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Posted by ZacnyLos 11 hours ago

$96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor(github.com)
327 points | 301 commentspage 2
sy26 2 hours ago|
> Contributors > novatic14 Alisher Khojayev > claude Claude > hobostay Qiaochu Hu

I wonder how much role Claude plays in enabling the designing/building of it

codethief 10 hours ago||
As the YouTube comments say:

> This guy really wants that defense contract.

roysting 9 hours ago|
They may just give it to him to buy him. It’s the first stage of neutralizing the peasantry of rebellious thoughts against the aristocracy.
kikkia 8 hours ago||
Really cool work on making your own rocket motors.

I wonder why he calls it a MANPADS (Man portable Air Defense System) It does slightly resemble a Manpads, but with a GPS based guidance system it would not able to be used for air defense, even conceptually. Typically manpads would use something like an infrared/optical or radar guidance system which would run way more than $5. This does seem like a cool home made AGM-176 or similar. There's always been a side project idea in the back of my head about what the cheapest IR or laser guided RC Plane launched rocket would look like. A cheap rocket design powered by some model rocket engines that could be used for a drone -> drone intercept cheaply.

Awesome job taking a fun idea into reality. It's really impressive to see the design work

isoprophlex 9 hours ago||
This is obviously a missile, and I'm not well-versed in weapons tech, but won't this need a camera to actually track and take out a flying object? So far I just see gps and barometric sensing...

Also 3D printing and some electronics, ok fine, but where do you get the rocket propellant? That seems at least as critical as the software and sensing side of things...

icegreentea2 8 hours ago||
Yeah, this current project uses external sensors (a camera array/grid) for guidance.

He's using potassium nitrate/sugar as his rocket fuel.

amelius 8 hours ago|||
Watch the video. He makes his own propellant.
tamimio 8 hours ago||
> rocket propellant

You can homemade it, kno3+sugar

hermitcrab 4 hours ago||
You can also blow your hands off, blind yourself and/or burn down the building. So be very careful if you try this. Note it is illegal to make your own solid fuel motors in some countries (you need a special license in the UK).
tzury 9 hours ago||
Given the navigation is done by the cameras (not GPS) you will also need to do some work with the second repository (by the same guy)-

https://github.com/novatic14/Distributed-Camera-Node-Trackin...

holografix 9 hours ago||
Fascinating, is miniaturisation and “democratisation” of offensive capabilities via 3d printing and consumer tech going to impact defensive capabilities as well?

Are we going to see foot troops carry one of these strapped to their backpacks and launched autonomously to counteract incoming drones?

hermitcrab 5 hours ago||
Impressive. But:

-Is a 3D printed assembly really going to withstand the heat of the rocket motor? Or is that going to be replaced with metal?

-The solid motor grain shown looks pretty janky. I definitely wouldn't want that any near me when it fired, let alone on my shoulder.

clbrmbr 6 hours ago||
I strongly object to building weapons. It is not right. Raise your consciousness, young hacker.

I grew up building homemade rocket engines to power model rockets. I even programmed a flight computer in ASM.

I was always quite risk averse and, then being only shortly after 9/11, I told my friend I worried what we were doing may be illegal or otherwise get us in trouble. So he picked up the phone and called the county fire marshal. My friend explained EXACTLY what we were doing, down to the potassium nitrate and the homemade black powder and nitrocellulose igniters. The fire marshal paused for a long moment and said “it’s not against any law I’m aware of. Just don’t start any fires.” We proceeded to have many successful flights and participated in NERF (a rocketry club that used to get 12kft clearance from FAA before the govt started stonewalling us).

I feel very fortunate to have grown up in an environment where that was permitted. I fear that my children will not have the same privilege—for many reasons, but one factor is people putting violent things like this on GitHub. Please take it down.

swiftcoder 5 hours ago||
> I strongly object to building weapons. It is not right.

I used to object to building weapons. Now the EU is engaged in a proxy war with Russia, and the US has repeatedly threatening to annex Greenland. Suddenly the need for a domestic weapons supply chain does not seem so farfetched

jjmarr 5 hours ago|||
It's impossible to get a job nowadays so new grads will do anything to stick out.

You don't really understand the desperation we're going through right now. OP wants to be visited by the feds.

ryandrake 5 hours ago|||
Seems like a one way road--the way things are getting stricter and stricter. My parents did shit when they were growing up that would have landed me in prison, and I did plenty of things growing up that would have landed my kid in prison.

I fear the next generation is going to grow up confined to a bubble where they're only allowed to stay home and mindlessly consume corporate approved product, never make things, never build things, never destroy things, never hack a computer game, never reverse engineer a wire protocol, never go out and walk around and explore, never race things, never jump off things, never blow things up or burn them down, never protest things or yell at someone, never get into a fistfight, never take physical risks and learn what hurts and what doesn't. In 2050, growing up means just 1. go to church, or 2. watch streaming.

ivanjermakov 6 hours ago|||
I was suprised seeing american youtube folks building rockets (including orientation and guidance systems) in their free time. In many countries doing this is borderline jail time.
atemerev 5 hours ago||
Unbombed people are cute.
infinitewars 5 hours ago||
That's why it's so important for people who can hold a moral line, to do so. Violence breeds violence.

A good engineer in America can afford avoiding weapons work.

muyuu 4 hours ago|||
it's good work if it helps the right people
infinitewars 3 hours ago||
Who are the "right" people to kill? What happens when govt decides to aim your weapons at the "wrong" people?
muyuu 2 hours ago||
the people who are invading another country in a war of conquest, for instance

you seem to believe we live in a world where there no longer are such wars of single-handed aggression

we don't live in that world

steve-atx-7600 1 hour ago|||
Right. Not knowing human nature doesn’t mean you won’t be affected by it in ways that you just haven’t thought of or don’t believe could happen to you.
infinitewars 1 hour ago|||
> a war of conquest

Israel invading Gaza is kind of proving the point? Those are American weapons bombing civilians.

atemerev 4 hours ago|||
A moral line is to help the right side with all heart, all mind and all might. If you know any other way to make Russia get off from Ukraine besides tons of cheap weapons - I'm listening. Otherwise, weapons are a necessity.
jofzar 9 hours ago||
God, I feel like I am going to be on a list after clicking that link.

The future is scary

nbernard 7 hours ago||
> God, I feel like I am going to be on a list after clicking that link.

It's a poor life that doesn't put you on a few such lists!

doodlebugging 7 hours ago|||
But you get more followers and that's the goal today isn't it? You have to take the good with the bad. No one is categorizing the follower ranks by "good guys" versus "bad guys" so you never know when one of your "admirers" is only there to monitor you in case you get out of line.
roysting 9 hours ago||
What the “government” has in store for you is way scarier. You just don’t know it any more than a cow on a pasture knows what a slaughter house is, yet.
realo 8 hours ago||
But in Canada we ...

Oh shit. You're right.

getcrunk 9 hours ago|
I watched a YouTube video the other day about how the usa tracks missle launches globally. I would assume they have to pass a minimum threshold of power/heat/energy to be detectable.

Let’s all pray this toy project, if readily upgradable, is also trackable and well … the way we keep law and order is by actual policing and prosecuting. So hopefully this doesn’t get out of hand.

Very impressive, but very troubling.

nik282000 8 hours ago||
Right now, today, the US government and it's three letter agencies are being run by a club of human trafficking peodophiles and rapists. Not individual, isolated, crimes. An organized group of very twisted people, having 'immigrants' rounded up and killed, pushing women back into the 1920s, and trying to make anyone who strays from heteronormative a criminal.

Having some independent developers in the defence market is not necessarily a bad thing.

stavros 9 hours ago|||
Isn't it obvious that, if one person can do it, many more can do it as well, and probably have? It's not like they'll put it on GitHub.
lm28469 9 hours ago||
This thing doesn't do anything a launcher from the 70s couldn't do.

Global detection is for balistic missiles, not things launched by human portable devices

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