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What is DECT-2020 New Radio (NR), and how big a deal is it? (2021)
Is it fair to describe DECT-2020 NR as a 5G wireless technology at all?
New
The latest blog posts to take off on Hacker News. 4,806 posts.
Hardware & Electronics
Any year
1262
The Apple Jonathan: A 1980s concept computer that never shipped
In the middle of the 1980s, Apple found itself with several options regarding the future of its computing platforms. The Apple II was the company’s bread and butter. The Apple III was pitched as an evolution of that platform, but was clearly doomed due to hardware and software issues. The Lisa was expensive and not…
1263
Google's First Tensor Processing Unit: Architecture
Looking in more detail at Google's first Tensor Processing Unit
1264
ZenHammer: Rowhammer attacks on AMD Zen-based platforms
Our work shows that it is possible to trigger Rowhammer bit flips on DDR4 devices on AMD Zen 2 and Zen 3 systems despite deployed TRR mitigations. This result proves that AMD systems are equally vulnerable to Rowhammer as Intel systems , which greatly increases the attack surface, considering today’s AMD market share…
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How do MRI Headphones work? (2022)
Thoughts and more by Tom Lingham
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Thoughts on Vision Pro
A month ago, I flew from London to NYC, paid $3500 for a Vision Pro headset at Apple Fifth Avenue, and flew back home. I’ve been using it every day since — here’s what I think. My background, for context: I’ve been working in AR for many years. I built...
1267
Radios, how do they work?
A brief introduction to antennas, superheterodyne receivers, and signal modulation schemes.
1268
ARM64EC (and ARM64X) Explained
ARM64EC (and ARM64X) Explained Probably the most confused looks I get from other developers when I discuss Windows and ARM64 is when I used the term " ARM64EC ". They ask is the same thing as ARM64? Is it a different instruction set than ARM64? How can you tell if an application is or ARM64 ARM64EC?
1269
Creating an autopilot in X-Plane using Python
Introduction Today’s post will take us in a slightly different direction than the last few. Today’s post will be about hooking up some Python code to the X-Plane flight simulator to enable development of an autopilot using PID (proportional-integral-derivative) controllers. I’ve been a fan of flight simulators for…
1270
Speaking without vocal cords, thanks to a new AI-assisted wearable device
The adhesive neck patch is the latest advance by UCLA bioengineers in speech technology for people with disabilities.
1271
The Intel 8088 processor's instruction prefetch circuitry: a look inside
In 1979, Intel introduced the 8088 microprocessor, a variant of the 16-bit 8086 processor. IBM's decision to use the 8088 processor in the I...
1272
Boom announces successful flight of XB-1 demonstrator aircraft
Today, Boom announced the successful flight of XB-1, the world’s first independently developed supersonic jet, at the Mojave Air & Space Port in Mojave, California. Like Overture, Boom’s supersonic airliner, XB-1 leverages state-of-the-art technologies to enable efficient supersonic flight including carbon fiber…
1273
Electronic project kits: hands on with a vintage 160-in-1 (2016)
In this day and age with the bewildering availability of electronics readily available, deciding on a project to embark on can be…
1274
Tiny Undervalued Hardware Companions
After playing/working with computers for more then 25 years I started to appreciate small but handy valuable stuff – like adapters or handlers or … yeah – all kind of stuff. With …
1275
FlipperZero: Our Response to the Canadian Government
In just a few years, Flipper Zero has become so popular that it’s now surrounded by many myths. It’s no wonder that people in power are trying to make Flipper Zero illegal. As you might have seen in the news, the Canadian government plans to ban Flipper Zero
1276
Atari Falcon030
Impressive, but too late to the party
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RP2040 Boot Sequence
This document has been assembled to supplement a set of instructions about writing one's own bootloader for the RP2040. Writing a bootloader requires some understanding of the boot sequence, but it became a bit too cumbersome to include that explanation in the bootloader documentation.
1279
How I replaced deadly garage door torsion springs (2002)
Replacing broken torsion springs on a garage door.
1280
Pine64 March update: making waves
Long awaited community update is here! Introducing PineVox and bone conduction headset (help us find a name!), IronOS progress, PineNote insights, and PineTime news! We also cover cluster failure, state of services, and the future of the community updates. See you in the upcoming Q&A!
1281
Got my ultimate retro KVM setup working
By Ruben Schade in Eora/Sydney, Australia.
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IBM 360’s are searching for a new home
Hello! If you’re still here reading this blog, I’m impressed. We haven’t posted anything of note for some years now and frankly, thats because we haven’t done anything of note with the project. The machines have been sitting in their home, virtually untouched, for 4 years now. Chris & I (Adam) are just too busy with…
1283
Hackintosh is almost dead
While I knew about and even tried various very early attempts to run macOS on non-Apple hardware, it wasn’t until early 2020 that I’ve built my first proper one. Then I built several more which are still seeing daily use.
1284
Affordable Wheel Based Refreshable Braille Display
On HN [1] I came into contact with Mahmoud Al-Qudsi ( mqudsi@neosmart.net ) , who mentioned that he'd been working off-and-on on a braille reader that is both affordable and easy to manufacture. He sent me a some files and pointed to a patent [2] that he took out on a device that uses octagonal wheels with codes on…
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Vision Pro: What we got wrong at Oculus that Apple got right
by Hugo Barra (former Head of Oculus at Meta) Friends and colleagues have been asking me to share my perspective on the Apple Vision Pro as a product. Inspired by my dear friend Matt Mullenweg̵…
1286
The Mythical Non-Roboticist
What if everyone could do robotics? That would be great, right? We should make a software framework so that non-roboticists can program robots.This idea is so close to a correct idea that it's hard to tell why it's a mistake.
1287
Reverse engineering a car key fob signal
I’ve had the curiosity to explore radio communication protocols for a few years now, ever since I’ve started fiddling around with an RTL-SDR dongle. I always had the goal of figuring out how data is transmitted in remote controls (car key fobs particularly), trying replay attacks, and other possible attack vectors.
1288
Pi 5 overclocking: Silicon Lottery
Silicon lottery. Now that the Raspberry Pi 5s been readily available (at least in most regions) for a few months, more people started messing with clocks, trying to get the most speed possible out of their Pi 5s. Unlike the Pi 4, the Pi 5 is typically comfortable at 2.6 or even 2.8 GHz, and some Pi 5s can hit 3.0 GHz…
1289
Intel Gaudi2 chips outperform Nvidia H100 on diffusion transformers
Our commitment to developing cutting-edge open models in multiple modalities necessitates a compute solution capable of handling diverse tasks with efficiency. To this end, we conducted a performance analysis, training two of our models, including the highly anticipated Stable Diffusion 3.
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Japanese Handsaws: The Maebiki Ooga
A famous blockprint by Hokusai titled “Mount Fuji Seen from the Mountains of Totomi,” showing a crew of sawyers rip-sawing a timber into boards using maebiki ooga saws, one man on top a…