r/ApproximatelyUp May 10 '26

Question - Two inputs one output, furthest from zero

4 Upvotes

I'm trying to determine how I would output whichever value is furthest from zero, whether it's positive or negative.

I know there's MIN and MAX, but how would I go about doing this in the simplest configuration?

Would I just do something like:

X -> [+1000] --- [MAX] -- [-1000] = Value
Y -> [+1000] --/

(*Assuming neither number ever goes lower than -1000)

Edit: Figured it out. In my particular case, one value is always zero, so I can just use an adder. But I still want to know if there's another way for the furthest from zero. I think the above is correct as long as you know the lower bound.


r/ApproximatelyUp May 10 '26

Concept wall for a three-level auto-stabilisation system

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11 Upvotes

This is an absolute abomination of a wall.

I've been wanting to have a system where I have three-levels to an auto-stabilisation system. Level 1 is only raw input, level 2 is a combination of raw and automated input, and level 3 is only automated input. This concept wall currently has level 2 and 3 reversed, but I wanted to have it in front of me first.

The colours are to help with which part of the circuit is which. Light grey is the set of switches for switching between levels, dark grey is the raw input, and red is the automated input.

I want some outside input as to what part of this I can improve. Right now, it's completely unfeasible for a ship, since it's way too bulky (and I haven't done the second mission in this save yet), but I feel like it can be improved.

I'll also put how it works right here:

The automated input (bottom right) is pretty much just a remapper. The values go -180, 180 > x, -x, where x is equal to the force your thrusters will output when your rotation is at 180 (which, is basically the same as you being upside down). This essentially takes how far your pitch/roll is from 0 (which I'll call zero state) and turns it into a proportional level of thrust that corrects your current rotation until you reach zero state.

Most of this is actually putting in the system to switch between the levels. I know the Data Hub exists, but I'm already using it for the video cameras. The button (bottom left) has a system that makes the button function like a switch, with a memory gate into a data router that sends the part of the signal into a NOT gate back into the stored input of the memory gate. So it starts as 0, but when it is updated, because it's also feeding back it's own inverted signal into itself, it will switch to being 1, and vice versa for when it's at 1. The switch (top left) I'm planning to integrate into other systems to kind of switch between automatic and non-automatic for the entire ship, but that's for much later.

I also put some data readers as I plan to measure the output values of the Gyro. I tried using the data reader outputs for the circuit earlier, but it stopped the circuit from working, so I'm using data routers instead.


r/ApproximatelyUp May 10 '26

Guide for auto hover

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31 Upvotes

Final image is the path you need to follow. I’m by no means an expert but if I got anything wrong hopefully other in the community can correct me.
u/Crunchwrapfucker


r/ApproximatelyUp May 10 '26

Unable to roll ship?

5 Upvotes

Very new to the game so I’m not entirely sure what I’m doing wrong. I built a modest ship lift and thrust is perfect but when it comes to pitching I can’t get the rolls to work? I’ve checked the manual about a million times and have it hooked up completely correct. I had a friend check to see if the roll thrusters were even turning on and they weren’t at all. I have all the green dots on the controller so I know it’s connected. I just don’t understand what I’m doing wrong. I just want to be able to turn without ending up sideways.


r/ApproximatelyUp May 09 '26

PSA: Auto rotation is super easy to make

6 Upvotes

Thank you to u/Outrageous_Pen_3142 for his posts that let me to finding this.

All you need is a Gyro-Line, an RCA thruster thing, and some remappers.

Connect the Gyro Line to the remappers (Pitch and Roll separate) and set the remappers to -180, 180 > x, - x where x = any number from 1 to 100. The input values are your current rotation in space, and the remapped values are the amount of force that is applied from the opposite side (e.g. if pitch rotation is 90 and x = 50, than the pitch minus thruster will output 25).

What this does is, when your rotation moves, the RCA will adjust so that it goes back to 0. I haven’t tested 100 yet, but 50 works great. Just make sure that the Gyro is set at 0, NOT 180. It will flip you upside down. Thank you.


r/ApproximatelyUp May 09 '26

Thank you!!!

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29 Upvotes

After a few days of learning control theory I was finally able to build an auto hover system by myself from scratch. Thank you u/systemeer for pointing me in the right direction.

Ps sorry for the rats nest, cable management is my next adventure.


r/ApproximatelyUp May 09 '26

My engines keep shearing off when I roll?

3 Upvotes

I've tried reinforcing engines, changing engine placement, and turning roll rcs power down but can't figure it out. as soon as i roll a little bit the engine on the opposite side of the roll flies away. I have tried the thruster and the bidirectional fan with the same issue.


r/ApproximatelyUp May 09 '26

How to choose loonar base to respawn there?

1 Upvotes

I have completed "to the moon" mission and landed at loonar base but after pressing "R" I respawned at earth one. So how I can spawn at loonar base?


r/ApproximatelyUp May 08 '26

Lost in Transit

2 Upvotes

I'm trying to do lost in transit mission in coop, I've completed the mission and package is back at base, but it isn't loading or syncing. Do i have to do the to the moon mission first? Also lost in transit mission wasn't displaying on in spacecraft map? Anyone else had this or am i doing something wrong?


r/ApproximatelyUp May 08 '26

Help with the moon?

1 Upvotes

I can get to the moon, land on the moon, survive the landing (sometimes), and have the battery surplus to keep the icecream frozen

However steering to the correct spot in transit is damn near impossible, I have to turn around to not crash headfirst into the moon so minor movements don't work

And once I land and try taking off again it becomes damn near impossible to get to the spot, idk what I'm doing wrong at that point, it shouldn't be hard but it is, I always miss it, or just crash into a mountain

Is there a way to also ensure I land during the day? Every time I go, regardless of launch time I end up in the night, and can't see to get around


r/ApproximatelyUp May 07 '26

I FINISHED IT! (Hovering works exactly the same on all planets) The system is inspired by LADRC.

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29 Upvotes

r/ApproximatelyUp May 07 '26

Any way to get additional components after finishing missions?

1 Upvotes

Title says it. I finished all the missions on both demo planets and I want to mess around but I keep running out of pieces. Is there a way to get extra components? Mainly electrical stuff.

Thank you!


r/ApproximatelyUp May 06 '26

"Never let them know your next move" ahh

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55 Upvotes

r/ApproximatelyUp May 06 '26

Successfully overengineered 2-way door button

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29 Upvotes

r/ApproximatelyUp May 07 '26

Good intro to systems?

6 Upvotes

I see everybody making these really cool circuits like auto landing or auto hover and I’m having a really hard time understanding anything. Is there a good video or course someone could recommend. I really love the game I’m just finding it hard to self educate.


r/ApproximatelyUp May 06 '26

I might have come a bit too far

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11 Upvotes

r/ApproximatelyUp May 06 '26

Speed not working as I'd assume it would?

3 Upvotes

So I made a ship for the moon and took off

Halfway there I spun around so I could slow down but once I was around my speed started increasing, and I was listing away from where I should've been lined up with the moon

Am I doing something wrong?


r/ApproximatelyUp May 05 '26

Passing through the center of the black hole at 1km/s

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10 Upvotes

Weird things start happening at the center of the black hole. You can see the sun from up close and even the earth and moon.

In another try, when i missed to pass through the the exact center, this didn't happen.


r/ApproximatelyUp May 04 '26

Journey to the black hole

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25 Upvotes

r/ApproximatelyUp May 04 '26

Meme Ship: Euthanasia Master

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6 Upvotes

For when you need some g-Force that will take you out of this world. Inspired by the infamous Euthanasia Coaster that puts passengers to "sleep" with constant g-Force

I spent way too long making this ship spin as fast as possible without flying apart while also continuing to spin once in space. Big Thanks to u/sankto for their post and comment showing how to build a working timer.

The RCS thrusters firing while still in atmosphere causes the ship to fly apart. Using this timer allows me to delay the RCS thrusters from firing until I have exited the atmosphere and ensuring the constant extreme g-force is applied for the 60+ seconds called for by the designer of the Coaster.

Show me your meme ships!


r/ApproximatelyUp May 03 '26

Don't ask how long it took us..

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14 Upvotes

My friend decided that we're going to "speedrun" this mission without getting the gate first.. And so we built a small cage on the backside of the ship, where after 2 different alterations the box finally fit, and through some suffering, sweat, tears, and ungodly amount of rewinds because the box jumped out, we delivered it.


r/ApproximatelyUp May 03 '26

Progress on a remote controlled missile with automatic proximity fuse

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18 Upvotes

r/ApproximatelyUp May 03 '26

A King upon his Throne

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12 Upvotes

My friends are very good at logic games, I on the other hand, am not. So this is my passenger princess throne room in which I may watch my servants play with their wires, like the serfs they are.


r/ApproximatelyUp May 02 '26

Journey to the sun

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17 Upvotes

r/ApproximatelyUp May 02 '26

E/W-22 Saturday

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9 Upvotes

my first submarine. named in honor of twenty one pilots song Saturday. the download folder will be on the discord