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Abusing A CPU’s Adders To Optimize Bit Counting
If you like nitpicking around C code and generated assembly language — and we’ll admit that we do — you shouldn’t miss [Scaramanga’s] analysis of what’s known as Kernighan’s trick. If you haven’t...
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A Baby Named DJ
Some of us are guilty of picking up questionable hardware from garage sales, fleamarkets, and well-meaning relatives. There is a balance between turning down a good investment and hoarding, and if we...
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Steamed Hams Localized Entirely Within A Printed Circuit Board
Maybe you’ve heard of a TV show called The Simpsons. Steamed Hams make a one-gag appearance in an unforgettable luncheon where Principal Skinner poker-faces his way out of a disaster with...
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The Feather “FAUXBERRY” Is Now A Real Thing
Last month we featured an interesting project from Hackaday.io that was essentially trying to recreate the iconic Blackberry form factor for use with Adafruit’s line of Feather development boards. This...
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Electric Wheelchair Makes A Great Base For A Big Robot
Wiring into the joystick is a quick and easy way to hack in custom control to a wheelchair. Building robots can be fun, and remains a popular pastime among many in the hacker and maker set. However the...
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The OS/2 Operating System Didn’t Die… It Went Underground
One problem with building things using state-of-the-art techniques is that sometimes those that look like they will be “the next big thing” turn out to be dead ends. Next thing you know, that hot new...
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Pi Zero Streams Video From “Fake” Security Camera
Fake security cameras are advertised as a cheap way to deter anyone who might be up to no good. This isn’t a crime and punishment blog, so we’re not really in a position to say how accurate that claim...
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Grate Design on This Cutting Edge Raspberry Pi Case
Love ’em or hate ’em, you’ve got to hand it to Apple: they really know how to push people’s buttons with design. Their industrial designers can make a product so irresistible – and their marketing...
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New Part Day: This $10 Rocking Single Board Computer Does Everything You Want
Single board computers are great, but what we really need are cheap single board computers. Running Linux on anything isn’t as good as running Linux on everything, and all that. To that end, here is...
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Salvaging Audio Amplifiers From Vintage Volvos
The common automotive scrap yard is a land of plenty for the enterprising hacker., where many items that would be prohibitively expensive elsewhere can often be had for a song. This isn’t just limited...
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Everything You Probably Didn’t Know About FOV In HMDs
VR headsets have been seeing new life for a few years now, and when it comes to head-mounted displays, the field of view (FOV) is one of the specs everyone’s keen to discover. Valve Software have...
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This Tiny TFT Pendant Is Digital Jewelry
Hackers have a multitude of skills, many are well-versed in the ways of all things that blink and flash. These abilities have often be applied to the field of jewelry and human adornment, and many...
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Monitor The Pollution On Your Commute
Commuting through the urban sprawl of a 21st century city brings exposure to significant quantities of pollution. For a Medway Makers member that meant the Isle of Dogs, London, and a drive through the...
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FPGA Soft CPU is Superscalar
We will admit it: mostly when we see a homebrew CPU design on an FPGA, it is a simple design that wouldn’t raise any eyebrows in the 1970s or 1980s. Not so with [Henry Wong’s] design, though. His...
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Coffee Tables, Computers, And Railways
If you were a British kid at any time from the 1950s to the 1980s, the chances are that your toy shop had a train set in it. Not just any train set, but a full model railway layout in a glass case...
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Banana Bomb Is Likely To Get You In Trouble
If there’s one thing Hollywood loves, it’s a ticking clock to create drama. Nuclear weapons, terrorist bombs, and all manner of other devices have been seen featuring foreboding numbers counting down...
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A Two Metre Bridge Across The Atlantic For The First Time
Amateur radio is a pursuit with many facets, some of which hold more attention than others for the hacker. Though there have been radio amateurs for a century it still has boundaries that are being...
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Home Made Gears Save This Shredder
It’s very likely that a majority of readers will have had a gear fail in a piece of equipment, causing it to be unrepairable. This is a problem particularly with plastic gears, which shed teeth faster...
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Hackaday Links: June 16th, 2019
OpenSCAD has been updated. The latest release of what is probably the best 3D modeling tool has been in the works for years now, and we’ve got some interesting features now. Of note, there’s a...
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Caching In on Program Performance
Most of us have a pretty simple model of how a computer works. The CPU fetches instructions and data from memory, executes them, and writes data back to memory. That model is a good enough abstraction...
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