X5.1 solar flare, G4 geomagnetic storm watch

https://www.spaceweatherlive.com/images/news/593-header.jpg
A strong X5.1 solar flare and coronal mass ejection are heading towards Earth, prompting a G4 geomagnetic storm watch. The CME may cause aurora visibility in northern France, Germany, and the US as far south as Nevada and Arkansas.

I didn't reverse-engineer the protocol for my blood pressure monitor in 24 hours

https://james.belchamber.com/articles/blood-pressure-monitor-reverse-engineering/images/header.jpg
The user had their blood pressure tested at a pharmacy using a Microlife WatchBP O3 device and then attempted to reverse-engineer the data using Wireshark and Python. They successfully extracted some data but were unable to fully understand the protocol and had to return the device before completing their analysis.

The terminal of the future

https://jyn.dev/assets/jupyter%20bubble%20plot.png
The user discusses redesigning the terminal to improve its functionality and user experience, citing limitations of current terminal emulators and proposing a new design that integrates features like Jupyter Notebook and tmux. The user outlines a step-by-step approach to implementing this new design, starting with transactional semantics for the terminal, decoupling persistence from tmux and ...

A catalog of side effects

Compilers use various methods to track and represent the effects of IR instructions, including bitsets and heap range lists, to enable optimizations such as dead code elimination and instruction reordering. Different compilers, such as Cinder, JavaScriptCore, and Simple, use different approaches to represent effects, with some using bitsets and others using int ranges or abstract heaps.

Four strange places to see London's Roman Wall

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The City of London's Roman Wall can be seen in various unusual locations, including a Tube platform, a hotel car port, a cafe, and a car park. These spots offer unique views of the ancient wall, often juxtaposed with modern surroundings.

My fan worked fine, so I gave it WiFi

https://ellis.codes/blog/my-fan-worked-fine-so-i-gave-it-wi-fi/modded-fan_hu_c7422fe5b18b5371.webp
The user modified a Vornado 633DC fan to control it remotely over WiFi by adding a custom PCB with an ESP32 module, a digital potentiometer, and a rotary encoder. The modification is fully reversible and requires no permanent alteration to the original fan, allowing for both remote control and manual interface.

Scaling HNSWs

The author shares their experience and findings on implementing HNSWs (Hierarchical Navigable Small Worlds) in Redis, a high-performance in-memory data store, and discusses the challenges and optimizations they encountered to make HNSWs fast enough for Redis. The author also explores the potential of HNSWs as a data structure, their limitations, and the benefits of exposing them directly to ...

Pikaday: A friendly guide to front-end date pickers

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The guide suggests using native date and time inputs for user-friendly interfaces, as they are easy to implement and handle many important details. Complex UI can lead to errors and abandoned forms, so it's best to keep it simple for successful form submissions.

Adk-go: code-first Go toolkit for building, evaluating, and deploying AI agents

https://raw.githubusercontent.com/google/adk-python/main/assets/agent-development-kit.png
The Agent Development Kit (ADK) is a flexible framework for creating AI agents, optimized for Gemini but model-agnostic and deployment-agnostic. It's ideal for cloud-native agent applications, offering code-first development and easy deployment.

The history of Casio watches

You don't have permission to access "http://www.casio.com/us/watches/50th/Heritage/1970s/" on this server.

Meticulous (YC S21) is hiring to redefine software dev

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Meticulous accelerates software development with autonomous testing technology, attracting top talent and investors. The company aims to unlock code generation potential by integrating its technology into the development process.

Collaboration sucks

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The author argues that excessive collaboration can hinder a company's progress, eroding motivation and effectiveness. They propose minimizing collaboration by designating a single driver for each task and seeking feedback only after completion.

Xortran - A PDP-11 Neural Network With Backpropagation in Fortran IV

https://opengraph.githubassets.com/3789a2f0e533f817ce7f268c277a11ed1491d7862d338f6a1bae115ee4634852/dbrll/Xortran
XORTRAN is a 1970s FORTRAN IV implementation of a multilayer perceptron neural network that converges towards XOR outputs. It runs on a PDP-11/34A with 32 kilobytes of memory and an FP11 floating-point processor.

Cache-friendly, low-memory Lanczos algorithm in Rust

https://lukefleed.xyz/assets/lanczos/tradeoff_arcs500k_rho3_memory.png
The standard lanczos method for computing matrix functions has a brutal memory requirement. the full orthogonal method (fom) enforces that the residuals are always krylov subspace based on xkmathbfx_k - yk=f(hk)f (hkk) this guarantees that any new vector is automatically orthogonian to all earlier vectors, beyond vj+1

iPhone Pocket

https://www.apple.com/newsroom/images/2025/11/introducing-iphone-pocket-a-beautiful-and-wearable-carrier-for-iphone/article/Apple-iPhone-Pocket-and-ISSEY-MIYAKE-hero_big.jpg.large.jpg
Apple and ISSEY MIYAKE unveiled iPhone Pocket, a 3D-knitted accessory for iPhone. It features a ribbed open structure and is available in various colors, priced at $149.95 and $229.95.

Agentic pelican on a bicycle

https://www.robert-glaser.de/content/images/size/w1200/2025/11/pelican-riding-a-bicycle.jpg
The user ran an experiment where AI models iteratively generated and improved an SVG of a pelican riding a bicycle, with some models producing surprisingly realistic and coherent results. The results suggest that the agentic approach to AI generation can produce different and sometimes better results than zero-shot generation, but it also highlights the importance of aesthetic judgment and ...

Étude in C minor (2020)

https://zserge.com/images/etude-in-c-digital-sound.png
The user explained how to create simple music with C code by generating digital sound waves and playing them through the terminal using utilities like aplay or SoX. They demonstrated various techniques for creating oscillating sounds, applying effects like low-pass filters and delay lines, and even showed how to play melodies from text notation.

The R47: A new physical RPN calculator

https://cdn.prod.website-files.com/5e3bcb8b5549c74b8b60a3c8/685dd69aea55fd06109daa34_adv_amazon_mute_r47_04_box.jpg
The R47 is a powerful RPN calculator with a refined software set, built from a community-driven project inspired by HP calculators. It features a high-resolution display, stainless steel case, and precise decimal arithmetic.

A modern 35mm film scanner for home

https://framerusercontent.com/images/w5Fcd9QS59SlyiWzMrAxpDCIPM.png?width=2292&height=1854
Knokke is a modern 35 mm film scanner with high-quality and fast scanning capabilities. It runs on Korova, a native Linux, macOS, and Windows application, for a plug-and-play workflow.

The Department of War just shot the accountants and opted for speed

https://i0.wp.com/steveblank.com/wp-content/uploads/2025/11/From-Need-to-Production.jpg?resize=468%2C205&ssl=1
The US Department of War has adopted Lean Methodology and pivoted from optimizing cost and performance to delivering advanced weapons at speed. This transformation aims to deliver more, better, and faster capabilities, leveraging commercial technology and innovation.

Show HN: Cactoide – Federated RSVP Platform

Cactoide is a decentralized, open-source event RSVP platform for creating and sharing events without registration. It allows instant event creation, unique URLs, and RSVP tracking across a network of instances.

Array-programming the Mandelbrot set

https://jcmorrow.com/mandelbrot.gif
User revisited the Mandelbrot set in J and translated it to Uiua, an array language with stack-based features. Uiua's immediacy and automatic output display make it a powerful tool for visual arts projects.

We ran over 600 image generations to compare AI image models

https://latenitesoft.com/blog/wp-content/plugins/model-comparison-widget/images/landscape.jpg
LateNiteSoft compared 600 image generations from OpenAI, Gemini, and Seedream models for various photo edits. They found that OpenAI excels at fully transformative filters and creative applications, while Gemini is better for realistic edits.

PBM Drug Pricing Distortion Report

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Researchers examined the list prices of medicines set by PBM-affiliated drug companies and standalone drug companies to assess their incentives and behaviors in the US drug pricing system. The study found that PBM-owned drug companies, such as Quallent Pharmaceuticals, tend to set higher average wholesale prices (AWPs) for their products, which can result in higher costs for end payers and ...

How I fell in love with Erlang

https://img.youtube.com/vi/xrIjfIjssLE/0.jpg
The author's journey with programming began at age 8 with Commodore-64 and BASIC, but it wasn't until university that he started to understand programming concepts. He discovered Erlang, a functional programming language, which changed his approach to building systems.

Dollar Driven

https://justingarrison.com/img/dollar-driven-banner.png
Company leadership say they’re data driven, and they may even believe it. But the only data that actually matters is money. Every other data you collect, visualize, and optimize is a proxy for money. If you’re lucky, the data will be a direct translation to money, but most likely you’ll have to go through two or more exchanges (managers) before you can get the real value. Any data that’s ...

Vertical integration is the only thing that matters

The author believes vertical integration is crucial for developer tooling, enabling seamless workflows across different tools in a stack. However, this is hindered by the inability of startups to vertically integrate their offerings due to various reasons including coordination issues, software freedom ideologies, and high migration costs.

Laptops adorned with creative stickers

https://stickertop.art/content/images/2025/11/samurai-cyberdeck-2.jpg
Welcome to stickertop.art Discover a unique collection of laptops adorned with creative stickers from around the world. This project celebrates the art and culture of laptop personalization each laptop tells a story through its stickers and gives us a glimpse of the personality of the owners.

Terminal Latency on Windows (2024)

https://chadaustin.me/wp-uploads/mintty_right_click.png
The user compared various Windows terminals including MinTTY, Alacritty, WezTerm, and Windows Terminal, finding that MinTTY has the best latency and throughput. MinTTY also supports all major ANSI character attributes and has a better default palette, making it a great choice for users who value performance and functionality.

Firefox expands fingerprint protections

https://blog.mozilla.org/wp-content/blogs.dir/278/files/2025/11/image-32-1024x633.png
Firefox 145 introduces major privacy upgrades to combat browser fingerprinting, reducing trackable users by half. New defenses work on multiple layers, building on Firefox's existing privacy features to protect users without disrupting web usability.