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CNC Embroidery Machine Punches Out Designs a Stitch at a Time
It’s doubtful that the early pioneers of CNC would have been able to imagine the range of the applications the technology would be used for. Once limited to cutting metal, CNC machines can now lance...
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A 1940s Gangster-Mobile Gets an Electric Makeover
When referring to classic cars, there’s a good reason that “they don’t make ’em like that anymore.” Old cars represented the limits of what could be done in terms of materials and manufacturing...
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Linux as a Library: Unikernels are Coming
If you think about it, an operating system kernel is really just a very powerful shared library that offers services to many programs. Of course, it is a very powerful library, but still — its main...
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Hackaday Links: November 18, 2018
The greatest bit of consumer electronics is shipping and the reviews are out: Amazon’s Alexa-enabled microwave is a capable microwave, but befuddling to the voice-controlled-everything neophyte. Voice...
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The Lost Art Of Steam Heating
We got pointed by [packrat] to a 2015 presentation by [Dan Holohan] on the history and art of steam heating systems. At the advent of central heating systems for entire buildings, steam was used...
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Fail Of The Week: When the Epoxy-Coated Chip Is Conductive
Every once in a while, you’ll find some weirdness that will send your head spinning. Most of the time you’ll chalk it up to a bad solder joint, some bad code, or just your own failings. This time it’s...
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Flywire Circuits at the Next Level
The technique of assembling circuits without substrate goes by many names; you may know it as flywiring, deadbugging, point to point wiring, or freeform circuits. Sometimes this technique is used for...
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It Might Be Possible To Build A Stingray With A Raspberry Pi
If there’s one thing that’s making you insecure, it’s your smartphone. Your smartphone is constantly pinging the cell towers, giving out your location and potentially leaking your private information...
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A Hacked Solution For Non-Standard Audio Modules
When life hands you lemons, lemonade ends up being your drink of choice. When life hands you non-standard components, however, you’ve got little choice but to create your own standard to use them....
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A Candle Powered Guitar Pedal
When it comes to guitar effects pedals, the industry looks both back and forward in time. Back to the 50’s and 60’s when vacuum tubes and germanium transistors started to define the sound of the...
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DIY Mini Helical Antennas From Salvaged Co-ax Cable
[Mare] has a visual guide and simple instructions for making DIY mini helical 868 MHz antennas for LoRa applications. 868 MHz is a license-free band in Europe, and this method yields a perfectly...
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The Electric Imp Sniffs out California Wildfires
The wildfires in California are now officially the largest the state has ever seen. Over 50,000 people have been displaced from their homes, hundreds are missing, and the cost in property damage will...
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[Ben Krasnow] Gasses MEMS Chips, for Science
Why in the world does helium kill iPhones and other members of the Apple ecosystem? Enquiring minds want to know, and [Ben Krasnow] has obliged with an investigation of the culprit: the MEMS...
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Retro Wall Phone Becomes A Doorbell, And So Much More
We have to admit that this retasked retro phone wins on style points alone. The fact that it’s filled with so much functionality is icing on the cake. The way [SuperKris] describes his build sounds...
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Little Emulators Do 8 Bits At A Time
Have you ever wondered how many, for example, Commodore 64s it would take to equal the processing power in your current PC? This site might not really answer that, but it does show that your machine...
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Simulating A Speaker
Speakers are one of those components that are simple to use, but difficult to simulate. Most of us have used a simple resistor to do the job. But a speaker’s response is much more complex, and while...
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Jittery Back Off to Speed Up
In systems where there are multiple participants who need to interact with a shared resource some sort of concurrency protection is usually appropriate. The obvious technique is to use locking (and fun...
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3D Printer Warning: Heating Plastic To High Temps is Not Healthy
If you’ve ever tried to cut a piece of acrylic with a tool designed to cut wood or metal, you know that the plastic doesn’t cut in the same way that either of the other materials would. It melts at...
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Battery Swap Keeps Sansa Clip+ Chugging
You’d be forgiven for not realizing there’s still a diehard group of people out there carrying around dedicated MP3 players. While they were all the rage a decade or so back, most consumers have since...
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Tiny Ray Tracer Fits In 64 Bytes
Throughout human history, people try to make the biggest, the fastest, and — sometimes — the smallest. [Hellmood] falls into the latter category and proves it with a 64 byte interactive 3D raycasting...
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