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New
The latest blog posts to take off on Hacker News. 3,046 posts.
Hardware & Electronics
Any year
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How a Diode Changed My Life
When you are a child, everything seems fascinating, almost everything is magical because you don't know the boundaries of what you have to discover yet.
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CCTV Cameras Sold on Amazon Come with Pre-Installed Malware
I needed a simple set of good outdoor surveillance cameras for a friends home. Like everything else I buy, I turned to Amazon. I found (what seemed like) a great deal for a set of 6 poe cameras and...
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Pine64 (64-bit quad core for $15) Quick Start Guide
RayHightower.com - Tech company founder. Commercial real estate investor. Building teams, software, and companies. Located in Phoenix, AZ, USA.
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The 3DS Cryptosystem
I think one of the biggest challenge for system engineers is designing security. Recently, at the 32c3 conference, plutoo, derrek, and smea presented a series of hacks that completely defeated the security of the 3DS. As a result, people have implemented boot-time unsigned code execution (called “arm9loaderhax” in the…
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How a Car Engine Works
Check out Animagraffs on youtube > .
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SSE: mind the gap
SSE and SSE2 are available in every single x86-family CPU with 64-bit support. You too can play around with SIMD, which is great fun! Unfortunately, SSE2 level in particular also happens to be what…
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Where's my petabyte disk drive?
Fourteen years ago I noted that disk drives were growing so fast I couldn’t fill them up. Between 1997 and 2002, storage capacity doubled every year, allowing me to replace a 3 gigabyte drive with a new 120 gigabyte model. I wrote:
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ECDSA smartphone key extraction using $2 magnetic probe
We show that modern cryptographic software on mobile phones, implementing the ECDSA digital signature algorithm, may inadvertently expose its secret keys through physical side channels: electromagnetic radiation and power consumption which fluctuate in a way that depends on secret information during the cryptographic…
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ODROID-C2 Compared to Raspberry Pi 3 and Orange Pi Plus
tl;dr: The ODROID-C2 is a very solid competitor to the Raspberry Pi model 3 B, and is anywhere from 2-10x faster than the Pi 3, depending on the operation. The software and community support is nowhere near what you get with the Raspberry Pi, but it's the best I've seen of all the Raspberry Pi clones I've tried. The…
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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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$99 Mineserver: The Devil Is in the Details
An update on my kids' Mineserver project
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I made a cheap home motion sensor and controller
After designing my first PCB , I went on a designing spree. It turns out that making PCBs (printed circuit boards, basically a piece of plastic that includes all the connections of your components in it. It helps make your project smaller and cut down on the amount of wires floating around) is so enjoyable, I’m PCBing…
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I made my own clear plastic tooth aligners and they worked
10 Mar 2016 | self-Amos , making , orthodontics , laser-scanning , prototyping , somatic feedback
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Power Wastage on an Idle Laptop
Ever since I upgraded to Windows 10 it’s felt like my battery life is worse. My suspicion was various scanning tasks that were springing to life more frequently, but it was just a hunch. So, …
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Hacking industrial vehicles from the internet
It is possible to monitor and control float trucks, public bus or delivery vans from the internet , obtaining their speed, position, and a lot other parameters. You can even control some parameters of the vehicle or hack into the canbus of the vehicle remotely.
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Cheap BlueTooth Buttons and Linux
Selfie sticks - like most modern inventions - are utter tosh. But they've rapidly brought down the price of Bluetooth buttons. So who am I to complain? Let's take the venerable AB Shutter 3 - You can find it on Amazon for around £2 including postage - or around $2 on AliExpress. Frankly, that's stupidly cheap. OK…
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555 timer teardown: inside the world's most popular IC
This article is translated into Vietnamese at: Bên trong chíp định thời 555 . If you've played around with electronic circuits, you prob...
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We Need a Better PC
My challenge: I'm trying to get a computer that doesn't suck Like lots of people I spend about half of my waking life on my laptop, so this really matters. However, I don't want a Mac. Apple...
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The Leica Q: A six month field test
An extensive review of the Leica Q camera — taken on a six month test in the field, in multiple shooting scenarios and multiple environments.
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Why I don't like smartphones
They are unequal devices. Smartphones are unapologetically devices for consumption. In this regard they differ critically from PCs, because PCs are equal devices in the sense that the same device is used for creation and consumption. This means that anyone with a PC can create as well as consume, if they so wish. This…
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WLW: 700 kHz, 500 kW, 100% modulation, no limiter (2000)
Radios with cooling ponds.
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3D printed sundial whose precise holes cast a shadow displaying the current time
The first episode of the Mojoptix video podcast: the invention of a Digital Sundial !
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Unlocking my Lenovo laptop, part 3
The decryption function If you are just joining this story you may want to start at part 1. In part 2, we discovered that a embedded controller update is performed by uploading a small 'flasher' program to the EC. This flasher program is then responsible for programming a new firmware image t
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Unlocking my Lenovo laptop battery
Introduction Two months ago, I bought a new battery for my Lenovo laptop (a ThinkPad X230T). I was about to go away on holidays and wanted a battery that could last me through a plane flight; the original battery was by then barely lasting ten minutes. Little did I know that I was about to be i