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OpenCiv3: Open-source, cross-platform reimagining of Civilization III

https://openciv3.org/
470•klaussilveira•7h ago•113 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
805•xnx•12h ago•487 comments

Show HN: Look Ma, No Linux: Shell, App Installer, Vi, Cc on ESP32-S3 / BreezyBox

https://github.com/valdanylchuk/breezydemo
156•isitcontent•7h ago•16 comments

Monty: A minimal, secure Python interpreter written in Rust for use by AI

https://github.com/pydantic/monty
153•dmpetrov•7h ago•65 comments

How we made geo joins 400× faster with H3 indexes

https://floedb.ai/blog/how-we-made-geo-joins-400-faster-with-h3-indexes
29•matheusalmeida•1d ago•1 comments

A century of hair samples proves leaded gas ban worked

https://arstechnica.com/science/2026/02/a-century-of-hair-samples-proves-leaded-gas-ban-worked/
91•jnord•3d ago•11 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
50•quibono•4d ago•6 comments

Show HN: I spent 4 years building a UI design tool with only the features I use

https://vecti.com
259•vecti•9h ago•122 comments

Microsoft open-sources LiteBox, a security-focused library OS

https://github.com/microsoft/litebox
327•aktau•13h ago•158 comments

Show HN: If you lose your memory, how to regain access to your computer?

https://eljojo.github.io/rememory/
201•eljojo•10h ago•133 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
326•ostacke•13h ago•86 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
409•todsacerdoti•15h ago•218 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
335•lstoll•13h ago•241 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
21•kmm•4d ago•1 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
4•romes•4d ago•0 comments

Show HN: R3forth, a ColorForth-inspired language with a tiny VM

https://github.com/phreda4/r3
52•phreda4•6h ago•9 comments

Make Trust Irrelevant: A Gamer's Take on Agentic AI Safety

https://github.com/Deso-PK/make-trust-irrelevant
9•DesoPK•1h ago•4 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
195•i5heu•10h ago•143 comments

I spent 5 years in DevOps – Solutions engineering gave me what I was missing

https://infisical.com/blog/devops-to-solutions-engineering
114•vmatsiiako•12h ago•38 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
152•limoce•3d ago•79 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
242•surprisetalk•3d ago•32 comments

I now assume that all ads on Apple news are scams

https://kirkville.com/i-now-assume-that-all-ads-on-apple-news-are-scams/
993•cdrnsf•16h ago•418 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
24•gfortaine•4h ago•3 comments

FORTH? Really!?

https://rescrv.net/w/2026/02/06/associative
45•rescrv•14h ago•17 comments

I'm going to cure my girlfriend's brain tumor

https://andrewjrod.substack.com/p/im-going-to-cure-my-girlfriends-brain
65•ray__•3h ago•26 comments

Evaluating and mitigating the growing risk of LLM-discovered 0-days

https://red.anthropic.com/2026/zero-days/
37•lebovic•1d ago•11 comments

Show HN: Smooth CLI – Token-efficient browser for AI agents

https://docs.smooth.sh/cli/overview
78•antves•1d ago•59 comments

Female Asian Elephant Calf Born at the Smithsonian National Zoo

https://www.si.edu/newsdesk/releases/female-asian-elephant-calf-born-smithsonians-national-zoo-an...
6•gmays•2h ago•2 comments

Show HN: Slack CLI for Agents

https://github.com/stablyai/agent-slack
41•nwparker•1d ago•11 comments

How virtual textures work

https://www.shlom.dev/articles/how-virtual-textures-really-work/
29•betamark•14h ago•26 comments
Open in hackernews

Traintrackr – Live LED Maps

https://www.traintrackr.co.uk/
100•recursion•2w ago

Comments

tobinfekkes•1w ago
I have the London board in my living room. It's one my favorite parts of the house. Can't recommend it enough.
codefeenix•1w ago
Wow this is presented exactly the same as the flight data led display. It is odd that the advertising method and the comments are similar to the previous.
ionwake•1w ago
which display is that? can you link it? sounds cool
KaiserPro•1w ago
Train Trackr is great, and the weather one is also good too.

If you are less into trains (heresy) but still want to look at unusual maps https://raildar.co.uk/map/KGX is your place to go. its a live junction schematic of any train junction in the UK.

lozf•1w ago
> unusual maps https://raildar.co.uk/map/KGX

Nice one, OpenRailTimes[0] is a similar style, but split in to smaller local sections by rail company and area.

I also like SignalBox[1] maps for their more traditional geographic layout, and for "less map -- more data", with accurate times that trains pass through stations and junctions, then RealTimeTrains[2] is hard to beat.

- [0]: https://www.opentraintimes.com/maps

- [1]: https://www.map.signalbox.io/

- [2]: https://www.realtimetrains.co.uk/

KaiserPro•1w ago
Open traintimes map is really nice. If/when work gets a video display wall, that's what I'm going to put on it, even though its not an industry we work in.
youngtaff•1w ago
I prefer Tracksy — https://traksy.uk/live

Works on a mobile phone too so I can check what’s happening when I’m at my local station and the train is late

Raildar is a pretty abysmal experience on mobile… locks up on this iPad when I try to zoom in

KaiserPro•1w ago
Traksy is much better on mobile, thanks for shout!
bongani123•1w ago
Ohky
sschueller•1w ago
Shameless self promotion. I make these: https://www.stationdisplay.com/
rooster212•1w ago
Very cool looking product. I'd seen the original product linked before but I really like the look of these! The screen looks unusual too, I've seen single colour OLED screens of a similar size but not multi colour LED ones. I'm not in the market for one of these but I'd love to get one of the screens to play with!
wedog6•1w ago
London underground looks awesome, but I can't imagine it having even the vaguest utility in terms of knowing when to leave the house.
tialaramex•1w ago
Because it's a metro service (some peak periods have 36 tph throughput), in most cases the answer will be that you should leave when you want to travel and then a train turns up and you board the train, so you don't need this information. But, the services may be disrupted or unavailable and that might mean you make different choices e.g. Victoria's main line was shut due to a One Under when I was there at Xmas, so I took a bus to a station that wasn't shut and continued the rest of my journey.
SahAssar•1w ago
> One Under

> (rail transport, slang, British) A person under a train; a person hit by a train after jumping or falling in front of it.

In case anyone else was confused.

jackfranklyn•1w ago
The data behind these comes from the Darwin feed (National Rail's real-time data) which is surprisingly good once you get past the initial authentication setup. Network Rail also publishes movement data via their OpenData platform if you want to go deeper - actual track circuits and signalling block occupancy.

What I find interesting is how these physical displays handle the inevitable "ghost trains" in the feed - cancelled services that still show as running, or trains that briefly appear in the wrong location. The software problem is messier than the hardware.

arranf•1w ago
Wish it included the overground!
iamflimflam1•1w ago
The blog is a much more interesting read than the product site: https://blog.traintrackr.io
netsharc•1w ago
The guy, Geoff Marshall (edit: the guy on the video on the main page, I've assumed for a while he's also the maker of this gadget, but it seems not) is also on YouTube: https://www.youtube.com/channel/UCd18OhMfRmjMjzSHP7Zrzmw . I like experiencing London/the UK through the scenery of his videos...

One time he and his girlfriend did a journey to visit every train station and stop in the UK (posted on a different channel): https://www.youtube.com/playlist?list=PL4PdgT_AV_nXshM-I7xjY...

Sadly for the romantics, they've since broken up...

richardhawthorn•1w ago
Thanks, we've documented how some of our products work, where we get the data, the manufacturing process, and how to write/upload your own code to your board.

We should have a couple more technical posts released this year as we update the way our boards get their data.

CPLX•1w ago
I put the NYC one in the office. It’s a good conversation starter and mildly mesmerizing.
enjrolas•1w ago
ayyyyy great to see someone from my local hacking community on the front page!
richardhawthorn•1w ago
Hi everyone, Richard here, the creator of these traintrackr boards. It's great to see this on the front page!

I've been designing PCBs for years, and designed over 250 at last count.

We have a couple of products in the pipeline to come out this year, but I'd love to hear what you think we should build next.

ionwake•1w ago
fantastic work Ive been a fan for a few years!

Maybe a general "train to newcastle / Birmingham" map like this? https://map-shop.co.uk/wp-content/uploads/2024/11/ms00004-uk...

A wimbledon tram one could be good and might appeal to the richer demographic ( im not sure ). https://www.croydon-tramlink.co.uk/info/gen/images/RouteMap....

Finally an overnight sleeper train only (europe) could be good: https://media.timeout.com/images/105981668/image.webp

Just suggestions I have no idea if these are good ideas.

ljsocal•1w ago
Build a BART- CalTrain version and make bank!!
tuukkah•1w ago
Here's BART: https://www.traintrackr.co.uk/product/bart3
afandian•1w ago
Curious why you went with a matrix over WS2812 or similar. That PCB looks like it was painful to route!
richardhawthorn•1w ago
We switched to a matrix partly for price, partly for improved reliability.

Regular RGB LEDs are a lot cheaper than the WS2812, around 6x cheaper when we made the decision to switch, which adds up when you have 768 of them.

WS2812 LEDs are much easier to route, but if one dies then every LED routed after that one stops lighting up.

tangotaylor•1w ago
I have one of these for Boston. It's awesome.

I want to find more art like this that updates in real-time, then I feel like I actually appreciate it in the long term. With regular static pictures on the wall I tune them out after they've been there a few months.

pimlottc•1w ago
The Chicago one could use a bit do a rework. The shape of the Loop is a very very distinctive, even iconic, but here it’s off — it’s squashed and fat, wider than it is tall, rather than narrower.

Obviously some compromises must be made for routing the traces but I’d consider the shape of the Loop to be the most essential element of the whole system.

Definitely very cool though!

phil21•1w ago
Love these! My wife gifted me a Chicago CTA map for a birthday gift a few years ago and it makes great wall art.

I found an in-box rated USB-C hardwired power adapter, and ran an additional outlet above an existing one. Then used a couple screwed together brass motherboard standoffs I drilled holes into the drywall for. To my surprise just some standard superglue in the holes have held these far more securely than needed.

Looks like a great piece of “90s retro art” and gets a lot comments from guest!

okgo_1996•1w ago
Build one for Seattle's Link light rail system! There's a new extension opening March 28, 2026, and then after that, the next extension is presumed to open 2032.

https://www.soundtransit.org/crosslake