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ADSL works over wet string (2017)
Broadband services are a wonderful innovation of our time, using multiple frequency bands (hence the name) to carry signals over wires (us...
Most cited
Posts that commenters keep linking to, ranked by how many different people have cited them in Hacker News comments. 51 posts.
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Project Starline: Feel like you're there, together
Introducing Project Starline, a technology project that makes you feel like you're together, even when you're apart.
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Dissecting the Apple M1 GPU, part I
Apple’s latest line of Macs includes their in-house “M1” system-on-chip, featuring a custom GPU. This poses a problem for those of us in the Asahi Linux project who wish to run Linux on our devices, as this custom Apple GPU has neither public documentation nor open source drivers. Some speculate it might descend from…
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Apple iPhone charger teardown: quality in a tiny expensive package (2012)
This article is now available in Vietnamese Bộ sạc iPhone của Apple . Disassembling Apple's diminutive inch-cube iPhone charger reveals ...
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It's Time for Operating Systems to Rediscover Hardware
A glance at this year's OSDI program shows that Operating Systems are a small niche topic for this conference, not even meriting their own full session. This is unfortunate because good OS design has always been driven by the underlying hardware, and right now that hardware is almost unrecognizable from ten years ago…
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Introducing the PineNote
This month brings news that many of you have been waiting years for - we’re introducing the PineNote, a high-end e-ink device based on the powerful Quartz64 single board computer. But the good news doesn’t end here, the PinePhone keyboard has entered production, developers have begun work on PinePhone’s back cases…
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Apple didn't revolutionize power supplies; new transistors did (2012)
The new biography Steve Jobs contains a remarkable claim about the power supply of the Apple II and its designer Rod Holt: [1] Instead o...
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Reverse-engineering the Yamaha DX7 synthesizer's sound chip from die photos
The Yamaha DX7 digital synthesizer was released in 1983 and became "one of the most important advances in the history of modern popular mu...
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Second IC
In 2018 I made the first lithographically fabricated integrated circuits in my garage fab. I was a senior in high school when I made the Z1 amplifier, and now I’m a senior in college so there are some long overdue improvements to the amateur silicon process. The Z1 had 6 transistors and was a great test chip to…
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USB 3.0* Radio Frequency Interference on 2.4 GHz Devices (2012)
Browse Intel product information for Intel® Core™ processors, Intel® Xeon® processors, Intel® Arc™ graphics and more.
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Apple’s new M1 Pro and M1 Max processors
Apple today announced M1 Pro and M1 Max, the next breakthrough chips for the Mac.
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Apple Introduces AirTag
Apple today introduced AirTag, an accessory that works with iPhone and other Apple devices to track and find important belongings.
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The 100 MHz 6502
A 6502 (or 65C02) in an FPGA, running at 100 MHz, ready to plug into your vintage computer
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Dissecting the Apple M1 GPU, Part IV
After beginning a compiler for the Apple M1 GPU , the next step is to develop a graphics driver exercising the compiler. Since the last post two weeks ago, I’ve begun a Gallium driver for the M1, implementing much of the OpenGL 2.1 and ES 2.0 specifications. With the compiler and driver together, we’re now able to run…
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Dissecting the Apple M1 GPU, Part II
Less than a month ago, I began investigating the Apple M1 GPU in hopes of developing a free and open-source driver. This week, I’ve reached a second milestone: drawing a triangle with my own open-source code. The vertex and fragment shaders are handwritten in machine code, and I interface with the hardware via the…
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Dissecting the Apple M1 GPU, Part III
After a few weeks of investigating the Apple M1 GPU in January, I was able to draw a triangle with my own open source code . Although I began dissecting the instruction set, the shaders there were specified as machine code. A real graphics driver needs a compiler from high-level shading languages (GLSL or Metal) to a…
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Raspberry Pi Zero 2 W
Announcing the successor to the groundbreaking Raspberry Pi Zero: the $15 Raspberry Pi Zero 2 W, built around our own RP3A0 System-in-Package
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Raspberry Pi 3 Fastboot – Less Than 2 Seconds
This post tells about my journey on fast-booting a Raspberry Pi 3 (RPI). In addition to that, some optimizations are discussed that can be applied to a Qt (QML) application. At the end, we will have a …
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Testing Phone-Sized Faraday Bags
Complex software is, to put it mildly, hard to get right (for details, see almost any other posting on this or any other security blog). Especially for gadgets that are rich with microphones, cameras, location and environmental sensors, and communication links (such as, you know, smartphones), errors and security…
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The Next Backblaze Storage Pod
Each month we build 60 or so new Storage Pods, which require 60 CPUs, 720 SATA cables, 120 power supplies, and so on.
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Benchmarking the Apple M1 Max
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Intel Problems
Intel is in much more danger than its profits suggest; the problems are a long time in the making, and the solution is to split up the company.
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There oughta be a WiFi Game Boy cartridge
It took a while, but I finally managed to create my own Game Boy cartridge. With WiFi! At this point, it can only demo a simple telnet-style communication and access Wikipedia articles, but I am confident that I will showcase more in the future. For now, the interesting and surprisingly tricky part is how the thing…
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Achieving 11M IOPS and 66 GB/S IO on a Single ThreadRipper Workstation
TL;DR Modern disks are so fast that system performance bottleneck shifts to RAM access and CPU. With up to 64 cores, PCIe 4.0 and 8 memory channels, even a single-socket AMD ThreadRipper Pro workstation makes a hell of a powerful machine - if you do it right! Update 1: Since 2021, networks have gotten faster and now…
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Emulating AirTags to upload arbitrary data via Apple's FindMy network
Apple AirTags: Arbitrary data can be uploaded from non-internet-connected devices by sending Find My BLE broadcasts to nearby Apple devices. We're releasing an ESP32 firmware that turns the microcontroller into an (upload only) modem, and a macOS application to retrieve, decode and display the uploaded data.
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25 Gigabit Linux internet router PC build
init7 recently announced that with their FTTH fiber offering Fiber7, they will now sell and connect you with 25 Gbit/s (Fiber7-X2) or 10 Gbit/s (Fiber7-X) fiber optics, if you want more than 1 Gbit/s. While this offer will only become available at my location late this year (or possibly later due to the supply chain…
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Home-Built Scanning Tunneling Microscope (2015)
Scan Head STM Tips Vibration Isolation Electronics Software Scans Image Gallery Useful Links This project is my attempt to build a low-cost scanning tunneling microscope (STM) capable of atomic res…