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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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The latest blog posts to take off on Hacker News. 247 posts.
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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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PCB design now supports LEDs and Matias switches
The Keyboard. For Professionals.
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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
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Help Make “The Essential Guide to Electronics in Shenzhen” a Reality
Readers of my blog know I’ve been going to Shenzhen for some time now. I’ve taken my past decade of experience and created a tool, in the form of a book, that can help makers, hackers, and entrepreneurs unlock the potential of the electronics markets in Shenzhen. I’m looking for your help to enable a print run of this…
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Turn your PC upside down to boot into Linux (2003)
Finally the ultra low profile memory I was waiting for arrived and so at last I had Windows XP running inside my "Windows XP Box", and one of the most compact Mini-ITX projects ever. The cooling solution with two case fans and a ducted CPU fan works like a dream and is both quiet and effective. So far it has shown no…
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Jailbreak firmware turns cheap digital walkie-talkie into DMR scanning receiver
In the last years, DMR and MOTOTRBO (a.k.a. TRBO a Motorola Solutions branded DMR Radios ) has become a very popular digital voice mode on the UHF and VHF bands and the MD380 radio is the latest cheap DMR walkie-talkie to come out of China. The question is, is it any good? The longer answer is…
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It’s Time to Open Up the GPU
GPUOpen - Our initial announcement from 2016
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A VR Cycling Experience for $40
I’ve made an Arduino thing that can wirelessly talk to a mobile device over BLE and can now meter the revolutions of a wheel with an optical tachometer. I’m using these two hardware fea…
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That Plane Overhead: Starring Our Friends SDR, ADS-B, I2C and KLGA
You may ask yourself, “How did I get here?” - Talking Heads
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Multiple cameras and motion detection on the Raspberry Pi
Learn how to access *multiple cameras* (including USB webcams and the Raspberry Pi camera module) using your Raspberry Pi, Python, and OpenCV.
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There are no secure smartphones
Modern smartphones have a CPU chip, and a baseband chip which handles radio network communications (GSM/UMTS/LTE/etc.) This chip is connected to the CPU via DMA. Thus, unless an IOMMU is used, the baseband has full access to main memory, and can compromise it arbitrarily.
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Nvidia GPUs can break Chrome's incognito mode
When I launched Diablo III, I didn’t expect the pornography I had been looking at hours previously to be splashed on the screen. But that’s exactly what replaced the black loading scree…
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802.11ah Wi-Fi Standard Approved
Wi-Fi Alliance® drives advancement and adoption of each generation of Wi-Fi®, such as Wi-Fi CERTIFIED 6® and Wi-Fi CERTIFIED 7™.