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Robotic Muscles from Fishing Line and Nichrome
Did you know that under the right conditions, nylon can be used as a type of artificial muscle? We certainly didn’t until we came across [Brandon T. Wood]’s Material Linear-Actuator for Robotics entry...
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Building A Gasometer To Store Wood Gas And Other Bio-Fuels
Old solutions are often so elegant and effective that they keep coming back. The gasometer, or gas holder, is one such example. Now [NightHawkInLight] has built one for storing the wood gas he’s been...
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A Graph Plotting Metal Detector
Metal detectors can be a great source of fun, and occasionally even found wealth. They allow the detection of metal objects at a distance, enabling hidden treasures to be discovered. They’re also...
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Dual Sensor Echo Locator Gives High Accuracy at Low Cost
Infrared certainly has its uses, but if you’re trying to locate objects, ultrasonic detection is far superior. It’s contact-less, undetectable to the human ear, and it isn’t affected by smoke, dust,...
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The Bad Old Days of Telephone Answering Machines
Telephone answering machines were almost a fad. They were hindered for years by not being allowed to connect to the phone lines. Then a mix of cell phones and the phone company offering voicemail made...
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Air Quality Readings at a Glance
Since the industrial age, air pollution has increasingly become a problem on society’s radar. Outside of concerns about global warming and greenhouse gases, particulate emissions can be highly...
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Hacked LCD Shutter Glasses See The Light
It’s always a little sad to see a big consumer technology fail. But of course, the upside for us hacker types is that the resulting fire sale is often an excellent source for hardware that might...
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Teardown Of Sonos And Amazon Smart Speakers Reveals Interesting Engineering...
Taking things apart is always fun, and this What Cracking Open a Sonos One Tells Us About the Sonos IPO”>excellent writeup of a teardown of a Sonos and Amazon smart speaker by [Ben Einstein] shows...
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Supersize DIY R/C Servos From Windscreen Wipers
We’re all familiar with the experience of buying hobby servos. The market is awash with cheap clones which have inflated specs and poor performance. Even branded servos often fail to deliver, and...
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ERRF 18: New Products Make their Debut
While ostensibly the purpose of the recent East Coast RepRap Festival (ERRF) was to celebrate the 3D printing community and culture, it should come as no surprise that more than a few companies decided...
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This Is Your Last Chance To Design The Greatest In Power Harvesting
This is your last weekend to get your project together for the Power Harvesting Challenge in this year’s Hackaday Prize. We’re looking for projects that harvest energy from the ether, and power...
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Mademoiselle Pinball Table Gets Rock ‘n Roll Makeover
Once upon a time, there was a music venue/artist collective/effects pedal company that helped redefine industry in Williamsburg, Brooklyn. That place was called Death By Audio. In 2014, it suffered a...
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Custom Circuit Makes for Better Battery Level Display
Isn’t it always the way? There’s a circuit right out of the textbooks, or even a chip designed to do exactly what you want — almost exactly. It’s 80% perfect for your application, and rather than...
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A Tale Of More Than One Amiga 1500
If you were an Amiga enthusiast back in the day, the chances are you had an Amiga 500, and lusted after a 2000 or maybe later a 3000. Later still perhaps you had a 600 or a 1200, and your object of...
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Casting a 3D Printed Extruder Body in Aluminum
Creating 3D prints is great, but sometimes you need something more durable. [Myfordboy] printed a new 3D printer extruder in PLA and then used the lost PLA method to cast it in aluminum. You can see...
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Blinging Buttons for Pick and Place
With 3D-printing, cheap CNC machines, and the huge variety of hardware available these days, really slick-looking control panels are getting to be commonplace. We’re especially fond of those nice...
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Charging USB-C Devices Off Of LiPo Battery Packs
When it was introduced in the late 90s, USB was the greatest achievement in all of computing. Gone were the PS/2 connectors for keyboards and mice, ADB ports, parallel ports, game ports, and serial...
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3D Printed Variable Area Jet Nozzle
If you’ve ever seen the back end of a military jet, you’ve likely seen variable area nozzles. They’re used to adjust the exhaust flow out of the rear of a jet engine during supersonic flight and while...
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Stepper Motor? Encoder? It’s Both!
We always think it is interesting that a regular DC motor and a generator are about the same thing. Sure, each is optimized for its purpose, but inefficiencies aside, you can use electricity to rotate...
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Interactive Mandelbrot Set Viewer Runs on FPGAs
The Mandelbrot Set is a mathematical oddity where a simple function creates an infinitely complex landscape that you can literally zoom into forever. Like most people, I’ve downloaded Mandelbrot set...
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