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Hardware & Electronics
The most popular blog posts about hardware & electronics on Hacker News. 165 posts.
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Instructions per cycle: AMD Zen 2 versus Intel
The performance of a processor is determined by several factors. For example, processors with a higher frequency tend to do more work per unit of time. Physics makes it difficult to produce processors that have higher frequency. Modern processors can execute many instructions per cycle. Thus a 3.4GHz processor has 3.4…
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Building a vacuum tube computer
Having 32 (31) registers, this means that a refresh will be issued each 256us. To be on the safe side, the capacitor should keep its charge much longer than that. Testing with both EAA91 (ideal diode) and some semiconductors: Diode charge hold time Comment EAA91 >500us ideal diode 1N4148 >500us for reference, leakage…
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Raspberry Pi Model Railway Automation
This note introduces my experiences of using the Raspberry Pi to automate a model railway.
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Real-Time Touch Controller for the Yamaha DX7 Synthesizer
George Barlow initially set out to develop a controller to be able to call up a voice preset, and then tweak from there. What he's done is essentially transformed the DX7 synth into an interactive sound designer's dream machine.
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Reviewing Bad Schematics as EE Interview Tactic
help your EE candidates strut their stuff
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Rethinking the Commodore 64 Memory Map (2018)
I've had my head down, programming away on C64 OS, and been making some great progress. I've tweeted a few things out, some of which are revealing of things I've either never talked about here or even seem to contradict what I've said here. So I'd like to take a breather and talk about some of these developments.
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Pixelbook and “Nami” Chromebooks the First to Get Linux GPU Acceleration
The Pixelbook and four other fairly new Chromebooks have the special flag to enable GPU acceleration, making these the first to get the new feature for Linux. This should bring the Android emulator and improved gaming capabilities to Project Crostini.
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Commodore 900
Click the Commodore icon to return. Intending to use pictures or text from this page? Please read this notice . Last modify 11 August 2020.
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Hidden Cam Above Bluetooth Pump Skimmer
Tiny hidden spy cameras are a common sight at ATMs that have been tampered with by crooks who specialize in retrofitting the machines with card skimmers. But until this past week I’d never heard of hidden cameras being used at gas pumps in tandem with Bluetooth-based card skimming devices.
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Software woven into wire: Core rope and the Apollo Guidance Computer
Onboard the Apollo spacecraft, the revolutionary Apollo Guidance Computer helped navigate to the Moon and land on its surface. One of the f...
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Modchips of the State
Collection of my projects and hacks.
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How to design a proper USB-C™ power sink (hint, not the way Raspberry Pi 4 did it)
This issue came up recently for a high profile new gadget that has made the transition from Micro-USB to USB-C in its latest version, the…