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Introducing “6-pack”: the first open hardware modular switch
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Hardware & Electronics
The most popular blog posts about hardware & electronics on Hacker News. 4,805 posts.
1532
Reverse-engineering the TL431: the most common chip you’ve never heard of (2014)
This article is now available in Russian: Реверс-инжиниринг TL431, крайне распространенной микросхемы, о которой вы и не слышали . A die p...
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Bitcoin mining on a vintage Xerox Alto: very slow at 1.5 hashes/second
I've been restoring a Xerox Alto minicomputer from the 1970s and figured it would be interesting to see if it could mine bitcoins. I coded u...
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Apple updates its iMac line
Apple today updated its iMac line with up to 9th-generation Intel 8-core processors for the first time and powerful Vega graphics options.
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Apple’s Universal Control
Apple’s “Universal Control” is holy-shit good
1537
Why are McDonald’s Self Service Kiosks so hackable?
McDonalds in Australia do a decent cup of coffee. It’s not great but it’s consistently decent so I often start my day with a cup. Due to my travels around Australia in a decked out van I have seen how many McDonalds operate and just how many of
1538
Espressif's ESP32-C5 Is Now in Mass Production
Today, we are glad to announce that ESP32-C5 is now in mass production.
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60 kHz (2022)
It’s WWVB, the station that the National Institute of Standards and Technology uses to broadcast the current time, tuned to the 60 kHz frequency. Day and night, this station diligently continues broadcasting.
1540
Home Assistant OS Release 8
Now using GRUB2 for UEFI-based systems, Home Assistant Yellow support, and support for UEFI-based AArch64 systems!
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Counterfeit Macbook charger teardown: convincing outside but dangerous inside
What's inside a counterfeit Macbook charger? After my Macbook charger teardown , a reader sent me a charger he suspected was counterfeit. ...
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Analysis of Magic Leap 2 at SPIE AR/VR/Mr 2022
Magic Leap 2 Presentation Was the Hit of the Conference Kevin Curtis (Curtis), Magic Leap’s VP of Optical Engineering, presentation “Unveiling Magic Leap 2’s Advanced AR Platform and Re…
1544
Audio Reactive LED Strips Are Diabolically Hard
I spent years building one of the most popular LED strip visualizers on GitHub. It's the kind of project that's easy to get started but diabolically hard to master.
1545
Diffractive Chocolate
Turn your chocolate into an edible color spectrum…
1546
If you watch closely enough, everything is a speaker
Using high speed cameras, it’s possible to record the vibrations of everyday objects caused by nearby sounds and reverse engineer the sounds…essentially turning
1547
μWWVB: A Tiny WWVB Station
μWWVB is a watch stand that automatically sets the time on atomic wristwatches where regular WWVB signal isn't available.
1548
Home lab beginners guide (2021)
My home lab in a 12U rack as of March 2026. What is a Home Lab? Think of a home lab as a place where you can fail in the privacy of your own home. As
1549
Pixel smartphone camera review: At the top
With an overall DxOMark Mobile score of 89, pixel, the latest Google smartphone, is the highest-rated smartphone camera we have ever tested. Its image quality scores are impressive across the board, but it is particularly strong in providing a very high level of detail from its 12.3MP camera, with relatively low…
1550
Bosch gives go-ahead for volume production of silicon carbide chips
Reutlingen, Germany – They are small, powerful, and extremely efficient: semiconductors made of silicon carbide (SiC). After several years of development, Bosch is now starting volume production of power semiconductors made of this innovative material, supplying automotive manufacturers worldwide. In the future, more…
1551
GMP damaging Zen 5 CPUs?
We have fried two Ryzen 9950X CPUs in a few months by running GMP tests and the GMP-based factoring program GMP-ECM . This is not expected, of course. In this page, we provide as much information as possible to help analysing the problem.
1552
Librem 14 begins shipping
Purism makes premium phones, laptops, mini PCs and servers running free software on PureOS. Purism products respect people's privacy and freedom while protecting their security.
1553
How SpaceX streamlined the Raptor engine
If you’re reading this, there’s a very good chance you’ve seen this famous image of three iterations of SpaceX’s Raptor rocket engine.
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Why libvirt supports only 14 PCIe hotplugged devices on x86-64
You might have used libvirt , a Linux daemon that provides an abstraction and management layer for virtualization software. This daemon allows you to submit an XML file containing a description of a VM, disk image or network. libvirt is then able to configure, start it and keep it running.
1556
Reviving the Pakon film scanner
Introduction
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Rust your ARM microcontroller
A blog about Rust and embedded stuff
1559
Can Dell’s 6K monitor beat their 8K monitor?
For the last 10 years, I have been interested in hi-DPI monitors, and recently I read about an interesting new monitor: Dell’s 32-inch 6K monitor (U3224KBA), a productivity monitor that offers plenty of modern connectivity options like DisplayPort 2, HDMI 2 and Thunderbolt 4.
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