RepRapMicron

https://private-user-images.githubusercontent.com/4644768/436892773-59e6d080-767b-4553-bd26-09339e65fa82.png?jwt=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.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.JOthUX4YiLUcAzf2NtjSVi-yPagPFFNWpBLmThaSvgU
The µRepRap is a 3D printer designed to achieve micron-scale fabrication using common materials, with the goal of advancing microelectronics and MEMS technology. It aims to replicate the capabilities of desktop fabrication on a smaller scale, enabling inexpensive and rapidly-evolving equipment for biological sciences and microelectronics.

Someone behind the software

https://karrisaarinen.com/static/linear-assets/081de7ffce667bb13cb63d8b2a1d312e19d747ea1d3818af2c5cc1e5a9445e21.webp
Good products are shaped by the people who make them, reflecting their experience and perspective. Without a shared understanding and unified point of view, software can become a collection of features without character or soul.

The Intel 8087 chip: floating-point addition and subtraction

https://static.righto.com/images/8087-fadd/8087-datapath-zoom-diagram-w600.jpg
The Intel 8087 chip introduced in 1980 significantly improved floating-point operations, with a speedup of almost 100 times over the 8086 processor. The microcode implementation of addition and subtraction involves complex logic to handle special cases such as infinities, zeros, and Not-a-Number values.

Java sealed classes and exhaustive pattern matching

Java 17 introduced sealed classes to explicitly list allowed sub-types, enabling exhaustiveness checking and compile-time safety guarantees. However, adding a new sub-type can break consumers of the code unless everything is recompiled together.

Sigsaly: Churchill's top secret hotline to the President

https://www.iwm.org.uk/sites/default/files/styles/responsive_w480/public/2022-11/large_000000_4.jpg.webp?itok=eQCn5uT7
Churchill War Rooms housed a top-secret transatlantic telephone system called SIGSALY, used by Churchill and Roosevelt to communicate securely during WWII. The system allowed for private conversations across the Atlantic Ocean, with 12 terminals installed worldwide, including one in London's Selfridges department store.
https://www.niemanlab.org/images/Meta-stock-image-315x177.jpg
Meta revised its terms of service for business accounts after criticism, removing the word "train" but still allowing broad scraping of websites. The new terms will go into effect on October 30 and have raised concerns among media organizations about potential abuse of power.

DeepSeek search and fetch – $0.75 per 1000 successful requests

https://cdn.deepseek.com/official_account.jpg
The Search API and Fetch API provide access to live web content, allowing agents and RAG applications to search for web pages using a query. Both APIs use the same bearer authentication as the DeepSeek API and return raw JSON results.

Show HN: The Zelda timeline to catch up before the Ocarina of Time remake

https://legendofhyrule.com/opengraph-image?a05cedcc808b59be
The Legend of Zelda series spans multiple timelines, with various eras and games connected by a shared history. The timeline branches into different paths after Ocarina of Time, including the child, adult, and fallen-hero eras.

macOS 15.8.2 Breaks OpenGL

Security verification in progress. Please wait while we verify your browser to protect against automated access.

Open MicroManipulator – A sub-micrometer 3D motion control plattform

https://raw.githubusercontent.com/0x23/MicroManipulatorStepper/main/images/overview.gif
This project is an open-source, low-cost motorized XYZ Micro-Manipulator with submicron precision for applications like optical alignment and microscopy. It can be controlled via G-Code commands over a USB serial interface.

Mitos editor is a fork of Helix

https://mitos.computer/docs/screenshots/autocomplete.png
Mitos is a batteries-included modal text editor built around selections, with multi-cursor, tree-sitter syntax awareness, and built-in language tooling. Select text, then apply an operation. Use multiple selections to edit several locations at once.

Beyond Tetris: The Other Games of Alexey Pajitnov [video]

Parser Combinators

https://t3.at/assets/2026-04-16-parser-combinators/1.png
The author explains parser combinators as a way to parse structured data from unstructured text, using functions that combine and transform parsers. They demonstrate three fundamental combinator functions: pSeq (sequence), pMap (map), and pRepeat (repeat).

How the Elizabeth Holmes documentary “You Can See Everything” is deceiving

https://substackcdn.com/image/fetch/$s_!KF3C!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Fc7d83514-b59e-49ee-867d-b0273db2251d_1456x906.webp
The documentary "You Can See Everything" masterfully manipulates viewers' emotions, forcing them to confront how much of their opinion of Elizabeth Holmes comes from the story's narrative rather than facts. The film expertly uses camera angles, editing, and framing to create a visceral experience that challenges viewers' perceptions and biases.

The Electronic Disturbance Theater and Electronic Civil Disobedience (1998)

https://www.thing.net/~rdom/ecd/newlogo.GIF
The Electronic Disturbance Theater is a group of cyber activists and artists promoting Electronic Civil Disobedience, using tactics like virtual blockades and sit-ins to resist governments. They have successfully blocked websites with their Flood Net device, but the Mexican government has also taken countermeasures against them.

Will it be a golden age or a dark age for mathematics (and science)?

The author discusses the potential benefits and risks of large language models (LLMs) in mathematics, highlighting their ability to generate proofs but also concerns about intellectual property, transparency, and the impact on human creativity.

I Electrified My Push Scooter with a Power Drill

https://eddieabbondanz.io/post/shop/drill-powered-scooter/images/1.jpg
The author converted their Razor A5 Lux scooter to electric using a Hercules cordless drill, 3D printing, and various parts. The result is a functional but rough-around-the-edges e-scooter that they enjoy riding at autocross events.

Bleached corals thrive within days when touching healthy neighbour

https://media.nature.com/lw767/magazine-assets/d41586-026-03266-x/d41586-026-03266-x_53851620.gif
Scientists have restored bleached coral in a lab by touching it to healthy fragments, giving hope for reversing widespread decline. This process allows the coral to regain its color and nutrients through symbiotic algae transfer.

Voyage of the Paper Canoe: 2500 Miles from Quebec to the Gulf of Mexico, 1874-5

http://www.ibiblio.org/eldritch/nhb/paperc/images/cover.jpg
Author Nathaniel H. Bishop embarked on a 2500-mile journey from Quebec to the Gulf of Mexico in a paper canoe, completing it over two years with minimal difficulties and encountering various people along the way. The author's book documents his experiences and appreciation for Southern hospitality during this remarkable voyage.

Teal – A statically-typed dialect of Lua

Teal is a statically-typed Lua dialect with type annotations, aiming to fill the niche of TypeScript in JavaScript. It's implemented as a compiler and has various tools and integrations for building projects.

Show HN: Sphinx – A hook that quizzes you on your AI's code before shipping

Sphinx is a Git hook that asks questions about code before shipping, built for minimal tokens and compatible with various coding agents. It helps reviewers understand changes by asking questions when things go wrong or succeed.

The Brain Sandwich

https://terriblesoftware.org/wp-content/uploads/2026/10/cHJpdmF0ZS9sci9pbWFnZXMvd2Vic2l0ZS8yMDIyLTA1L2lzMTk5NzYtaW1hZ2Uta3d2eWVzNXYuanBn.webp
The engineer discussed the "Brain Sandwich" framework with Emily, which balances AI usage with maintaining engineering skills. The framework involves understanding a project before delegating to AI and reviewing the results afterwards to ensure quality and relevance.

Hatching (Heraldry)

https://thumb.wikimedia.org/wikipedia/commons/thumb/1/16/Wappen_Kreis_Minden-L%C3%BCbbecke_%28sw%29.jpg/250px-Wappen_Kreis_Minden-L%C3%BCbbecke_%28sw%29.jpg?utm_source=en.wikipedia.org&utm_campaign=parser&utm_content=thumbnail
Hatching is a system for representing heraldic armory using dots and lines, developed in the 17th century by Silvester Petra Sancta and Marcus Vulson de la Colombière. The technique was used to denote tinctures on copperplate engravings, which were more suitable than woodcuts for this purpose.

Namecheap just seized and disabled all my domains

To continue, log in to your Reddit account or use your developer tokenIf you think you've been blocked by mistake, file a ticket below and we'll look into it.

Dam removals are bringing fish back across the northeastern United States

https://th-thumbnailer.cdn-si-edu.com/C1_G3dT49qFx2ZLre1uVbNFy2h8=/1000x750/filters:no_upscale():focal(1200x800:1201x801)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/16/00/1600753a-4935-46f8-b80a-87852b71eb12/header-little-dams.jpg
A dam removal movement in the US has led to over 2,500 miles of waterways being reconnected since 2024, with many more dams expected to be removed. The effort aims to restore habitats for fish species such as salmon and alewives that were previously blocked by dams.

Pele – Mermaid diagrams as themeable SVG

https://pele.run/social.png
Pele is a library that renders Mermaid diagrams to SVG with customizable CSS variables. It's used to create flowcharts and other diagrams, rendering them as SVG elements in the browser.

Lean now ships with verified kernels

https://leodemoura.github.io/static/images/leo.jpg
Lean's AI agents have improved the proof checker kernel, adding new kernels and tools for rechecking Lean developments. The latest version includes four verified kernels: nanoda, lean4lean, con-leche, and con-ron.

Regex visualized as 3D marble run

https://www.regexmarblerun.com/og.png
Type a regex and a string, then watch a marble run the match. See backtracking happen, flags pile up, and catastrophic patterns flood the machine.

Chirp Pong – uses microphones and audio for networked game play

A two-player competitive Pong game is built using static HTML, with players sending audio noises via their phones' microphones to update the game state. The game features graphical and gameplay twists, such as power-ups, obstacles, and a dynamic court that reacts to player inputs.

A History of Curves and Surfaces in Computer Aided Geometric Design [pdf]

The development of Computer Aided Geometric Design (CAGD) emerged from various fields, including shipbuilding, aircraft design, and computer graphics, with key milestones such as the introduction of numerical control in the 1950s and the first interactive graphics system by Sutherland in 1963. CAGD eventually led to the creation of new techniques like B-splines, NURBS, and subdivision ...