Flipdiscs

211 skogstokig 2026-04-27 03:26:36 UTC flipdisc.io Llama Share 37

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

751 ca98am79 2026-04-26 21:26:36 UTC ca98am79.medium.com Llama Share 389

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

130 kweezar 2026-04-27 02:26:36 UTC arkaung.github.io Llama Share 19

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 ...

AI should elevate your thinking, not replace it

464 koshyjohn 2026-04-26 20:26:36 UTC koshyjohn.com Llama Share 334

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.

Self-updating screenshots

268 bjhess 2026-04-27 00:26:37 UTC interblah.net Llama Share 40

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.

The Prompt API

97 gslin 2026-04-27 02:26:37 UTC developer.chrome.com Llama Share 63

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.

Three constraints before I build anything

191 nervous_north 2026-04-27 00:26:37 UTC jordanlord.co.uk Llama Share 29

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.

Fast16: High-precision software sabotage 5 years before Stuxnet

236 dd23 2026-04-26 20:26:37 UTC sentinelone.com Llama Share 52

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.

When the cheap one is the cool one

106 ddrmaxgt37 2026-04-27 00:26:37 UTC arun.is Llama Share 48

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.

A Guide to CubeSat Mission and Bus Design

24 o4c 2026-04-27 04:26:37 UTC pressbooks-dev.oer.hawaii.edu Full Share 2

A Guide to CubeSat Mission and Bus Design

Box to save memory in Rust

123 emschwartz 2026-04-26 21:26:37 UTC dystroy.org Llama Share 29

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.

The Mushroom That Makes People Have the Exact Same Hallucination

20 thunderbong 2026-04-27 07:26:37 UTC vice.com Llama Share 6

Biologist Colin Domnauer reopened a case of "lilliputian hallucinations" in Yunnan province, China, caused by the Lanmaoa asiatica mushroom. The hallucinations, involving tiny elflike people, occur in different people across cultures and can last for a long time.

FreeBSD Device Drivers Book

80 myth_drannon 2026-04-26 23:26:37 UTC github.com/ebrandi Llama Share 14

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.

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

372 berkeleyjunk 2026-04-26 21:26:37 UTC bbc.com Llama Share 256

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.

SWE-bench Verified no longer measures frontier coding capabilities

295 kmdupree 2026-04-26 14:26:37 UTC openai.com Llama Share 161

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.

Mystery Cpuid Bit

10 userbinator 2026-04-27 05:26:37 UTC os2museum.com Llama Share 1

The user tested an Athlon 1200 CPU from 2001 and found an unknown CPUID bit set, specifically bit 18, which was listed as "reserved" in AMD documentation. The bit is likely related to ECC capability, which was supported in some Athlon models but dropped in the Athlon 4/Thunderbird.

Revocation of X.509 Certificates

34 jandeboevrie 2026-04-27 03:26:37 UTC blog.apnic.net Llama Share 7

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.

The Military Rockets That Launched the Space Age (2023)

8 radeeyate 2026-04-27 06:26:37 UTC airandspace.si.edu Full Share 0

Details: cache-sjc1000097-SJC 1777278409 4059368266

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

203 1659447091 2026-04-26 21:26:37 UTC smithsonianmag.com Llama Share 59

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.

Quirks of Human Anatomy

130 gurjeet 2026-04-26 13:26:37 UTC sdbonline.org Llama Share 70

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.

Chernobyl wildlife forty years on

100 reconnecting 2026-04-26 20:26:37 UTC bbc.com Llama Share 21

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.

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

66 MrBuddyCasino 2026-04-26 21:26:37 UTC tingouw.com Llama Share 11

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.

Magic: The Gathering took me from N2 to Japanese fluency

126 pwim 2026-04-26 19:26:37 UTC tokyodev.com Llama Share 54

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.

EvanFlow – A TDD driven feedback loop for Claude Code

62 evanklem2004 2026-04-27 02:26:37 UTC github.com/evanklem Llama Share 25

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.

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

646 jeremyccrane 2026-04-26 17:26:37 UTC twitter.com/lifeof_jer Full Share 799

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

221 j0r0b0 2026-04-26 16:26:37 UTC feministhackerspaces.cargo.site Llama Share 130

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.

Show HN: Free textbook on engineering thermodynamics

138 2DcAf 2026-04-26 15:26:37 UTC thermodynamicsbook.com Llama Share 35

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.

MoQ Boy

59 mmcclure 2026-04-26 21:26:37 UTC moq.dev Llama Share 7

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.

The Visible Zorker: Zork 1

127 PLenz 2026-04-26 17:26:37 UTC eblong.com Full Share 26

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

Lessons from building multiplayer browsers

28 alejandrohacks 2026-04-27 00:26:37 UTC alejandro.pe Llama Share 11

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 ...