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Open Source @Github

"I closed MPEG on 2 Jun '20 when I left because obscure forces had hijacked it."

https://leonardo.chiariglione.org/
70•eggspurt•1h ago•21 comments

New AI Coding Teammate: Gemini CLI GitHub Actions

https://blog.google/technology/developers/introducing-gemini-cli-github-actions/
28•michael-sumner•1h ago•11 comments

We replaced passwords with something worse

https://blog.danielh.cc/blog/passwords
384•max__dev•9h ago•304 comments

About AI

https://priver.dev/blog/ai/about-ai/
23•emil_priver•2h ago•8 comments

Cracking the Vault: How we found zero-day flaws in HashiCorp Vault

https://cyata.ai/blog/cracking-the-vault-how-we-found-zero-day-flaws-in-authentication-identity-and-authorization-in-hashicorp-vault/
113•nihsy•4h ago•45 comments

Running GPT-OSS-120B at 500 tokens per second on Nvidia GPUs

https://www.baseten.co/blog/sota-performance-for-gpt-oss-120b-on-nvidia-gpus/
177•philipkiely•8h ago•95 comments

Claude Code IDE integration for Emacs

https://github.com/manzaltu/claude-code-ide.el
674•kgwgk•22h ago•229 comments

Gaybreaking

https://twitter.com/AlexReibman/status/1953229500973740058
25•miohtama•26m ago•6 comments

Debounce

https://developer.mozilla.org/en-US/docs/Glossary/Debounce
64•aanthonymax•2d ago•34 comments

Project Hyperion: Interstellar ship design competition

https://www.projecthyperion.org
283•codeulike•14h ago•211 comments

Rules by which a great empire may be reduced to a small one (1773)

https://founders.archives.gov/documents/Franklin/01-20-02-0213
182•freediver•11h ago•116 comments

A candidate giant planet imaged in the habitable zone of α Cen A

https://arxiv.org/abs/2508.03814
86•pinewurst•9h ago•28 comments

Show HN: Kitten TTS – 25MB CPU-Only, Open-Source TTS Model

https://github.com/KittenML/KittenTTS
867•divamgupta•1d ago•333 comments

Children's movie leads art historian to long-lost Hungarian masterpiece (2014)

https://www.theguardian.com/world/2014/nov/27/stuart-little-art-historian-long-lost-hungarian-masterpiece
10•how-about-this•3d ago•0 comments

Litestar is worth a look

https://www.b-list.org/weblog/2025/aug/06/litestar/
289•todsacerdoti•15h ago•78 comments

Jules, our asynchronous coding agent

https://blog.google/technology/google-labs/jules-now-available/
301•meetpateltech•19h ago•199 comments

Writing a Rust GPU kernel driver: a brief introduction on how GPU drivers work

https://www.collabora.com/news-and-blog/blog/2025/08/06/writing-a-rust-gpu-kernel-driver-a-brief-introduction-on-how-gpu-drivers-work/
272•losgehts•19h ago•33 comments

Did Craigslist decimate newspapers? Legend meets reality

https://www.poynter.org/business-work/2025/did-craigslist-kill-newspapers-poynter-50/
18•zdw•3d ago•6 comments

Herbie detects inaccurate expressions and finds more accurate replacements

https://herbie.uwplse.org/
66•bwidlar•3d ago•6 comments

We'd be better off with 9-bit bytes

https://pavpanchekha.com/blog/9bit.html
156•luu•15h ago•274 comments

A fast, growable array with stable pointers in C

https://danielchasehooper.com/posts/segment_array/
197•ibobev•17h ago•72 comments

The Bluesky Dictionary

https://www.avibagla.com/blueskydictionary/
172•gaws•14h ago•51 comments

40 Years of the Amiga

https://www.goto10retro.com/p/40-years-of-the-amiga-from-commodore
55•rbanffy•3h ago•20 comments

What is the average length of a queue of cars? (2023)

https://e-dorigatti.github.io/math/2023/11/01/queue-length.html
24•alexmolas•3d ago•8 comments

Scientists have recreated the Universe's first molecule

https://www.sciencedaily.com/releases/2025/08/250803011840.htm
15•LAsteNERD•2d ago•8 comments

Automerge 3.0

https://automerge.org/blog/automerge-3/
322•surprisetalk•3d ago•29 comments

Mac history echoes in current Mac operating systems

http://tenfourfox.blogspot.com/2025/08/mac-history-echoes-in-mac-operating.html
120•classichasclass•8h ago•39 comments

Multics

https://www.multicians.org/multics.html
123•unleaded•18h ago•28 comments

Comptime.ts: compile-time expressions for TypeScript

https://comptime.js.org/
137•excalo•3d ago•29 comments

Breaking the sorting barrier for directed single-source shortest paths

https://www.quantamagazine.org/new-method-is-the-fastest-way-to-find-the-best-routes-20250806/
153•baruchel•20h ago•46 comments
Open in hackernews

Show HN: When is the next Caltrain? (minimal webapp)

https://erikschluntz.com/caltrain
39•eschluntz•19h ago
I was frustrated with the existing caltrain websites / apps, so I made a super minimalist one to answer the actual question I have: how long until the next train?

If you're in SF it grabs the next southbound trains, otherwise, the next northbound.

Comments

PaulHoule•17h ago
I am not in the area so I had to click on the thing to view all schedules, I would say it is super slick, I like it.
bkettle•16h ago
For me the “all schedules” link is just the schedule on the official Caltrain website (which I actually quite like)
lindig•17h ago
The public transport service in Hannover/Germany once had a screensaver that you could configure to show the next departure from your nearest station. I thought that was clever marketing. Today you probably could implement this as a web service.
FredPret•17h ago
Screensavers can / could ping an API?

That train schedule seems like a cool idea in and of itself though.

simoncion•16h ago
In the Windows 95 days (and probably in the Windows 2000 days, and maybe also today) "all" a screensaver was was an .exe renamed to -if memory serves- .scr.

There may have been some special interface that the program being run was expected to conform to so the screensaver subsystem would invoke it, but (IIRC) a screensaver could do anything an ordinary program could do. (That was the big reason for being cautious about where/who you got your screensavers from.)

npinsker•17h ago
Thanks, this'll be a nice little timesaver!
eschluntz•17h ago
Thanks :)
nilsbunger•17h ago
Very cool. Would be good if it also shows whether it's a local train or limited or express, and/or which stations it stops at.
eschluntz•17h ago
bullet trains should be displayed in red, but I haven't tested it yet at the right time and I've been too lazy to write tests with mocked time / gps :)
andreyk•17h ago
haha nice, the official caltrain schedule is a bit of a hassle to parse...
klinquist•15h ago
https://caltrain.live is pretty nice (I developed it, along with the Caltrain Companion iOS app)
ac29•13h ago
love the design, though at the moment the AI summary of a train that is "17 minutes late" is "10-15 minutes late"
aeternum•17h ago
Closest station: San Francisco

But there are two SF stations

eschluntz•17h ago
"22nd st" shows up separately
nektro•16h ago
app hard dies if it's unable to get your location. was really expecting the "full schedule" link to show an input box to pick a station
eschluntz•16h ago
How else m I going to geotarget you with ads? /s
mslate•16h ago
While cool, this does not incorporate real-time data, just the static schedule.

I've explored this--you need 511 API access to obtain real-time data, and to conceal your API key you need to stand up a web application.

Cool proof-of-concept, need to take it to the next level!

eschluntz•16h ago
I thought about this, but I've seen several times where the signs say that the train is running late, but it's actually there and leaves perfectly on time!

The schedule has been much more reliable since the electrification

aaronbrethorst•16h ago
For anyone interested in getting the aforementioned access, you can find the 511 request URL here: https://www.transit.land/feeds/f-sf~bay~area~rg~rt

GTFS-RT data isn't a lot of fun to work with directly, though, so I'd recommend that you use an intermediary like OneBusAway (OBA) to interpret the data and give you a nicer to use API.

You can find more about OBA here: https://onebusaway.org

and our GitHub organization is here: https://github.com/onebusaway

Our docker images repo has pretty good docs about running a server: https://github.com/OneBusAway/docker

And the SDKs can all be found here: https://developer.onebusaway.org/api/sdk

(n.b. I've been a volunteer on the project for years and am currently serving as the part time exec director of the nonprofit behind OBA.)

thot_experiment•16h ago
I have a command line app for this somewhere I wrote a few years back when I was commuting on Caltrain a lot, I should dig it up and publish it. It had some extra pathfinding/fuzzy search stuff. I almost always have my bike with me and I wanted to cover the edge cases where it's faster to bike to a nearby station to catch a bullet or where you can take a train the wrong direction a stop or two for the same purpose.

I wish there a maps app that would build entire itineraries taking into account that you have a bike with you, and ideally your average expected biking speed. It's so annoying to plan any sort of multi-transit itinerary in the bay, you always have to piece things together yourself or get stuck with some nonsense that takes 30% longer than it needs to.

Of course all of this could also be resolved if we had a sane transit system with short intervals.

xd1936•15h ago
Does Transit[1] not do this? It suggests routes including walking and biking when I input my destination...

1. https://transitapp.com/

thot_experiment•6h ago
Oh maybe, I don't really use a phone to look up directions but I'll download it just in case.
a2dam•16h ago
I've been looking into doing this as a Home Assistant integration so I can put it in a little dashboard by the door. Can you describe how you built this a bit more? It's exactly the kind of data that should be easy to grab, but isn't.
eschluntz•15h ago
https://github.com/eschluntz/eschluntz.github.io/blob/gh-pag...

copy and pasted into a spreadsheet from the website, then claude wrote a little script to convert it into js

<no commitment that this file will stay up to date, use at your own risk, etc etc>

rconti•16h ago
I like how simple and minimalist this is!

Another great similar solution is the Caltrain Companion iOS app. The main screen I use is "Arriving Trains" which uses your current location to tell you when the next trains arrive in each direction, how far along they are on their route, etc. The data is realtime.

redsh•13h ago
What was the prompt and how are you hosting it? :)