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Show HN: LocalGPT – A local-first AI assistant in Rust with persistent memory

https://github.com/localgpt-app/localgpt
114•yi_wang•4h ago•32 comments

SectorC: A C Compiler in 512 bytes (2023)

https://xorvoid.com/sectorc.html
246•valyala•11h ago•48 comments

Haskell for all: Beyond agentic coding

https://haskellforall.com/2026/02/beyond-agentic-coding
49•RebelPotato•3h ago•9 comments

Bye Bye Humanity: The Potential AMOC Collapse

https://thatjoescott.com/2026/02/03/bye-bye-humanity-the-potential-amoc-collapse/
29•rolph•2h ago•23 comments

Speed up responses with fast mode

https://code.claude.com/docs/en/fast-mode
163•surprisetalk•11h ago•155 comments

Software factories and the agentic moment

https://factory.strongdm.ai/
195•mellosouls•14h ago•347 comments

Brookhaven Lab's RHIC concludes 25-year run with final collisions

https://www.hpcwire.com/off-the-wire/brookhaven-labs-rhic-concludes-25-year-run-with-final-collis...
71•gnufx•10h ago•58 comments

LLMs as the new high level language

https://federicopereiro.com/llm-high/
61•swah•4d ago•112 comments

Total Surface Area Required to Fuel the World with Solar (2009)

https://landartgenerator.org/blagi/archives/127
14•robtherobber•4d ago•3 comments

Homeland Security Spying on Reddit Users

https://www.kenklippenstein.com/p/homeland-security-spies-on-reddit
57•duxup•1h ago•13 comments

Hoot: Scheme on WebAssembly

https://www.spritely.institute/hoot/
179•AlexeyBrin•17h ago•35 comments

Stories from 25 Years of Software Development

https://susam.net/twenty-five-years-of-computing.html
170•vinhnx•14h ago•17 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
317•jesperordrup•22h ago•97 comments

First Proof

https://arxiv.org/abs/2602.05192
133•samasblack•14h ago•76 comments

Show HN: I saw this cool navigation reveal, so I made a simple HTML+CSS version

https://github.com/Momciloo/fun-with-clip-path
79•momciloo•11h ago•16 comments

Vouch

https://twitter.com/mitchellh/status/2020252149117313349
57•chwtutha•2h ago•9 comments

Al Lowe on model trains, funny deaths and working with Disney

https://spillhistorie.no/2026/02/06/interview-with-sierra-veteran-al-lowe/
102•thelok•13h ago•22 comments

FDA intends to take action against non-FDA-approved GLP-1 drugs

https://www.fda.gov/news-events/press-announcements/fda-intends-take-action-against-non-fda-appro...
112•randycupertino•7h ago•232 comments

Why there is no official statement from Substack about the data leak

https://techcrunch.com/2026/02/05/substack-confirms-data-breach-affecting-email-addresses-and-pho...
12•witnessme•1h ago•4 comments

Show HN: A luma dependent chroma compression algorithm (image compression)

https://www.bitsnbites.eu/a-spatial-domain-variable-block-size-luma-dependent-chroma-compression-...
39•mbitsnbites•3d ago•4 comments

Start all of your commands with a comma (2009)

https://rhodesmill.org/brandon/2009/commands-with-comma/
575•theblazehen•3d ago•208 comments

The AI boom is causing shortages everywhere else

https://www.washingtonpost.com/technology/2026/02/07/ai-spending-economy-shortages/
301•1vuio0pswjnm7•18h ago•479 comments

I write games in C (yes, C) (2016)

https://jonathanwhiting.com/writing/blog/games_in_c/
188•valyala•11h ago•172 comments

Microsoft account bugs locked me out of Notepad – Are thin clients ruining PCs?

https://www.windowscentral.com/microsoft/windows-11/windows-locked-me-out-of-notepad-is-the-thin-...
141•josephcsible•9h ago•173 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
232•limoce•4d ago•125 comments

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

https://openciv3.org/
904•klaussilveira•1d ago•276 comments

Selection rather than prediction

https://voratiq.com/blog/selection-rather-than-prediction/
31•languid-photic•4d ago•14 comments

Where did all the starships go?

https://www.datawrapper.de/blog/science-fiction-decline
148•speckx•4d ago•233 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
146•videotopia•4d ago•48 comments

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

https://github.com/valdanylchuk/breezydemo
303•isitcontent•1d ago•39 comments
Open in hackernews

Traintrackr – Live LED Maps

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

Comments

tobinfekkes•2w 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•2w 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•2w ago
which display is that? can you link it? sounds cool
KaiserPro•2w 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•2w 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•2w 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•2w 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•2w ago
Traksy is much better on mobile, thanks for shout!
bongani123•2w ago
Ohky
sschueller•2w ago
Shameless self promotion. I make these: https://www.stationdisplay.com/
rooster212•2w 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•2w 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•2w 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•2w 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•2w 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•2w ago
Wish it included the overground!
iamflimflam1•2w ago
The blog is a much more interesting read than the product site: https://blog.traintrackr.io
netsharc•2w 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•2w 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•2w ago
I put the NYC one in the office. It’s a good conversation starter and mildly mesmerizing.
enjrolas•2w ago
ayyyyy great to see someone from my local hacking community on the front page!
richardhawthorn•2w 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•2w 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•2w ago
Build a BART- CalTrain version and make bank!!
tuukkah•2w ago
Here's BART: https://www.traintrackr.co.uk/product/bart3
afandian•2w ago
Curious why you went with a matrix over WS2812 or similar. That PCB looks like it was painful to route!
richardhawthorn•2w 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•2w 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•2w 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•2w 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