Tiny Code Reader (TCR): A $7 Surprise

2025-07-23
Tiny Code Reader (TCR): A $7 Surprise

The Tiny Code Reader (TCR) is a miniature QR code reader module costing just $7. Utilizing an RP2040 microcontroller and an Arducam image sensor, it connects easily via I²C. Testing revealed fast decoding, but a narrow field of view (approx. 10mm) limits its application. Despite this, its low cost and ease of use make it a compelling development platform, especially for desktop manufacturing and similar applications.

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Hardware QR code reader

Building a Custom In-Memory Table Access Method for Postgres

2025-08-08

This post details the author's journey building a custom PostgreSQL table access method, effectively creating a simple in-memory storage engine. Starting with a debug build of PostgreSQL, the author incrementally implemented the various functions of the table access method API, culminating in a fully functional system capable of creating tables, inserting data, and querying results. The process involved overcoming numerous challenges, including debugging and understanding PostgreSQL internals, which were addressed through logging and iterative debugging. This serves as an excellent example of PostgreSQL extension development, providing valuable experience and guidance for other developers.

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Development Extension Development

Global Temperatures Hit 1.5°C: Paris Agreement Target Breached Early?

2025-02-15
Global Temperatures Hit 1.5°C: Paris Agreement Target Breached Early?

June 2024 marked the first time in recorded history that global mean surface temperatures exceeded 1.5°C above pre-industrial levels for 12 consecutive months. While the UN Framework Convention on Climate Change aims to limit global warming to no more than 1.5°C, this refers to the long-term average. Researchers used climate model projections, combined with observations, to assess whether the long-term average temperature has already exceeded 1.5°C. Results suggest the Paris Agreement target may have been reached earlier than expected, potentially linked to the strong El Niño event. However, the models may be missing some drivers, such as the 2022 Tonga volcanic eruption and the 2020 shipping regulations, which could bias the results. Future efforts should incorporate updated forcings more rapidly into operational modeling for more accurate predictions.

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Agentic AI: Hype vs. Reality – Gartner Predicts 40% of Projects Will Be Cancelled

2025-06-29
Agentic AI: Hype vs. Reality – Gartner Predicts 40% of Projects Will Be Cancelled

Gartner predicts that over 40% of agentic AI projects will be cancelled by the end of 2027 due to rising costs, unclear business value, and insufficient risk controls. Research from Carnegie Mellon University and Salesforce reveals that AI agents achieve only 30-35% success rates on multi-step tasks. Many vendors are overselling their capabilities, rebranding existing products as agentic AI. While the concept is common in science fiction, real-world applications face challenges including security, privacy, copyright, and ethical concerns. CMU and Salesforce studies show even cutting-edge models struggle with common workplace tasks, highlighting that agentic AI is in its early stages and far from truly useful.

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AI

Giant Bomb Acquired by Longtime Staff: A New Chapter Begins

2025-05-11
Giant Bomb Acquired by Longtime Staff: A New Chapter Begins

Gaming media brand Giant Bomb has been acquired by its longtime staff members, Jeff Bakalar and Jeff Grubb. Fandom, the previous owner, is handing over operations to the veteran duo, marking a new chapter for the brand. Financial details of the deal remain undisclosed, but Giant Bomb's programming will resume as soon as possible. The new owners stated that Giant Bomb's future rests with its supportive community, and all support will directly benefit the team.

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From Hackers to AI Devs: Has the Spirit Changed?

2025-06-17
From Hackers to AI Devs: Has the Spirit Changed?

This article contrasts the hacker culture of the 90s with the culture of today's AI developers. 90s hackers were rebels, using technology to challenge authority, their actions closer to art than engineering. Modern AI developers, however, are often constrained by corporate environments and regulations, their work more process-driven. While tools and technology have drastically changed, the core spirit of pushing technological boundaries remains, albeit expressed differently. Some AI developers are rediscovering this spirit through open-sourcing models, building local inference engines, and challenging tech giants and established norms.

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DeepSeek-Prover-V2: Revolutionizing Formal Mathematical Reasoning with Reinforcement Learning

2025-04-30
DeepSeek-Prover-V2: Revolutionizing Formal Mathematical Reasoning with Reinforcement Learning

DeepSeek-Prover-V2 is an open-source large language model designed for formal theorem proving in Lean 4. It leverages a recursive theorem proving pipeline powered by DeepSeek-V3 and reinforcement learning to integrate both informal and formal mathematical reasoning. The model starts by decomposing complex problems into subgoals using DeepSeek-V3, synthesizing proofs of these subgoals to create initial data for reinforcement learning. DeepSeek-Prover-V2-671B achieves state-of-the-art performance, reaching an 88.9% pass ratio on MiniF2F-test and solving 49 problems from PutnamBench. A new benchmark dataset, ProverBench, containing 325 formalized problems from high school competitions and textbooks, is also introduced.

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France's Stunning New High-Speed Train Leaves Americans Green With Envy

2025-04-10
France's Stunning New High-Speed Train Leaves Americans Green With Envy

The unveiling of France's fifth-generation TGV Inoui high-speed train has sparked a wave of admiration, particularly in the US, where its sleek design and comfortable interiors are seen in stark contrast to the country's comparatively underdeveloped high-speed rail network. While Amtrak is making improvements, lack of funding and political hurdles hinder progress. The article explores the challenges facing US high-speed rail development, highlighting the potential of private projects like Brightline West as a path forward. The superior passenger experience offered by the TGV, including design and convenience, underscores the global gap in rail infrastructure.

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Why Are We So Obsessed with Cats? Ancient Fear and Modern Fascination

2025-07-19
Why Are We So Obsessed with Cats? Ancient Fear and Modern Fascination

This article explores the mystery of humanity's fascination with cats. The author speculates that this isn't due to neoteny, but rather stems from cats' history as a major predator of primates in Africa for millions of years. This ancient fear is embedded deep within our genes, causing us to instinctively pay attention to a cat's every move. Even though house cats pose little threat, we subconsciously perceive them as miniature leopards; this element of danger gives cats their unique appeal. The popularity of cat videos also confirms this: they usually present a calm scene suddenly disrupted by the cat, simulating the tense relationship between predator and prey, fulfilling our innate need for safely experiencing dangerous thrills.

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Misc predator

Google Search Integrates AI-Powered Audio Overviews

2025-06-13
Google Search Integrates AI-Powered Audio Overviews

Google is testing a new feature that integrates AI-powered Audio Overviews directly into mobile search results. Enabled via Labs, this feature generates podcast-style AI discussions for specific queries. For example, searching “How do noise cancellation headphones work?” reveals a ‘Generate Audio Overview’ button. Clicking this generates a ~40-second overview featuring two AI ‘hosts’ discussing the topic and linking to source materials. Currently, this is US-English only.

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AI

Solar Orbiter Captures First-Ever Images of Sun's Poles: A Messy Magnetic Field and a New Era

2025-06-12
Solar Orbiter Captures First-Ever Images of Sun's Poles: A Messy Magnetic Field and a New Era

The European Space Agency's Solar Orbiter has captured humanity's first-ever images of the sun's poles, a groundbreaking achievement. Previous images were all taken from near the sun's equator. By tilting its orbit, Solar Orbiter provided an unprecedented perspective. Using multiple instruments, the mission revealed a chaotic magnetic field at the sun's south pole and complex patterns of material flow. Future data will significantly advance our understanding of the sun's 11-year activity cycle and the formation of the solar wind.

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Tech

Faster PNGs: Exploring Zstandard and LZ4 as Alternatives

2025-08-06
Faster PNGs: Exploring Zstandard and LZ4 as Alternatives

Slow read/write times are a known issue with PNGs. This post suggests using newer, open-source, patent-free codecs like Zstandard (from Facebook) or LZ4 as a solution. Zstandard is already used in the Khronos KTX2 GPU texture format, offering significant speed improvements. The author also mentions even faster, simpler codecs like QOI, but these might require changes to image pre-processing.

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Development

Swift Takes on Android: Apple's Language Crosses the Platform Divide

2025-06-27
Swift Takes on Android: Apple's Language Crosses the Platform Divide

Apple's Swift programming language is expanding into Android app development. While Android primarily uses Kotlin, a newly formed Swift Android Working Group aims to make Android an officially supported platform. This group's goals include improving Android support for Swift, optimizing core Swift packages for Android's idioms, defining supported API levels and architectures, and establishing best practices for bridging Swift with Android's Java SDK. Although third-party tools already enabled Swift for Android development, Apple's move signifies a strategic expansion in mobile development.

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Development

Adult Basic Skills Test Scores Decline Sparks Concern

2024-12-16
Adult Basic Skills Test Scores Decline Sparks Concern

An international test of adults' "basic skills" reveals a growing number of Americans struggling with moderately complex reading and math tasks. U.S. adults scored below the OECD average in literacy and numeracy, with scores declining since 2017. While a correlation with declining children's test scores exists, the connection isn't straightforward. The largest score drops were among older adults, suggesting the issue extends beyond the education system. The test itself may be flawed, potentially measuring complex text comprehension more than pure reasoning. The article suggests education can bridge the gap by improving knowledge reserves and understanding of complex syntax, better preparing individuals for such tests.

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MemoTTL: A Thread-Safe Memoization Gem for Ruby with TTL and LRU

2025-04-22
MemoTTL: A Thread-Safe Memoization Gem for Ruby with TTL and LRU

MemoTTL is a thread-safe memoization utility for Ruby offering TTL (Time-To-Live) and LRU (Least Recently Used) eviction. It's perfect for caching method results, preventing redundant computations, and managing memory usage. The gem easily integrates via `include MemoTTL` and `memoize`, providing methods to clear the cache. Examples demonstrate its use in a Rails controller, significantly improving performance by avoiding repeated calls to expensive methods.

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Development

EU Eyes Shift from Microsoft Cloud to Boost Digital Sovereignty

2025-06-20
EU Eyes Shift from Microsoft Cloud to Boost Digital Sovereignty

The European Commission is in advanced talks with OVHcloud, a major European cloud provider, to transition its cloud services away from Microsoft. This move, driven by concerns over US executive orders and a desire for greater digital sovereignty, aims to give European institutions more control over their data and infrastructure. While OVHcloud is a leading contender, other European providers are also being considered. The Commission's streamlined internal structure, combining digital policy and IT under one commissioner, has facilitated this strategic shift.

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Tech

The Altair 8800: The Unsung Hero of the PC Revolution

2025-05-02
The Altair 8800: The Unsung Hero of the PC Revolution

Before Apple, before Commodore, there was the MITS Altair 8800. Released in 1975, this kit-based computer, featured on the cover of Popular Electronics, is considered the first commercially successful personal computer. Priced at $397, it lacked a keyboard and display, relying on switches and lights. Its popularity, exceeding 25,000 units sold, spurred the creation of Microsoft (Bill Gates and Paul Allen developed BASIC for it) and inspired Steve Wozniak's Apple I. The Altair's legacy extends to the S-100 bus standard, solidifying its place as a pivotal moment in computing history.

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mdq: A jq for Markdown, Simplifying Document Parsing

2025-02-23
mdq: A jq for Markdown, Simplifying Document Parsing

mdq is a command-line tool that aims to simplify parsing Markdown documents, similar to how jq works with JSON. It allows users to easily extract specific parts of a document, such as to-do checklists in GitHub PRs. mdq supports various selectors covering headings, lists, links, images, code blocks, and more, with regex support. Its syntax mirrors Markdown, making it intuitive. Piping allows chaining filters for complex parsing tasks.

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Development document parsing

Mastering Cryptography: A Hands-On Approach

2025-07-07

This book covers everything you need to understand complete systems like SSL/TLS: block ciphers, stream ciphers, hash functions, message authentication codes, public key encryption, key agreement protocols, and signature algorithms. Learn by doing – exploit common cryptographic flaws, forge administrator cookies, recover passwords, and even backdoor your own random number generator.

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Development practical

Therapy Culture Is Killing Personality

2025-07-07
Therapy Culture Is Killing Personality

The author argues that the pervasive influence of therapy culture is eroding our language and understanding of self. Every personality trait is framed as a problem to be solved, leading to the over-diagnosis and medicalization of normal human behavior. Young people, in particular, are internalizing this, seeing mental health challenges as defining aspects of their identity. This over-explanation, the article contends, robs us of the mystery and romance of relationships and self-discovery, leaving a generation anxious and miserable. The author calls for a return to accepting the unexplainable aspects of being human.

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Probing Browser Limits with Infinite CSS Values

2025-08-08
Probing Browser Limits with Infinite CSS Values

The author experimented with setting element width and height to `calc(infinity * 1px)` in CSS to explore how different browser rendering engines handle infinite values. Chrome and Safari capped the value at approximately 33,554,400 pixels. However, Firefox Nightly exhibited unusual behavior; height was limited to the text line height, while width reached millions of pixels, yet the layout width was roughly half. Further tests with font size and line-height revealed similar discrepancies, with Firefox's rendering drastically different from other browsers. The author speculates on the reasons for these oddities and invites readers to provide explanations.

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Development

Blitz: A Blazing-Fast, Zero-Cost CLI Framework for Zig

2025-05-25
Blitz: A Blazing-Fast, Zero-Cost CLI Framework for Zig

Blitz is a blazing-fast, zero-cost CLI framework for the Zig programming language. Build modular, ergonomic, and high-performance CLIs with ease. All batteries included. Inspired by Cobra (Go) and clap (Rust), Blitz offers modular commands and subcommands, fast flag parsing, type-safe support for various data types, and automatic help/version/deprecation handling. Get started quickly with a simple installation and intuitive API.

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Development

40 Years of FPGAs: From 64 Logic Blocks to 8.9 Million

2025-06-23
40 Years of FPGAs: From 64 Logic Blocks to 8.9 Million

This year marks the 40th anniversary of the FPGA. Starting with the Xilinx XC2064 in 1985, boasting a mere 64 configurable logic blocks, the technology has exploded. Today's AMD FPGAs (Xilinx's successor) contain 8.9 million system logic cells, millions of flip-flops and lookup tables, and incorporate advanced features like Arm processor cores and high-speed transceivers. This article traces the FPGA's journey, from early Boolean expression programming to modern HDL development and automated place-and-route, showcasing how FPGAs revolutionized digital logic design and are now integral to everything from submarines to space exploration.

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EU Regulations to End Android's Openness?

2025-08-02
EU Regulations to End Android's Openness?

The European Union's Radio Equipment Directive (RED) will take effect on August 1, 2025, with cybersecurity requirements significantly impacting the openness of Android smartphones. The directive mandates manufacturers to block unauthorized software installation, use Secure Boot to verify firmware authenticity, and ensure only signed ROMs can run. This means features like bootloader unlocking will disappear, reducing user and enterprise software control, making Android devices in Europe more iOS-like. Samsung has preemptively removed bootloader unlocking in its OneUI 8 update, and other manufacturers like Xiaomi and Google will have to follow suit to comply. This change enhances security but marks the end of an era of open Android customization.

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Tech

Cisco Firewall and TLS 1.3 Compatibility Issues

2025-05-22

A company encountered a problem with their Cisco firewall: due to TLS 1.3 encrypting server certificates, the firewall couldn't enforce URL or application access rules based on certificate content. To solve this, Cisco introduced TLS Server Identity Discovery, using an additional TLS 1.2 handshake to retrieve the certificate in plaintext. However, this clashed with expected Postgres database behavior. The actual issue wasn't TLS 1.3 incompatibility, but rather the firewall wasn't configured to block unknown applications; it attempted to learn the certificate for 3 seconds before giving up and allowing the connection.

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Tech

Improving LLM Fine-tuning Through Iterative Data Curation

2025-08-08
Improving LLM Fine-tuning Through Iterative Data Curation

Researchers significantly improved the performance of large language models (LLMs) by iteratively curating their training data. Experiments involved two LLMs of varying sizes (Gemini Nano-1 and Nano-2) on tasks of different complexity, using ~100K crowdsourced annotations initially suffering from severe class imbalance (95% benign). Through iterative expert curation and model fine-tuning, performance substantially increased. The models reached approximately 40% positive examples and a Cohen's Kappa of ~0.81 (lower complexity) and ~0.78 (higher complexity), approaching expert-level performance, highlighting the crucial role of high-quality data in LLM training.

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Rust Async Programming: Mastering Pin and Pin-Project

2025-05-22

This article delves into the intricacies of using Pin and the pin-project crate in Rust's async programming paradigm. Starting with associated types and type inference in Futures, the author builds up to the necessity of Pin to address memory safety issues arising from mutable borrows and moves within the state machine implementation of async functions. The article thoroughly explains Pin's function, usage, and how pin-project simplifies code, ultimately resulting in a safe and robust asynchronous state machine. It also highlights subtle considerations when employing pin-project.

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Development

Viral Chromebook Challenge Sparks Fires and Chaos in US Schools

2025-05-09
Viral Chromebook Challenge Sparks Fires and Chaos in US Schools

Schools across the US are warning parents about a dangerous TikTok trend called the "Chromebook Challenge." Students are deliberately damaging school-issued Chromebooks by inserting objects into ports, causing short circuits, fires, and school evacuations. The trend has led to disciplinary actions and even legal consequences for students involved. One incident in Connecticut resulted in a student being hospitalized after smoke inhalation from a damaged Chromebook, leading to potential criminal charges.

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Failed Experiment: A Git-Based Code Review Tool

2025-08-21
Failed Experiment: A Git-Based Code Review Tool

The author experimented with a tool called `git-review` to improve GitHub's code review process. The core idea was to treat code review as a commit stored within the repository, using in-code comments for review. However, the experiment was not successful. While adding comments directly to the code was highly efficient, modifying code under review proved tricky, especially dealing with conflicts and the friction of using `git push --force-with-lease`. The author ultimately abandoned the project but believes the core idea—in-code review—is valuable, and looks forward to future possibilities of improving code review through Git improvements.

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Development

The Rise of Tabletop RPGs: How Dungeons & Dragons Is Combating Loneliness

2025-03-27
The Rise of Tabletop RPGs: How Dungeons & Dragons Is Combating Loneliness

Starting from a board game café in New York City, a group of twenty-somethings transformed their Dungeons & Dragons hobby into a thriving Twitch channel, "The Bards of New York," boasting thousands of followers. Their success mirrors the exploding popularity of tabletop role-playing games (TTRPGs), especially Dungeons & Dragons. Once a niche hobby, D&D now boasts tens of millions of players, spawning movies, TV shows, and lucrative streaming careers. The article highlights how TTRPGs not only provide entertainment but also foster strong communities, combating loneliness and enhancing creativity and problem-solving skills—a particularly valuable aspect in a post-pandemic world.

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