PicoZ80 – Drop-In Z80 Replacement

https://eaw.app/images/picoZ80_sch_rp2350.png
The picoZ80 is a custom PCB designed to replace a physical Z80 in a host or industrial computer with a faster CPU, more memory, virtual devices, networking, and rapid application loading from an SD card. It hosts an RP2350B microcontroller, a dual-core 150MHz Cortex-M33 device capable of running at up to 300MHz, and an ESP32 co-processor for WiFi and Bluetooth connectivity.

Hegel, a universal property-based testing protocol and family of PBT libraries

https://hegel.dev/_astro/hedgel-small.CU9UUzkn.webp
Hegel is a universal property-based testing protocol and family of libraries, built on Hypothesis.

The Future of Everything Is Lies, I Guess: Part 3 – Culture

The author discusses how Large Language Models (LLMs) are changing the way we interact with information and each other, and how they may shape our culture, including our sex and erotic subcultures. The author also explores the potential for LLMs to create new forms of media, influence our values, and raise questions about the role of fixed, long-form writing by humans in a world where ...

Maine Is About to Become the First State to Ban Major New Data Centers

https://www.gadgetreview.com/wp-content/uploads/2a8e079e-10a6-4599-9e6e-ddb65aa7f05b_1920x1080.jpg
Maine lawmakers passed a bill temporarily blocking large data centers due to concerns over electricity costs and grid strain. The move may lead to higher costs for AI services if other states follow suit.

Bitmap fonts make computers feel like computers again

https://korigamik.dev/img/bitmap-fonts.png
Bitmap fonts are interesting because they require precision and were used in older displays due to limited rendering. They can add personality and mood to screens, especially in code and technical visuals.

Research-Driven Agents: What Happens When Your Agent Reads Before It Codes

https://blog.skypilot.co/research-driven-agents/assets/banner.png
A coding agent was used to optimize the performance of the llama.cpp neural network model, resulting in a 15% speedup on x86 and 5% speedup on ARM. The agent's success was due to its ability to read papers and study competing projects before writing code, allowing it to identify optimizations that code-only agents would miss.

Native Instant Space Switching on macOS

https://arhan.sh/_astro/settings.DnK3wkfD_Z2bVBxH.png
The user is frustrated with MacOS window management, specifically the inability to instantly switch spaces without animation. They found a solution called InstantSpaceSwitcher, a menu bar app that achieves instant space switching without drawbacks.

Show HN: I built a Cargo-like build tool for C/C++

https://opengraph.githubassets.com/67f2ac525a3138f9a9d137660eed8ad73c6f2ecb5f8592a75d0f729c0e8890e3/randerson112/craft
Craft is a lightweight build tool for C and C++ projects that automates configuration and dependency management. It uses a simple craft.toml file to generate CMake configuration and provides a clean command-line interface.

EFF is leaving X

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EFF is leaving X due to declining engagement and a shift in the platform's values under Elon Musk. They will focus on other platforms like Bluesky, Mastodon, and social media giants to protect digital rights.

Top laptops to use with FreeBSD

whether devices have degraded functionality, reducing the score by 0.5-1.5 based on severity and how important it is to the laptop experience (wi-fi/graphics weighted more)

Unfolder for Mac – A 3D model unfolding tool for creating papercraft

https://www.unfolder.app/img/og_image.jpg
Unfolder generates 2D parts for 3D models in seconds with optimized unfolding. It allows customization and export in various formats for printing, editing, or CNC cutting.

Little Snitch comes to Linux, but the core logic is closed source

https://the.unknown-universe.co.uk/wp-content/uploads/2026/04/black-box-930x620.webp
Little Snitch, a macOS network traffic gatekeeper, has been ported to Linux but its closed-source core logic is a non-starter for FOSS enthusiasts. A DNS blocker like AdGuard Home is a more efficient and transparent solution for network-wide security.

Reallocating $100/Month Claude Code Spend to Zed and OpenRouter

https://braw.dev/images/braw-dev-og-background_hu_960e5912b59745f.png
You're switching from Claude to Zed editor and OpenRouter for more flexibility and to avoid hitting limits. You'll pay $10/month for Zed and top up $90/month to OpenRouter.

Introduction to Nintendo DS Programming

https://www.patater.com/files/projects/manual/images/passme.png
The homebrew community allows individuals to create and run their own games on the Nintendo DS without needing official development contracts or equipment, using devices like passthroughs and NoPass devices to bypass copy protection. To get started, one should choose a Slot-1 device, such as the R4DS, M3 Real, or Cyclo DS Evolution, which supports DLDI and can run homebrew software from a microSD card.

A WebGPU implementation of Augmented Vertex Block Descent

https://raw.githubusercontent.com/jure/webphysics/main/webphysics-logo.svg
This project is an experimental WebGPU physics prototype using AVBD solver for rigid-body and soft-body physics. It's an initial proof of concept with limited browser support and requires further updates for stability and ease of use.

Wit, unker, Git: The lost medieval pronouns of English intimacy

https://ichef.bbci.co.uk/images/ic/480xn/p0nc7tyq.jpg.webp
The English language has lost many personal pronouns over the centuries, including the dual form "wit" which referred to two people, due to simplification and changes in social and political norms. Despite this, some Old English pronouns like "he", "it", and "we" have survived more than 1,000 years of history and upheaval, almost intact.

Meta removes ads for social media addiction litigation

https://images.axios.com/WAU3v7vI-vh1VDdEb_YBQXwGGOI=/0x0:4000x2250/1920x1080/2026/04/08/1775674521630.jpeg?w=3840
Meta removed ads from attorneys seeking clients harmed by social media under 18 after a California case found Meta and YouTube negligent. Meta claims it's removing ads to avoid adverse legal impacts and prevent trial lawyers from profiting from its platforms.

Doing Impressions: Monet's Early Caricatures (ca. late 1850s)

https://pdr-assets.b-cdn.net/collections/claude-monet-caricatures/claude-monet-caricature-00001.jpg?width=1200&height=850
Claude Monet sold caricatures of local bigwigs in Le Havre at age 15, earning up to 20 francs per piece. His profits allowed him to move to Paris and train as an artist, later becoming a famous Impressionist painter.

Show HN: CSS Studio. Design by hand, code by agent

https://images.motion.dev/motionscore/site-bg.png
CSS Studio offers a suite of design tools for editing layout, styles, and animations on a webpage. It sends updates to a local AI agent for implementation, automating code writing, review, and deployment.

OpenAI puts Stargate UK on ice, blames energy costs and red tape

https://regmedia.co.uk/2026/04/09/shutterstock_2719900129.jpg
OpenAI is pausing its Stargate UK datacenter project due to regulatory environment and high energy costs. The company still plans to proceed when conditions are right, investing in talent and expanding its local presence in the meantime.

Aggro Is the Foundation (2022)

Today I want to review a concept present in many domains, but most clearly articulated by TCG players. In a game like Magic the Gathering or Hearthstone, gameplay divides neatly into two phases: deck-building and execution. Deckbuilding involves all the choices and calculations that go into preparing your custom deck of cards before you even sit down (or log in) to draw your first hand. ...

Open source security at Astral

https://astral.sh/static/OpenGraph/Astral.jpg
The Astral organization shares techniques to secure their tools and GitHub Actions workflows, including pinning actions to specific commits and limiting permissions. They also enforce strong 2FA, branch protection rules, and immutable releases to prevent account and repository compromises.

Lichess and Take Take Take Sign Cooperation Agreement

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Lichess will provide infrastructure for Take Take Take's new play zone, remaining free and open-source. This cooperation aims to increase healthy competition and innovation in the chess ecosystem.

Launch HN: Relvy (YC F24) – On-call runbooks, automated

https://www.relvy.ai/aniket_dash.jpeg
Marketing promos went live, potentially causing traffic spikes, and need to be monitored. Relvy AI is checking logs for issues like auth failures and host-specific errors.

Help Keep Thunderbird Alive

https://updates.thunderbird.net/media/img/thunderbird/appeal/dec24/forest-roc.png
Thunderbird is funded by user contributions, not ads or corporate funding, to provide a private and customizable email experience. Users can support Thunderbird by donating to help maintain servers, fix bugs, and develop new features.

Building a framework-agnostic Ruby gem (and making sure it doesn't break)

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The author of Ruby Native learned that keeping an API clean across multiple frameworks like ERB, React, and Vue requires a framework-agnostic approach, such as using data attributes in HTML. They achieved this by using a MutationObserver to translate these attributes into native UI, allowing them to support multiple frameworks without breaking others.

LittleSnitch for Linux

https://obdev.at/Images/littlesnitch-linux/littlesnitch-linux-dark.png
Little Snitch for Linux is a network monitoring tool that tracks and blocks unwanted connections. It uses eBPF to observe and intercept network activity, and can be configured through a web interface or plain text files.

ChatGPT Pro now starts at $100/month

https://images.ctfassets.net/kftzwdyauwt9/6doGpmgaovugLavnNGxvzV/026d2446e0c47e0c5655cb04a306d50a/chatgpt_pricing_cover_image.png?w=1600&h=900&fit=fill
The plan options are Free, Go, Plus, Pro, Business, and Enterprise, each with varying text limits and features. Data residency options include US, EU, UK, JP, CA, KR, SG, IN, AU, UAE, with Enterprise having the most restrictive option.

Haunted Paper Toys

http://ravensblight.com/leftSquigly.jpg
The toy shop offers a variety of unusual paper toys, including haunted houses, monsters, and other dark delights, which can be printed and assembled with common supplies.

How Pizza Tycoon simulated traffic on a 25 MHz CPU

https://pizzalegacy.nl/assets/blog/city_map2.png
The user reimplemented the traffic system from the 1994 DOS game Pizza Tycoon, which runs on a 25 MHz CPU, using a simple one-way road system and pairwise collision detection. The system uses a straightforward approach, with cars not needing pathfinding or physics, and collision detection being cheap due to early-exit logic and limited road directions.