Claude Sonnet 5

679 marinesebastian 2026-06-30 18:29:28 UTC anthropic.com Llama Share 355

Claude Sonnet 5 is a more agentic AI model that can make plans, use tools, and run autonomously at a lower price than its predecessor. It's available across all plans and offers a safer and more efficient option for developers, with a lower rate of undesirable behaviors and improved performance on tasks like coding and knowledge work.

Claude Code is steganographically marking requests

1092 kirushik 2026-06-30 16:29:28 UTC thereallo.dev Llama Share 281

Developers give coding agents excessive access for productivity, but this also raises security concerns. A tool like Claude Code hides classification signals in system prompts, making it harder to trust its claims of transparency.

I ported Kubernetes to the browser

48 peterdemin 2026-06-30 20:49:28 UTC ngrok.com Llama Share 12

Sam Rose created Webernetes, a browser-based Kubernetes cluster, using LLMs to port 100,000 lines of code from Kubernetes. He reviewed and tested the code to ensure its correctness, and now invites others to use and contribute to the project.

Claude Science

275 lebovic 2026-06-30 17:29:28 UTC claude.com Llama Share 93

Claude Science is a public beta app that integrates AI with scientific computing, allowing users to run full analyses on their own infrastructure. It connects to 60+ scientific databases and domain-specific open models, and produces reproducible results with full provenance.

Nano Banana 2 Lite

234 minimaxir 2026-06-30 17:29:28 UTC deepmind.google Llama Share 86

Nano Banana 2 Lite generates and edits images faster and more efficiently, ideal for designers and creators. It provides high-quality images quickly, reducing waiting time and increasing creative flow.

I built a mmWave material classification radar (2025)

102 GL26 2026-06-30 18:29:28 UTC gauthier-lechevalier.com Llama Share 30

The user built a radar that can classify materials, specifically targeting asbestos detection, using a combination of material sciences, wave physics, and neural networks. Due to a lack of funding, the project was stopped after achieving a proof of concept, but the user gained valuable experience in embedded firmware programming, product design, and hardware startup development.

How does a pull-back car work? Illustrated teardown

28 Muhammad523 2026-06-30 20:29:28 UTC mechanical-pencil.com Llama Share 10

A toy car's wind-up mechanism uses a Spiral Spring and gears to store and release energy, allowing it to shoot forward at high speeds. The gear system provides a mechanical advantage, making it easier for kids to wind up the spring with modest force.

Set up your own DoH (DNS over HTTPS) service

46 Bender 2026-06-30 18:29:28 UTC nochan.net Full Share 18

Building a custom octocopter from scratch with no prior hardware experience

290 noleary 2026-06-30 09:29:28 UTC karolina.mgdubiel.com Llama Share 65

Chris von Csefalvay plans to train a drone to fly with reinforcement learning, focusing on 6 failure classes and simulating motor lag and loop latency. He's using PPO with parallel environments and an asymmetric actor-critic approach to prepare the drone for real-world crashes.

Matrix URIs, a URL syntax from Tim Berners-Lee that never shipped (1996)

30 napolux 2026-06-30 18:29:28 UTC w3.org Llama Share 20

Tim Berners-Lee discusses the use of semi-colons in URLs for matrix syntax and relative URLs. He proposes a syntax for pausing relative URLs with named parameter values and questions the significance of parameter order.

Knoppix

208 hoangvmpc 2026-06-30 13:29:28 UTC knopper.net Llama Share 88

KNOPPIX is a bootable Linux system on CD, DVD, or USB with automatic hardware detection and support for various devices. It can be used as a productive desktop system, educational tool, or rescue system without installing anything on a hard disk.

Memoirs of Extraordinary Popular Delusions and the Madness of Crowds (1852)

149 lstodd 2026-06-30 13:29:28 UTC gutenberg.org Llama Share 46

Charles Mackay's 1841 book "Memoirs of Extraordinary Popular Delusions" studies crowd psychology through historical examples of financial bubbles and mass hysteria. It remains influential in understanding economic speculation and predicting market crashes.

Open Source Low Tech

608 grep_it 2026-06-30 05:29:28 UTC opensourcelowtech.org Llama Share 121

Daniel Connell creates open source, license free technologies using recycled materials for global self-sufficiency. His designs include energy, food, water, and communication systems, with tutorials and a Facebook group for community support.

Reading the internals of Postgres: Database cluster, databases, and tables

26 buraksen 2026-06-30 18:29:28 UTC buraksen.dev Llama Share 0

The user is studying Postgres Internals and has been documenting their notes on database clusters, database objects, system catalogs, and storage layouts. They have explored how Postgres stores data in heap tables, uses TOAST tables for oversized values, and accesses data through line pointers and tuple headers.

RF hacking my cloud-controlled ceiling fan

16 sammycdubs 2026-06-30 19:29:28 UTC samwilkinson.io Llama Share 4

The user wanted to control their Dreo ceiling fan locally through Home Assistant, but it only had cloud-based smart home integration. They decoded the remote's RF commands using an RTL-SDR and recreated them with an ESP32 board.

Morbid: Debunking Modern Longevity Science

17 nabbed 2026-06-30 20:29:28 UTC newyorker.com Llama Share 9

Author Saul Newman argues that many reported centenarians are actually younger due to bad record-keeping. Healthy habits alone can't stop aging, and societal conditions play a larger role in determining life expectancy.

CERN bids farewell to the LHC and enters Long Shutdown 3

41 HelloUsername 2026-06-30 18:29:28 UTC home.cern Llama Share 6

The Large Hadron Collider has completed its final physics run and is undergoing a major maintenance and upgrade program, Long Shutdown 3, to prepare for the High-Luminosity LHC. The upgrade will increase the collider's luminosity by a factor of up to ten, enabling precision studies and potentially uncovering new phenomena.

I built a 10 inch mini rack from aluminium extrusions

33 louwrentius 2026-06-30 15:29:28 UTC louwrentius.com Llama Share 14

The user built a 10-inch mini rack from aluminium extrusions to tidy up their desk and house six 1L PCs for a virtualization project. They encountered some challenges, such as expensive shelves and power distribution units, but overall they are happy with the build and its improved cable management.

Tell HN: Installing Cursor on iOS irreversibly changes your privacy settings

166 zkldi 2026-06-30 19:29:28 UTC news.ycombinator.com Llama Share 23

User's account was changed to a less private setting after installing the Cursor iOS app, and support cannot switch it back. The app's prompt for Cloud Agents changed the user's privacy setting without clear explanation.

The best thing that's ever happened for multiplayer games?

12 gafferongames 2026-06-30 20:29:28 UTC mas-bandwidth.com Llama Share 12

Glenn Fiedler, a game developer, discusses Amazon GameLift Servers' free network bandwidth for all instance types, eliminating unpredictable egress costs for game studios. This change makes AWS a more attractive option for hosting games, potentially disrupting the bare metal game server hosting industry.

Waveloop: What Fable left me

30 personjerry 2026-06-30 18:29:28 UTC neynt.ca Llama Share 7

The user created a music visualizer called Waveloop that reveals the harmonic and melodic structure of music, using a chromatic circle and spiral stacked histogram to show pitch class presence. The user analyzed the code behind Waveloop, noting its technical and literary writing style, and its ability to detect ukulele chords in real-time using a live mic mode.

A peek into Reddit's anti-spam internals

61 OuterVale 2026-06-30 16:29:28 UTC lyra.horse Llama Share 10

Reddit's spam filter system, which includes spamurai, uses various methods to detect and remove spam content. The system can see internal removal reasons, but only sitewide admins can view them.

SedonaDB 0.4: GPU-accelerated spatial joins

29 dr-jia-yu 2026-06-30 17:29:28 UTC sedona.apache.org Llama Share 4

SedonaDB 0.4 uses GPU-accelerated spatial joins on gaming GPUs, beating an H100 in some queries. RayBooster, an extension, brings ray tracing core acceleration into SedonaDB with a single monolithic index and universal predicate engine.

Tokyo has only two barley tea makers, we visited one to see how mugicha is made

10 zdw 2026-06-30 20:29:28 UTC soranews24.com Llama Share 2

Barley tea, or mugicha, is a Japanese drink made from roasted barley grains, not tea leaves. It's brewed from twice-roasted barley grains, sourced from domestic growers, and packaged in tea bags for a refreshing summer drink.

Zluda 6 release (run unmodified CUDA applications on non-Nvidia GPUs)

131 Tiberium 2026-06-30 11:29:28 UTC vosen.github.io Llama Share 12

ZLUDA has released version 6 with improved Windows support, PhysX pre-alpha, and texture support for Blender. Development is now a weekend project with less frequent updates.

Stroustrup's Rule (2024)

4 bmacho 2026-06-30 20:29:28 UTC buttondown.com Prefix Share 0

Just finished two weeks of workshops and am exhausted, so this one will be light. Logic for Programmers is on sale until the end of Chanukah! That's Jan 2nd if you're not Jewish. Get it for 40% off here. One of my favorite insights about syntax design appeared in a retrospective on C++1 by Bjarne Stroustrup: The blogger gives the example of option types in Rust. Originally, the idea ...

1.38 Millimeter Microcontroller

124 kristianpaul 2026-06-30 07:29:28 UTC ti.com Llama Share 85

The MSPM0C110x microcontrollers are part of the MSP highly-integrated ultra-low-power 32-bit MCU family based on the enhanced Arm Cortex-M0+ core platform operating at up to 24MHz frequency. They offer high-performance analog peripheral integration, support extended temperature ranges, and operate with supply voltages from 1.62V to 3.6V.

Counterexamples in type systems (2021)

39 bramadityaw 2026-06-30 15:29:28 UTC counterexamples.org Full Share 1

collated by Stephen Dolan, with thanks to Andrej Bauer, Leo White and Jeremy Yallop

A Fake Shell for Pangenomics

21 matt_d 2026-06-30 18:29:28 UTC cs.cornell.edu Llama Share 1

The author created a "fake shell" called Flash to speed up pangenomics workflows by opportunistically switching to faster implementations and avoiding I/O. Flash translates shell scripts into an instruction-based IR, allowing for optimizations and performance improvements.

6 years and 360 patches to clean all instances of strnpy out of the Linux kernel

52 ingve 2026-06-30 07:29:28 UTC smist08.wordpress.com Llama Share 33

The C string library is compact and fast but prone to buffer overrun errors if not used carefully. Linux kernel has fixed string usage issues and improved the string library's API to prevent security weaknesses.