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Show HN: I built a synth for my daughter

https://bitsnpieces.dev/posts/a-synth-for-my-daughter/
341•random_moonwalk•5d ago•76 comments

FreeMDU: Open-source Miele appliance diagnostic tools

https://github.com/medusalix/FreeMDU
87•Medusalix•2h ago•15 comments

Replicate is joining Cloudflare

https://replicate.com/blog/replicate-cloudflare
85•bfirsh•1h ago•23 comments

Geothermal energy might be the baseload revolution we've been looking for

https://www.newyorker.com/magazine/2025/11/24/why-the-time-has-finally-come-for-geothermal-energy
23•riordan•2h ago•24 comments

Giving C a Superpower

https://hwisnu.bearblog.dev/giving-c-a-superpower-custom-header-file-safe_ch/
142•mithcs•5h ago•101 comments

Celtic Code: Drawing Knots with Python

https://2earth.github.io/website/20250202.html
30•HansardExpert•2w ago•4 comments

C++ implementation of SIP, ICE, TURN and related protocols

https://github.com/resiprocate/resiprocate
48•mooreds•1w ago•0 comments

Ned: ImGui Text Editor with GL Shaders

https://github.com/nealmick/ned
35•klaussilveira•4h ago•8 comments

Craft Chrome Devtools Protocol (CDP) commands with the new command editor

https://developer.chrome.com/blog/cdp-command-editor
77•keepamovin•1w ago•16 comments

Are you stuck in movie logic?

https://usefulfictions.substack.com/p/are-you-stuck-in-movie-logic
20•eatitraw•3h ago•6 comments

Building a Simple Search Engine That Works

https://karboosx.net/post/4eZxhBon/building-a-simple-search-engine-that-actually-works
214•freediver•12h ago•57 comments

Heretic: Automatic censorship removal for language models

https://github.com/p-e-w/heretic
677•melded•1d ago•311 comments

Fastmcpp (Fastmcp for C++)

https://github.com/0xeb/fastmcpp
40•0xeb•3d ago•2 comments

A file format uncracked for 20 years

https://landaire.net/a-file-format-uncracked-for-20-years/
250•todsacerdoti•1w ago•44 comments

Show HN: Reverse perspective camera for OpenGL (Three.js)

https://github.com/bntre/reverse-perspective-threejs
9•bntr•1w ago•1 comments

Listen to Database Changes Through the Postgres WAL

https://peterullrich.com/listen-to-database-changes-through-the-postgres-wal
149•pjullrich•6d ago•42 comments

A 1961 Relay Computer Running in the Browser

https://minivac.greg.technology/
112•vaibhavsagar•13h ago•30 comments

PicoIDE – An open IDE/ATAPI drive emulator

https://picoide.com/
158•st_goliath•16h ago•34 comments

The fate of "small" open source

https://nolanlawson.com/2025/11/16/the-fate-of-small-open-source/
260•todsacerdoti•20h ago•198 comments

GCC 16 considering changing default to C++20

https://inbox.sourceware.org/gcc/aQj1tKzhftT9GUF4@redhat.com/
61•pjmlp•2h ago•60 comments

I finally understand Cloudflare Zero Trust tunnels

https://david.coffee/cloudflare-zero-trust-tunnels
267•eustoria•22h ago•87 comments

The Pragmatic Programmer: 20th Anniversary Edition (2023)

https://www.ahalbert.com/technology/2023/12/19/the_pragmatic_programmer.html
174•ahalbert2•19h ago•48 comments

Why Castrol Honda Superbike crashes on (most) modern systems

https://seri.tools/blog/castrol-honda-superbike/
133•shepmaster•19h ago•28 comments

FPGA Based IBM-PC-XT

https://bit-hack.net/2025/11/10/fpga-based-ibm-pc-xt/
207•andsoitis•1d ago•43 comments

Republican push to make U.S. census surveys voluntary alarms statisticians

https://www.science.org/content/article/republican-push-make-u-s-census-surveys-voluntary-alarms-...
59•pseudolus•4h ago•32 comments

Neuroscientists track the neural activity underlying an “aha”

https://www.quantamagazine.org/how-your-brain-creates-aha-moments-and-why-they-stick-20251105/
137•wjb3•18h ago•35 comments

Z3 API in Python: From Sudoku to N-Queens in Under 20 Lines (2015)

https://ericpony.github.io/z3py-tutorial/guide-examples.htm
140•amit-bansil•21h ago•12 comments

Fourier Transforms

https://www.continuummechanics.org/fourierxforms.html
169•o4c•1w ago•26 comments

Quest for Permissively Licensed PDF Library in C#

https://duerrenberger.dev/blog/2025/11/04/quest-for-permissively-licensed-pdf-library-in-csharp/
48•ingve•1w ago•41 comments

Runit Linux: Complete Guide to Unix Init Scheme with Service Supervision

https://codelucky.com/runit-linux-init-service-supervision/
65•smartmic•5d ago•37 comments
Open in hackernews

Mysterious drones have been spotted at airports across Europe

https://www.bbc.co.uk/news/articles/crkl3d6pegpo
45•fumblebee•3h ago

Comments

Yokolos•2h ago
If we see a war between Russia and the EU, we're going to have to deal with them learning from Israel and using the same idea of decentralised drone hubs attacking military and civilian targets across the entire continent. We're woefully underprepared to deal with something like this. Western Europe still thinks that if a war breaks out, it'll be tanks and soldiers going into the Baltic states, and we'll crush them with our advanced arsenal. It'll be more like when Russia took eastern Ukraine. A hard push, then months of digging in as they proceed to genocide the Baltics, gaslight the West into thinking it'd be easier and safer to just hand over the Baltics without a big fight and wage asymmetric warfare across Europe and severely hamper any military response by hitting the logistic chains at every point.
billy99k•1h ago
Do you really think after years of crushing defeats in battle and sanctions, that they have the money or soldiers to fight the EU? If they did, they would have taken over Ukraine by now.

Now if China gets involved? It's a different story.

immibis•1h ago
They don't need money or soldiers, but drones.
victorbjorklund•1h ago
How would they get drones without money or soldiers?
aduwah•1h ago
Oil still flowing
Y-bar•1h ago
Yup.

China, Turkey, and India are main buyers of Russian oil at the moment: https://energyandcleanair.org/october-2025-monthly-analysis-...

gambiting•1h ago
If you read what top generals in various countries in the EU are saying(especially on the East side), their main concern is that Russia is making thousands of brand new tanks, cannons, support vehicles......and they are all going into storage. Very few are actually getting sent to Ukraine. If these guys are saying that large scale conflict with Russia seems almost inevitable within few years.....what qualifications do I have to disagree with them? Obviously I don't want this to be true - far from it.
pdabbadabba•1h ago
I’ve never heard anyone say this. Source?
Cthulhu_•26m ago
I'm also curious, why would Russia continue to send thousands to their deaths while holding back supplies and stuff? Unless it's intentional to appear weaker than they are.

But I don't see how that would work, unless the US is intentionally witholding intel from their allies - the US, since the invention of spaceflight, has had spy sattelites trained at Russia and they would see large accumulations and transports of tanks and tank parts.

kakacik•1h ago
Don't underestimate lack if willingness of EU folks to see their dead, or have hospitals or kindergardens bombed by russians on purpose, just like they routinely do in Ukraine. Maybe it can bring on more resistance but I wouldn't hold my breath, european population right now is weak.

Also russia has firm footing in EU politics already - for example every single far right group is parroting russian propaganda even when directly aimed against given country. It took decades to build to sow division in whole EU and they are using it now to their fullest.

[EDIT] Gotta love the downvotes, I am just describing what I see across whole EU including my own country. Would love some constructive feedback but this is clearly a touchy topic for many folks

DocTomoe•1h ago
It's Schroedinger's Red Army: Too incompetent and weak to conquer a third-rate power, but prepared and willing o attack NATO-coordinated Western Europe any day now.

Such is propaganda: You need to keep the population in fear so they will follow your policies.

Cthulhu_•28m ago
If China gets involved directly (e.g. not through supplies) then the conflict will escalate; no party wants to escalate this, and for years now this has been a tight-rope proxy war of sorts, where Europe and the US try to support Ukraine as much as possible without being directly involved. Likewise, Russia has been getting supplies and people from their allies.
littlestymaar•1h ago
I'm not convinced by your conclusion.

I mean of course drones would be a massive problem for western forces as they have never faced that kind of threat at scale.

But at the same time the Russian army has suffered dramatic attrition in Ukraine, especially in anti-air capabilities which used to be USSR's specialty and which western analyst feared it would allow the Russians to perform wide anti access on the Baltic's while they would quickly take over the Suvalki corridor and the whole Baltic states soon after.

With limited maneuvering capability left to quickly overwhelm local land armies and a significantly diminished air defense asset, I think the Russians would just lose the sky very quickly and then be unable to supply their ground forces.

And I really don't think Putin wants to lose a quick conventional war and end up with just the nuclear deterrence as his only card so I'm not too worried about him attacking EU directly. (But then again it made little sense to attack Ukraine in the first place yet he did it no matter what, so who knows…)

(Had the Ukrainian army collapsed and the 2022 campaign gone as planned by the Russian command, then the prospects would have been extremely grim for the Baltic states and the European Union as a whole. We Europeans collectively owe a lot to the Ukrainians).

sigwinch•56m ago
On the topic of what Putin wants, I’m increasingly swayed that domestic politics limit the choices he’s given. I wonder how the same siloviki but a different leader would perform.

On the topic of a wide drone attack coinciding with land invasion, I think (rightly or wrongly) the drone attack will be attributed to Russia early. Even though the life of a Russian soldier is approximately the same as a drone, it’d be very helpful for Russia to manifest the drones in support of some other origin of the troops.

bluGill•1h ago
The EU military leaders are watching Ukraine closely (as is any other competent military leader anywhere in the world) and trying to figure out how they will handle this problems. The EU is also talking to Ukraine military leaders and brainstorming solutions that Ukraine is trying in real time (not all military leaders are, but a lot of countries outside of the EU are). The EU is also designing new weapons/systems with the current situation in mind, it is likely that these (whatever they are - this is classified but I can say it with confidence anyway because it is so obvious there is no way they are not doing something) will be ready before Russia attacks.
slightwinder•1h ago
> Western Europe still thinks that if a war breaks out, it'll be tanks and soldiers going into the Baltic states, and we'll crush them with our advanced arsenal.

Drones are not for conquering, but destruction. We see this in Ukraine now, where Drones are not making the whole war, but are just one gear of the machinery. And Western leaders know this, they are preparing Drones, but refitting the western machinery takes time. Probably one reason why they seem busy to bind Russia in Ukraine.

Yokolos•1h ago
> Drones are not for conquering, but destruction.

Yes, and we have plenty of infrastructure to destroy. It's a target rich environment.

> And Western leaders know this, they are preparing Drones

I've seen zero indication that this is true. Do you have sources that we're in any way preparing for a large-scale drone war?

slightwinder•1h ago
> Yes, and we have plenty of infrastructure to destroy. It's a target rich environment.

Yes, but how is that relevant? Everything is always open for terror. Russia itself is not safe either. Or are you assuming Russia is out for pure blind destruction? Degrading themselves to become lousy terrorists? Just spreading destruction for no reason?

I would assume they at least will have some aim and reasoning behind their targets, which would mean they will come with soldiers and tanks, and conquer land, or destroy the highest profile-targets. In the first case, they will have very limited resources to spare for attacks on middle European targets. For the second case, you only need to focus your defence on those targets.

> I've seen zero indication that this is true.

May you are following the wrong sources? Building up drones-defence is in progress for a while now. Whether it's going well is a different story, but I would assume that they will not talk very openly about those things for obvious reasons.

boriskourt•1h ago
Not a bad overview of the situation! Worth it for some of the questions about what is actually efficient and not just technically effective. Especially at this scale.

> "The aggressor", he concludes, "will observe, adjust, repeat – until they get through".

Reminds me a lot of digital sec.

baq•1h ago
it's just security, digital or not. sun tzu's art of war is timeless and widely applicable (including outside of the military or even security domains) for a reason.
modzu•1h ago
before ukraine it was aliens
mikkupikku•1h ago
(It was drones then too.)
Toutouxc•1h ago
I still haven’t seen any specifics on the type of drones spotted at those airports. Is the other side just sending random people with cheap FPV drones? Or are they flying Shaheds around airports? I could take my 6” FPV drone and go buzz the tower at a nearby international airport, if I wanted. It costs less than 500€ for the entire kit and with ELRS and high power analog VTx you can do it from kilometers away and run before they catch you. Obviously it’s illegal as fuck.
sigwinch•1h ago
I heard it’s a mix. Suggestible local people on Telegram are coaxed to launch civilian stuff at a time and place. This clouds the sensor data of the true launches.

I don’t know if we’ve seen Shahads since 10 September, but note that Shahads can be ship-launched as well.

mosst•45m ago
So this is happening in the EU? I only heard about such cases happening in Russia. Where did you read about this?
sigwinch•30m ago
It’s well documented, Latvia, Poland, and it takes time to build the case so there are probably more.

https://www.theguardian.com/world/ng-interactive/2025/may/04...

https://meduza.io/en/feature/2025/01/16/we-need-eyes-and-ear...

ACCount37•1h ago
Civilian drones most of the time.

It's thought that it's Russian illegal agents doing this. A lot of them locals recruited online. Really cheap ops done by really cheap people, using cheap and deniable gear.

mosst•49m ago
I have heard about this happening in Russia but not the other way around. Can you please elaborate?
sigwinch•36m ago
As of October, Russian efforts via Telegram are associated with the seemingly-spontaneous swarms around places like The Hague.

https://www.lawfaremedia.org/article/the-cyberespionage-gig-...

Cthulhu_•31m ago
It makes sense. In the Netherlands, young people (<18) have been recruited for all kinds of stuff by organized crime; bank account money muling as part of laundering operations, laying bombs, getting drugs / other smuggled stuff out of shipping containers in ports, that kind of thing. They target these because for them, a few hundred € is a huge sum, and the legal system is very forgiving to underage people, assuming they even get caught.
__alexs•1h ago
Is this like that time we closed Gatwick for 3 days because of a collective delusion?

Every news report I read about this stuff has at best /r/ufos level of uselessly vague photography.

zipy124•59m ago
I was there for that, ended up getting the eurostart instead, still can't believe that it was basically all for nothing and we still have no information about it really.
thatgerhard•1h ago
The BBC is pretty much the onion now imo.. They lie which makes them the opposite of the news.
monooso•1h ago
Oh hai Donald.
sigwinch•51m ago
A few people have great information on drones. Why would they become sources for RT?
Cthulhu_•19m ago
If you make a bold claim like that I hope you have the sources to back it up. News outlets spreading misinformation is a criminal act; it was in the UK's 2003 Communications Act [0] and has been updated in the 2023 Online Safety Act [1], with some people already having been convicted [2] for spreading misinformation.

[0] https://www.legislation.gov.uk/ukpga/2003/21/section/127

[1] https://www.legislation.gov.uk/ukpga/2023/50/section/179

[2] https://www.derbyshire.police.uk/news/derbyshire/news/news/s...

mosst•3m ago
Exactly, there's a difference between spreading information that is factually incorrect and reporting (or not reporting) information in a way that is misleading.
randomNumber7•1h ago
The way the german government reacts to this makes it pretty easy for any lone actor to do state level damage.
Cthulhu_•1h ago
That's why I don't understand why there isn't a more aggressive response to flying drones illegally near airports. IMO they should just be shot down.

Actually some years they were very proudly showing birds of prey that they had trained to do just that. Whatever happened to that?

After 9/11 there was a huge worldwide shift in e.g. airplane security due to the threat of terrorism, but now there's drones out there they can fly into planes or that can drop bombs they're doing... what? Mentioning it in the news?

FinnKuhn•1h ago
How do you expect to shoot them down? They are small and very quick and disappear shortly after appearing.
tokai•58m ago
And in many cases its simply not legal to start shooting at unidentified drones in an urban environment.
prennert•45m ago
This is not an issue for the Government though. They can change the laws. That takes time and due process of course. But thats what the German government is doing [0]

[0]: https://www.bmi.bund.de/SharedDocs/gesetzgebungsverfahren/DE...

jiehong•57m ago
Stand-by drone-intercepting drones?

Tracking them is a need first and foremost. How about a down-facing radar on top of the Aviation Control Tower?

FinnKuhn•30m ago
I think the issue is response time.

Once a drone has been spotted notifying the correct person and getting the drone started would take a few minutes I assume.

Furthermore you can't really deploy a drone at an airport while it is still active, which is the reason they are banned from operating there in the first place.

jiehong•19m ago
I was about to counter your first part with automatic detection and drone launching, but your second point makes sense.
FinnKuhn•16m ago
From the other comments I believe that tracking to identify the operator and launch site together with automated targetted jamming are the most effective solution. I don't know if such a system exists already and if it is quick enough to react without interferring with airport operations.
infecto•55m ago
Jammers work pretty well. I would expect most large airports would have a defense response. They would have the tools setup to one instantly identify and track said drones come within the space and two have the tools like the portable jammers to “shoot” it down. These tools are not that expensive and exist from multiple vendors.

I would have expected this to be table stakes at running large busy airports.

FinnKuhn•32m ago
How quickly can you deploy a portable jammer? The drone might have disappeared until you have done so already. So you definitelly need automated systems for detection and targetting, which will probably take time until they are widely available.
Cthulhu_•35m ago
If they're detectable they can be targeted; counter-drones for sure (which are also very fast), and there's automated rifle targeting systems specifically designed to target and shoot down drones (e.g. https://www.smart-shooter.com/). I'm confident that a system of automated turrets on and around an airbase could be set up. If shooting a gun near civilians is an issue, these don't even need to shoot bullets.

But of course, electronic countermeasures / jamming should be attempted first, so they can be recovered intact and traced.

FinnKuhn•25m ago
I think the issue is that you can't really use counter-drones or automatic weapon systems at an airport due to the threat they pose to the airports operations (automatic rifle systems at civilian airports, which are the ones targeted, wouldn't fly in Germany).

The same is true for jamming, which sounds like a bad idea at an active airport, although targetted jamming will probably work. Not sure how quickly such a system can be deployed however.

So that means you need to wait until operations have paused at which point the drone has already disappeared.

I fell like tracking the drone to identify the operator with strong zoom cameras mounted on the airport might work though. At least some commercial systems seem to use this approach: https://www.dedrone.com/industry/airports

slightwinder•4m ago
> That's why I don't understand why there isn't a more aggressive response to flying drones illegally near airports. IMO they should just be shot down.

This isn't allowed in most countries, so they usually also have no equipment for this. Some countries seem to have changed the laws recently for this case and building up on defence more openly now. Which also leaves space for speculations if this wasn't maybe also sometimes a false-flag-operation.

> Actually some years they were very proudly showing birds of prey that they had trained to do just that. Whatever happened to that?

They are trained for small slow commercial drones, those which are around the same size as the bird, or smaller. Military long-range-drones are usually a bit bigger and faster, meaning the bird could probably for simply reason of physic not doing much.

This probably is also a main problem here, that most drone-defences in the last years were developed against private actors, not military threats.

> but now there's drones out there they can fly into planes or that can drop bombs they're doing... what? Mentioning it in the news?

It's never been a real threat so far, so nobody really was working on it seriously. There is an endless amount of theoretical threats, you can't protect everything against all of them, you have to go case by case. But reacting takes time. This is going for just some months(?), and still not even a real threat, as nobody knows anything for real (as far as we know). But many things seem happening in secret, outside the public view.

Cthulhu_•1h ago
I dunno if calling them "mysterious" is really helpful in this case. Just shoot them down if they get close, that should be the response in a wartime scenario too. Plus, given it's in civilian areas, they can use the expensive laser defense systems to do that.
an0malous•59m ago
The mysteriousness is the main point of the article. These drones aren’t identifiable, across dozens of incursions this year alone, no one has taken any drone down or identified where they’re launching from or returning to in spite of all the advanced NATO satellite imagery and aerial surveillance that can identify individual people on the ground.
skc•1h ago
The fact that these drones are only appearing in NATO aligned countries makes it seem pretty obvious to me that it's one of two possibilities.

1) Russian sabre-rattling

2) NATO countries running "secret" drills in public in anticipation of 1)

The UFO community is of course running with a third option that doesn't warrant any seriousness.

infecto•53m ago
I would not rule out China out either. Let’s not forget some of their recent state backed exploits as well as the “weather” balloon that flew over America.
tarsinge•11m ago
If you take into account the silence from officials and politicians then 2) seems more likely.
fusslo•4m ago
What I don't understand is... is it really only NATO aligned countries?

Maybe I just didn't read the article well enough.

In the USA we get over 100 drone sightings near airports per month. ( https://www.faa.gov/uas/resources/public_records/uas_sightin...? ) ( we are certainly 'NATO aligned', but it's the easiest source of drone incursion records I could find )

What about Asian countries? African Countries? Does the EU have better drone detection? Does the EU overreact due to the current tension levels within the EU?

the whole article reads like a FUD-laced sales pitch for gathering public support for an expensive anti-drone tech. There's even a whole section talking about how it will be a 'financially controversial question'. The article starts with fearmongering around the drones not having explosives 'yet'.

Maybe there are normal or slightly elevated levels of drone incursion due to idiots with access to cheap drones. Maybe the drone-wall vendor working with their partners within the EU saw an opportunity to exploit fear to gather support

jiehong•1h ago
One thing that is particularly annoying: the lack of communication from the governments/police about the status of the investigation, or lack thereof.

Side question: How likely are autonomous reconnaissance drones today?

I'd expect them to be impervious to traditional jamming.

I could imagine a pair of drones, a few km apart, communicating by laser line-of-sight, where the reconnaissance one acquires data, send it to the nearby drone, that one would use it to confirm data and do something else with it (aka, spotter and actor).

mastax•52m ago
Have they been conclusively spotted? With evidence? Sorry I only skimmed the article. Until there is, I’m going to keep believing it’s some sort of mass delusion like UFO sightings. Not because I think some sort of drone attack is particularly unlikely, but because these sorts of mass delusions are evidently very common - like happened in New Jersey.
sigwinch•40m ago
9 September is probably where you want to start. Intentional swarm of military drones into NATO. Shahads shot down, no question about a Russian plan to test reactions along the perimeter.

Since then, coordinated launches of screens of smaller civilian drones. I don’t think we’ll get hard numbers, but I’ve heard that NATO is more interested in ground-detection of GPS and satellite uplink jamming.

So the question now is: how are some civilians coordinating within NATO countries, and how are they getting drones that can jam?

Cthulhu_•33m ago
Don't they show up on radar? I have no reason to doubt the detection of drones around airports and other infrastructure, especially given they already have enforced drone bans and therefore have installations specifically designed to detect and track drones.