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These Lessons Were Learned in Enclosure Design, But Go Far Beyond
https://hackaday.com/2019/12/18/these-lessons-were-learned-in-enclosure-design-but-go-far-beyond/

[Foaly] has been hard at work making an open-source long range camera remote, and recently shared a deeply thoughtful post about how it is never too early to consider all aspects of design, lest it cost you in the end. It all started with designing an enclosure for a working …read more (https://hackaday.com/2019/12/18/these-lessons-were-learned-in-enclosure-design-but-go-far-beyond/)
Giant 3D Printer For Giant Projects
https://hackaday.com/2019/12/18/giant-3d-printer-for-giant-projects/

Established FDM 3D printers designs generally lead themselves well to being scaled up, as long as you keep frame stiffness, alignment and movement in mind. [Ivan Miranda] needed a big printer for his big projects (videos below), so he built his own i3 style printer with a 800 mm × …read more (https://hackaday.com/2019/12/18/giant-3d-printer-for-giant-projects/)
Wonder Woman and the Real Lasso of Truth
https://hackaday.com/2019/12/18/wonder-woman-and-the-real-lasso-of-truth/

You might think it is strange that a story about technology would start off talking about Wonder Woman. When you realize the technology in question is a lie detector, you might think, “Oh, that’s right. Wonder Woman had the lasso of truth, so this is just a lame association.” You …read more (https://hackaday.com/2019/12/18/wonder-woman-and-the-real-lasso-of-truth/)
Use Blueprint Process to Print on Fabric With Lasers
https://hackaday.com/2019/12/18/use-blueprint-process-to-print-on-fabric-with-lasers/

[Shih Wei Chieh] has built a laser cyanotype printer for fabrics. You know, for art!
How do you get an inkjet head on a shoe or a couch? Most printing processes require a flat surface to print. But hearkening back to the days when a blueprint was a blueprint, a …read more (https://hackaday.com/2019/12/18/use-blueprint-process-to-print-on-fabric-with-lasers/)
Retrotechtacular: Mechanical Arithmetic For The Masses
https://hackaday.com/2019/12/18/retrotechtacular-mechanical-arithmetic-for-the-masses/

Last month we carried a piece looking at the development of the 8-bit home computer market through the lens of the British catalogue retailer Argos and their perennial catalogue of dreams. As an aside, we mentioned that the earliest edition from 1975 contained some of the last mechanical calculators on …read more (https://hackaday.com/2019/12/18/retrotechtacular-mechanical-arithmetic-for-the-masses/)
Hackaday Superconference: Nick Poole On Boggling The Boardhouse
https://hackaday.com/2019/12/18/hackaday-superconference-nick-poole-on-boggling-the-boardhouse/

By now we are all used to the role of the printed circuit board in artwork, because of the burgeoning creativity in the conference and unofficial #BadgeLife electronic badge scenes. When the masters of electronic design tools turn their hand to producing for aesthetic rather than technical reasons, the results …read more (https://hackaday.com/2019/12/18/hackaday-superconference-nick-poole-on-boggling-the-boardhouse/)
Escher: Etch-a-Sketch As A Service
https://hackaday.com/2019/12/18/escher-etch-a-sketch-as-a-service/

For better or for worse, the tech world has fully committed to pushing as many of their products into “The Cloud” as possible. Of course, readers of Hackaday see right through the corporate buzzwords. It’s all just a fancy way of saying you have to poke some server over the …read more (https://hackaday.com/2019/12/18/escher-etch-a-sketch-as-a-service/)
Watch a Sand-Cast Slingshot Made, From Start To Finish
https://hackaday.com/2019/12/18/watch-a-sand-cast-slingshot-made-from-start-to-finish/

Sand-casting metal parts is a technique that has been around for a very long time, but it can be educational to see the process from start to finish. That’s exactly what [Frederico] shows us with his sand-cast slingshot of his own design, and it’s not bad for what he says …read more (https://hackaday.com/2019/12/18/watch-a-sand-cast-slingshot-made-from-start-to-finish/)
Annealing 3D Prints: A Scientific Approach
https://hackaday.com/2019/12/18/annealing-3d-prints-a-scientific-approach/

We’ve all been taught the scientific method: Form a hypothesis, do some experiments, gather some data, and prove or disprove the hypothesis. But we don’t always do it. We will tweak our 3D prints a little bit and think we see an improvement (or not) and draw some conclusions without …read more (https://hackaday.com/2019/12/18/annealing-3d-prints-a-scientific-approach/)
Santa Claws: Sharpen Your Skills For a Good Cause
https://hackaday.com/2019/12/18/santa-claws-sharpen-your-skills-for-a-good-cause/

Want to do a bit of good this holiday season without leaving your couch or battle station? Well step right up and try your hand at Santa Claws, the charitable claw machine created by UK-based firm Liberty Games. For every toy you can maneuver to the chute, Liberty Games will …read more (https://hackaday.com/2019/12/18/santa-claws-sharpen-your-skills-for-a-good-cause/)
Universal Interface Board Comes to the Rescue of Bigger Projects
https://hackaday.com/2019/12/19/universal-interface-board-comes-to-the-rescue-of-bigger-projects/

As soon as a project involves other assemblies, parts, or modules, things get more complicated. Devices like fans, cooling units, probes, pumps, or lighting might have simple electrical requirements, but they are rarely identical. As a result, one’s tidy project ends up having to deal with, for example, a pump …read more (https://hackaday.com/2019/12/19/universal-interface-board-comes-to-the-rescue-of-bigger-projects/)
You May Trust Driverless Cars, But Do you Trust Driverless Barbers?
https://hackaday.com/2019/12/19/you-may-trust-driverless-cars-but-do-you-trust-driverless-barbers/

Although it is getting more common to have self-driving cars on the road, we have to admit we are still a bit uneasy. After all, we know first hand how hard it is to think of every case and how unreliable things can be. But what about having your hair …read more (https://hackaday.com/2019/12/19/you-may-trust-driverless-cars-but-do-you-trust-driverless-barbers/)
The Birth of the Modern Robot
https://hackaday.com/2019/12/19/the-birth-of-the-modern-robot/

When Isaac Asmiov was writing I, Robot, the field of robotics was still in its infancy. As he notes in The Complete Robot, as the field began to mature, it started showing signs of conforming to the popular ideas held by science fiction writers about what robotics ought …read more (https://hackaday.com/2019/12/19/the-birth-of-the-modern-robot/)
Learn Arduino In Time And In Tune For Christmas
https://hackaday.com/2019/12/19/learn-arduino-in-time-and-in-tune-for-christmas/

If you’re one of the lucky ten thousand today who still haven’t tried programming electronics with the Arduino platform, this detailed guide by [Dafna Mordechai] should hopefully give you enough incentive to pick it up now and make a simple bit of Christmas-themed decoration with it.
The guide isn’t exactly …read more (https://hackaday.com/2019/12/19/learn-arduino-in-time-and-in-tune-for-christmas/)
What’s an Exciton?
https://hackaday.com/2019/12/19/whats-an-exciton/

If you read the scientific literature, you see the familiar subatomic particles you learned about in school: protons, neutrons, and electrons. If you are young enough, you see others you probably heard about, too, like quarks and gluons. But recently there has been a lot of buzz about excitons and …read more (https://hackaday.com/2019/12/19/whats-an-exciton/)
Replace Your Smartphone With These Arcane Amulets
https://hackaday.com/2019/12/19/replace-your-smartphone-with-these-arcane-amulets/

It’s hard not to feel the constant pull on our limited attention from the very interesting rectangles in our pockets and packs. [Antoine Pintout] is fighting against it with three interesting pendants.
The three objects each have functions. Sablier, tells time, but rather than giving the numerals it vibrates on …read more (https://hackaday.com/2019/12/19/replace-your-smartphone-with-these-arcane-amulets/)
Degassing Epoxy Resin On The (Very) Cheap
https://hackaday.com/2019/12/19/degassing-epoxy-resin-on-the-very-cheap/

Anyone who’s tried to encapsulate something in epoxy resin knows how much of a hassle air bubbles can be. If you’re trying to get a perfectly clear finish, the last thing you want is a bunch of microscopic bubbles frozen in time. The best way to prevent this is to …read more (https://hackaday.com/2019/12/19/degassing-epoxy-resin-on-the-very-cheap/)
Super Easy Small Robot Wheels
https://hackaday.com/2019/12/19/super-easy-small-robot-wheels/

Anyone who has delved into DIY wheels knows that they are a trickier than it may seem, especially if the wheels aren’t just for show and need to provide things like decent traction and durability. 3D printers have helped a lot, but they’re not a cure-all.
Check out how [Robert …read more (https://hackaday.com/2019/12/19/super-easy-small-robot-wheels/)
A Box With A Pocket Sized Boom
https://hackaday.com/2019/12/19/a-box-with-a-pocket-sized-boom/

[Discreet Electronics Guy] sends in his very pocket sized boom box.
One thing we love about [Discreet Electronics Guy]’s projects is how they really showcase that a cool hack is possible without access to 3D printers, overnight PCB services, and other luxuries. Everything in this board is hand made by …read more (https://hackaday.com/2019/12/19/a-box-with-a-pocket-sized-boom/)
Interactive Core Memory Shield Helps Explains The Past
https://hackaday.com/2019/12/19/interactive-core-memory-shield-helps-explains-the-past/

[Andy Geppert] sends in his incredibly clever interactive core memory shield. 
In a great display of one hacker’s work being the base for another’s, [Andy] started out with [Jussi Kilpelainen]’s core memory shield for Arduino.  As he was playing with the shield he had a desire to “see” the core …read more (https://hackaday.com/2019/12/19/interactive-core-memory-shield-helps-explains-the-past/)
Programming Arduinos With Voice Commands
https://hackaday.com/2019/12/20/programming-arduinos-with-voice-commands/

Programming is a valuable skill, though one that can be daunting to learn. Throw hardware in the mix, and things ratchet up another level again. However, there are many projects that have sought to reduce the level of difficulty for newcomers. HeyTeddy is a new project that allows users to …read more (https://hackaday.com/2019/12/20/programming-arduinos-with-voice-commands/)