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Start all of your commands with a comma

https://rhodesmill.org/brandon/2009/commands-with-comma/
187•theblazehen•2d ago•54 comments

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

https://openciv3.org/
677•klaussilveira•14h ago•202 comments

The Waymo World Model

https://waymo.com/blog/2026/02/the-waymo-world-model-a-new-frontier-for-autonomous-driving-simula...
951•xnx•20h ago•552 comments

Jeffrey Snover: "Welcome to the Room"

https://www.jsnover.com/blog/2026/02/01/welcome-to-the-room/
25•kaonwarb•3d ago•20 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
124•matheusalmeida•2d ago•33 comments

Unseen Footage of Atari Battlezone Arcade Cabinet Production

https://arcadeblogger.com/2026/02/02/unseen-footage-of-atari-battlezone-cabinet-production/
61•videotopia•4d ago•2 comments

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

https://github.com/valdanylchuk/breezydemo
233•isitcontent•15h ago•25 comments

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

https://github.com/pydantic/monty
226•dmpetrov•15h ago•121 comments

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

https://vecti.com
332•vecti•17h ago•145 comments

Hackers (1995) Animated Experience

https://hackers-1995.vercel.app/
498•todsacerdoti•22h ago•243 comments

Sheldon Brown's Bicycle Technical Info

https://www.sheldonbrown.com/
383•ostacke•20h ago•96 comments

Vocal Guide – belt sing without killing yourself

https://jesperordrup.github.io/vocal-guide/
37•jesperordrup•5h ago•17 comments

Where did all the starships go?

https://www.datawrapper.de/blog/science-fiction-decline
20•speckx•3d ago•9 comments

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

https://github.com/microsoft/litebox
360•aktau•21h ago•183 comments

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

https://eljojo.github.io/rememory/
291•eljojo•17h ago•181 comments

An Update on Heroku

https://www.heroku.com/blog/an-update-on-heroku/
413•lstoll•21h ago•279 comments

ga68, the GNU Algol 68 Compiler – FOSDEM 2026 [video]

https://fosdem.org/2026/schedule/event/PEXRTN-ga68-intro/
5•matt_d•3d ago•1 comments

Was Benoit Mandelbrot a hedgehog or a fox?

https://arxiv.org/abs/2602.01122
20•bikenaga•3d ago•10 comments

PC Floppy Copy Protection: Vault Prolok

https://martypc.blogspot.com/2024/09/pc-floppy-copy-protection-vault-prolok.html
66•kmm•5d ago•9 comments

Dark Alley Mathematics

https://blog.szczepan.org/blog/three-points/
93•quibono•4d ago•22 comments

How to effectively write quality code with AI

https://heidenstedt.org/posts/2026/how-to-effectively-write-quality-code-with-ai/
258•i5heu•17h ago•199 comments

Delimited Continuations vs. Lwt for Threads

https://mirageos.org/blog/delimcc-vs-lwt
33•romes•4d ago•3 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...
37•gmays•10h ago•12 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/
1072•cdrnsf•1d ago•454 comments

Introducing the Developer Knowledge API and MCP Server

https://developers.googleblog.com/introducing-the-developer-knowledge-api-and-mcp-server/
60•gfortaine•12h ago•26 comments

Understanding Neural Network, Visually

https://visualrambling.space/neural-network/
291•surprisetalk•3d ago•43 comments

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

https://infisical.com/blog/devops-to-solutions-engineering
150•vmatsiiako•19h ago•71 comments

Why I Joined OpenAI

https://www.brendangregg.com/blog/2026-02-07/why-i-joined-openai.html
154•SerCe•10h ago•144 comments

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

https://github.com/phreda4/r3
73•phreda4•14h ago•14 comments

Learning from context is harder than we thought

https://hy.tencent.com/research/100025?langVersion=en
186•limoce•3d ago•102 comments
Open in hackernews

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

https://erikschluntz.com/caltrain
42•eschluntz•6mo 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•6mo 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•6mo ago
For me the “all schedules” link is just the schedule on the official Caltrain website (which I actually quite like)
lindig•6mo 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•6mo ago
Screensavers can / could ping an API?

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

simoncion•6mo 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•6mo ago
Thanks, this'll be a nice little timesaver!
eschluntz•6mo ago
Thanks :)
nilsbunger•6mo 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•6mo 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 :)
sentientslug•6mo ago
Looking at it now and the bullet has black text
andreyk•6mo ago
haha nice, the official caltrain schedule is a bit of a hassle to parse...
klinquist•6mo ago
https://caltrain.live is pretty nice (I developed it, along with the Caltrain Companion iOS app)
ac29•6mo 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•6mo ago
Closest station: San Francisco

But there are two SF stations

eschluntz•6mo ago
"22nd st" shows up separately
nektro•6mo 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•6mo ago
How else m I going to geotarget you with ads? /s
mslate•6mo 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•6mo 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•6mo 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•6mo 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•6mo 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•6mo ago
Oh maybe, I don't really use a phone to look up directions but I'll download it just in case.
a2dam•6mo 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•6mo 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•6mo 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•6mo ago
What was the prompt and how are you hosting it? :)