstone loop to make it run. Is there an easy way to test and see if the iron block is being powered via a command block? Thanks in advance! Shadesz During my testing on a command block machine; I used a repeating command block that has /kill @e [name=select-paint] in it and a Chain, conditional, needs redstone, command block that has /setblock ~ ~3 ~ redstone_block in it with a comparator as an output to another node of command blocks. ; Output a short pulse from the. Enable Command Blocks. I want to be able to say a simple keyword in chat, such as "Toggle" or "Machine, toggle [thing]", and have a command block output a redstone signal of some sort. Set the Block Type to Repeat. Be able to output a redstone signal when the player enters a perimeter of certain blocks, ei entering a city. Sadly not. . first computer needs to take a rendstone signal input and output the same strength signal until it receives a new signal, then it will output that signal, so on soforth. View User Profile. INPUT OUTPUT 0 1. 15. Also, command blocks have an arrow on them, a command block set to "chain" mode (so it turns green) will only run its command if the command block pointing to it has completed its command, so if you can run your commands in order you only have to test the output of the last command block. 1 less than the limit, no. /tellraw @a [" "]The redstone comparator is a block which can maipulate signal strength outputs from other redstone components, certain blocks, and item frames. Enter the command block command. An additional command block can then be activated by the torch to set the cooldown of the other hopper to change the pulse length. 2 Minimal Dual-Piston Clock (B) 10. They will execute a command when they receive a redstone signal. I warn you that this system has two flaws, one which has an unorthodox solution. 7 snapshots go /setblock (coordinates) (then block ID) for wieless redstone you can use a redstone block its a really cool feature. It requires a Comparator to do so, except a Comparator can not send redstone signals upwards or to the side, only forward. Place down a command block, and say /time set midnight. 3s close 0. Signals: There are three input sources and one output source. The next (repeating, indigo) command block is set to Conditional, which means that it will only activate, and thus only activate the chain command blocks that it's pointing into, when the condition in the block behind it is met. The most basic power source, redstone torches grant power with a signal strength of 15 to any adjacent redstone dust, or to the block above them, from which a redstone dust signal can then be taken. You can have a redstone signal if you put a comparator sticking out from the command block This will require a repeating command block pointing into a redstone comparator for a redstone output. stats block <x> <y> <z> set <stat> <selector> <objective> <x> <y> <z> are the coordinates of the block running the command you want to get the result data for. Hello all. Unlike most other conductive blocks it also redirects adjacent redstone dust towards it. What you want is the stats command, with the SuccessCount stat. Impulse command. Right click on the mouse to place the command block. I'd like the player to cross over a pressure plate which fires off a command block that does some running narration. It gets powered, makes a signal, powers the setblock command block, that command blocks sets a redstone block next to the redstone dust, and viola. 80 votes, 17 comments. So the next two might be: /setblock 0 11 0 command_block ["facing_direction":1] /setblock 0 12 0 command_block ["facing_direction":1] To do the same in Java 1. Along the side/bottom left of the picture is the actual command. It always succeeds, creates no lag, and this output is invisible to all players (even creative players. You get the inverted daylight sensor by right-clicking on a regular one. Allright, now to an alternative solution to your problem: 1. Give yourself redstone dust and a redstone torch. power the pistons with a pulse at the same time and once the pulse ends, the pistons retract and there is a 1/2 chance that either piston gets the block. getInput, turn a redstone output on or off on a given side of a computer using rs. CryptoComponent: Redstone. As for the other two, I will try. Attachments. Discord. This happens because the comparator outputs if the command block has ever successfully executed the command. Step 3: Place the furnace on top of the hopper. I'm trying to have it output a redstone signal to open a piston door, when a player gets within range. Will output a signal, even if the execute command has no 'run' part at the end. It’s also possible to separately control the output of each side (only output on one side or different outputs on each side), by using the. Redstone output from command blocks. The repeating command block will perform server commands over and over again when attached to a redstone circuit. Columns A,B, I, J are the blocks used to reset the output to low. Not exactly a redstone logic question, but this seemed like the best place for this. Redstone components include power components (such as redstone torches, buttons, and. That was actually the first thing I tried and it only ever outputs a signal. If you run this in a command block, you can take a redstone output from it using a comparator. use ~ to make them relative coords. What I did do was get a diamond block and make it so if you use /setCommand [Command] it would bind it to the diamond block. IronAnvil's answer is spot on when it comes to command block contraptions. You can. However, when I go further than 32 blocks from the command block it stops outputting a signal. Build the main part of the map or large things as needed with SPC/WorldEdit. Though it will link to any block, not every block can act as a display or source. setblock x y z redstone_block Replace x,y, and z with whatever the coordinates are next to your redstone dust. The ability activates through commandblock 1, comparator detecs that it gave an output through the iron block, commandblock 2 and 3 replace the iron block and redstone with air blocks, the other. This block cannot be crafted, and only server. There weren't any tutorials for this, but the solution I came up with on my own worked fantastically. Make sure that length of redstone is 15 long. Below is the code I currently have but I'm having problems with it, the blocks don't update until after its run, meaning that only the very last if statement will ever work. level 2. They can also be used to save and load structures, alongside structure void blocks. SuccessCount: Represents the strength of the analog signal output by redstone comparators attached to this command block. I was trying a simple set-up with two command blocks and a comparator in the middle, but I'm a beginner and am obviously missing the correct syntax (especially to test for a particular. At the top of the page, click on Server Settings. The command in the second command block is up to you to. Leave a space above it for a redstone block. This thread is archived. Place a block: setblock ~ ~ ~ minecraft:command_block {SuccessCount:15} Update a block: data merge block ~ ~ ~ {SuccessCount:15} Set the output strength to the marker entity's outputStrength score (or whatever):The command block can power a redstone comparator facing away from it, with the signal strength reflecting the success count of the command. 2. All the following commands will be in command blocks that are chained after the repeating command block. /setblock X Y Z air 1 replace. Since furnaces can hold fuel without a. This includes Impulse, Chain, and Repeat command blocks. Piston clock A piston clock produces a loop of pulses by passing a block back and forth (or around, with many pistons) and drawing off a redstone pulse when the block is in a. This command basically asks the game whether there is atleast one. so, some of us want these, and i have never seen one anywhere so i made some, some use redstone blocks as a bit of a io solution and others are straight up command blocks, ill label the redstone ones as (rs) all of these designs are made with repeating and chain command blocks and have to be connected. you could just put the pressure plate immediately above the command block. Place one handful of redstone dust dust on the ground. 2 - The Pretty Scary Update. The command "/give" puts items into a players inventory and has two arguments: the player and the item to give. Tier two provides interoperation with other mods' redstone systems (bundled, wireless). Hi, i'm building this undergrounds city, and I cant get the command block to operate how I would like it. testforblock <position: x y z> <tileName: Block> [blockStates: block states] position: x y z : CommandPosition Specifies the coordinates of the block to test. 2. just entered the range. 9 Redstone => 1 Block of Redstone 1 Block of Redstone => 9 Redstone A Block of Redstone is used as a power source that can power adjacent Redstone devices and ignite TNT. 14 it. 9. message > tag > remove_tag On Minecraft for Windows 10, choose the / or T buttons. 4 Compact Sticky Piston Clock (D). Redstone is not a valid block ID. Otherwise, if the command block was unsuccessful or if there was no command block behind it, the value is set to 0. /give @p minecraft:command_block. ok, so first off the commands won't work currently because although you have a command block chain you have an 'Incomplete' on as you have all the command blocks as chain command blocks so you have the middle of the chain but no start, to fix that try replacing the first chain command block (The one furthest back) with a repeating. . Report Save. There’s a single redstone torch on that front side, and there are two torches on the back side. Your output should no longer be visible. Have a chain command block place a repeater that connects two redstone lines. Then if every command executed successfully, you should see the text: "Command executed successfully" 6 times. repeating > chain > chain. You can change it to 2 commandlines which each add another command. It doesnt seem to be working for whatever reason AND when I look at the command block that is using the command. There. I also tried breaking regular and redstone torches next to the command block. Then correct the coordinates based on where the block now is, and increment the Y coordinate. Execute redstone output when player goes to specific coordinates with radius (distance) HELP . However if you insist, the way to do this is to have a command block run scoreboard players get and attach a comparator to it. Grateful!. There is no redstone needed, place the command blocks as I did in the included picture. It seems that most blocks which use Redstone functionality override the getWeakPower() method to control the Redstone output of the block by returning a specific value from 0 to 15 from the method. A target can be found in ancient cities. The texture of the detecting. First, place a layer of downwards-pointing "impulse,unconditional,needs redstone" command blocks filled with the command: /setblock ~ ~2 ~ air. Impulse Command Blocks (orange) are the regular old command block. Using a second repeating command block, you can use the following command to detect when the score reaches 1200: /scoreboard players test count dummy_objective 1200 In conditional chain command blocks following the above command, you will need to set the score back to 0, then execute the commands that you want: /scoreboard players set. The answer is simply infinity. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. Ok so here's what I did (just did all over again): - Put one chest down. However you make your loop remember the comparator output is intended to kill the loop. Put the output in. (But I can see from the comments that you've already found it). And 1 day I realized that the effect command don’t work in console and manually adding it in Minecraft chat, also sometimes command blocks don't give you the effect when it should be. Idea #1 Two command block commands: /Redstone input /Redstone output after the command you could do a number for frequency It would be a command…Minecraft redstone proximity detectors are hard to make, inefficient and unreliable. I've tried building a chunk loader, I've tried changing the world spawn to the same chunk as the command block, I've even tried using /forceload on the chunk but nothing worked. Each cmd block just runs 1 'say' command. I was hoping just a comparator would work, but I haven't quite figured out how they work with command blocks. A target is a block that produces a temporary redstone signal when hit by a projectile. ) For specifics, this is my Deathmatch system in a vanilla Survival Games map. you could just put the pressure plate immediately above the command block. I'm working on an adventure mode map, and running into a snag. If this is wanted for a adventure map or something where the player may get far away, it may be desirable to build the randomizer in spawn chunks. To combine block states and NBT values, you put the block states ( [] s) before the NBT values ( {} s): setblock ~ ~ ~ minecraft:command_block [conditional=true] {auto:1b} This is also the command you'll need to make a conditional, always active command block! If you are using a chain command block, the auto tag is set to 1b by default, so you. This means that the Output signal will register one-tenth of a second slower than the input signals. The front is the output, while the back and the two sides are inputs. The answer is. Have a red stone comparater to convert the value of items to redstone output. Output [] When activated, a command block can produce multiple types of output: Redstone Comparator A command block can power a redstone comparator facing away from it (possibly separated by a block) with a signal strength specific to the last executed command (for example, the number of players affected by the command). Now, check that what you've made looks nearly exactly like the picture above. Thank you, I set the command to replace an air block with air since all I needed was the redstone signal. Mining signal. Place 15 Redstone. Is there an easy way to test and see if the iron block is being powered via a command block? Thanks in advance! ShadeszDuring my testing on a command block machine; I used a repeating command block that has /kill @e [name=select-paint] in it and a Chain, conditional, needs redstone, command block that has /setblock ~ ~3 ~ redstone_block in it with a comparator as an output to another node of command blocks. 15. In order for this setting to take effect,. Stack Exchange network consists of 183 Q&A communities including Stack Overflow,. (IE, "say You glance down the tunnel ahead, and feel uncertain. If you need just the redstone signal you can also just remove the part with 'run <command>'. . Make sure the redstone_block one is on top and the lapis_block on the bottom, now simply put a redstone_block in between the two command blocks. I'm working on an adventure mode map, and running into a snag. You can count how many items (in entity form) there are like this: /execute if entity @e[type=item,nbt={Item:{id:"minecraft:diamond"}},distance=. ). In other words, when it comes to comparators and conditional command blocks, we have equivalents to the old commands:I powered the command block with a button but when the button wasn't pressed anymore the command block had still a redstone output. For example, if you connect this to a door, and "testfor @p [team=Insiders. Players can sneak to avoid making vibrations and wool can be used to occlude and block them. Attachments. Redstone mechanisms are blocks that affect the environment (with light, sound, movement, etc. The redstone signal coming out of a power source starts at 15 and decreases by 1 for each block the line of redstone dust is extended. Enter this command right here: /time set night . However, when I go further than 32 blocks from the command block it stops outputting a signal. It may have changed slightly, but I used to give empty command blocks a success count of 15 with the blockdata (now just data) command, and with a comparator attached and redstone looping back around to update the command block, which gave. Add a comment. pressure plates output redstone signals just like any other redstone power sources. so, if it receives say a signal of 3 it will output 3 until it gets another input, then it will output that signal. 4. Leave a space above it for a redstone block. Web catches fire from lava. getOutput. The command block will perform server commands when attached to a redstone circuit. Minecraft: home set command Minecraft command tutorial #08: /defaultgamemode 45lovers: minecraft command. Command blocks are kinda redstony. Signals: There are three input sources and one output source. r/redstone • I found this weird bug where pistons that are placed under a powered block don't get updated when the block is de-powered if the redstone dust on top of the block has a signal strength that is an even number. However, if you decide to edit those command blocks, you will need to rewrite the command to have the newer syntax. 5. You could have one output with the true command block, then invert the output it for the false one. /give @p minecraft:command_block. Improve this answer. You can consider creating a command chain. Hello, I'm new to this subreddit and fairly new to command blocks. You can power another command block with the signal, but you should look into using conditional chain command blocks instead for performance among other reasons. 11. Block G1 setblock pos2 redstone_block. 5 64 1291. How would I do that? I'm on Java. 9 snapshots of Minecraft for PC. Set a command block (let's call it CB2) that detects if a player is in the zone (same as the one you had before, but with +1 to every digit): /execute @a[dx=xn+1, dy=yn+1, dz=zn+1] ~~~ scoreboard player set. Change distance and the position to your preferences. The video linked in a previous answer does do so more generally using command blocks. Instead the temple command block sets the players gamemode to adventure. Block G3 setblock pos1 redstone_block. The /testfor command is used to detect entities which you filter based on arguments in player selector or/and NBT Tags. When I have a specific item held in my offhand it emits a redstone output. Command block really aren't meant to interface with plugins. Minecraft players will need three Redstone torches, three stone, and one nether quartz to make a comparator. It will light all the redstone lamps within the specified area. Command block reads a relative coord which targets an iron block. 6. Then I would suggest ignoring the command itself, and just setting the command block's SuccessCount directly. When the "testfor" command was replaced in favor of "execute" we lost the option to send a redstone signal with a strength based on the number of entities/blocks detected. A hopper clock produces timed pulses by moving items back and forth between 2 hoppers feeding into each other and taking a redstone output with comparators. You'd need a redstone torch to make it into an output, but with this you could. The sculk sensor is a block in the sculk family. However, I tried using /give @a minecraft:redstoneAn alternative could be to have commandblocks come out of that one command that set the impulse of the three chains to auto:1b. Redstone signals can be transmitted from one place to another with redstone wire – a line of redstone dust. The help command simply generates output inside the command block. #6. Companion Map. Once you’ve done this, click on the lever to toggle it back on. the if and unless statements from the /execute command are the new /testfor. I want one command block to remove just ONE rotten flesh and then have another reward the player with 8XP. stats block <x> <y> <z> set <stat> <selector> <objective> <x> <y> <z> are the coordinates of the block running the command you want to get the result data for. TahoeBennie •. Go to the “server. When using /forceload add 0 0 10 30 chunks 0,0 to 0,1 are actually loaded (one chunk equals 16×16 blocks on x/z axis). Timing: It takes 1 Redstone Tick (one-tenth of a second) for a signal to move through a Comparator. Depending on your command, you. (See point 3. To begin, click on the “ Singleplayer ” option on the home screen. Way back when command blocks were released, I could put a comparator after a command block, and it would output a. is make them all need redstone and place redstone blocks under them. 1 in creative mode and I would like to make a chest open visually, using redstone or commands, without touching it. (this is optional, but recommended) Connect the output of the rising edge detector to a T-Flip-Flop. /tp @p 357 70 2470) The chest will contain all the diamonds after they have activated the command block. @MBraedley Chest's animation is not stored in NBT, it's like the direction an enchantment table's book is facing. A trapped chest will also strongly power a solid/opaque block below it (the same way a redstone torch can power a block above the torch), allowing it to activate output/mechanism components two blocks beneath it or diagonally beneath it, or redstone dust beneath the block (say, on top of a command block), etc. 3. Just a quick note: a Count of -1 won't make the command block infinitely dispense; the item is only removed completely when the Count ticks to 0, but will still decrease by 1 when negative. Must be a player name or a target selector. setOutput, and check to see if a redstone output is on or off on a given side of a computer using rs. dtschida •. There are three similar command block lines with the. How to resolve 'command block not working' Command blocks and functions can be used, among many other things, to change the difficulty, change the state of the weather, or give a player predesignated items. Place this command in a conditional chain command block running off of the previous conditional chain command blocks. Set block and reset timer. Block G3 setblock pos1 redstone_block. If [Air Block] is present on specified stand, a Pumpkin/Flag will replace it 2. This replaces a clock and is also faster. Solution with redstone dustView community ranking In the Top 20% of largest communities on Reddit Command Block Output Changer. Set up a always running, unconditional and. Would anyone be able to explain to me why the following code in a command block (repeat, unconditional, always active) will activate a redstone comparator: /execute as @p [nbt= {SelectedItem: {tag: {display: {Name:" {"text":"save"}"}}}}] run say hi. 5 and 1. 15? The easiest way to accomplish this is to have a command block summon an Item entity with an age of minus 15 minutes on top of a pressure plate on a block on which a redstone torch is attached to. If you want to set up multiple commands, use redstone wire to link them up. The player is able to place redstone dust on top of the iron block and turn the dust on and off at will. properties” file in your server’s config files. By using the blockdata command, you. Connect the output of the comparator to a rising edge detector. I tried using a sticky piston to push a redstone block next to the command block to both activate it and generate a block update on retraction. while the following does not activate the. Circuits can act in response to player or entity/mob activation, continuously on a loop, or in response to non-player activity (mob movement, item drops, plant growth, etc). 1. You can have the command block say /testforblock <x> <y> <z> <block> Heres an example: /testforblock ~ ~-1 ~ diamond_ore. Naturally, these new command block would be configured to spawn more command blocks ad infinitum. It’s also possible to separately control the output of each side (only output on one side or different outputs on each side), by using the. 5. 13?I set up several command blocks encased in bedrock with the following command (example coordinates). 1. 5] ^ this command will display the number of items in chat. Step 19: Output. any way to do this without a redstone torch ? rob5300 In version 1. ) The obvious answer is plate -- redstone wire -- command block : say. By adding a torch to the side of the command block and connecting it with redstone to the comparator's side input, you will reset the comparator after each test. To place a redstone torch, use the Place Block control while aiming at the surface to which the redstone torch should be attached. 0. The / you type before the whole command is. /gamemode @p 0. Please consider visiting this post for info on how you can create a command chain. It is somewhat confirmed by the contrived command below: [/p] [p]execute as @e[type=villager,distance=. For instance, a command to detect nearby players. Block update detectors cannot detect comparator updates, but CUDs can detect block updates. 3 in the section about Dispenser source). Improve this answer. For example, if you connect this to a door, and "testfor @p [team=Insiders. 0. Open up the command block interface. Web To Give A Random Player A Sharpness X Diamond Sword: Web summon a redstone block beside the command block: Web used to trigger an event on an entity. In this case as @p will only find a max of 1 player, the redstone dust will only ever have a power level of 0 or 1, so you may need a repeater. Block C3 setblock pos2 redstone_block. This episode cov. Options. It says "Unknown Command. Redstone output from command blocks. Redstone wire can transmit a signal only 15 blocks – after that it needs a repeater to boost the signal back up to full strength. Console commands can be ran from the chat window by. Run this new redstone output into command blocks THAT ARE WITHIN RANGE OF THE ENTIRE ARENA. In the Top 1% of largest communities on Reddit. A block of redstone is a mineral block equivalent to nine redstone dust. It can also be locked into a power state by its side being directly powered by a repeater or a comparator. (Use F3 to check direction, look at pointing-at co-ords) In the center of the image is my testing harness. The data command resets the last command's success count, so if you run it at tick the command block should only give redstone pulse for one tick. It would be easier to run a clear command on a fill clock which clears "0" of the named item and use a comparator from. You can put comparator behind command block in which is. I'm tryging to make a command block output a redstone signal at a specific time of day. Follow. To place a block of redstone, use the Place Block control. It detects vibrations caused by actions and events in a radius around it and emits a redstone signal, and, if it was triggered by a player, also activates nearby sculk shriekers. Step 4: Place one hopper on the top and 1 hopper on the side (left, right, front. . With that said, follow these steps to obtain a command block in Minecraft Java on Windows, macOS, and Linux. The death will most likely be done either by bow or by splash potion. 4. Torches will also activate any redstone components above or beside them, such as pistons or lamps. Thank you, I set the command to replace an air block with air since all I needed was the redstone signal. Is there a way to alter the command block to say that if game mode is set to creative it will change to survival. Please test before taking my word for it. Click Save after you've changed this setting to Enabled. This redstone block is critical because it is used to activate the first command block. 1 Minimal Piston Clock (A) 10. This means that the previous output will be stored and displayed in the command block. 99 52. Redstone Output From Command Blocks! (13w03a) emeraldfyr3. any way to do this without a redstone torch ?rob5300 In version 1. It seems that most blocks which use Redstone functionality override the getWeakPower() method to control the Redstone output of the block by returning a specific value from 0 to 15 from the method. - Write in command block "execute if data block xyz Items [ {id:"minecraft:book"}] run time set night". For example, if both inputs in an AND gate are in. I've seen how a command block using /testfor can output different signal strengths to redstone contraptions. I'm still stuck on the most basic command trying to make it work. I tried having it activated via "testfor @p[r=2]" but the command block doesn't output a redstone signal. /scoreboard players test @a Deaths 5 If you need to create a redstone signal you can /setblock x y z redstone_block from the next command block in the chain. Blocks of redstone are always active and cannot be turned off. It looks like the command block impulses redstone signal based on the last commands success. 2 Answers. I'm sure I can build this much more efficiently, but for now this is what I've come up with. Repeating Command block: Unconditional, Always Active, 0 Tick, testfor @a, point this block into the comparator. kinda like automatic doors at. Stack Exchange Network. For instance, a command to detect nearby players. As mentioned in the comments, and in this answer, that's probably not. 2 pistons facing each other with 3 blocks in between them, and a redstone block in the middle of the open space. That means the tag isn't added to the player because the command block is either to far away (increase distance) or it's not being powered right. I've swapped it out for a comparator but that just activates the block immediately and never works again. NOTE: On servers this broadcasts a message to the entire server . The easiest way would probably be to reverse the order of the two commandblocks and just play the sound at the target location instead.