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Building a 1U Rackmount Trigger Crossbar: A Tale of Woes and Triumphs

2025-09-15

The author details the design and construction of a custom 1U rackmount trigger crossbar for synchronizing multiple instruments in their electronics lab. Built around an FPGA and MCU, the device boasts numerous trigger I/O ports and an Ethernet SCPI interface. The journey, however, was fraught with challenges: power supply issues, soldering mishaps, an FPGA flash pinout error, and even the need for mini-mill surgery on the PCB. Despite these hurdles, the device is now operational, controllable via SSH and SCPI, and serves as a valuable lesson in hardware development.

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(serd.es)
Hardware

Gentoo Bans AI-Generated Contributions

2025-09-15

The Gentoo Council voted on April 14th to prohibit contributions created using AI natural language processing tools. This policy addresses copyright, quality, and ethical concerns. While AI-related software packages are permitted, directly using AI-generated code is banned due to potential copyright infringement, the risk of low-quality or nonsensical output, and ethical issues surrounding AI model training (e.g., copyright violations, high energy consumption). The policy aims to maintain the quality and integrity of Gentoo projects.

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(wiki.gentoo.org)
Development

PeerTube 7.3 Released: Streamlined Admin Panel and Enhanced Live Streaming

2025-09-15
PeerTube 7.3 Released: Streamlined Admin Panel and Enhanced Live Streaming

PeerTube, the decentralized YouTube alternative, has released version 7.3 with significant improvements. The update features a cleaner admin side panel, a new onboarding wizard for easier setup, and multilingual email support (currently French and Chinese). Live streaming now allows scheduling, boosting community engagement. Playlist management is enhanced with options to reorder playlists and set default video licenses and comment policies.

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(news.itsfoss.com)
Tech

Python-BPF: A New Way to Write eBPF Programs in Python

2025-09-15

Python-BPF is a revolutionary open-source library enabling the writing of eBPF programs entirely in Python, compiling them directly into object files. This eliminates the previous cumbersome approach of embedding C code within Python. Leveraging Python's AST and LLVM IR for compilation, Python-BPF supports control flow, hash maps, helper functions, and more, significantly streamlining eBPF development and offering a new production-ready option.

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(xeon.me)
Development

Titania: A Teaching Language for Compiler Development

2025-09-15
Titania: A Teaching Language for Compiler Development

Titania, based on the Oberon-07 language by Niklaus Wirth, is designed as an educational tool for learning compiler development. Its clean syntax covers core concepts like modules, procedures, and data types, and it includes built-in functions for numerical operations, bit manipulation, and memory management. Learning Titania provides a deep understanding of compiler principles and language design.

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(github.com)
Development compiler development

Page Objects: Making Your UI Tests Less Brittle

2025-09-15
Page Objects: Making Your UI Tests Less Brittle

Testing web pages requires interacting with elements, but directly manipulating HTML makes tests fragile. Page Objects solve this by encapsulating a page or fragment as an application-specific API. This allows interacting with elements without directly accessing HTML. The goal is to mimic user actions, providing a clean interface that hides underlying widgets. Text fields use string accessors, checkboxes booleans, and buttons action-oriented methods. Good Page Objects model the user's perspective, not the UI's internal structure, returning basic data types or other Page Objects. There's debate on including assertions within Page Objects. The author prefers keeping assertions in test scripts, avoiding bloated Page Objects and using assertion libraries to reduce redundancy. This pattern works across various UI technologies, useful not just for testing but also as a scripting interface for applications.

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(martinfowler.com)
Development Page Objects

Let's Encrypt Shuts Down OCSP, Prioritizes Privacy with CRLs

2025-09-15
Let's Encrypt Shuts Down OCSP, Prioritizes Privacy with CRLs

Let's Encrypt has officially discontinued its Online Certificate Status Protocol (OCSP) service, shifting exclusively to Certificate Revocation Lists (CRLs) for revocation information. This move prioritizes user privacy, as OCSP reveals users' IP addresses when accessing websites. Let's Encrypt stopped including OCSP URLs in certificates over 90 days ago; all certificates containing them have now expired. Discontinuing OCSP also simplifies Let's Encrypt's CA infrastructure, improving efficiency and reliability. At its peak, Let's Encrypt's OCSP service handled approximately 340 billion requests per month. Thanks to Akamai for generously donating CDN services for OCSP to Let's Encrypt for the past ten years.

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(letsencrypt.org)
Tech

Death to Type Classes: Exploring the Backpack Module System in Haskell

2025-09-15

This article explores replacing type classes with the Backpack module system in Haskell. The author demonstrates, through an example called "Death," how to define signatures for types like Functor and implement different instances (e.g., Maybe and IO). Cabal configuration allows flexible selection of implementations, such as using a state monad to simulate IO during testing. This approach, while requiring more Cabal configuration, offers clearer error messages, more flexible control, and potential performance advantages. The article concludes with a minimalist programming philosophy, arguing that simplification leads to better readability and maintainability.

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(jappie.me)
Development Module System

Website Anti-Scraping: Introducing Anubis

2025-09-15

This website uses Anubis, an anti-scraping system, to combat server downtime caused by aggressive web scraping from AI companies. Anubis employs a Proof-of-Work (PoW) mechanism similar to Hashcash, imposing minimal overhead on individual requests but significantly increasing the cost for large-scale scraping. This is a temporary solution; the ultimate goal is to identify and block headless browsers, thereby eliminating the need for the PoW challenge for legitimate users. Note: Anubis requires modern JavaScript features; disable plugins like JShelter to access the site.

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(celestiaproject.space)
Tech

The Secret Language of Movie Poster Colors: A Data-Driven Analysis

2025-09-15
The Secret Language of Movie Poster Colors: A Data-Driven Analysis

An analysis of nearly 60,000 movie posters reveals a fascinating correlation between film genre and color palette. Orange emerges as the most frequently used color, often paired with yellow in comedies, adventures, and family films to evoke warmth and fun. Action, sci-fi, and thrillers utilize the contrast between orange and blue to emphasize spectacle and conflict. Red is prevalent across horror, action, and romance, but its meaning shifts depending on context. Blue frequently represents oceanic or atmospheric settings, while green dominates in animation, family, and adventure films. Purple and pink often signal unconventional films, highlighting their unique style. This research provides data-backed insights for movie poster design, revealing the patterns of color usage across different genres.

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(stephenfollows.com)
Design movie posters color analysis film genre

Simplified Omarchy Installation on CachyOS

2025-09-15
Simplified Omarchy Installation on CachyOS

This project offers a script for installing DHH's Omarchy desktop configuration on CachyOS, a performance-optimized Arch Linux distribution. Omarchy, a Hyprland-based setup, prioritizes simplicity and productivity. The script streamlines the installation but requires familiarity with Arch Linux. It doesn't install CachyOS or handle partitioning, formatting, or encryption; users must do this beforehand. The script opts for Yay (AUR helper) and Fish (shell), retaining CachyOS's Tealdeer and Omarchy's Mise. Importantly, it doesn't install a display manager or autostart Hyprland unless already installed by CachyOS. No warranty is provided; use at your own risk.

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(github.com)
Development

Analyzing npm Package Version Numbers with a Bun Script

2025-09-15

This Bun script analyzes npm package version numbers. It fetches all package IDs from the npm replicate API and then retrieves version information for each package from the npm registry API. The script calculates the total number of versions and the largest number within the version numbers for each package, filtering out known problematic packages. It then outputs lists of packages with the most versions and the largest numbers in their versions. This helps identify patterns and potential issues in npm package version management.

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(adamhl.dev)
Development version numbers

Grapevine Canes: A Sustainable Solution to Plastic Pollution?

2025-09-15
Grapevine Canes: A Sustainable Solution to Plastic Pollution?

Researchers at South Dakota State University have developed a plastic-like material from grapevine canes that is stronger than traditional plastic and biodegrades in just 17 days. This breakthrough addresses the urgent need for biodegradable packaging, tackling the pervasive issue of plastic waste and microplastics in the environment. The resulting films, made from the cellulose in grapevine canes, are transparent, strong, and leave no harmful residue after decomposition, offering a promising sustainable alternative to conventional plastics.

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(www.sdstate.edu)
Tech biodegradable plastic

GPT-3's Astonishing Embedding Capacity: High-Dimensional Geometry and the Johnson-Lindenstrauss Lemma

2025-09-15
GPT-3's Astonishing Embedding Capacity: High-Dimensional Geometry and the Johnson-Lindenstrauss Lemma

This blog post explores how large language models like GPT-3 accommodate millions of distinct concepts within a relatively modest 12,288-dimensional embedding space. Through experiments and analysis of the Johnson-Lindenstrauss Lemma, the author reveals the importance of 'quasi-orthogonal' vector relationships in high-dimensional geometry and methods for optimizing the arrangement of vectors in embedding spaces to increase capacity. The research finds that even accounting for deviations from perfect orthogonality, GPT-3's embedding space possesses an astonishing capacity sufficient to represent human knowledge and reasoning.

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(nickyoder.com)
AI High-Dimensional Geometry Johnson-Lindenstrauss Lemma

Grandma's Recipes Ruined: Betty Crocker Mixes Shrink Again

2025-09-15
Grandma's Recipes Ruined: Betty Crocker Mixes Shrink Again

Betty Crocker cake mix reductions have sparked outrage among home bakers, particularly grandmothers. The decrease from 15.25 ounces to 13.25 ounces significantly impacts long-standing family recipes. Beloved cookies and cakes now yield fewer, inferior results, threatening cherished traditions. This isn't just shrinkflation; it's a blow to family heritage and baking legacies.

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(www.cubbyathome.com)
Misc cake mix shrinkflation

Microsoft Avoids EU Antitrust Fine by Unbundling Teams

2025-09-15
Microsoft Avoids EU Antitrust Fine by Unbundling Teams

The European Commission has closed a multi-year antitrust investigation into Microsoft after the company agreed to unbundle its Teams messaging app from its Office productivity suites. This avoids potentially massive fines for Microsoft. The tech giant pledged to offer cheaper versions of Microsoft 365 and Office 365 without Teams for the next seven years and to open APIs for better interoperability with third-party tools. The decision is seen as a win-win, allowing the EU to avoid a legal battle and Microsoft to escape a potential fine reaching 10% of its annual revenue.

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(techcrunch.com)
Tech

Cannabis Use Quadruples Type 2 Diabetes Risk: Shocking Findings from 4 Million Adult Study

2025-09-14
Cannabis Use Quadruples Type 2 Diabetes Risk: Shocking Findings from 4 Million Adult Study

An analysis of real-world data from over 4 million adults reveals a nearly fourfold increased risk of developing diabetes among cannabis users. The study, presented at the European Association for the Study of Diabetes annual meeting, found cannabis users were almost four times more likely to develop diabetes than non-users. While further research is needed to fully understand the link, the findings highlight the critical need for integrating diabetes risk awareness into substance use disorder treatment and for healthcare professionals to routinely assess cannabis use. Limitations include the retrospective study design and potential reporting biases in electronic health records, but the results remain concerning and underscore the need for more research into the long-term health effects of cannabis.

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(medicalxpress.com)
Tech health risk

Equatorial Guinea Cuts Internet to Annobón Island After Protest Over Dynamite Blasting

2025-09-14
Equatorial Guinea Cuts Internet to Annobón Island After Protest Over Dynamite Blasting

Following a protest by residents of Annobón Island, Equatorial Guinea, against dynamite explosions by a Moroccan construction company, Somagec, the government responded by cutting off internet access to the island. Dozens of protesters were imprisoned for nearly a year. The internet shutdown has crippled banking and emergency medical services, leaving residents reliant on expensive phone calls. The government and Somagec deny involvement in the shutdown, but the action is seen as another instance of government repression. Despite the island's mineral wealth, residents live in poverty and have sought independence for years, with this internet outage exacerbating tensions.

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(apnews.com)
Tech government repression Equatorial Guinea

Breaking Free from Negative Spirals: The Three Cs of Self-Sabotage

2025-09-14
Breaking Free from Negative Spirals: The Three Cs of Self-Sabotage

This article explores the mechanics of negative spirals and how to break them by identifying three key stages: core questions, construal (meaning-making), and calcification. Using vivid examples, the author demonstrates how people overinterpret minor events, leading to self-doubt and anxiety, ultimately worsening behavior and creating a negative feedback loop. The article introduces the concept of 'wise interventions,' suggesting proactive engagement with life's core questions to foster positive cycles, enhancing happiness and success.

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(behavioralscientist.org)
Misc

Reading to Forget: A Bayesian Approach to Efficient Reading

2025-09-14
Reading to Forget: A Bayesian Approach to Efficient Reading

A PhD student shares his efficient reading method: He doesn't try to remember all information but views reading as updating Bayesian beliefs, subtly refining his world model with each read. His goal is to stimulate thinking and generate new ideas, not memorize details. He discards most content, focusing on parts that shift his thinking or provide writing material, such as a well-written methodology section in a paper. Non-fiction that doesn't spark new thoughts or actions isn't deemed worthwhile. This approach prioritizes understanding and application over rote memorization.

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(mo42.bearblog.dev)
Misc Bayesian

GrapheneOS: A Security-Focused Android OS

2025-09-14
GrapheneOS: A Security-Focused Android OS

GrapheneOS (GOS) is a security-centric Android-based operating system compatible only with Google Pixel devices. It leverages multiple user profiles for robust privacy, each with independent encryption and permission settings, effectively creating isolated systems within your phone. Users can granularly control permissions for each profile, even completely halting background processes. Installation is straightforward, updates are seamless, and app permission management is powerful. While slightly less user-friendly than stock Android, GOS offers unprecedented control for security and privacy-conscious users, making it a compelling alternative.

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(dataswamp.org)
Development

Minimal Time-Sharing OS Kernel on RISC-V in Zig

2025-09-14
Minimal Time-Sharing OS Kernel on RISC-V in Zig

This post details a minimal proof-of-concept time-sharing operating system kernel implemented on RISC-V using the Zig programming language. The project, a re-imagining of an undergraduate OS assignment, leverages modern tooling and the RISC-V architecture. It features statically defined threads, inter-thread system calls, and round-robin scheduling via timer interrupts. Basic thread virtualization is implemented, with each thread having a private stack and register context. The code is open-sourced, and the author provides a detailed walkthrough of the implementation and code explanations, making it a valuable resource for students of systems software and computer architecture.

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(popovicu.com)
Development

The LLM Data Scraping Wars: A Copyright Battle and the Fightback

2025-09-14
The LLM Data Scraping Wars: A Copyright Battle and the Fightback

The evolution of how large language models (LLMs) acquire training data has sparked intense copyright battles. Initially, data scraping lacked ethical and legal considerations. However, with the commercialization of apps like ChatGPT, copyright issues became increasingly prominent, leading authors and publishers to sue AI companies. Companies like OpenAI began making deals with publishers to access data, but data scraping continued unabated and even became more brazen. In response to this data abuse, Cloudflare and others introduced anti-scraping tools, and the RSL standard emerged, allowing websites to set prices for data access. This marks a proactive fightback by website owners, and AI companies may eventually be forced to pay for data, changing the data acquisition ecosystem.

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(nymag.com)
Tech

JWST Hints at Earth-like Atmosphere on Exoplanet TRAPPIST-1e

2025-09-14
JWST Hints at Earth-like Atmosphere on Exoplanet TRAPPIST-1e

New JWST observations of TRAPPIST-1e, an Earth-sized exoplanet 40 light-years away, suggest the presence of a gaseous envelope similar to Earth's. While the detection is ambiguous and requires further confirmation, it represents a significant step in the search for a second Earth. The findings hint at an atmosphere potentially rich in nitrogen, with traces of carbon dioxide and methane – a composition resembling Earth's. This exciting discovery offers new avenues for the search for extraterrestrial life.

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(www.sciencealert.com)
Tech habitable planet

EPA Seeks to Roll Back PFAS Drinking Water Standards

2025-09-14
EPA Seeks to Roll Back PFAS Drinking Water Standards

The EPA is attempting to overturn its own regulations protecting Americans from unsafe levels of PFAS “forever chemicals” in drinking water. This move, met with fierce opposition from environmental groups, contravenes the Safe Drinking Water Act's anti-backsliding provision and jeopardizes public health. With PFAS contaminating the drinking water of approximately 200 million people nationwide, the EPA's decision has sparked widespread concern.

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(earthjustice.org)
Tech Drinking Water Safety Environmental Protection

Unearthing MIT's Lost CP/M Archive: A Retro Tech Treasure Trove

2025-09-14
Unearthing MIT's Lost CP/M Archive: A Retro Tech Treasure Trove

This repository unveils a treasure trove of CP/M operating system software and code from MIT's Macsyma Consortium, dating back to 1979-1984. Originally hosted on the MIT-MC computer and shared via ARPANET, then later moved to SIMTEL20, this archive contains 221 files extracted from 24 tape images. It offers a fascinating glimpse into early software development and is a valuable resource for researchers and retro computing enthusiasts.

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(github.com)
Tech

SpiderMonkey's Inline Caches: Beyond Simple Caching

2025-09-14

This post delves into the implementation of inline caching (IC) within the SpiderMonkey JavaScript engine. Unlike traditional caching, SpiderMonkey's IC is a self-modifying code technique. It inserts a series of stubs at call sites, dynamically selecting efficient execution paths based on input types. The first call executes a fallback path and generates corresponding stubs based on the result. Subsequent calls of the same type hit the cache, significantly improving efficiency. The article uses JavaScript addition as an example to explain how IC works, and mentions SpiderMonkey's latest CacheIR architecture, which abstracts the details of ICs to enable sharing between different compilers.

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(www.mgaudet.ca)
Development inline caching

Dementia Research Roundup: Anxiety, Depression, and Cognitive Impairment Linked

2025-09-14
Dementia Research Roundup: Anxiety, Depression, and Cognitive Impairment Linked

A growing body of research highlights the escalating global health crisis of dementia. This review article synthesizes multiple studies, exploring the epidemiology, risk factors, and interventions related to cognitive impairment in older adults. Findings indicate a strong association between anxiety and depression with cognitive decline, with repetitive negative thought patterns potentially exacerbating cognitive decay. The importance of social support, healthy lifestyles, and early interventions are stressed, offering valuable insights for future dementia prevention and treatment.

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(bmcpsychiatry.biomedcentral.com)
Tech cognitive impairment anxiety depression

Real-time SV2TTS: Transfer Learning for Multispeaker Text-to-Speech

2025-09-14
Real-time SV2TTS: Transfer Learning for Multispeaker Text-to-Speech

This open-source project implements real-time multispeaker text-to-speech (SV2TTS) synthesis using transfer learning from speaker verification, based on the author's master's thesis. It's a three-stage deep learning framework: creating a digital voice representation from short audio clips, then using this representation to generate speech from arbitrary text. While the project is older and may have lower quality than commercial alternatives, it supports Windows and Linux, with GPU acceleration recommended. Detailed installation and usage instructions are provided, along with support for various datasets.

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(github.com)
Development transfer learning
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