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New
The latest blog posts to take off on Hacker News. 144 posts.
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Evolutionary algorithms and analog electronic circuits
I've been working for a while on a program that automatically generates analog electronic circuits using evolutionary algorithms. It's still very much a work in progress, but I've used it to generate some useful circuits. Current workings of the program is as follows: Programmer decides a goal function, possible…
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New Parallella Boards
When we launched the “$99 Parallella project” on Kickstarter in 2012 , the goal was to “democratize access to supercomputing”. With a $99 price point, we knew that we would not make a profit, but we figured the value of reaching the whole world with our technology was enough of a reward for Adapteva as a company. With…
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Making an embedded Linux computer
Designing and soldering a small ARM Linux board with 217 ball BGA package and 0402 passive components
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PunchClock: Fun With iBeacons
Sometimes at Panic we build internal stuff that never sees the light of the outside world. This is one of those projects: an automatic in/out tracker for the Panic Team.
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Homemade Speakers
I had the awesome opportunity of taking the EE423 Speaker Design class offered at USC while I was going to school there. The class is taught by engineers from JBL, with some help from people like Tom Holman (the TH in THX guy!), who happens to be a researcher at USC. I learned a lot about speaker design, and ended up…
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Oculus to Acquire Carbon Design Team
We’re thrilled to announce that we’ve agreed to acquire the Carbon Design team, one of the premier industrial design and product engineering...
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Why SSD Drives Destroy Court Evidence, and What Can Be Done About It (2012)
Why SSD Drives Destroy Court Evidence, and What Can Be Done About It: Explore the challenges posed by SSD drives in preserving court evidence and discover strategies to mitigate data loss risks.
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HFS+ Bit Rot
HFS+ is a terribly old filesystem with serious flaws. I sincerely hope that Apple comes with an update of the filesystem for WWDC 2015. After all they have been working on Swift for the past 4 years and we have just learned about it last week. HFS+ is seriously old HFS+ was released in 1998, in the era of Mac OS…
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Can I drop a pacemaker 0day?
Can I drop a pacemaker 0day at DefCon that is capable of killing people? Computers now run our cars. It's now possible for a hacker to i...
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We Need Hardware Traps for Integer Overflow
How many problem domains require wrapping signed integers or non-wrapping unsigned integers? Can the current undefined case be replaced with a trap and everything else be left intact?
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I Build Supercomputers in My Spare Time
Brian Guarraci is a software engineer at Twitter and in his spare time he’s building a Parallella cluster with a design that was inspired by two of the most iconic supercomputers ever made.
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How LEDs are Made
During the 2014 trip to China, our supplier YunSun was kind enough to pick us up in Shenzhen and give us a tour of their factory.
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Pre-orders start today for Flame, the Firefox OS developer phone
Update 2014-07-15: The pre-order period has ended and the Flame is now available as a standard order, with shipping in 7-10 days. The Firefox OS Flame reference device that we ...
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Build your own drink mixing robot
I built a robot that mixes drinks named Bar Mixvah. It utilizes an Arduino microcontroller switching a series of pumps via transistors on the physical layer, and the MEAN stack (MongoDB, Express.js, Angular.js, Node.js) and jQuery for the frontend and backend. In this post, I’ll teach you how I made it. You can follow…
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Discovery's Teardrop
They are perhaps the most easily recognizable tiles in space shuttle history. For shuttle watchers, when you see them, you know exactly which shuttle you are looking at. Only space shuttles Columbia and Enterprise are more recognizable. The four other shuttles — Challenger, Discovery, Atlantis and Endeavour — aside…
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I Broke My Phone’s Screen, and It Was Awesome
So this past week has been quite a whirlwind — we wrapped up the Novena campaign and smashed all our stretch goals, concluding with over $700k raised , and I got my hair cut in a bar at midnight by none other than the skilled hands of Lenore of Evil Mad Scientist Laboratories ( I blame Jake ! :). It was an…
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Stay Classy Makerbot
MUSTANG303 tempat resmi Pikachu main slot Mustang 303 online. Akses link alternatif dimari, dapatkan bocoran RTP live tertinggi, dan raih jepe pika!
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Explanation of 44.1 kHz CD sampling rate
The CD sampling rate has to be larger than about 40 kHz to fulfill the Nyquist criterion that requires sampling at twice the maximum analog frequency, which is about 20 kHz for audio. The sampling frequency is chosen somewhat higher than the Nyquist rate since practical filters neede to prevent aliasing have a finite…
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Some small suggestions for the Intel instruction set
Programmers trying to make crypto run fast often say things like "Why can't the CPU designer just add a 128-bit multiplication instruction?" Sometimes these questions turn into academic papers analyzing the cycle counts that would be obtained from various instruction-set extensions. What's missing from most of these…