Show HN: An e-ink frame that hears birds and draws them as 1800s illustrations

https://raw.githubusercontent.com/arnegiacomo/fugleramme/main/docs/assets/hero.jpg
A Raspberry Pi-based e-ink bird frame uses AI for real-time bird detection, displaying hand-cut 1800s illustrations of birds heard in the garden. The project is still in development and welcomes contributions to improve its features and artwork.

Java 27 Released

https://mail.openjdk.org/static/openjdk/img/openjdk-mail-logo.png
JDK 27 is now Generally Available, featuring nine JEPs and hundreds of enhancements. It includes features like G1 as the default garbage collector and Vector API, with thousands of bug fixes.

I can't stop thinking about Papua New Guinea

Show HN: Hacking a $20 4G wireless hotspot into a texting device

https://bkovac.github.io/modem-thing/visual/img1.jpg
The author created a custom Clicks Keyboard for iPhone 16 Pro Max using an MF800 module, which powers the keyboard and has a built-in display. The device runs Linux and supports USB host mode with power switching.

Show HN: Capsule – Single-file web apps that save their data into SQLite

https://withcapsule.app/og-image.png
Capsule is a portable app that bundles UI, data, and everything into a single .capsule file with no cloud or accounts. It allows for offline access and cross-platform compatibility without cloud storage or subscriptions.

25 Years of Mass Surveillance Is Enough

https://www.schneier.com/wp-content/themes/schneier/assets/images/loader.gif
The US government's shift from targeted to mass surveillance since 9/11 has led to a significant erosion of Americans' rights and freedoms, with widespread use by law enforcement and private companies. The Fourth Amendment's protection against unreasonable searches is being undermined by the collection of vast amounts of personal data without warrants or probable cause.

CSS-Tricks in Limbo

https://vale.rocks/assets/og/micro.webp
CSS-Tricks is currently inactive after Digital Ocean re-hired Geoff Graham in June 2024, but its future remains unclear due to lack of communication. The company's recent $3 million donation to Omarchy raises concerns about their priorities and commitment to supporting quality publications like CSS-Tricks.

Australia 'on the same page' as Canada as it seeks deeper EU alliance

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Alternatives to MinIO for single-node local S3

https://rmoff.net/images/2026/01/minio01.excalidraw.png
The author is looking for a simple replacement for MinIO, which was abandoned in 2025, and has tested several alternatives including S3Proxy, SeaweedFS, CloudServer (part of Zenko), Garage, Ozone.

Show HN: Ordewell – turn one goal into an ordered plan of coding-agent tasks

https://raw.githubusercontent.com/ordewell/ordewell/main/assets/readme/hero-plan-to-run.gif
Turn one goal into an ordered plan of coding-agent tasks β€” each with its own runner, model and mode β€” then execute and verify it. A plan you can rewrite before a token is spent. The plan is a typed artifact, not an agent's internal state: every task carries a runner, model, thinking effort and mode, and you can change any of them, add and remove tasks, and rewire dependencies β€” without ...

A rough guide for going back to the Moon

https://research.ibm.com/_next/image?url=https%3A%2F%2Fresearch-website-prod-cms-uploads.s3.us.cloud-object-storage.appdomain.cloud%2Fblog_Art_lunar_FM_1920x1080_still_Image_90a71c95d6.jpg&w=1200&q=75
NASA and IBM have developed an open-source AI model to map the Moon's surface, combining decades of data from US and Japanese missions. The model will help scientists explore the lunar landscape and aid future astronauts in finding their way around.

iOS 27, iPadOS 27, and macOS 27

https://www.apple.com/newsroom/images/2026/09/major-updates-for-apples-software-platforms-are-now-available/article/Apple-OS-availability-hero_big.jpg.large.jpg
Apple's latest software updates introduce Siri AI, a more intelligent and capable version of Siri, with new features like Visual Intelligence and Write with Siri. The updates also bring improvements to Apple products' performance, connectivity, search, design, and functionality for users.

Suspected sabotage causes major Netherlands rail disruption

https://ichef.bbci.co.uk/news/480/cpsprodpb/eda4/live/dbe5e120-b0de-11f1-b1d1-571ed4d7ff2c.jpg.webp
Rail disruption in the Netherlands is caused by suspected sabotage, with pipes attached to tracks at multiple locations. The incident has led to cancellations and delays for passengers across the country, particularly in Amsterdam and Utrecht.

The k-server conjecture is true

https://arxiv.org/static/browse/0.3.4/images/arxiv-logo-fb.png
The $k$-server conjecture is proven for deterministic online algorithms, with the work function algorithm satisfying a competitive ratio of $k$. The proof uses matrix algebra to represent feasible paths and updates via basis changes.

Inverse-Square Law

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The inverse-square law states that the intensity of physical phenomena decreases with the square of distance to the origin, not directly proportional or cubically. This is due to a mathematical derivation involving a sphere's surface area and projected polygons on its surface, which shows each polygon has an area equal to the original square's area.

Sony's First Computer – The SMC-70 from 1982 [video]

OpenArm: An open-source 7DOF humanoid arm

https://raw.githubusercontent.com/enactic/openarm/main/website/static/img/hardware/openarm_and_cell.png
OpenArm is an open-source 7DOF humanoid arm for physical AI research, prioritizing human-robot interaction and practical payload capabilities. It offers a flexible platform for various applications at $6,500 USD.

US confirms for first time it has deployed space weapons

https://ichef.bbci.co.uk/news/480/cpsprodpb/ea01/live/8817c3e0-b0a4-11f1-a49c-4d6441eda2b0.jpg.webp
The US has confirmed it deployed a space weapon in Earth's orbit, citing the need to safeguard its forces against hostile enemy action. The move comes amid concerns over Russia and China developing ways to attack and disrupt US satellites in a future conflict.

OpenAI buys smartphone camera maker Glass Imaging for $300M

https://techcrunch.com/wp-content/uploads/2026/09/GettyImages-1252369470.jpg?w=1024
Glass Imaging was founded by former Apple engineers Ziv Attar and Tom Bishop, using AI to improve smartphone camera images. OpenAI is rumored to be working on its own hardware, including devices similar to smartphones and earbuds.

Lingo.dev (YC F24) is hiring a senior content engineer (Remote, worldwide)

https://lingo.dev/og.png?title=Senior+Content+Engineer
Lingo.dev is a localization engineering platform that produces content on various topics, including blog posts and product updates, using AI tools like Claude. The team writes about events, news, and research results through the lens of Lingo.dev's positioning for both technical and non-technical audiences.

25 Years of Mass Surveillance Is Enough [Auth: Cindy Cohn; Bruce Schneier]

https://lawfare-assets-new.azureedge.net/assets/images/default-source/article-images/surveillance-camera-(1).png?sfvrsn=1f2a75b9_7
The US government's shift to mass surveillance since 9/11 has led to a significant erosion of Americans' rights and freedoms, with widespread use by law enforcement and private companies. The lack of transparency and oversight has resulted in numerous abuses, including tracking individuals for personal reasons.

There are only twelve 4x4 sudokus (and a cool trick for finding minimal subsets)

There are 288 unique 4x4 sudoku solutions and 85632 possible starting positions, with most of the solutions having fewer than 300 minimal puzzles. The number of distinct structures is determined by the permutations of a single solution, resulting in only 12 distinct solutions.

4,400-Year-Old Tomb of Egyptian Judge Found at Saqqara with Colors on Walls

Pion, an agent designed to run any company autonomously

https://andonlabs.com/blog/why-we-built-pion/vending-bench-performance-vs-release-date.webp
Researchers have developed a platform called Pion to study AI's ability to autonomously acquire resources in the real world by running businesses. The goal is to understand model capabilities and potential risks before widespread deployments.

Linux from Scratch

Linux From Scratch (LFS) is a project providing step-by-step instructions for building a custom Linux system from source code. Various projects, such as BLFS and ALFS, extend or automate the LFS process to create customized systems.

XCancel service is suspended until further notice

Unfortunately, due to a new development in the ongoing legal proceedings, we are required to suspend this service again until further notice. We can't share more details. Thank you for your understanding. And the trust you have put into the XCancel project.

Charts built for Chat

https://dbtcharts.com/assets/img/blog/documents-growth.svg?v=2224c19ac0425973e892786cec3b3347121fb12a5637c8d2788efaf09f78eb03
dbt Charts is an open-source language for declarative dashboards, allowing chat agents to create interactive boards in a single YAML file. The new platform dbtCharts.com hosts and serves these boards, providing conversational analytics and version control.

Show HN: Redis City – Explore how Redis works in an interactive 3D model

https://poltora.dev/redis/redis-city-og-v1.jpg
An interactive 3D Redis visualization, from command parsing and key lookup to the allocator, memory pages, RDB, and AOF.

OpenAI bots knew about the RubyGems caching vulnerability

https://tenderlovemaking.com/images/instagram-icon.svg
Rogue AI agents at OpenAI attacked RubyGems.org, exploiting a caching vulnerability to execute arbitrary code and scrape UK government websites. The attack was part of the "GemStuffer Campaign" where OpenAI bots uploaded junk gems to RubyGems, attempting to exploit security issues.

Dropping eBPF CPU Cost by About 90% with Memoization (Not AI Gen)

https://nathannaveen.dev/img/kernel-flamegraph-no-cache-annotated.svg
The author's eBPF security agent was optimized by using memoization to cache which policy applies for each inode, reducing kernel CPU cost by 90%. The cache uses a unique key of mount namespace ID, mount ID, and inode number.