Flipdiscs

96 skogstokig 2026-04-27 03:26:42 UTC flipdisc.io Llama Share 18

The user built a large interactive wall art using flipdiscs, a display type that utilizes electromagnetic pulses to flip small discs between two colors, and paired it with an Nvidia Orin Nano for processing power. The user created a library for using flipdisc screens in Node.js and built a reliable interface for the display using an expo app, allowing users to control and customize the display.

I bought Friendster for $30k – Here's what I'm doing with it

637 ca98am79 2026-04-26 21:26:42 UTC ca98am79.medium.com Llama Share 352

The domain name friendster.com was bought for $7456 in an auction and later sold for $20k in Bitcoin. The new owner created a social network with unique features like phone tapping to connect friends and fading connections to encourage in-person interactions.

TurboQuant: A first-principles walkthrough

83 kweezar 2026-04-27 02:26:42 UTC arkaung.github.io Llama Share 12

A vector is an ordered list of numbers that can be thought of as an arrow in space, and its length and inner product can be calculated using the norm and dot product. The goal of TurboQuant is to store a vector using a fixed number of bits per coordinate while minimizing the mean squared error (MSE) of the reconstructed vector, and it achieves this by applying a random rotation to the vector ...

Self-updating screenshots

207 bjhess 2026-04-27 00:26:42 UTC interblah.net Llama Share 30

The user built an automated screenshot system for a help centre in Jelly, using Rake tasks and a headless Chrome browser. This system updates screenshots automatically when the UI changes, reducing maintenance and keeping the help centre current.

Three constraints before I build anything

150 nervous_north 2026-04-27 00:26:42 UTC jordanlord.co.uk Llama Share 23

To ensure creativity and focus, I use three constraints: a one pager that captures my north star, a core piece of technology that supports my product, and a defining constraint that gives my product identity. If a project fails to meet any of these constraints, I don't build it, as it will likely result in a complex, bloated, or unidentifiable product.

AI can cost more than human workers now

31 nreece 2026-04-27 05:30:42 UTC axios.com Llama Share 10

Companies are spending more on AI than employee salaries, with IT budgets expected to reach $6.31 trillion in 2026. However, they must prove AI spending returns productivity gains or metrics to justify costs, shifting the focus from AI as a luxury to a liability.

Fast16: High-precision software sabotage 5 years before Stuxnet

210 dd23 2026-04-26 20:26:42 UTC sentinelone.com Llama Share 47

SentinelLABS uncovered a 2005 cyber sabotage framework, fast16, targeting high-precision calculation software with a kernel driver that patches code in memory to tamper with results. The framework was designed for strategic sabotage, introducing small but systematic errors into physical-world calculations.

The Prompt API

68 gslin 2026-04-27 02:26:42 UTC developer.chrome.com Llama Share 50

The Prompt API allows developers to send natural language requests to Gemini Nano in the browser for various applications. It requires a minimum of 22 GB free space, unlimited data, and Windows 10 or 11, macOS 13+, or Linux operating systems.

EvanFlow – A TDD driven feedback loop for Claude Code

48 evanklem2004 2026-04-27 02:26:42 UTC github.com/evanklem Llama Share 18

EvanFlow is a coding assistant that guides projects through implementation with checkpoints, no auto-commits, and no forced ceremony. It uses 16 cohesive skills and 2 custom subagents to ensure discipline and quality across iterations.

When the cheap one is the cool one

77 ddrmaxgt37 2026-04-27 00:26:42 UTC arun.is Llama Share 26

Apple and Porsche created affordable products by stripping down existing models and focusing on what's essential, then adding unique features to make them exciting. This approach reveals what customers value and can lead to a deeper understanding of the tool and one's capabilities.

When Your Digital Life Vanishes

45 benbreen 2026-04-27 02:26:42 UTC newyorker.com Llama Share 13

A man's body was discovered after a week, with his laptop's motherboard short-circuited by his deliquescent tissue. His father, a musician and data hoarder, taught him to protect files, but his own phone's fall led to data loss.

AI should elevate your thinking, not replace it

396 koshyjohn 2026-04-26 20:26:42 UTC koshyjohn.com Llama Share 300

The future of software engineering will belong to those who use AI to augment their skills, not replace them, by focusing on judgment, clarity, and original thought. Effective engineers will know what to delegate to AI and what to own, turning time savings into better thinking and avoiding the trap of shallow understanding and imitation.

Box to save memory in Rust

105 emschwartz 2026-04-26 21:26:42 UTC dystroy.org Llama Share 21

A Rust program reduced its memory footprint from 895MB to 420MB by optimizing the layout of structs and deserialization of JSON files. This was achieved by using optional fields and boxing to reduce memory usage, and verifying the results using a custom allocator.

Sawe becomes first athlete to run a sub-two-hour marathon in a competitive race

343 berkeleyjunk 2026-04-26 21:26:42 UTC bbc.com Llama Share 230

Sabastian Sawe made history by becoming the first athlete to run a sub-two-hour marathon in a competitive race, crossing the line in 1:59:30. Tigst Assefa also broke her own women's world record in a women-only field, finishing in 2:15:41.

FreeBSD Device Drivers Book

64 myth_drannon 2026-04-26 23:26:42 UTC github.com/ebrandi Llama Share 9

The book "FreeBSD Device Drivers" is a free, open-source guide that teaches readers from zero to writing production-quality FreeBSD drivers. It's a guided course with 38 chapters, hands-on labs, and covers the full lifecycle of driver development.

A Guide to CubeSat Mission and Bus Design

8 o4c 2026-04-27 04:26:42 UTC pressbooks-dev.oer.hawaii.edu Full Share 0

A Guide to CubeSat Mission and Bus Design

SWE-bench Verified no longer measures frontier coding capabilities

283 kmdupree 2026-04-26 14:26:42 UTC openai.com Llama Share 159

SWE-bench Verified, a benchmark for autonomous software engineering, has contamination issues due to publicly available data and flawed test cases, making it unsuitable for measuring model progress. A new benchmark, SWE-bench Pro, is recommended for reporting results due to lower contamination risk and more robust test cases.

Butterflies are in decline across North America, a look at the Western Monarch

187 1659447091 2026-04-26 21:26:42 UTC smithsonianmag.com Llama Share 55

Monarch butterflies are declining due to pesticides, habitat loss, and climate change, with a 99% chance of extinction by 2080. Conservationists are working to protect the species, using methods like habitat restoration and tracking monarch migrations to increase their chances of survival.

Running Bare-Metal Rust Alongside ESP-IDF on the ESP32-S3's Second Core

60 MrBuddyCasino 2026-04-26 21:26:42 UTC tingouw.com Llama Share 10

The user implemented a dual-core system on the ESP32-S3, where ESP-IDF manages Wi-Fi and BLE on Core 0 and bare-metal Rust code runs on Core 1 with zero scheduler interference. The system uses atomics for shared memory access and allows for updating the Rust binary independently of the ESP-IDF firmware.

Quirks of Human Anatomy

119 gurjeet 2026-04-26 13:26:42 UTC sdbonline.org Llama Share 66

The human body has many quirks and flaws, such as a blind spot in the eye, a narrow birth canal, and a vulnerable nervous system, which are a result of evolutionary compromises and mistakes. Despite these flaws, humans and other animals have developed remarkable adaptations and solutions to overcome them, such as the development of the brain and the ability to process visual information.

Magic: The Gathering took me from N2 to Japanese fluency

119 pwim 2026-04-26 19:26:42 UTC tokyodev.com Llama Share 44

The author used Magic: The Gathering to improve Japanese fluency by forcing himself to use the language in a real-world environment. This approach helped him transition from a JLPT N2 certification to actual proficiency.

Revocation of X.509 Certificates

16 jandeboevrie 2026-04-27 03:26:42 UTC blog.apnic.net Llama Share 2

Certificate revocation is a critical process in maintaining trust on the internet, but current methods such as CRLs and OCSP have limitations and are not always effective. Stapled OCSP and short-lived certificates are proposed as more scalable solutions to the revocation problem, but Chrome's inconsistent approach to revocation checking raises concerns about the effectiveness of these solutions.

Chernobyl wildlife forty years on

77 reconnecting 2026-04-26 20:26:42 UTC bbc.com Llama Share 8

A scientist, Pablo Burraco, discovered a dark-colored tree frog in Chernobyl's exclusion zone, sparking a question about radiation's impact on local wildlife. Research suggests some species may have adapted to radiation, but the evidence is still debated among scientists.

An AI agent deleted our production database. The agent's confession is below

598 jeremyccrane 2026-04-26 17:26:42 UTC twitter.com/lifeof_jer Full Share 755

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.

Clay PCB Tutorial

215 j0r0b0 2026-04-26 16:26:42 UTC feministhackerspaces.cargo.site Llama Share 127

Researchers at Mz* Baltazar's Lab developed a method to create PCBs from natural clay, using a 3D printed stamp and a low-energy firing process. The project aims to create sustainable and locally sourced hardware, reducing the reliance on conflict minerals and promoting fair trade practices.

MoQ Boy

52 mmcclure 2026-04-26 21:26:42 UTC moq.dev Llama Share 5

The user created a homebrew Twitch Plays Pokemon emulator using MoQ, a cloud-based streaming platform, to save bandwidth and CPU. The emulator uses MoQ's discovery mechanism to find available games and players, demonstrating how to use MoQ for robots and other applications.

Lessons from building multiplayer browsers

24 alejandrohacks 2026-04-27 00:26:42 UTC alejandro.pe Llama Share 10

The user joined a startup as a founding engineer working on a new browser, Sail, which aimed to be a collaborative software with real-time multiplayer features, but ultimately failed to gain traction due to positioning and market challenges. The user learned valuable lessons about product thinking, engineering, and design, and now advocates for the importance of clear positioning, user ...

The Visible Zorker: Zork 1

121 PLenz 2026-04-26 17:26:42 UTC eblong.com Full Share 23

A software exhibit that allows you to explore Zork and also Zork's source code at the same time.

Show HN: Free textbook on engineering thermodynamics

127 2DcAf 2026-04-26 15:26:42 UTC thermodynamicsbook.com Llama Share 30

This textbook provides a clear introduction to thermodynamics for university students and engineers, covering key concepts with examples and problems. It also includes historical explorations to connect ideas to their origins and impact.

Google banks on AI edge to catch up to cloud rivals Amazon and Microsoft

93 donsupreme 2026-04-27 01:26:42 UTC ft.com Full Share 69

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