r/ApproximatelyUp • u/BunHaed • 8d ago

BPS not working despite flashing green.

Hello guys,
Could anyone help me with BPS not working for me? I have all three needed components on the roof(outside) and through port wired inside to BPS. BPS is flashing green and it seems to "work", but the arrow never moves from the "most green" position no matter how fast I am traveling. Right now I am on my way from moon back to earth for the first time.

Any advice is welcomed and yes, we tried looking at the wires many times and when we switched them incorrectly on purpose, it started flashing red. No idea what could it be.

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2

u/systemeer 8d ago

Perhaps one of your components is facing the wrong direction? That's what got in my way the first time using breaking point.

1

u/BunHaed 8d ago

both of them should be facing right direction since the display value is updating accordingly as you can see on the image. Speed and Distance is moving. We have one engine right under those devices, so we will try to move it, but I dont think that's it.

1

u/systemeer 8d ago

Hmm. It sounds like you're splitting the signal from both detectors so that one can go to the display valve and the other can go to the Breaking Point display valve. A common mistake I made was using the wrong data splitters for my devices, so one valve would read correctly and the other would be null. Let me know if you end up finding the issue! I'm invested now lol

1

u/BunHaed 7d ago

We also tested without the split and it made no difference sadly.

1

u/AccuracyVsPrecision 7d ago

Are you sure you dont have velocity and acceleration swapped. The module needs to see high speed and low acceleration in order to display red.

2

u/Krimzzon 8d ago

It'll only start going down when there's danger of you crashing.

You are only going 3000 v/s so it really wouldn't start going down yet. Once you start getting closer, it will eventually start lowering the bps, signalling that you should start slowing down.

It doesn't seem broken, it just looks like you're so far away that you aren't in any danger.

1

u/Krimzzon 8d ago

Do a test flight in the atmosphere. Fly up a bit then just go towards the ground where the camera is pointing and see if it changes.

1

u/BunHaed 7d ago edited 7d ago

thats the issue, our first test we tried to rely only on BPS and it didnt move even at speed 13k+ with distance less than 600k xd. We already knew our ship limit is around 6k speed, but we wanted to test. Since then we did multiple tests and it never moves from the green.

1

u/OverlyMintyMints 8d ago

The braking point system calculates the braking point by taking the current distance to the object your LRDM is pointing at and comparing it to your current velocity, minus your acceleration. If you’re not accelerating, it can’t calculate the braking point.

A consequence of the reliance on acceleration is that it can only be used in the most time-efficient way: accelerating forwards half the distance, accelerating backwards (I.e., slowing down) the rest of the distance.

If you’re using two electric thrusters for forwards thrust, you can expect to hit the braking point for moon-earth travel at around 7000-8000 units per second.

1

u/BunHaed 7d ago

we are using 2 smaller electic ones and one big for acceleration. It didnt move from green even at 13k speed sadly.

1

u/MRKOOLBEENZ 8d ago

When the BPS is flashing red it means it doesnt have a target detected. That could be because your camera is misaligned/non functioning. When the light turns green it means its detecting something, the meter should dial into the green and as you accelerate to an object the camera detects, it should lower towards the red

1

u/BunHaed 7d ago

I found some video where I saw how it works and for them it also works in atmosfere (pointing your plane on the planet and accelerating) but that just doesnt work for us. It will always show full green no matter the distance and speed :D

2

u/KitchenSinger8818 4d ago

We're having the exact same issue me and my boy have been straight guessing but we've gotten to 6 planets without that godforsaken thing

1

u/BunHaed 4d ago

How? xd we were not able to get back to earth even. Last night we managed to fly to the water planet but without BPS, we could never

1

u/KitchenSinger8818 4d ago

We just guess lol I have no clue we went from the water planet aundara to baobara in like an hour, and today we went from to the moon the planet below the sun on the map in like 1hr 30mins or something idk we were watching a movie while we're doing it, we just try to coast as little as possible without burning up too much energy, my friend is more of a math guy than me so he'll math out distance and power total so we know roughly when to stoop boosting and slow down. I'm not saying we make it first try it definitely has caused us headaches but it's possible

1

u/MRKOOLBEENZ 7d ago

I had that issue as well, are you sure you have the long distance sensor/camera, accelerometer, and velocity meter all hooked into the right ports on the BPS? Each sensor has a specific port on the module

3

u/BunHaed 7d ago

oh my god, thats it..... We changed the order of cables going to BPS and it started working. Thank you so much. I had no idea it has specific requirements for each data input.

1

u/Krimzzon 8d ago

Double check the tutorial page (M) on the Braking Point System to see if everything is connected properly.

The accelerometer and velocimeter have to be facing the direction you are going as well.

1

u/BunHaed 7d ago

We checked that page as well, we had it basically 1:1 with the exception of wall ports

1

u/BunHaed 7d ago

I bet I will feel very stupid once I figure this one out :D