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New
The latest blog posts to take off on Hacker News. 122 posts.
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Don't use Linksys routers
Back in 2012 I gave a talk at a conference titled Blended Threats and JavaScript . I demonstrated how anybody could design an internet worm that targeted common network devices like routers and turn them into a powerful botnet that is able to monitor traffic across all types of networks. For the pr
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Making a Physical Product
Jon Paul Wheatley makes products, software, and balls.
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Why is my TI-99/4A in Black and White?
My first computer was a Texas Instruments TI-99/4A. Longtime readers may remember a previous article where we implemented TI-99/4A BASIC as a Scripting Language for modern computers. Recently I got nostalgic for the actual hardware so I got my 99 out of the closet where it had been for a decade o…
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The largest computer ever built
While cold war jets are an old interest of mine, almost everything built to fight the cold war fascinates me. All ages are characterized by madness; only a few have that madness captured in physica…
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How to run an Arduino clone on a 9V battery for weeks or even months
About a year ago, I started building wireless sensors that needed to run on a battery. I quickly found out however that this wasn’t going to be easy: A battery would only last for a few days,…
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Extreme debugging - a tale of microcode and an oven
It's been quite awhile since I debugged a computer program. Too long. Although I miss coding, the thing I miss more is the process of findin...
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CircuitLab + Electronics.StackExchange.com Integration
We are excited to announce that CircuitLab is now integrated with the Electrical Engineering Stack Exchange site! Users can now insert a CircuitLab schematic directly into their question or answer.
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How to build a $5 Arduino clone
If you are like me and build projects with Arduino, you must have felt the frustration with ripping your project apart, because you wanted to build something else with that Arduino. I have had the …
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(Presumably) Apple engineer comment on Lightning AV adapter design
We’ve been doing significant testing lately with video out using various iOS devices for an upcoming project. In doing so, we waded right in the middle of a strange video out mystery. It’s time to unravel that mystery. (Chung-chung!)
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The Chromebook Pixel
Chromebooks were designed to make computing speedy, simple and secure. For many of you, they have become the perfect, additional (and yes, a...
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180TB of Good Vibrations – Storage Pod 3.0
Get all of the latest cloud storage news and insights from Backblaze - the leading independent cloud storage provider.
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64 GB Surface Pro will only have 23 GB free
A company spokesperson has confirmed to The Verge that the 64GB edition of Surface Pro will have 23GB of free storage out of the box. The 128GB model will have 83GB of free storage. It appears that the Windows 8 install, built-in apps, and a recovery partition will make up the 41GB total on the base Surface Pro model.
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Google Giving Will Provide 15,000 Raspberry Pi's to UK Schools
Today’s been a bit unlike most Tuesdays at the Raspberry Pi Foundation. Today we’re the recipients of a very generous grant from Google Giving, which will provide 15,000 Raspberry Pi Model Bs for schoolkids around the UK. Google’s Executive Chairman, Eric Schmidt, has just been to visit Cambridge, and he and Eben have…
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Inside the ALU of the 8085 microprocessor
The arithmetic-logic unit is a fundamental part of any computer, performing addition, subtraction, and logic operations, but how it works i...
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We don't know why lithium batteries work
If you are a scientist, you confront ignorance as soon as you open your eyes. For example -- I am typing this post on a laptop computer that is powered by a lithium battery. No one has the slightest idea how and why it works. Metallic lithium can intercalate between the graphene sheets in graphite…
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Meet a Shenzhen Maker: Mr. Chen
Meet a Shenzhen Maker: Mr. Chen | Automate ALL the things!
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Ludde's FPGA NES
I was a bit bored during Christmas, so I decided to construct a whole Nintendo Entertainment System (NES) in an FPGA . An FPGA is a progra...
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The 6502 CPU's overflow flag explained at the silicon level
In this article, I show how overflow is computed in the 6502 microprocessor at the transistor and silicon level. I've discussed the mathema...
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The Factory Floor, Part 1 of 4: The Quotation (or, How to Make a BOM)
This month, I will be teaching a few MIT Media Lab graduate students and doing a bit of a “geek tour” of Shenzhen – we will visit several factories and live among the electronic markets to facilitate new directions and expand horizons in the students’ hardware-oriented research projects.