The hottest Hardware Substack posts right now

And their main takeaways
Category
Top Technology Topics

Firmware Vibing

atomic14 • 346 implied HN points • 04 Jul 25
🕹 Technology Gadgets Hardware Software Coding Innovations
  1. There's a new one-button keyboard that makes coding simpler and fun. It's designed just for 'vibe coding'!
  2. The keyboard uses advanced technology to manage power efficiently, making it more effective than older designs.
  3. Creating low profile keys was tricky due to size differences, but it worked out in the end, making for a unique typing experience.

Hardware discovery: ACPI & Device Tree

Blog System/5 • 330 implied HN points • 01 Mar 25
🕹 Technology Hardware Software Operating Systems Embedded Systems
  1. Hardware discovery is the process where a computer's operating system recognizes the devices connected to it, like printers or keyboards, and finds the right drivers to make them work.
  2. ACPI and Device Tree are two methods that help the operating system understand what hardware is present; ACPI is used mainly on PCs, while Device Tree is often used for embedded devices like Raspberry Pi.
  3. For the system to function properly, it's important to load the correct configuration for these hardware descriptions at boot time, which helps the kernel know how to interact with the hardware.

Huang's Law

The Chip Letter • 6115 implied HN points • 18 Jun 25
🕹 Technology AI Hardware Computing Silicon Performance
  1. Huang's Law suggests that the performance of AI chips is improving much faster than what we used to call Moore's Law. It claims chips double their performance every year or so, which is a big leap forward.
  2. This new law emphasizes performance improvements related to AI, unlike Moore's Law, which was mostly about the number of transistors. It's all about how quickly these chips can process complex tasks.
  3. However, some experts think Huang's Law might not last as long as Moore's Law. While it's exciting now, it's still uncertain if this rapid improvement can continue in the future.

Investigating an "evil" RJ45 dongle

lcamtuf’s thing • 10815 implied HN points • 17 Jan 25
🕹 Technology Hardware Security Software Networking Malware
  1. Claims of widespread supply-chain attacks are often exaggerated. It's usually easier to steal passwords or trick people into downloading malware instead.
  2. The investigation revealed that the 'evil' RJ45 dongle was actually just a routine device with a self-extracting driver, not a malicious tool.
  3. It's good to stay cautious about hardware from unknown sources, but for most home users, this type of device is likely safe enough.

The race for "AI Supremacy" is over — at least for now.

Marcus on AI • 23595 implied HN points • 26 Jan 25
🕹 Technology AI Innovation Hardware Software Global Competition
  1. China has quickly caught up in the AI race, showing impressive advancements that challenge the U.S.'s previous lead. This means that competition in AI is becoming much tighter.
  2. OpenAI is facing struggles as other companies offer similar or better products at lower prices. This has led to questions about their future and whether they can maintain their leadership in AI.
  3. Consumers might benefit from cheaper AI products, but there's a risk that rushed developments could lead to issues like misinformation and privacy concerns.
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Choosing an op-amp for your project

lcamtuf’s thing • 4081 implied HN points • 03 Jan 25
🕹 Technology Electronics Engineering Circuit Design Hardware Signal Processing
  1. When selecting op-amps for projects, avoid using older models like LM741 and LM324, as modern options perform much better and are easier to use.
  2. Look for op-amps with rail-to-rail input and output capabilities, which allow for better voltage range handling and simplify your circuit design.
  3. Focus on key parameters like bandwidth, output current, and noise specifications, but remember that many modern op-amps have decent performance that meets the needs of most hobby projects.

One Law to Rule All Code Optimizations

Confessions of a Code Addict • 817 implied HN points • 08 Jun 25
🕹 Technology Software Programming Hardware Optimization Performance
  1. Code optimization can be unpredictable, and not every change will guarantee improved performance. It's important to understand why an optimization might succeed or fail.
  2. The Iron Law of Performance provides a framework for evaluating software optimizations. It focuses on three key factors: the number of instructions, cycles per instruction, and cycle time.
  3. Optimizations like loop unrolling and function inlining reduce the number of instructions executed and can increase instruction throughput. However, they might also lead to some challenges like register spills and increased cache pressure.

Weekend projects: Sketchy Sketch

lcamtuf’s thing • 3060 implied HN points • 06 Jan 25
🕹 Technology Electronics Hardware Programming DIY Projects Software
  1. A new version of the Etch-A-Sketch toy, called Sketchy Sketch, was created to be more user-friendly and modern. It uses digital controls for drawing and animating, unlike the old mechanical version.
  2. The Sketchy Sketch is built using a microcontroller and a display, allowing kids to create pixel art easily. It has a simple menu system and saves multiple images.
  3. The project shows that it's fun and rewarding to build something from scratch. The creator shares the parts and code online, encouraging others to try similar projects.

Learning Assembly for Fun and Profit

The Chip Letter • 12886 implied HN points • 14 Feb 25
🕹 Technology Programming Software Hardware Computing Education
  1. Learning assembly language can help you understand how computers work at a deeper level. It's beneficial for debugging code and grasping the basics of machine instructions.
  2. There are retro and modern assembly languages to choose from, each with its own pros and cons. Retro languages are fun but less practical today, while modern ones are more useful but often complicated.
  3. RISC-V is a promising choice for learning assembly language because it's growing in popularity and offers a clear path from simple concepts to more complex systems. It's also open-source, making it accessible for new learners.

Generate Videos on Your Computer with Pyramid Flow

The Kaitchup – AI on a Budget • 99 implied HN points • 24 Oct 24
🕹 Technology AI Video Software Hardware Generative
  1. Pyramid Flow is a new model that lets you generate videos quickly on your computer. It supports 768p resolution and works at 24 frames per second.
  2. You can create videos using either text prompts or a mix of text and image prompts, making it flexible for different projects.
  3. A consumer GPU, like the RTX 3090, is good enough for making these videos, and there's a notebook available with all the steps to help you get started.

Hands-on graphics without X11

Blog System/5 • 1240 implied HN points • 17 Jan 25
🕹 Technology Software Graphics Hardware Programming Systems
  1. Using NetBSD's wscons framework, you can access and manipulate the graphical framebuffer directly without needing X11. This lets programmers draw graphics in a simpler way.
  2. The architecture of wscons is structured in layers, making it possible to interact with various hardware devices uniformly. It ensures that both output and input devices work across different machines.
  3. You can handle keyboard input using a feature called wsmux, which allows you to manage multiple keyboard devices easily. It makes your program more robust if a keyboard isn't connected right away.

NVLink Fusion: Embrace, Extend, Extinguish

Mule’s Musings • 417 implied HN points • 27 May 25
🕹 Technology AI Hardware Networking Silicon Computing
  1. Nvidia has a strong edge in the market with its NVLink technology, allowing fast communication between chips. This positions Nvidia favorably against competitors who are still developing their own solutions.
  2. By licensing its C2C technology and selling NVLink chiplets, Nvidia is opening its technology to others while still maintaining a competitive advantage. This strategy helps Nvidia grow its influence and solidify its market position.
  3. The 'embrace, extend, extinguish' strategy means Nvidia is likely to dominate the market by allowing others to use its technology while quickly outpacing them with its own products and innovations.

An Introduction to Arduino

wavesandcode • 99 implied HN points • 21 Oct 24
🕹 Technology Electronics Microcontrollers Hardware Prototyping Education
  1. Arduino is a beginner-friendly microcontroller that lets you create electronic projects. It's easy to replace if you make mistakes.
  2. Basic components like breadboards, jumper wires, and LEDs are essential for building circuits. They help you connect and test your ideas quickly.
  3. Starting with simple projects is a great way to learn. Using resources like the Arduino Projects Book can guide you in building fun circuits.

Apple Computer in Strategic Retreat? Is It Shifting from Its AI Fantasies to Its Old Religion of Usability-Focused Hardware-Software Integration?

Brad DeLong's Grasping Reality • 161 implied HN points • 10 Jun 25
🕹 Technology Software Hardware AI Consumer Tech Innovation
  1. Apple is shifting its focus back to what it does best: making great hardware and software that work well together. This is a smart move for the company.
  2. By empowering developers and opening up new opportunities, Apple is creating more value and fostering better partnerships in the tech world.
  3. Instead of trying to chase new trends like AI, Apple is being more realistic and focusing on delivering solid products that people actually need.

More fun and games with high voltage...

atomic14 • 173 implied HN points • 14 Jun 25
🕹 Technology Electronics Engineering Hardware Innovation DIY
  1. High voltage projects can be tricky but also fun. You can get some wild voltages and sparks, which makes experimenting exciting.
  2. Sometimes, your equipment might not work as expected. Issues like voltage ripple can affect how things like LEDs operate.
  3. Finding the right tools is important. Some boards are better for driving specific loads, like nixie tubes, and can work smoothly with other components.

The Weekly Kaitchup #62

The Kaitchup – AI on a Budget • 159 implied HN points • 11 Oct 24
🕹 Technology AI Machine Learning Hardware Software Data science
  1. Avoid using small batch sizes with gradient accumulation. It often leads to less accurate results compared to using larger batch sizes.
  2. Creating better document embeddings is important for retrieving information effectively. Including neighboring documents in embeddings can really help improve the accuracy of results.
  3. Aria is a new model that processes multiple types of inputs. It's designed to be efficient but note that it has a higher number of parameters, which means it might take up more memory.

Synology DS923+ vs. FreeBSD w/ZFS

Blog System/5 • 827 implied HN points • 13 Dec 24
🕹 Technology Software Hardware Networking Data Storage Operating Systems
  1. Synology DS923+ and FreeBSD with ZFS offer different approaches for storage solutions. The DS923+ is a dedicated device designed for ease of use, while FreeBSD requires more manual setup and maintenance.
  2. The Synology system provides a friendly user interface and features like cloud backup options, while FreeBSD offers powerful command-line control but can be less user-friendly.
  3. Using the Synology NAS can give more peace of mind regarding data health and security due to its built-in features like encryption and monitoring alerts, compared to a DIY FreeBSD setup.

Brass Tacks

davidj.substack • 47 implied HN points • 14 Jun 25
🕹 Technology AI Hardware Software Web Development User Experience
  1. Using a split ortholinear keyboard can really help with wrist and finger positioning while typing. This might reduce discomfort or issues like repetitive strain injuries.
  2. Switching to AI tools like LLMs can sometimes be faster and more energy-efficient than traditional web searches. This is surprising since many people assume web searches are the quickest.
  3. In the future, AI could streamline our search for information by reducing the number of web searches needed. Instead of multiple searches, we might get answers in a single go using AI systems.

Where Was RDNA4 at AMD’s Keynote?

More Than Moore • 326 implied HN points • 06 Jan 25
🕹 Technology Hardware Software Gaming Electronics Artificial Intelligence
  1. AMD didn't announce RDNA4 at the CES keynote because they felt a short presentation wouldn't do it justice. They want to provide detailed information rather than leave people with questions.
  2. AMD plans to share more about RDNA4 through partners at CES, but a dedicated event will follow for an in-depth reveal. They are close to launch but wanted to wait for the right time.
  3. The naming scheme for new graphics cards will be clearer to help users make better comparisons. AMD aims to improve performance in key gaming areas and ensure good value for consumers.

Expansion hack: Power Stone, Power Stone 2 (Dreamcast)

Rings of Saturn • 58 implied HN points • 05 Feb 25
🕹 Technology Gaming Software Hardware Development Debugging
  1. Power Stone for Dreamcast has a hidden debug menu for testing different features like sound and animations.
  2. Power Stone 2 also includes a debug menu that offers similar testing capabilities and extra features to explore character moves.
  3. Patches are available to access these hidden menus, enhancing the gaming experience for players who want to dive deeper into the games.

Mach 1 with Python!

Bite code! • 733 implied HN points • 19 Nov 24
🕹 Technology Programming IOT Hardware Software Engineering
  1. You can measure distance using sonar technology, which was once considered advanced but is now easily available and affordable for projects like Raspberry Pi.
  2. Creating fun experiences, like detecting when people pass through a giant Mario pipe and playing a sound, requires careful planning and some troubleshooting.
  3. Working with hardware can be tricky, as it often involves dealing with unexpected issues and requires patience, but it can lead to creative and playful outcomes.

Lunduke's Quest - December 16, 2024

The Lunduke Journal of Technology • 1723 implied HN points • 17 Dec 24
🕹 Technology Software Hardware Innovation Internet Gadgets
  1. Everyone deals with challenges, it's a universal experience. We all face tough times, and it's important to recognize that you're not alone.
  2. Being real about feelings can help you connect with others. Sharing your honest emotions can strengthen relationships.
  3. Understanding that struggles are part of life can be comforting. It helps to remember that overcoming difficulties is how we grow.

CXL Is Dead In The AI Era

SemiAnalysis • 7475 implied HN points • 16 Mar 24
🕹 Technology AI Hardware Protocols Semiconductors
  1. CXL technology was once thought to revolutionize data center hardware, but many projects have been shelved in favor of other advancements.
  2. CXL is not likely to be the go-to interconnect for AI applications due to limitations in availability and deeper issues in the era of accelerated computing.
  3. The main challenges with CXL include PCIe SerDes limitations, competition from proprietary protocols for AI clusters, and the need for improvements in chip design for bandwidth efficiency.

Demystifying GPU Compute Software

The Chip Letter • 6989 implied HN points • 10 Mar 24
🕹 Technology Computing Programming Hardware Frameworks Development
  1. GPU software ecosystems are crucial and as important as the GPU hardware itself.
  2. Programming GPUs requires specific tools like CUDA, ROCm, OpenCL, SYCL, and oneAPI, as they are different from CPUs and need special support from hardware vendors.
  3. The effectiveness of GPU programming tools is highly dependent on support from hardware vendors due to the complexity and rapid changes in GPU architectures.

Nvidia B100, B200, GB200 - COGS, Pricing, Margins, Ramp - Oberon, Umbriel, Miranda

SemiAnalysis • 6364 implied HN points • 18 Mar 24
🕹 Technology Hardware Gaming Industry News Analysis Innovation
  1. Nvidia's new Blackwell GPUs introduce B100, B200, and GB200 models, offering improved performance and architecture.
  2. The B100 has exceptional gross margins exceeding 85%, showcasing Nvidia's strong pricing power in the market.
  3. The configuration of the Blackwell GPUs includes 8 stacks of 8-hi HBM3E with up to 192GB capacity, utilizing CoWoS-L technology for increased performance.

A Year In Chips

The Chip Letter • 8736 implied HN points • 30 Dec 23
🕹 Technology Semiconductors Programming Languages Hardware Microcontrollers
  1. The Chip Letter had 75 posts, over 500,000 views, and gained over 7,000 new subscribers in 2023.
  2. Highlighted posts included the story of Erlang at WhatsApp, the disappearance of minicomputers, and a celebration of the 65th anniversary of the Integrated Circuit.
  3. 2024 will bring posts on the history of microcontrollers, Moore's Law, the Motorola 6800, '8-bit', GPUs, TPUs, and more, with a 20% discount available for new annual subscriptions.

"Please wait while we access the functions on this card"

Disaffected Newsletter • 1938 implied HN points • 06 Feb 24
🕹 Technology Software Computing User Experience Hardware Automation
  1. Many everyday machines now have annoying delays when performing simple tasks that used to be instant, like using ATMs or accessing files. It's frustrating because these are basic functions.
  2. Modern devices often prioritize a fancy user experience over speed and efficiency, making us wait longer for actions that used to happen quickly. This creates a feeling of disconnect between users and their machines.
  3. The trend seems to be moving towards making everything software-controlled, even when it seems unnecessary. This can make basic interactions tedious and less intuitive for users.

Introducing Chiplets

The Chip Letter • 6770 implied HN points • 11 Feb 24
🕹 Technology Hardware Semiconductors Innovation
  1. The newsletter is introducing 'Chiplets,' shorter and more varied posts for the readers.
  2. Readers have the option to opt-in to receive 'Chiplets' in their inbox to avoid filling it with too many emails.
  3. The 'Chiplets' will cover a mix of historical and current topics in a more informal and fun way, offering a new format for readers.

DeepSeek's Edge

ChinaTalk • 741 implied HN points • 12 Jan 25
🕹 Technology AI Software Hardware Research Data
  1. DeepSeek has no business model, which allows its team to experiment freely without pressure to earn money. This gives them a unique advantage over most other AI labs that need to focus on revenue.
  2. DeepSeek runs its own data centers instead of relying on external cloud services. This means they have better control over their resources and can optimize their setup for efficiency.
  3. The company's success comes from their innovative software optimization techniques. By being smart about how they use their hardware, they've achieved high performance even with limited resources.

Last week at The Lunduke Journal (Nov 10 - Nov 23, 2024)

The Lunduke Journal of Technology • 1148 implied HN points • 25 Nov 24
🕹 Technology Software Hardware Development AI Internet
  1. Mozilla's Firefox is running out of money, with just nine months of funds left. This raises concerns about its future as a popular web browser.
  2. The Linux community is facing chaos as its Code of Conduct Board blocks essential file system changes. This conflict highlights issues within the community's governance.
  3. Red Hat is shifting focus from Linux to artificial intelligence, suggesting a major change in their business strategy and the future of open-source operating systems.

Eight More 8-Bit Era Microprocessors

The Chip Letter • 4368 implied HN points • 18 Feb 24
🕹 Technology Hardware Design History Innovation
  1. Designs that were not commercially successful can still be interesting and hold value for learning.
  2. Intel's 8085 microprocessor, while not a bad design, was overshadowed by Zilog's Z80 due to lack of major improvements.
  3. Signetics 2650 microprocessor faced limitations such as delayed time to market and segmented memory, showing the importance of timely releases and memory efficiency.

NCR PC4i

Computer Ads from the Past • 640 implied HN points • 23 Dec 24
🕹 Technology Computers History Ads Reviews Hardware
  1. NCR started as a cash register company and later moved into computing technology after World War II. They became known for their robust computers like the PT4 and PC4i, which were designed to compete with IBM.
  2. The NCR PC4i was praised for its durability and good build quality, making it suitable for heavy computer use. It was not portable, weighing 50 pounds, but offered performance and exceptional compatibility with existing software.
  3. NCR provided excellent customer support for their computers and included user-friendly software with detailed documentation, making their machines accessible for users.

The real "Year of The Linux Desktop"...

The Lunduke Journal of Technology • 574 implied HN points • 18 Dec 24
🕹 Technology Software Hardware Operating Systems Open Source Computing
  1. The Linux desktop is becoming more popular and user-friendly. More people are starting to see it as a viable alternative to other operating systems.
  2. New software and updates are making Linux easier for everyone to use. People don’t need to be experts anymore to enjoy its benefits.
  3. Community support and resources for Linux are growing. This means users can get help and share ideas more easily.