Show HN: WhatCable, a tiny menu bar app for inspecting USB-C cables

https://raw.githubusercontent.com/darrylmorley/whatcable/main/docs/screenshot.png
WhatCable is a macOS menu bar app that identifies USB-C cables and their capabilities. It exposes cable information, charging diagnostics, and connected device identities via a friendly menu bar popover.

Git Your Freedom Back: A Beginner's Guide to Sourcehut (2025)

https://btxx.org/public/images/sourcehut-patches-list.webp
The article argues that GitHub's centralized and proprietary nature raises concerns about user data privacy and control, and suggests SourceHut as a more secure and decentralized alternative. SourceHut offers similar features to GitHub, including issue tracking, workflows, and static web hosting, but with a more open and community-driven approach.

Auto Polo

https://upload.wikimedia.org/wikipedia/commons/thumb/6/67/Auto_polo_crop1.jpg/250px-Auto_polo_crop1.jpg
Auto polo was a US motorsport from 1911 to the late 1920s, featuring cars instead of horses, but was dangerous and expensive. It was popular in the US and Europe, but declined due to high costs and safety concerns.

The Rotary Un-Smartphone

https://skysedge.com/telecom/RUSP/images/proto3/RUSPP3_Splayed_small.JPG
The Rotary Un-Smartphone is a production-ready phone with a rotary dial and two displays, requiring advanced assembly skills and no soldering. It's an open-source LTE device supporting Voice over LTE, available as a kit or with custom parts.

Show HN: Perfect Bluetooth MIDI for Windows

Erwin built a free open-source utility to bridge Bluetooth LE MIDI keyboards to Windows MIDI Services. It detects the receive channel of the piano and allows any DAW or Web MIDI app to use it.

How Mark Klein told the EFF about Room 641A [book excerpt]

You don't have permission to access "http://thereader.mitpress.mit.edu/the-whistleblower-who-uncovered-the-nsas-big-brother-machine/" on this server.

New copy of earliest poem in English, written 1,3k years ago, discovered in Rome

https://pxl-tcdie.terminalfour.net/prod01/channel_3/media/tcd/news-images/Elisabetta-Magnanti-and-Mark-Faulkner-with-the-Trinity-copy-of-Bedes-Ecclesiastical-History.-To-be-clear-this-is-not-the-manuscript-they-found-in-Rome----830X623.JPG
Researchers from Trinity College Dublin discovered a 1,300-year-old manuscript in Rome containing the first known poem in the English language, Caedmon's Hymn. The poem, praising God for creation, was composed by a cowherd from North Yorkshire after a divine visitation.

Grok 4.3

https://docs.x.ai/api/og?t=eyJ0aXRsZSI6Ikdyb2sgNC4zIiwidiI6IjMiLCJzY29wZSI6ImRldmVsb3BlcnMiLCJzZWN0aW9uIjoiTW9kZWxzIGFuZCBQcmljaW5nIn0.SMidkHaGudRzuawDgM_H4n4Y3WQgd7xcEmaQjlFarcw
Learn how to use our products and services

For Linux kernel vulnerabilities, there is no heads-up to distributions

CVE-2026-31431 is a Linux kernel vulnerability introduced in 2017, affecting multiple kernel versions. A workaround patch has been attached to disable the affected module.

OpenWarp

OpenWarp 是基于 Warp 开源代码的社区分支,支持自定义 OpenAI 接口和多语言。它保留 Warp 体验,允许用户控制 AI 层和凭证。

Softmax, can you derive the Jacobian? And should you care?

https://idlemachines.co.uk/essays/figs/softmax_distribution_shift.png
Softmax is a function that maps vectors into a probability distribution. It takes an unconstrained vector and projects it onto the probability simplex, where each entry is non-negative and sums to 1.

Shai-Hulud Themed Malware Found in the PyTorch Lightning AI Training Library

https://semgrep.dev/assets/people/isaac-evans.jpeg
A supply chain attack compromised the PyPI package 'lightning' versions 2.6.2 and 2.6.3, stealing credentials and attempting to poison GitHub repositories. The attack is linked to the 'mini Shai-Hulud' campaign and affects teams using lightning in their dependency tree.

Opus 4.7 knows the real Kelsey

https://substackcdn.com/image/fetch/$s_!q0IX!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F830c09c6-06a9-47e6-8552-6ba2cbfd3da5_2121x1414.jpeg
The author is concerned that AI models like Claude Opus 4.7 can identify individuals from their writing style, even if they write anonymously. This could lead to a loss of anonymity for writers and potentially harm those who rely on it for protection.

If I could make my own GitHub

The author wants to create a new forge that addresses issues with modern forges, such as enforcing pre-commit hooks, customizable PR approval, and smaller hosting units.

Maladaptive Frugality

The writer realized they had maladaptive frugality, prioritizing saving over spending on essential expenses and experiences. They learned to reframe frugality as a tool, not a virtue, and focus on mindful spending to achieve a higher quality of life.

How an oil refinery works

https://substackcdn.com/image/fetch/$s_!AIFC!,w_1456,c_limit,f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2Ff98b1375-89f9-4b10-a92a-25faf8a82069_800x600.png
Oil refineries process crude oil into various products like gasoline, diesel, and jet fuel using distillation, cracking, and other processes. The refining process is complex and requires large industrial facilities to handle the massive volume of crude oil consumed worldwide.

Claude Code refuses requests or charges extra if your commits mention "OpenClaw"

Something went wrong, but don’t fret — let’s give it another shot. Some privacy related extensions may cause issues on x.com. Please disable them and try again.

CPanel and WHM Authentication Bypass – CVE-2026-41940

https://storage.ghost.io/c/a0/dc/a0dcbbe4-0ae7-4d7e-90f7-ebbc3a0f5a84/content/images/size/w1200/2026/04/Group-8730--2-.png
A vulnerability in cPanel & WHM allows authentication bypass due to unstripped CRLF in session loading and saving. Exploiting this vulnerability can lead to unauthorized access to management planes of significant parts of the internet.

I built a Game Boy emulator in F#

https://nickkossolapov.github.io/fame-boy/building-a-game-boy-emulator-in-fsharp/images/pokemon.gif
A software engineer built a working Game Boy emulator, Fame Boy, in F# after learning about computer hardware by emulating a Game Boy and using AI to write unit tests. The emulator's development involved optimizing performance, fixing issues with the PPU and APU, and learning about functional programming and domain-driven development.

Can I disable all data collection from my vehicle?

https://media.rivian.com/image/upload/f_auto,q_auto/v1695930282/rivian-com/default-riv-com-sharing-image_gjg8mw.jpg
Rivian vehicles have a core feature of vehicle connectivity that can be disabled to limit functionality. Disabling connectivity will not affect subscriptions like Connect+, but will require separate cancellation.

How we run iSCSI over the internet

https://scsipub.com/images/og.png
scsipub is an iSCSI target server that serves arbitrary clients on the public internet, using Erlang's BEAM process model for efficient handling of concurrent connections. It supports features like multi-LUN sessions, SCSI-3 Persistent Reservations, and load balancing, making it suitable for real-world cluster software use.

Your Biggest Vulnerability is your Shitty Compensation

https://images.unsplash.com/photo-1744957280072-40a0ce0a8402?crop=entropy&cs=tinysrgb&fit=max&fm=jpg&ixid=M3wxMTc3M3wwfDF8c2VhcmNofDF8fGJyaWJlcnl8ZW58MHx8fHwxNzc3NTc4MTk0fDA&ixlib=rb-4.1.0&q=80&w=1200
The author is frustrated with employers who offer low pay for critical roles, leading to undercompensation and potential security risks.

Roboticist-Turned-Teacher Built a Life-Size Replica of Eniac

https://spectrum.ieee.org/media-library/man-crouches-behind-three-robots.png?id=65575461&width=1200&height=937
Tom Burick, a technology instructor at PS Academy, led his students in building a full-scale replica of the 1940s ENIAC computer for its 80th anniversary. Burick's passion for robotics and technology stems from his childhood and he now helps students with autism develop their strengths through hands-on projects.
The SIMD Quad algorithm is a new search algorithm that combines quaternary interpolation search with SIMD instructions to efficiently locate a target value in a sorted array of 16-bit unsigned integers. It outperforms binary search on both Intel and Apple platforms, with significant speedup on large arrays in cold cache scenarios.

Reverse Engineering SimTower

https://phulin.me/_astro/original.C9m_DFGt_Z1MbqzI.webp
The user attempted to reverse engineer a childhood video game, SimTower, using a large language model (LLM) to create a clean-room spec. However, the LLM struggled with complexity and verbosity of the binary, requiring a different approach.

Canonical/Ubuntu have been under DDoS for more than 15h

Welcome to Canonical and Ubuntu Status! View active incident progress, historical component status, and subscribe to email and RSS notifications for components and incidents on the move.

New mechanical panoramic film camera from Jeff Bridges

https://wideluxx.com/wp-content/uploads/2026/04/a-different-way-to-see.jpg
The WideluxX is a modern swing-lens camera that captures panoramic images on 35mm film through a single continuous exposure. It preserves the character of the original system while offering a unique way to create images that reflect duration rather than a single instant.

After dissing Anthropic for limiting Mythos, OpenAI restricts access to Cyber

https://techcrunch.com/wp-content/uploads/2026/04/Screenshot-2026-04-14-at-7.00.44-PM.png?w=1024
OpenAI is releasing GPT-5.5 Cyber to help companies find security holes, but critics fear it could be misused by hackers. OpenAI is restricting access to ensure legit cybersecurity users, consulting with the US government to make it more widely available.

The Hearts of the Super Nintendo (2024)

https://fabiensanglard.net/snes_hearts/resonator.webp
The Super Nintendo's components work together at the hardware level with a CLK output pin connected to a copper line spreading to most components. The console has two master clocks, one at 21.47727MHz and another at 24.576MHz, which are used to generate various clocks for the CPU, PPU, and other components.

Full-Text Search with DuckDB

The user explores DuckDB's full-text search (FTS) capabilities, comparing them to other FTS solutions like Elasticsearch and Postgres, and finds them powerful but limited. They provide a tutorial on using DuckDB's FTS extension with Python, including pre-processing email data and querying with Okapi BM25 algorithm.