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Claude Code now supports Hooks

https://docs.anthropic.com/en/docs/claude-code/hooks
51•ramoz•53m ago•11 comments

Xfinity using WiFi signals in your house to detect motion

https://www.xfinity.com/support/articles/wifi-motion
231•bearsyankees•5h ago•163 comments

The new skill in AI is not prompting, it's context engineering

https://www.philschmid.de/context-engineering
325•robotswantdata•4h ago•189 comments

I write type-safe generic data structures in C

https://danielchasehooper.com/posts/typechecked-generic-c-data-structures/
216•todsacerdoti•7h ago•83 comments

There are no new ideas in AI only new datasets

https://blog.jxmo.io/p/there-are-no-new-ideas-in-ai-only
291•bilsbie•10h ago•154 comments

The hidden JTAG in a Qualcomm/Snapdragon device’s USB port

https://www.linaro.org/blog/hidden-jtag-qualcomm-snapdragon-usb/
112•denysvitali•6h ago•16 comments

Donkey Kong Country 2 and Open Bus

https://jsgroth.dev/blog/posts/dkc2-open-bus/
187•colejohnson66•9h ago•44 comments

Entropy of a Mixture

https://cgad.ski/blog/entropy-of-a-mixture.html
25•cgadski•3h ago•2 comments

The Original LZEXE (A.K.A. Kosinski) Compressor Source Code Has Been Released

https://clownacy.wordpress.com/2025/05/24/the-original-lzexe-a-k-a-kosinski-compressor-source-code-has-been-released/
50•elvis70•5h ago•3 comments

End of an Era

https://www.erasmatazz.com/personal/self/end-of-an-era.html
67•marcusestes•5h ago•16 comments

Jim Boddie codeveloped the first successful DSP at Bell Labs

https://spectrum.ieee.org/dsp-pioneer-jim-boddie
13•jnord•2h ago•0 comments

GPEmu: A GPU emulator for rapid, low-cost deep learning prototyping [pdf]

https://vldb.org/pvldb/vol18/p1919-wang.pdf
14•matt_d•2h ago•0 comments

Melbourne man discovers extensive model train network underneath house

https://www.sbs.com.au/news/article/i-was-shocked-melbourne-mans-unbelievable-find-after-buying-house/m4sksfer8
39•cfcfcf•1h ago•13 comments

Beneath the canopy: Pioneering satellite reveals rainforests' hidden worlds

https://www.bbc.co.uk/news/resources/idt-d7353b50-0fea-46ba-8495-ae9e25192cfe
4•ZeljkoS•2d ago•0 comments

Show HN: TokenDagger – A tokenizer faster than OpenAI's Tiktoken

https://github.com/M4THYOU/TokenDagger
244•matthewolfe•12h ago•66 comments

Price of rice in Japan falls below ¥4k per 5kg

https://www.japantimes.co.jp/news/2025/06/24/japan/japan-rice-price-falls-below-4000/
64•PaulHoule•5h ago•86 comments

They don't make 'em like that any more: Sony DTC-700 audio DAT player/recorder

https://kevinboone.me/dtc-700.html
71•naves•6h ago•60 comments

Creating fair dice from random objects

https://arstechnica.com/science/2025/05/your-next-gaming-dice-could-be-shaped-like-a-dragon-or-armadillo/
29•epipolar•2d ago•9 comments

People Keep Inventing Prolly Trees

https://www.dolthub.com/blog/2025-06-03-people-keep-inventing-prolly-trees/
15•lifty•2d ago•2 comments

Show HN: New Ensō – first public beta

https://untested.sonnet.io/notes/new-enso-first-public-beta/
212•rpastuszak•13h ago•81 comments

A CarFax for Used PCs; Hewlett Packard wants to give old laptops new life

https://spectrum.ieee.org/carmax-used-pcs
62•rubenbe•8h ago•65 comments

14.ai (YC W24) hiring founding engineers in SF to build a Zendesk alternative

https://14.ai/careers
1•michaelfester•7h ago

Ask HN: What Are You Working On? (June 2025)

355•david927•1d ago•1113 comments

The provenance memory model for C

https://gustedt.wordpress.com/2025/06/30/the-provenance-memory-model-for-c/
198•HexDecOctBin•15h ago•106 comments

Ask HN: What's the 2025 stack for a self-hosted photo library with local AI?

140•jamesxv7•6h ago•70 comments

The Plot of the Phantom, a text adventure that took 40 years to finish

https://scottandrew.com/blog/2025/06/you-can-now-play-plot-of-the-phantom-the-text-adventure-game/
174•SeenNotHeard•3d ago•34 comments

Jacobi Ellipsoid

https://en.wikipedia.org/wiki/Jacobi_ellipsoid
25•perihelions•2d ago•4 comments

New proof dramatically compresses space needed for computation

https://www.scientificamerican.com/article/new-proof-dramatically-compresses-space-needed-for-computation/
177•baruchel•3d ago•92 comments

Public Signal Backups Testing

https://community.signalusers.org/t/public-signal-backups-testing/69984
23•blendergeek•5h ago•2 comments

Show HN: We're two coffee nerds who built an AI app to track beans and recipes

https://beanbook.app
38•rokeyzhang•6h ago•24 comments
Open in hackernews

Show HN: Open-Source International Space Station Tracker ESP32/Arduino for $20

https://github.com/GuitarML/SpaceStationTracker
59•keyth72•3d ago
International Space Station Tracker on an ESP32 CYD (Cheap Yellow Display) costing $20. Live update over Wifi, touchscreen, backlight power management. Cheap and interesting classroom STEM project. Fully open source.

Comments

panki27•9h ago
Looks like a fun tinker project. Could be easily extended with a GPS receiver to show your location on the map.
calgoo•8h ago
A SDR could be cool too, and basically let it connect live to ISS when the GPS confirms its above. CPU and memory might be an issue, but getting some 145Mhz / 437Mhz SDR and an external antenna jack on the board could be a cool way of letting the device listen in when the ISS is above.
keyth72•7h ago
Definitely alot of directions you could go with it, looking forward to seeing what people do with the code!
matteason•8h ago
Really neat! If you're interested in adding clouds to your basemap I built a service [0] which generates free, almost-live cloudmaps (with alpha channel or precomposited onto a Blue Marble image) as part of my own ISS tracker project

[0] https://github.com/matteason/live-cloud-maps

keyth72•7h ago
That's really cool! Starred so I can find it later, might be challenging putting it on the esp32 but if there's an easy way to downsize the images then it should be do-able. Thanks!
fillskills•7h ago
Wow, this is pretty legendary work: https://iss.matteason.co.uk/
consumer451•8h ago
This is a complete tangent, but a photographer recently captured what is likely the all-time best shot of the ISS.

https://old.reddit.com/r/spaceporn/comments/1lfgtiw/on_sunda...

keyth72•7h ago
WOW that is a cool shot, thanks for sharing!
potsii•7h ago
Another variant of the generic:

"Read a REST endpoint via HTTP and draw it on a display with LVGL"

But also funny because OP used two MCUs, when a single ESP32 could do all of this.

keyth72•7h ago
Yup, that's all it is! Really simple beginner project, with room to grow on the hardware.
endofreach•7h ago
you seem to be (someone who wants to appear) more experienced. maybe you could give constructive feedback rather than ridiculing. what a negative comment just to feel better about yourself. sad.
keyth72•7h ago
No need to perpetuate any negativity, I can take it ;) constructive feedback is appreciated though!
SiempreViernes•7h ago
Aaaw, this only displays the position on a screen :( I was hoping for the cool version where a small arm is physically pointing at the ISS.
keyth72•7h ago
I saw that one! Very impressive project with 3D printed parts. Here is that project for anyone interested: https://projecthub.arduino.cc/alex_chang/satellite-tracker-2...
keyth72•7h ago
Or maybe this is the one you meant: https://www.reddit.com/r/arduino/comments/11pxh3h/iss_tracke...
coffeecoders•6h ago
This looks like a fun project. Any reason for using resistive touch model?
keyth72•5h ago
It's what I learned on, and there seems to be more info available out there about it (for now), but capacitive touch CYD would probably be better/more responsive. The resistive touch option seems to be a few dollars cheaper in general on Amazon.