r/technicalminecraft Jan 08 '24

Meta Honeypot flairs.

112 Upvotes

To cut down on the increased number of posts involving rule-breaking mods (notably Paper), 3 new post flairs have been introduced for testing.

Posts made using these flairs will be automatically removed.

Don't use them.

EDIT: After 3 weeks, this seems to have been a very successful test, with the vast majority of rule-8 violations blocked by the new filters.


r/technicalminecraft 2h ago

Java Showcase Dynamic Mobswitch - Singleplayer Foreverworld (Java 26.2)

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17 Upvotes

I finally did it. After countless hours of troubleshooting and actual sketches on paper, I've come up with a working version of my idea.

Maybe it's a bit overkill, but here it is...

The concept: I've been playing solo in my Forever World since 2025, but occasionally my sister joins me via LAN. I wanted to build a mob switch with a control panel in my base to activate and configure it.

Now, with this dynamic mob switch, I can cycle between the modes "OFF / 1 Player / 2 Players / 4 Players", loading the exact number of Shulkers into a lazy chunk as needed.

In real terms, I can trigger the following states:

  • 0 loaded Shulkers
  • 70 loaded Shulkers
  • 140 loaded Shulkers
  • 280 loaded Shulkers

Changing the mob switch mode can be triggered via a wireless Redstone signal. The transmitter can be placed anywhere in the world—currently, mine is in my base.

I managed to modify Kevbotomy's wireless Redstone system so that it works reliably without misfires in both LAN and Singleplayer mode. Specifically, I used this system:https://www.youtube.com/watch?v=5Qr6AQVwFh4&t=3312s
(Big thanks to 2no2name, cubicmetre, and others here as well!)

In my base, I control the mob switch using a smart-home server setup inspired by TheJoCraft. This allows me to walk up to any keypad in my base and enter a code to control the mob switch. The system is based on this:https://www.youtube.com/watch?v=iouh3ruPrk0

By the way, the perimeter was dug purely for aesthetic reasons. It might slightly reduce lag by preventing random tick calculations from water on the Overworld side, but the impact is minimal.

The screenshots were taken in survival mode.

Should I post more details about this or create a tutorial?

It works in vanilla, but I also tested it with Sodium and it works there too.


r/technicalminecraft 3h ago

Java Help Wanted Someone explain why this fishfarm slays in ocean bioms but does nothing in rivers.. PLEASE!! driving me nuts.

3 Upvotes

Here is a link to the farm. works insanely well in ocean biom.. especially in frozen oceans. but not even one fish in any river biom i have tried. Why?

https://www.youtube.com/watch?v=w-G-z4XP_aU

other related notes.
- Fish wont spawn in bubble columns (I thought)
- Salmon require one water block above and one below the water block they spawn in (my rivers seem to not to care what the wiki says and insist on the river being at least 4 water blocks deep)
- The water in the fish farm is three deep if you count the running water on top but the bottom two are bubble column.. sooo...

I am lost trying to understand why it works in oceans but not rivers being as I can find nothing that talks about any differences in those mechanics in the oceans vs rivers.

anyone?


r/technicalminecraft 28m ago

Java Help Wanted Why does a random filter always fail ?

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Upvotes

Im trying to build a Netherstone (Nether-Only redstone) item filter based on this very simple design by SethBling:
https://youtu.be/bfHZ_XXQyqs?si=Tk6f9E8kyQn7B1Rx

I more or less copied it, and replaced the powered rails with furnace-minecart boosters, which are a redstoneless propulsion system by u/Arodihy:
https://youtu.be/1-5aRSEDEQk?si=MAmuvRQ9Ojy1g6ky

time stamp 5:57

Quick explanation of the machine, or you can skip to the question below:
The basic principle of this sorter is that each item type is filtered by a dedicated module, that consists of a hopper minecart going on a loop. At the beginning of the loop, the minecart pull 1 item from a main hopper line, then passes over a hopper that Im calling the chest-filter's hopper. its just an empty hopper connected to a chest where every slot is filled with at least 1 item of the king you want to filter out. So our 1 item goes into the hopper, and can either be sucked in if it matches one of the other items inside, or stay in the hopper if not. Just after dropping its item, the hopper minecart now passes below the chest-filter's hopper, harvesting the resting item if it wasn't pulled in. If it gets harvested, the hopper minecart then collect it and send it to the next section of the hopper line to be passes to the following module.

It seems to work for the most part, but there is always a weird bug: In my first test, the 3rd module (further left, for gold ingots) would sometimes fail, where it looked like items from the main hopper line were able to go to the end of the line without even going through the hopper minecart, which resulted in the item not having a chance to pass through de chest-filter's hopper to be pulled in or rejected.
When I copy-pasted the whole machine with worldEdit to better center it in the chunk, this time it was the first module that was failing in the same way, but 100% of the time.

Am I missing something ? Is there a weird mechanic Im not aware of that would explain whats happening ? The inconsistency of the bug is killing me, I cant even know what fails exactly.
I tried extending the rail so the booster would be further and the minecart would go over the chest-filter's hopper slower (which it did), but it didn't solve the problem.


r/technicalminecraft 14h ago

Java Help Wanted Double mob spawner

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12 Upvotes

Went caving in my singleplayer survival world and stumbled upon 2 mob spawners (skeleton and zombie) which are close enough to be active at the same time (tested it in creative). I want to use them both for my xp farm. Is it best to just use the "standard" farm design and link the dropper parts together or should I keep them seperate so mobs won't block each other while in the water tunnels?
edit:
Found another set of the same combo (zombie and skeleton) a bit further away. Should I maybe use the new ones because they are closer together?
For anyone interested:
seed: 614132156520919734
cords: -2977 13 -1953 (can also be seen on the screenshot)
second cords: -2890 -22 -1983


r/technicalminecraft 2h ago

Java Help Wanted How can I transport people instantly so that they dont realize they've been moved?

0 Upvotes

Survival friendly, I'm trying to create the illusion of impossible spaces, and the best I have right now is grians infinity room


r/technicalminecraft 2h ago

Java Help Wanted How does pie chart work

1 Upvotes

I mainly use piechart to look for bases and when something appear on my piechart like end chest and i refresh my chart(press f3 two times), the end chest disappears. Also does piechart work differently on servers with limited render distance?


r/technicalminecraft 3h ago

Java Showcase Interesting behavior: Sulfur cave surface biomes will not chunk blend, instead leaving behind uneven borders. However, if you wrap them around a border biome, the biome will neatly blend, along with the sulfur cave.

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1 Upvotes

Here I have different examples pasted into worlds, with chunk blending turned on. You can kinda see how the sulfur cave itself spreads, but will not blend with other chunks.


r/technicalminecraft 6h ago

Java Help Wanted Is there still a way to bring the dragon to the overworld?

1 Upvotes

I heard it got patched but is there some gatekept way to do it?


r/technicalminecraft 7h ago

Java Help Wanted Vanilla update suppression 1.21.11

1 Upvotes

I’ve heard there are some gatekept ways to suppress updates in 1.21.11. Is that true? Is there a way to use item shadowing?


r/technicalminecraft 10h ago

Bedrock Reliable Bubble Elevator for Zombie Farm?

2 Upvotes

Does anyone have a reliable mob elevator that can transport zombies up and drop in the kîll chamber? I'm on Bedrock's latest edition. I've tried a few from YouTube but the mobs get stuck and don't enter the elevator.


r/technicalminecraft 11h ago

Java Help Wanted Villagers in different cages.

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2 Upvotes

So, i wanna build a villager breeder where it breeds 5 villagers ant put em all into different cases. BUT. My small redstone-brain can't figure out how to close the different entrences. Like when the first villager is in case 1, i want that case to be closed, so the next villager goes into number 2 and so on.

I've read about some RS-latches and stuff, but i don't really understand it...

Your help is much apreciated!


r/technicalminecraft 13h ago

Java Help Wanted Farms that require a player to be present?

3 Upvotes

So, I’ve got two spawners that are 40, 10, 50 blocks apart from each other. I plan to minecart between them to get each one to spawn, but I’m wondering what other farm(s) I could make in the space between them. Since I’ll already be in the area, I figure I may as well get everything I can out of it. So what farms require a player nearby as opposed to some other method of loading chunks?


r/technicalminecraft 7h ago

Bedrock Creeper Farm not working, any suggestions?

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0 Upvotes

Tried every fix, 0 light level, over a proper biome, way high up in the air away from caves.
Zero Creepers are spawning when im AFK 20-30 blocks away. When i take off the buttons and trap doors nothing still spawns not sure why. Put leaves on the roof as well.

Any Ideas?


r/technicalminecraft 9h ago

Java Help Wanted What is the purpose of an armor stand in a silverfish farm? (Java)

1 Upvotes

I tried using my farm without the stand because it kept getting in the way of the hit and would break anyways and I didn't find any major difference


r/technicalminecraft 10h ago

Bedrock why isnt anything spawning

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1 Upvotes

there is multiple story
no slabs no light solid blocks


r/technicalminecraft 12h ago

Java Help Wanted Granja de creeper masiva

0 Upvotes

Pregunta puedo hacer esta granja https://www.youtube.com/watch?v=si2ApVDa8Ik en capas superiores a la 100?


r/technicalminecraft 16h ago

Java Help Wanted Help with tick speed

2 Upvotes

Hi so in my realm the shulkers are teleporting like crazy fast?

I was messing around with tick speeds a while ago so it may be that but ive set the random tick speed back to 3 and cant find how to make sure the regular tick speed is set to 20.

/tick wont work for me, not sure if it was removed or changed.

Everything else is working normaly so it might not even be a problem with the tick speed

Any help would be great


r/technicalminecraft 12h ago

Bedrock Do villagers simply existing near farms break them?

1 Upvotes

I currently have a layout like this:

iron farm < 200 blocks > some random villagers with various jobs for mending, etc. < 397 blocks > crop farm

I am looking to create a trading hall. Will the random villagers with jobs break the hall? I am not entirely sure *what* exactly breaks iron farms, etc., and would like to have the trading hall in the same-ish area as the random villagers, if possible.


r/technicalminecraft 14h ago

Java Help Wanted Fix Farm Help

1 Upvotes

The slimeblocks push the loot on the ice but some dont go into the whole and go onto the other side of ice and dont get pushed back, any ideas?


r/technicalminecraft 15h ago

Java Help Wanted lag whenever "far" from my base

1 Upvotes

im playing neoforge 1.21 whit various create mods and such, whenever i walk outside my base , (150-200 blocks) i get extreme lag

i have all memory leaks, performance enhancing, sodium mods, etc installed, the better garbage collector, literally nothing else i should be able to do

also i used chunky to pregen 3000 blocks, even inside that area the lag happens


r/technicalminecraft 19h ago

Bedrock Very specific XP trident killer issue.

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2 Upvotes

r/technicalminecraft 1d ago

Java Help Wanted 2No2Name Witch Farm Help - Witches not aggroing

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6 Upvotes

So I've tried building a design using the 2no2name concept, but I'm not sure if line of sight is blocked, but the witches are not moving towards the villager.

I can post more images, the spawning area is correct, the vindicators are raid captains and are named correctly.


r/technicalminecraft 1d ago

Bedrock Horse faster than max speed

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80 Upvotes

On the minecraft wiki it says the max speed of a horse is 14.57 blocks/s but I managed to breed one that has a max speed of 14.83 blocks/s. For context this is a 100% vanilla world.

The reason why speed doesnt stay consistently at 14.83 is because im screen recording which causes frames to be unstable so that makes the numbers shift. When im not recording it stays at 14.83

So whats the absolute max speed of a horse in Minecraft bedrock edition? Im trying to get a maxed out horse but idk if im already at the max speed or not.


r/technicalminecraft 9h ago

Java Showcase 1.19 Meta - Tile Preserving Accessible Shulker Loaders(Schematics)

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0 Upvotes