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CPU Made From 74HC Chips Is A Glorious Mess
Did you ever start a project that you felt gained a life of its own? This project by [Paulo Constantino] is an entire CPU named dreamcatcher on breadboards, and is a beautiful jungle of digital. On...
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Stator Library Makes Your Arduino Code Easier To Read
The readability of your code can make the difference between your project being a joy to work on, or an absolute headache. This goes double when collaborating with others. Having easily parsed code...
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Old Nixie Display Rides Again As 3D-Printer Filament Meter
We’re not sure about the name of this Nixie tube filament meter that [Scott M. Baker] built. He calls it a “filadometer”, perhaps a portmanteau of “filament” and “odometer”, in which case it makes...
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A 32-bit Boost for Your 3D Printer
It might not be the kind of thing you’ve given much thought to, but if you’ve ever used a desktop 3D printer, it was almost certainly being controlled by an 8-bit CPU. In fact, the common RAMPS...
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Improving A Conference Badge With 3D Printing
The obsession with over-the-top-hardware conference badges means that we as attendees get to enjoy a stream of weird and wonderful electronic gadgets. But for the folks putting these conferences on,...
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Big, Slow Rotary Machine Has Multiple Uses
A good majority of power tools in the average workshop are all about speed. Drills, grinders, and sanders all whizz along at thousands of revolutions per minute. Sometimes though, you need to do...
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Pluto (SDR) Goes Ethernet
Pluto may no longer be a planet, but it is still a fun software defined radio (SDR) set up from Analog Devices. The inexpensive radio uses a USB connector and looks somewhat like a network connection...
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Repairing And Upgrading A HP 16533A Scope Card
In the world of oscilloscopes, as in the rest of the test equipment world, there’s always some trickery afoot. Companies will often offer different models to the market at different price points, in...
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Bluetoothing Beautiful Phones
You’ve seen a landline phone converted into a Bluetooth headset. There’s nothing new there. It’s great for confusing kids when asking them to dial a rotary phone, but that’s about it. It’s the same...
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What’s More Accurate than a GPS Clock? The OpenPPS GPS Clock
Making a GPS clock is a relatively straightforward process on the face of it. Buy a GPS module for a few dollars, hook it up to a microcontroller board of your choice, pick the appropriate library and...
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Battle Tested Current Limiter for Cheap DC Motor Controllers
Running a brushed motor in muddy or dusty environments takes a toll on controllers, with both heavy back EMF and high stall currents. This explains one of the challenge in Europe’s Hacky Racer series,...
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3D-Printed Mobius Strip of Gears
Exploring the mathematics behind everyone’s favourite unorientable single-sided surface can be quite the mind-bending exercise, so it’s nice that it’s so easy to make a Mobius strip out of paper and a...
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Mathics: How to Do Hard Math When You’re Not an MIT Janitor
Algebra is the bane of many a student, but it is surprisingly useful when it comes to electronics. Sure, you can just memorize all the permutations of things like Ohm’s law. But it is better if you can...
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Artificial Neural Networks Help Hack Biological Counterparts
Eyes are windows into the soul, the old saying goes. They are also pathways into the mind, as much of our brain is involved in processing visual input. This dedication to vision is partly why much of...
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Robot Hummingbird Imitates Nature
Purdue’s Bio-Robotics lab has been working on a robotic hummingbird and, as you can see in the videos below, have had a lot of success. What’s more, is they’ve shared that success on GitHub. If you...
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Hackaday Links: May 12, 2019
The future of the musical instrument industry is in tiny, cheap, handheld synthesizers. They’re sold as ‘musical toys’. They bleep and bloop, and that’s about it. Korg may have just released the...
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Open Hardware E-Ink Display Just Needs an Idea
Its taken awhile, but thanks to devices like the Amazon Kindle, the cost of e-ink displays are finally at the point where mere mortals such as us can actually start using them in our projects. Now...
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Nvidia Teaching Robots To Master IKEA Kitchens
The current wave of excitement around machine learning kicked off when graphics processors were repurposed to make training deep neural networks practical. Nvidia found themselves the engine of a new...
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A Customizable Open Source Mechanical Numpad
Mechanical keyboards with reduced key counts are all the rage these days, but while those streamlined input devices might look cool on your desk, there are times when the traditional number pad or...
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Video Doorbell Focuses On Quality, Aesthetic
One of the most popular futurist tropes of the 20th century was the video intercom. Once this technology was ready, it would clearly become a mainstay of modern living overnight. Our lived reality is...
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