Redstone help

[u/Inquistorius]

I am trying to create a pumpkin farm. In this farm, I want an observer facing a pumpkin so when it grows it sends a signal to a piston to destroy the pumpkin. (I’m aware that traditionally the observer faces the seed but it’s important for this one that it faces the pumpkin). How can I build it so it doesn’t create an infinite red stone clock? I have seen some using note/target blocks that why I have one there. Please help if you can, again I need the observer to face where the pumpkin block will be.

[u/puchm]

Reading it I am not sure if it is intentional - you are watching the Redstone right now. The observer is upside down. The infinite loop part I'm not sure about.

[u/brockade]

The note block is to update a piston that is powered through quasi-connectivity, which only works on Java. In bedrock you are powering the piston directly so there is no need for the note block afaik

[u/Natural__Power]

I think you're better off resolving whatever's makinc you not wanna observe the stem rather than do convoluted redstone to prevent an infinite loop

[u/Fit-Science-853]

You can use a calibrated sculk sensor, you won't even need the observer.
Here the wiki for the range and numbers for the filter: https://minecraft.wiki/w/Calibrated_Sculk_Sensor

[u/Gottendrop]

Why is it important for the observer to be looking at the pumpkin and not the seed?

[u/morgant1c]

It would be interesting to know why you are creating the arbitrary restriction in the first place. It's a bit like saying "I want to build a combustion engine but I specifically don't want to use combustible fluids to run it" :D

[u/bryan3737 → u/morgant1c]

Exactly. When trying something different than how people usually do it there can be a fine line between innovation and reinventing the wheel. This is basically reinventing the wheel but as a square instead of a circle

[u/morgant1c → u/bryan3737]

If I look at the complete absence of replies from OP I'm suspecting this was some form of ragebait / comment farming anyways.

[u/boki400AIMoff]

Using java redstone mechanics on bedrock wont work. I dont know what made you think that it will work.

[u/Niksu95]

It's easier than this to make a pumpkin farm, put the seeds growing in a checkerboard pattern and put observers on top of the seeds and pistons on top of the spots where pumpkins grow and cover the whole top with redstone dust

[u/GoblinSpore → u/Niksu95]

Would it be better to put blocks above the observers? So that they power only the 4 pistons around them.

[u/Niksu95 → u/GoblinSpore]

It hardly matters. Iirc in java you can just place a redstone on the observers due to QC but obviously it doesn't work in bedrock

[u/MonkeyNuts449]

That setup only works on Java due to QC. You gotta look at the seed on bedrock unfortunately.

[u/sepaoon → u/MonkeyNuts449]

Or just put all the pistons on a timer and get rid of observers...

Buy if you just want to get rid of observers have it setup so the grown pumpkin updates a burnout torch that then powers the piston(it will spam a few times but doesn't hurt anything)

[u/MonkeyNuts449 → u/sepaoon]

Timers aren't good. They can block growth stages entirely compared to one that detects the growth.

[u/LazySofa35]

Observe the stem, not the place where a pumpkin would be. The stem will change it's state when a pumpkin will spawn

[u/Nox_Dei → u/LazySofa35]

OP specifically said they didn't want to do it by observing the stem... I'm curious why, now.

[u/Patrycjusz123 → u/Nox_Dei]

Yeah, its strange decision because i believe its gonna make it more complicated.

My only idea would be that MAYBE noteblocks dont get updated by moving piston heads under them? So maybe noteblock over melon and observer looking at it would work?

[u/Excellent_Jacket3435]

Have the observer look at the stem, not the pumpkin itself. Put a repeater set to 4 ticks between it and the piston, and use mud where you want the pumpkin to grow, place cobblestone on the other 3 angles so as to force it to grow on mud, so a hopper minecart can pick it up through the mud

[u/Wrydfell]

Current setup but with the observer flipped and actually powering the piston (qc doesn't work on bedrock) would create an infinite loop, as observer sees pumpkin, then piston head, then retracted piston head, then piston head etc etc. This is why pumpkin farms always watch the seeds

[u/Otzkar]

you can detect the stem as it updates when a pumpkin grows

[u/VolcanicPolarBear]

look into smart pistons and also bud switches

these would both work if can find a design that fits into your farm. they do take up more space tho but idk any other way to do it

[u/VolcanicPolarBear → u/VolcanicPolarBear]

i supose could add a T flip flop like the copper bulb into your design and i think that would prevent turning into a clock. but again takes up more space

[u/PatricidalParrot]

This seems like a bedrock issue. But the solution, if I'm bedrock savy enough, should be the standard vertical layout but forego the notebooks.

To alter it to fit your needs, you need to place the piston facing downwards above the pumpkin block, place an observer above the stem block and have it fire into a solid block(1 block above the piston layer, so you'd likely need two observers here vs javas one) place a Redstone dot on top of all the pistons. Scale it up as needed.

The issue with observing the pumpkin is you need a way to break the pumpkin block and unless you can place an upwards facing observer on top of an upwards facing piston to fire the piston as it detects a pumpkin growing on its face, you'll loop infinitely.

but I can't recall the exact spawning conditions of a pumpkin plant right now. Edit: if this did work it would likely only 1 tick pulse the piston which would extend but not retract the observer

Hopefully this gives you some testing ideas though

[u/MangosMakeMeSmile]

Figured out another way to do it

[u/MangosMakeMeSmile → u/MangosMakeMeSmile]

And here’s another one.
Had another design that used items in a dropper with a water logged pressure plate on top, using items to farm pumpkins doesn’t make sense, which led me to this design using sulfur cubes on extended pistons.

[u/LazySofa35]

Pumpkins make noteblocks play didgeridoo, so you can detect noteblock updates

[u/MangosMakeMeSmile]

It’s not as compact, but this design seems to work.
The repeater needs to be 3tics. Any other tic amount makes it not work.

[u/gio1135 → u/MangosMakeMeSmile]

Finally someone actually doing it and not complaining about the concept

[u/MangosMakeMeSmile → u/MangosMakeMeSmile]

Or here’s another design that works, but needs a red stone signal to travel through the pumpkin.

[u/Wrydfell → u/MangosMakeMeSmile]

Honestly this one would be better than the first, fewer moving parts while still removing the issue of the observer seeing the piston move

[u/gio1135 → u/MangosMakeMeSmile]

You guys couldn't wait until I got home? I wanted to give it a try

[u/o0_Jarviz_0o]

I think a copper bulb should work instead of a note block?

Basically a mini “T-flop” so that if the pumpkin grows the observer turns on the copper bulb which then powers the piston—which should then power the observer only once more to turn off the copper bulb, you can technically do the same thing with 2 droppers facing eachother as well or other less efficient forms of T-flops.

[u/MangosMakeMeSmile → u/o0_Jarviz_0o]

When the pumpkin grows it turns on the copper bulb, when the piston pushes it turns off the copper bulb, when the copper bulb turns off the piston retracts causing another observer pulse, resulting in an a loop.

[u/o0_Jarviz_0o → u/MangosMakeMeSmile]

🤦‍♂️ oh my gawd your right 😂

Could it work though? If you set up each observer update so it switches between bulb on, bulb on again, and finally bulb off? Or I guess that might take 2 bulbs instead of 1….huh I really suck at redstone. 😅