Top stories

$96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor
ZacnyLos about 4 hours ago

$96 3D-printed rocket that recalculates its mid-air trajectory using a $5 sensor

This article describes the development of a MANPADS (Man-Portable Air Defense System) System Launcher and Rocket, a critical component for defending against airborne threats. The project aims to create a reliable and effective system to protect against various aerial targets.

github.com
196 121
Summary
A Visual Introduction to Machine Learning (2015)
vismit2000 about 3 hours ago

A Visual Introduction to Machine Learning (2015)

This article provides a visual introduction to machine learning, explaining the core concepts of supervised learning, training data, and model predictions. It uses a simple example of predicting house prices to illustrate these fundamental machine learning principles.

r2d3.us
97 4
Summary
tclancy about 1 hour ago

A Theory of the World as run by large adult children

The article discusses the friendship and creative partnership between Harold and George, the creators of the popular comic book series 'Captain Underpants'. It explores their collaborative process, the success of their work, and the lasting impact of their creation on children's literature.

tomclancy.info
19 3
Summary
mapldx about 2 hours ago

Show HN: Signet – Autonomous wildfire tracking from satellite and weather data

I built Signet in Go to see if an autonomous system could handle the wildfire monitoring loop that people currently run by hand - checking satellite feeds, pulling up weather, looking at terrain and fuels, deciding whether a detection is actually a fire worth tracking.

All the data already exists: NASA FIRMS thermal detections, GOES-19 imagery, NWS forecasts, LANDFIRE fuel models, USGS elevation, Census population data, OpenStreetMap. The problem is it arrives from different sources on different cadences in different formats.

Most of the system is deterministic plumbing - ingestion, spatial indexing, deduplication. I use Gemini to orchestrate 23 tools across weather, terrain, imagery, and incident tracking for the part where clean rules break down: deciding which weak detections are worth investigating, what context to pull next, and how to synthesize noisy evidence into a structured assessment.

It also records time-bounded predictions and scores them against later data, so the system is making falsifiable claims instead of narrating after the fact. The current prediction metrics are visible on the site even though the sample is still small.

It's already opening incidents from raw satellite detections and matching some to official NIFC reporting. But false positives, detection latency, and incident matching can still be rough.

I'd especially welcome criticism on: where should this be more deterministic instead of LLM-driven? And is this kind of autonomous monitoring actually useful, or just noisier than doing it by hand?

signet.watch
23 2
Summary
hnlyman about 2 hours ago

Generating All 32-Bit Primes (Part I)

The article discusses the development of the Prime 32 microcomputer, a 32-bit computer system designed in the 1980s. It provides an overview of the system's architecture, features, and historical context within the evolution of personal computing.

hnlyman.github.io
24 4
Summary
cdrnsf about 10 hours ago

Rack-mount hydroponics

The article discusses the benefits of using a rack-mount hydroponics system, including its efficient use of space, customizability, and ease of maintenance. It provides an overview of the components and setup required to create a compact and organized hydroponic growing system.

sa.lj.am
224 52
Summary
100 hour gap between a vibecoded prototype and a working product
kiwieater about 2 hours ago

100 hour gap between a vibecoded prototype and a working product

kanfa.macbudkowski.com
11 5
fred1268 about 1 hour ago

I'm 60 years old. Claude Code killed a passion

I stumble upon a post from shannoncc called "I'm 60 years old. Claude Code has re-ignited a passion", and it made me think. I am also (almost) 60, but AI just killed the passion. I remember all the pre-AI days, where I was enjoying coding during the day, the evening, the weekends and the vacations. This is no more, while others have their "passion re-ignited".

I would argue it depends on what you enjoy: the journey or the destination. I have always enjoyed the journey, I think people having a blast nowadays are enjoying the destination. AI gave us more destinations, but less journey. It is not worse or better, just different.

88 56
ingve about 6 hours ago

The Appalling Stupidity of Spotify's AI DJ

The article criticizes Spotify's AI-powered 'DJ' feature, arguing that it demonstrates a profound lack of understanding of human music appreciation and listening habits, and that the AI's music selections often miss the mark in terms of relevance and personalization.

charlespetzold.com
223 191
Summary
ibobev 4 days ago

Examples for the tcpdump and dig man pages

The article provides helpful examples and explanations for using the tcpdump and dig command-line tools to analyze network traffic and domain name system (DNS) information, respectively. It offers a practical guide for troubleshooting network-related issues and understanding internet communication.

jvns.ca
33 4
Summary
Pentagon expands oversight of Stars and Stripes, limits content
geox about 2 hours ago

Pentagon expands oversight of Stars and Stripes, limits content

The Pentagon has released a modernization plan that aims to enhance military capabilities and readiness through investments in areas like artificial intelligence, hypersonic weapons, and space-based systems. The plan outlines strategies to leverage emerging technologies and strengthen the US military's competitive edge in the face of evolving global threats.

stripes.com
29 1
Summary
ibobev 4 days ago

Why Mathematica does not simplify sinh(arccosh(x))

The article discusses the relationship between the hyperbolic sine (sinh) and inverse hyperbolic cosine (arccosh) functions, highlighting their mathematical properties and potential applications in various fields.

johndcook.com
93 24
Summary
Uptrenda about 10 hours ago

A most elegant TCP hole punching algorithm

The article explains the concept of TCP hole punching, a technique used to establish direct peer-to-peer connections between devices located behind Network Address Translation (NAT) routers. It discusses the challenges of NAT traversal and how TCP hole punching can be used to overcome these challenges, allowing for more efficient and secure communication between devices.

robertsdotpm.github.io
127 47
Summary
davikr about 14 hours ago

How kernel anti-cheats work

The article explains how kernel-level anti-cheat systems work, focusing on their ability to monitor system-level activities and detect cheating in online games. It discusses the trade-offs between security and privacy, as well as the potential risks and controversies surrounding these intrusive anti-cheat measures.

s4dbrd.github.io
243 203
Summary
Treasure hunter freed from jail after refusing to turn over shipwreck gold
tartoran about 11 hours ago

Treasure hunter freed from jail after refusing to turn over shipwreck gold

The article discusses the discovery of a 'super-Earth' exoplanet, TOI-2109b, which is approximately 1.9 times the size of Earth and orbits its host star in just 16 hours. The findings shed light on the formation and evolution of hot, short-period exoplanets and provide insights into the limits of planetary systems.

bbc.com
121 164
Summary
IBM, sonic delay lines, and the history of the 80×24 display
rbanffy about 3 hours ago

IBM, sonic delay lines, and the history of the 80×24 display

The article explores the history of IBM's use of sonic delay lines, a pioneering data storage technology that predated modern digital computers. It provides insights into the technical development and applications of this early electronic computing approach.

righto.com
8 1
Summary
sebi_io about 16 hours ago

Allow me to get to know you, mistakes and all

The article discusses the importance of being vulnerable and allowing others to get to know us, mistakes and all. It emphasizes the power of authenticity in building meaningful connections and personal growth.

sebi.io
199 88
Summary
Show HN: Han – A Korean programming language written in Rust
xodn348 about 16 hours ago

Show HN: Han – A Korean programming language written in Rust

A few weeks ago I saw a post about someone converting an entire C++ codebase to Rust using AI in under two weeks.

That inspired me — if AI can rewrite a whole language stack that fast, I wanted to try building a programming language from scratch with AI assistance.

I've also been noticing growing global interest in Korean language and culture, and I wondered: what would a programming language look like if every keyword was in Hangul (the Korean writing system)?

Han is the result. It's a statically-typed language written in Rust with a full compiler pipeline (lexer → parser → AST → interpreter + LLVM IR codegen).

It supports arrays, structs with impl blocks, closures, pattern matching, try/catch, file I/O, module imports, a REPL, and a basic LSP server.

This is a side project, not a "you should use this instead of Python" pitch. Feedback on language design, compiler architecture, or the Korean keyword choices is very welcome.

https://github.com/xodn348/han

github.com
188 103
anonzzzies about 15 hours ago

SBCL Fibers – Lightweight Cooperative Threads

atgreen.github.io
123 23
nateb2022 about 16 hours ago

Ageless Linux – Software for humans of indeterminate age

Ageless Linux is a community-driven project that aims to provide a user-friendly and secure Linux distribution for older and lower-powered hardware, with a focus on maintaining system performance and extending device lifespans.

agelesslinux.org
705 462
Summary
Centuries of selective breeding turned wild cabbage into different vegetables
bensouthwood 4 days ago

Centuries of selective breeding turned wild cabbage into different vegetables

This article explores the growing popularity of heirloom and open-pollinated vegetable varieties, which are prized for their superior taste and nutritional value compared to mass-produced hybrids. It discusses the benefits of preserving genetic diversity in agriculture and the efforts of seed-saving organizations to make these flavorful vegetables more accessible to home gardeners and small-scale farmers.

worksinprogress.news
75 29
Summary
bookofjoe 3 days ago

Human Organ Atlas

This study investigates the potential impact of climate change on the spread of infectious diseases, focusing on the influence of temperature and precipitation on the transmission of malaria and dengue fever. The findings suggest that ongoing climate change may result in the expansion of these diseases to new geographic regions, highlighting the need for further research and targeted public health interventions.

science.org
16 1
Summary
1659447091 about 17 hours ago

Bumblebee queens breathe underwater to survive drowning

Bumblebee queens possess the remarkable ability to breathe underwater, allowing them to survive being submerged for up to a week. This discovery sheds light on how these insects can thrive in environments where they may face the risk of drowning.

smithsonianmag.com
152 34
Summary
MCP is dead; long live MCP
CharlieDigital about 18 hours ago

MCP is dead; long live MCP

The article discusses the end of the Minecraft Coder Pack (MCP) project, which has been a crucial tool for modding the popular game Minecraft. It highlights the challenges faced by the MCP team and the impact of Mojang's decision to discontinue support for older versions of Minecraft, leading to the retirement of the MCP project.

chrlschn.dev
191 169
Summary
Mathematics Distillation Challenge – Equational Theories
picafrost 1 day ago

Mathematics Distillation Challenge – Equational Theories

The article discusses the concept of 'equational theories' in mathematics, which are abstract algebraic structures that can be used to study and classify various mathematical objects. The author proposes a challenge to distill the key insights and ideas of this topic into a concise and accessible form.

terrytao.wordpress.com
81 3
Summary
at2005 about 13 hours ago

Tree Search Distillation for Language Models Using PPO

The article explores a novel approach called 'Tree Search Distillation' that aims to improve the performance of language models by using Proximal Policy Optimization (PPO) to train them on tree-structured search outputs. The technique is designed to enhance the ability of language models to generate more coherent and relevant responses.

ayushtambde.com
69 5
Summary
kosmavision 4 days ago

A look inside Dialector, filmmaker Chris Marker's chatbot from 1988

The article discusses the annual Festival of the Machines in the city of Kubicki, a celebration of technology and innovation, where people gather to showcase their latest inventions and creations.

kubicki.org
56 4
Summary
An ode to bzip
signa11 about 22 hours ago

An ode to bzip

The article provides an in-depth exploration of the bzip2 compression algorithm, highlighting its efficient data compression capabilities, its historical significance, and its continued relevance in modern computing environments.

purplesyringa.moe
157 82
Summary
A Recursive Algorithm to Render Signed Distance Fields
surprisetalk 4 days ago

A Recursive Algorithm to Render Signed Distance Fields

This article explores a recursive algorithm for rendering signed distance fields, a technique used in computer graphics to represent and manipulate shapes. It delves into the mathematical foundations and implementation details of this algorithm, providing insights into its efficiency and potential applications.

pointersgonewild.com
112 7
Summary
fatih-erikli-cg 3 days ago

Slicing Bezier Surfaces

The article discusses the process of slicing Bézier surfaces, a technique used in computer graphics to represent complex shapes. It explains the mathematical principles behind Bézier surfaces and provides a step-by-step guide on how to implement the slicing algorithm.

fatih-erikli-potato.github.io
15 4
Summary