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Open Source Local Control for Daikin Air Conditioners

2025-07-21
Open Source Local Control for Daikin Air Conditioners

Tired of Daikin's slow, cloud-dependent Wi-Fi control? This open-source project offers a solution! It provides a local control module with web interface, MQTT, and Home Assistant integration, eliminating the need for cloud connectivity. PCB designs are available, and pre-built modules are sold on Tindie and Amazon UK. The project uses a GPL license, allowing forking and contributions, but prohibits commercial sales using the project's name and trademarks. The module is compatible with various Daikin models, offering features like automatic protocol detection, remote monitoring, and logging.

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(github.com)
Hardware Daikin Air Conditioner

Jujutsu: A Rust-Based VCS That Reimagines Git's Workflow

2025-02-04
Jujutsu: A Rust-Based VCS That Reimagines Git's Workflow

Jujutsu, a novel version control system written in Rust, offers a streamlined and powerful alternative to Git. This article explores Jujutsu's core concept: mutable changes, showcasing how this feature simplifies workflows. It explains how to easily undo operations, seamlessly handle conflicts, and efficiently manage large changes. Jujutsu integrates seamlessly with Git, acting as a powerful frontend while retaining compatibility. The article details efficient work patterns, such as using `jj new` and `jj edit` for change management, and employing revset expressions for flexible version history manipulation. Jujutsu provides a more elegant and efficient version control experience.

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(kubamartin.com)
Development

Nostalgic Internet: We Never Lost the Toxicity, We Just Forgot It

2025-01-12
Nostalgic Internet: We Never Lost the Toxicity, We Just Forgot It

A wave of nostalgia has recently swept the internet, with many yearning for a friendlier, simpler online world of 20 years ago. However, this article argues that this nostalgia overlooks the inherent toxicity and problems that existed even then. It explores the evolution of the internet, how platforms became dominated by large corporations, and the proliferation of hate speech and data extraction. Some view the internet as a failed utopia, while others remain hopeful, advocating for solutions such as reclaiming digital sovereignty and supporting self-organized projects to rebuild a kinder, fairer online space.

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(english.elpais.com)
Tech internet nostalgia online culture tech commentary

Unraveling the Math Behind NYT's Daily Word Game 'Waffle'

2025-01-17
Unraveling the Math Behind NYT's Daily Word Game 'Waffle'

A paper on arXiv explores the mathematics behind the New York Times' daily word game, Waffle. Author S.P. Glasby delves into the combinatorial properties of the game, explaining why some puzzles are easy while others are exceptionally difficult. The research reveals that a perfect solution requires precisely 11 orbits among the 21 squares, with at least one orbit of length 1. This provides a mathematical framework for understanding and potentially improving similar word puzzles.

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(arxiv.org)
Game

Elegant Functional Programming Examples: A Showcase

2025-03-18

This code showcases the elegance and conciseness of functional programming. It demonstrates functions for calculating rectangle areas, converting rectangle data from different formats, comparing string array elements, and flipping coordinate points. The use of pattern matching and macro definition enhances readability and expressiveness, highlighting the power of functional programming. The final example of flattening a tree structure beautifully illustrates recursion. These examples perfectly demonstrate how functional programming paradigms improve code maintainability and reusability.

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(rhombus-lang.org)
Development pattern matching code examples

OpenAI Outage: Unexpected Load from New Telemetry Service Causes Major Disruption

2024-12-16
OpenAI Outage: Unexpected Load from New Telemetry Service Causes Major Disruption

OpenAI experienced a major service disruption on December 11th, stemming from a newly deployed telemetry service. Intended to improve reliability, this service unexpectedly generated massive Kubernetes API server load, saturating the servers and causing the Kubernetes control plane to fail in most large clusters. This led to the breakdown of DNS-based service discovery. The incident highlights the unpredictable interactions within complex systems and the challenges of testing for failure modes that only appear under full load. OpenAI restored service by scaling down clusters, blocking network access to Kubernetes admin APIs, and scaling up API servers.

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(surfingcomplexity.blog)
Development API server saturation service disruption

US Equity Market Structure Primer: A Quick Guide

2025-01-11

This primer provides a concise overview of the US equity trading landscape. Initially created as an onboarding document for new hires, it covers the lifecycle of an order, market participants, communication mechanisms between them, and a high-level view of overall market activity. The guide can be read sequentially or selectively, with a visual representation of the order lifecycle offering a clear picture of the process. Even with limited prior knowledge, the sections on market participants, communication, and overall market activity provide a functional understanding of US equities trading. Future updates will delve deeper into market structure history and inherent conflicts of interest.

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(primer.prooftrading.com)
Tech US equities market structure trading

Python's Dark Magic: Dict Unpacking Library

2025-07-12
Python's Dark Magic: Dict Unpacking Library

A Python library called `dict-unpacking-at-home` provides dictionary unpacking, allowing you to unpack dictionaries directly like this: `{greeting, thing} = dct`. While cool, the author claims it's not a critical library and the current version breaks line numbers in stack traces. A fix exists, but at a cost... With almost a million downloads per month and 30M+ total downloads, many people are using this seemingly unreliable library.

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(github.com)
Development dictionary unpacking dark magic

Engineer Implements Reversible 1D Cellular Automata Using Bitwise Operations

2024-12-12
Engineer Implements Reversible 1D Cellular Automata Using Bitwise Operations

Richard Palethorpe, an engineer, created a demo using the GFXPrim library showcasing a one-dimensional binary cellular automaton and its reversible counterpart. The automaton evolves based on rules where each cell's state is determined by its own state and those of its left and right neighbors. The article details bitwise operation optimizations, such as parallel processing of multiple cells using 64-bit integers and bit rotation to simulate neighbor interaction. Reversible implementation is achieved by XORing with the previous state. The author explores compiler optimization and vectorization impacts on performance and ultimately implements an efficient rendering method.

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(richiejp.com)
Development cellular automata bitwise operations reversible computing

The Dopamine Economy: How Tech Giants Manipulate Your Brain

2025-02-01
The Dopamine Economy: How Tech Giants Manipulate Your Brain

This article explores how the 'addiction economy' manipulates the dopamine reward system to influence industries ranging from food to social media. The author argues that many of history's most successful companies rely on addictive mechanisms to create demand and profit, citing examples from tobacco, food, and pharmaceutical industries. The piece analyzes how tech companies, especially social media platforms, utilize algorithms to maximize user engagement, leading to addiction and mental health issues. Ultimately, the author warns that this addictive mechanism, combined with inherent human biases and conflict tendencies, can lead to severe societal consequences, urging caution regarding the risks of technological advancements.

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(www.profgalloway.com)
Tech addiction economy dopamine

Pocket Keyboard Design Contest: A Clash of Creativity and Technology

2025-03-22
Pocket Keyboard Design Contest: A Clash of Creativity and Technology

A unique pocket keyboard design contest has concluded, showcasing amazing entries. Participants cleverly utilized Bluetooth, minimal key layouts, side buttons, folding designs, and more to create portable keyboards that are both practical and aesthetically pleasing. 'bubby', with its innovative side-button design, won the grand prize, while several other ingenious keyboards also received awards. The contest not only demonstrated the participants' exceptional creativity but also advanced innovation in the field of pocket keyboard design.

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(chrischrislolo.github.io)
Hardware creative design

Rust Prototyping: Debunking the Myths

2025-01-17
Rust Prototyping: Debunking the Myths

This article challenges the common belief that Rust is unsuitable for rapid prototyping. The author argues that Rust's strong type system and tooling actually help developers catch design flaws early, reducing rework later. The article details several Rust prototyping techniques, such as using simple types, leveraging type inference, judiciously using `unwrap`, and utilizing IDE features effectively. Real-world examples illustrate how Rust's type system aids design, leading to robust production-ready code. The author also emphasizes avoiding premature optimization and recommends the `dbg!` macro for debugging. In short, this article provides a practical guide to Rust prototyping, enabling developers to efficiently translate ideas into working code.

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(corrode.dev)
Development Prototyping Programming Techniques

Enhanced Spin-Orbit Torque via Orbital Hall Effect for High-Density SOT-MRAM

2025-03-01
Enhanced Spin-Orbit Torque via Orbital Hall Effect for High-Density SOT-MRAM

Researchers significantly improved Spin-Orbit Torque (SOT) Magnetic Random-Access Memory (MRAM) device performance by leveraging the enhanced orbital Hall effect (OHE) of Ru, Nb, and Cr layers in combination with a perpendicularly magnetized [Co/Ni]3 ferromagnetic layer. Experiments showed a ~30% increase in damping-like torque efficiency with a positive sign for the Ru/Pt OHE layer compared to pure Pt. This resulted in a ~20% reduction in switching current across >250 devices and a >60% reduction in switching power. This work paves the way for next-generation SOT-MRAM devices with enhanced performance for high-density cache memory applications.

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(www.nature.com)
Hardware Orbital Hall Effect Spin-Orbit Torque

Schemesh: A Lisp-Scriptable Unix Shell

2025-02-15
Schemesh: A Lisp-Scriptable Unix Shell

Schemesh is an interactive shell scriptable in Lisp, designed as a user-friendly replacement for bash, zsh, and other traditional Unix shells. It offers interactive line editing, autocompletion, and history, while seamlessly integrating a full Lisp REPL powered by Chez Scheme for complex tasks. Users can switch effortlessly between shell syntax and Lisp syntax, with extensive functions provided for managing Unix processes. For scripting and serious programming, Schemesh replaces the slow and error-prone traditional shell scripting with a powerful Lisp REPL, boosting efficiency and reliability.

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(github.com)
Development

Kokoro TTS: A Lightweight and Efficient AI Voice Synthesizer

2025-05-17

Kokoro TTS is an AI-powered text-to-speech engine boasting 82 million parameters, striking a balance between model size and performance. Its standout feature is the ultra-fast real-time audio generation, producing naturally expressive AI voices that understand context and emotion. Supporting multiple languages including American and British English, French, Korean, Japanese, and Mandarin, Kokoro TTS offers flexible voice customization, catering to both content creators and developers for podcasts, audiobooks, and application integration.

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(kokoroai.org)
AI lightweight model

Revolutionary Algorithm Solves the 'Library Sorting Problem'

2025-02-20
Revolutionary Algorithm Solves the 'Library Sorting Problem'

A decades-old problem plaguing computer scientists—the 'library sorting problem' (or 'list labeling problem')—has finally seen a major breakthrough. The challenge is to devise an optimal strategy for organizing books (or data) to minimize the time it takes to add a new item. While previous algorithms had an average insertion time proportional to (log n)², the new approach comes tantalizingly close to the theoretical ideal. It cleverly combines a small amount of knowledge about the bookshelf's past contents with the surprising power of randomness, resulting in a remarkable efficiency improvement. This research has significant implications for optimizing database and hard drive file management, potentially drastically reducing wait times and computational overhead.

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(www.wired.com)
Development

The Brutalist and the AI-Enhanced Accent: A Commentary on Technological Interference in Film

2025-03-10
The Brutalist and the AI-Enhanced Accent: A Commentary on Technological Interference in Film

The Oscar-winning film 'The Brutalist' sparked controversy over its use of AI to refine the Hungarian accents of its actors. While the director claims AI was used subtly, critics argue it masked the actors' linguistic shortcomings and sets a worrying precedent for future film production. The article delves into the ethical implications of AI in filmmaking, suggesting its potential to stifle artistic originality and create a bland, homogenous aesthetic devoid of genuine human expression and artistic flaws. The author ultimately questions the future of artistic expression in an increasingly AI-driven world.

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(thebaffler.com)
Tech

Sub-$50 AI Reasoning Model Rivals Cutting-Edge Competitors

2025-02-06
Sub-$50 AI Reasoning Model Rivals Cutting-Edge Competitors

Researchers at Stanford and the University of Washington trained an AI reasoning model, s1, for under $50 using cloud compute. s1's performance matches state-of-the-art models like OpenAI's o1 and DeepSeek's R1 on math and coding tasks. The team leveraged knowledge distillation, using Google's Gemini 2.0 Flash Thinking Experimental as a teacher model and a dataset of 1,000 carefully curated questions. This low-cost replication raises questions about the commoditization of AI and has reportedly upset large AI labs.

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(techcrunch.com)
AI knowledge distillation low-cost AI

Unregistry: A Lightweight Docker Image Registry for Effortless Transfers

2025-06-19
Unregistry: A Lightweight Docker Image Registry for Effortless Transfers

Unregistry is a lightweight container image registry that stores and serves images directly from your Docker daemon's storage. The `docker pussh` command allows pushing images to remote Docker servers over SSH, transferring only missing layers for speed and efficiency. Bypass the complexities of Docker Hub or self-hosted registries; simply use `docker pussh myapp:latest user@server` for a direct, simple transfer. It establishes an SSH tunnel, runs a temporary Unregistry container, pushes only missing layers, then closes the tunnel. Perfect for production deployments, CI/CD pipelines, and air-gapped environments.

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(github.com)
Development Image Transfer Lightweight Registry

FreeBSD 14.3 Officially Adds Dedicated Kernel Module Package Repositories

2025-06-22
FreeBSD 14.3 Officially Adds Dedicated Kernel Module Package Repositories

For a long time, FreeBSD point releases have caused kernel module packages to be incompatible with the kernel version, leading to system crashes. To solve this problem, FreeBSD 14.3 officially introduces separate kernel module package repositories containing modules compatible with the latest kernel version. This addresses a long-standing user issue, improving system stability, particularly fixing system crashes caused by incompatible graphics drivers on desktop/laptop systems. The upgrade involves modifying the `/etc/pkg/FreeBSD.conf` file to include the new kernel module repositories.

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(vermaden.wordpress.com)
Development kernel modules

Calculator Puzzle: Four-Digit Numbers Always Divisible by 11?

2025-01-03
Calculator Puzzle: Four-Digit Numbers Always Divisible by 11?

A blog post presents a mathematical puzzle involving a standard calculator keypad. The puzzle challenges players to press four digit keys forming the corners of a square or rectangle, creating a four-digit number. The post elegantly proves that regardless of the chosen square or rectangle, the resulting four-digit number will always be divisible by 11. Multiple proof methods, including algebraic and pattern-based approaches, are explored, sparking an engaging discussion on mathematical patterns.

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(aperiodical.com)
Misc math puzzle calculator

arXivLabs: Experimenting with Community Collaboration

2025-03-03
arXivLabs: Experimenting with Community Collaboration

arXivLabs is a framework for developing and sharing new arXiv features directly on the website, fostering collaboration between individuals and organizations. Participants must adhere to arXiv's values of openness, community, excellence, and user data privacy. Got an idea to improve the arXiv community? Learn more about arXivLabs.

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(arxiv.org)
Development

1024 Silicon Quantum Dots Integrated: A Quantum Leap

2025-01-29
1024 Silicon Quantum Dots Integrated: A Quantum Leap

Researchers at Quantum Motion in London have achieved a significant breakthrough, integrating 1,024 independent silicon quantum dots with on-chip digital and analog electronics to create a quantum computing system operating at ultra-low temperatures. Published in Nature Electronics, this research uses radio frequency reflectometry for rapid characterization and reveals that cryogenic parameters of silicon quantum dots can be predicted from room-temperature behavior. This paves the way for large-scale integration of silicon spin qubits and potentially reduces the cost of developing quantum technologies.

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(phys.org)
Tech silicon quantum dots cryogenic electronics

Teen Influencer Stranded in Antarctica After Illegal Landing

2025-08-12
Teen Influencer Stranded in Antarctica After Illegal Landing

American teen influencer Ethan Guo's ambitious solo flight across seven continents to raise money for cancer research took a disastrous turn. He illegally landed in Chilean Antarctic territory after providing false flight plan information, leading to charges of providing false information and unauthorized landing. To avoid trial, he agreed to a deal involving a $30,000 donation to a children's cancer foundation and a three-year ban from re-entering Chile. He remains stranded in Antarctica, awaiting approval for his departure, hoping to resume his mission.

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(www.independent.co.uk)
Misc illegal landing

California Bill Aims to Restrict Minors' Social Media Use

2025-02-15
California Bill Aims to Restrict Minors' Social Media Use

California is considering the 'Protecting Our Kids from Social Media Addiction Act' (SB 976), aiming to limit minors' social media access. The bill centers on prohibiting minors from using personalized recommendation systems, a core feature of most platforms. This sparks debate over minors' First Amendment rights, as such restrictions could impede their ability to speak and access information online.

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(www.eff.org)
Misc minors

IBM Breakthrough: Beyond Copper Interconnects for Future CMOS Nodes

2024-12-16
IBM Breakthrough: Beyond Copper Interconnects for Future CMOS Nodes

IBM researchers presented two papers at the 2024 IEDM conference on back-end-of-line (BEOL) interconnect technology, showcasing advancements in advanced interconnect solutions. The first paper explored improvements and future directions for copper interconnect technology, while the second (co-authored with Samsung) introduced a post-copper alternative utilizing an advanced low-k dielectric (ALK) material and rhodium (Rh). This new technology significantly enhances performance and reliability, reducing resistance and capacitance, and addressing reliability challenges faced by traditional copper interconnects at 24nm and below. This research paves the way for future CMOS node chip manufacturing and provides crucial support for the continued development of high-performance, low-power logic integrated circuits.

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(research.ibm.com)
Hardware chip interconnect back-end interconnect

eli: A 15-Year Odyssey of Embedded Lisp Interpretation

2025-03-15
eli: A 15-Year Odyssey of Embedded Lisp Interpretation

eli is the culmination of over 15 years of designing and implementing embedded Lisp interpreters in various languages. Born from a need for an embedded Lisp for personal projects, it's become one of the author's most significant endeavors. Primarily implemented in Java, with ongoing efforts to integrate it with Common Lisp, eli demonstrates comparable performance to Python in certain benchmarks. The project boasts a unique type system encompassing bits, callables, comparables, countables, characters, floating-point numbers, integers, iterators, iterables, libraries, lists, maps, types, methods, missing values, numerics, pairs, strings, identifiers, durations, and points in time. It offers a rich feature set, including conditionals, loops, macros, variable binding, type checking, method definition, overloading, lambdas, and namespace/module management.

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(github.com)
Development

Self-Driving a 1993 Volvo 940 (Part 1: Actuators)

2025-01-04

The author and friends are participating in the 2025 Carbage Run winter edition, a 6-day winter journey across Sweden to the Arctic Circle and back to Helsinki. Their car: a 1993 Volvo 940, almost devoid of electronics. To make it self-driving, they're retrofitting actuators: steering motor, brake booster, and accelerator servo. This post details the process of adapting an electric power steering system from a 2020 Toyota Corolla, replacing the vacuum-assisted braking system with a Bosch iBooster, and using an off-the-shelf RC servo for the accelerator. A Tesla radar sensor was also added. It's a challenging project, with future posts covering wiring and a custom ECU.

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(practicapp.com)
Hardware self-driving car modification retrofitting

Veryfront Figma Kit: Design Stunning Websites in Minutes

2024-12-14
Veryfront Figma Kit: Design Stunning Websites in Minutes

Veryfront's new Figma Kit allows users to design stunning websites in minutes. Boasting 100+ components, light and dark mode support, and full responsiveness, the kit streamlines the design process. Users simply choose components, build pages, add content, and seamlessly hand off designs to front-end developers. Its intuitive tools and pre-built components save time and boost creativity, earning praise from users who report a transformed design process and increased efficiency.

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(veryfront.com)
Design Website Design UI Components
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