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The Lost Atomic Update on Loongson CPU
杰哥的{教学，运维，编程，调板子}小笔记
Top posts
Every blog post that took off on Hacker News, ranked by the votes of its best submission. 4,807 posts.
Hardware & Electronics
Any year
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Physical Knobs and Elixir
I like production gear. Audio, video and .. miscellaneous. I like things that seem like they'll make me oh-so-very productive. I'm a sucker prosumer as a hobby. Let's talk about Elgato, Elixir and why I never actually get anything done. This is unfortunately not sponsored by a prosumer brand, or anyone, that'd have…
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RISC-V Linux on ESP32
I've been playing with the idea of running linux on ESP32 since the first days I've met its more robust module, the WROVER-B, on paper it se...
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Apple Watch – What can you do with it?
A collection of thoughts, ideas and unsolicited opinion from Made by Many: articles, reflections, talks and interviews from the people doing the work.
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Powering a Mainframe
The last few days have been eventful. I was contacted by the datacenter that the mainframe's cage is now ready for moving in, and the power ...
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Inside an IBM/Motorola mainframe controller chip from 1981
In this article, I look inside a chip in the IBM 3274 Control Unit. 1 But before I discuss the chip, I need to give some background on main...
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PowerPC Notebook Block Diagram
Three months have passed since the kick-off of our campaign, and it is now time to share a status update. We reached the amount of €7100 thanks to more than one hundred donors that contributed, in some cases with more than one donation. We are thinking about how to boost the donations to achieve the […]
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Raspberry Pi holds its own against low-cost ARM NAS
Earlier this year, I pitted the $549 ASUSTOR Lockerstor 4 NAS against a homebrew $350 Raspberry Pi CM4 NAS, and came to the (rather obvious) conclusion that the Lockerstor was better in almost every regard. Well, ASUSTOR introduced a new lower-cost NAS, the $329 Drivestor 4 Pro (model AS3304T—pictured above), and sent…
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Sensors of largest digital camera snap first 3,200-megapixel images at SLAC
The camera will explore cosmic mysteries as part of the Rubin Observatory’s Legacy Survey of Space and Time.
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My Raspberry Pi cluster
So I accidentally ordered too many Raspberry Pi's. Therefore, I built a small cluster out of them. I thought I'd write up a parts list for o...
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I made a quieter air purifier
The physics of sound, and the PC fan CR box v1.
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I Build Supercomputers in My Spare Time
Brian Guarraci is a software engineer at Twitter and in his spare time he’s building a Parallella cluster with a design that was inspired by two of the most iconic supercomputers ever made.
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AI At Home Part 1: A Box Of Scraps
data centers are so cool there should be one in every house
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Apple’s boring hardware updates
Apple now seemingly considers most Mac hardware updates boring enough to skip any potential press event and just feature the new models on the Apple website for a while. Event-worthy Mac updates are now limited to entirely new products or major redesigns.
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Microcode in Intel's 8087 floating-point chip: the scale instruction
In the 1970s, floating-point arithmetic was a mess. Computer manufacturers had a dozen incompatible arithmetic standards. Moreover, floating...
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A vacuum tube ROM?
Is such a thing possible? Turns out it is, and it’s called a Monoscope. I recently got a Raytheon CK1414 Monoscope with a good getter and a working filament–naturally, I decided to fire…
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Glowing mercury thyratrons: inside a 1940s Teletype switching power supply
We recently started restoring a Teletype Model 19, a Navy communication system introduced in the 1940s. 14 This Teletype was powered by a b...
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Vintage video game cartridges with built-in modems
A lot of contemporary video game players take online communications for granted—after all, online services have been a standard feature in consoles for nearly fifteen years at this point1. However, before the ubiquity of the internet there was a time when some clever cartridges let gamers run up to the...
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The digital ranging system that measured the distance to the Apollo spacecraft
During the Apollo missions to the Moon, a critical task for NASA was determining the spacecraft's position. To accomplish this, they devel...
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Goodwatch – A Ham Radio Wristwatch (2020)
The GoodWatch is my replacement circuit board for Casio’s modern calculator watches, adding support for 70cm and 33cm amateur bands while retaining three years of battery life and most of the watch’s features. It uses the CC430F6147 chip from Texas Instruments, and the watchband forms an untuned random wire antenna…