Pipelining in psql (PostgreSQL 18) (Score: 150+ in 15 hours)

Link: https://readhacker.news/s/6DqzE
Comments: https://readhacker.news/c/6DqzE

How I'm using Helix editor (Score: 151+ in 5 hours)

Link: https://readhacker.news/s/6DrLW
Comments: https://readhacker.news/c/6DrLW

Loko Scheme: bare metal optimizing Scheme compiler (❄️ Score: 151+ in 5 days)

Link: https://readhacker.news/s/6D75y
Comments: https://readhacker.news/c/6D75y

Addictive-like behavioural traits in pet dogs with extreme motivation for toys (Score: 150+ in 10 hours)

Link: https://readhacker.news/s/6DrR3
Comments: https://readhacker.news/c/6DrR3

Show HN: A Digital Twin of my coffee roaster that runs in the browser (❄️ Score: 150+ in 6 days)

Link: https://readhacker.news/s/6D4Ki
Comments: https://readhacker.news/c/6D4Ki

I built this website to host a data-driven model of my coffee sample roaster.
I realized after 20 or so batches on the machine that while the controls are intuitive (heat, fan, and drum speeds), the physics can be unintuitive. I wanted to use my historical roast data to create and tune a model that I could use to do roast planning, control, and to help me build my own intuition for roasting. This website lets you interact with my roaster in a virtual, risk-free setting!
The models are custom Machine Learning modules that honor roaster physics and bean physics (this is not GPT/transformer-based). Buncha math.
The models are trained on about a dozen real roasts. The default bean model is an Ethiopian Guji bean.
My next steps are to add other roasters and the ability to practice control/reference tracking.

Free software hasn't won (Score: 150+ in 5 hours)

Link: https://readhacker.news/s/6DsNg
Comments: https://readhacker.news/c/6DsNg

Ask HN: What are you working on? (October 2025) (Score: 150+ in 8 hours)

Link: https://readhacker.news/c/6DswW

What are you working on? Any new ideas that you're thinking about?

Show HN: I built a simple ambient sound app with no ads or subscriptions (Score: 154+ in 14 hours)

Link: https://readhacker.news/s/6DrCD
Comments: https://readhacker.news/c/6DrCD

I’ve always liked having background noise while working or falling asleep, but I got frustrated that most “white noise” or ambient sound apps are either paywalled, stuffed with ads, or try to upsell subscriptions for basic features.
So I made Ambi, a small iOS app with a clean interface and a set of freely available ambient sounds — rain, waves, wind, birds, that sort of thing. You can mix them, adjust volume levels, and just let it play all night or while you work. Everything works offline and there are no hidden catches.
It’s something I built for myself first, but I figured others might find it useful too.
Feedback, bugs, and suggestions are all welcome.
https://apps.apple.com/app/ambi-white-noise-sleep-sounds/id6...

Spyware maker NSO Group confirms acquisition by US investors (Score: 150+ in 1 day)

Link: https://readhacker.news/s/6DqEk
Comments: https://readhacker.news/c/6DqEk

Heroin addicts often seem normal (Score: 150+ in 1 day)

Link: https://readhacker.news/s/6DpVJ
Comments: https://readhacker.news/c/6DpVJ

Emacs agent-shell (powered by ACP) (Score: 150+ in 10 hours)

Link: https://readhacker.news/s/6DsBi
Comments: https://readhacker.news/c/6DsBi

Also: https://xenodium.com/agent-shell-0-5-improvements

Edge AI for Beginners (Score: 150+ in 11 hours)

Link: https://readhacker.news/s/6DsBN
Comments: https://readhacker.news/c/6DsBN

Show HN: Baby's first international landline (❄️ Score: 150+ in 4 days)

Link: https://readhacker.news/s/6Dc3k
Comments: https://readhacker.news/c/6Dc3k

Hi HN,
As a weekend project, I hacked together a physical phone, a Raspberry Pi running Asterisk and Twilio, to let toddlers safely make international calls.
I’ve documented the setup in this write-up and published the code + Ansible playbooks on GitHub so others can replicate it.
I built this so kids of expats can easily stay in touch with family on other continents.
Would love feedback from anyone who’s worked on something similar or tries building this themselves!
writeup: https://wip.tf/posts/telefonefix-building-babys-first-intern...
github repos:
- https://github.com/nbr23/ansible-role-telefonefix
- https://github.com/nbr23/allo-wed

Bird photographer of the year gives a lesson in planning and patience (❄️ Score: 150+ in 1 week)

Link: https://readhacker.news/s/6D2S2
Comments: https://readhacker.news/c/6D2S2

Three ways formally verified code can go wrong in practice (Score: 150+ in 1 day)

Link: https://readhacker.news/s/6DqH9
Comments: https://readhacker.news/c/6DqH9

Show HN: I made an esoteric programming language that's read like a spellbook (Score: 151+ in 1 day)

Link: https://readhacker.news/s/6DqDv
Comments: https://readhacker.news/c/6DqDv

i made an esoteric programming language which i call spellscript.
every program is a "spell" written in a "grimoire," and you have to use keywords like summon, enchant, inscribe, and conjure.
it's literally read like a spellbook because the syntax consists of all natural language, and newlines are optional. your code can now be an essay, like everybody wants!
for example, if you want to print something, you'd write:
`begin the grimoire. inscribe whispers of "hello, world!". close the grimoire.`
it has variables, dynamic typing, arrays, functions, conditionals, loops, string manipulation, array manipulation, type conversion, and user input, among other (listed in the docs!)
but why? i wanted to see how far you could push natural language syntax while still being parseable. most esolangs are intentionally obtuse (BF, Malbolge), but i wanted something that's weird but readable, like you're reading instructions from a spellbook, which makes it incredibly easy to read and understand. like an anti-esolang? hmm...
github: https://github.com/sirbread/spellscript
docs: https://github.com/sirbread/spellscript/blob/main/resources/...

Spotlight on pdfly, the Swiss Army knife for PDF files (Score: 155+ in 5 hours)

Link: https://readhacker.news/s/6Du35
Comments: https://readhacker.news/c/6Du35

Despite what's happening in the USA, renewables are winning globally (Score: 150+ in 12 hours)

Link: https://readhacker.news/s/6Dtnf
Comments: https://readhacker.news/c/6Dtnf

Modern Linux tools (Score: 153+ in 5 hours)

Link: https://readhacker.news/s/6Duan
Comments: https://readhacker.news/c/6Duan

After the AI boom: what might we be left with? (Score: 150+ in 20 hours)

Link: https://readhacker.news/s/6Dsse
Comments: https://readhacker.news/c/6Dsse