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Rendering Skin Transparent Using the Food Dye Tartrazine
hackaday.com Rendering Skin Transparent Using The Food Dye TartrazineAlthough we generally assume that opacity is the normal look for animals like us humans, this factoid is only correct for as long as you maintain the dissimilar optical refraction indices of skin a…
- hackaday.com Should You Run Servo Horns Or Direct Couplings In Your RC Planes?
Whenever you buy a servo, it usually comes with a little baggie full of various plastic horns. Most of us pick our favorite and use it in our projects. Some of us hack them up, glue them back toget…
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Get Thee to Git
hackaday.com Get Thee To GitWhile version control used to be reserved for big corporate projects, it is very mainstream these days. You can attribute much of that to Git, the software that has nearly displaced other version c…
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Fun and Failure
hackaday.com Fun And FailureMy sister is a beekeeper, or maybe a meta-beekeper. She ends up making more money by breeding and selling new queen bees to other beekeepers than she does by selling honey, but that doesn’t mean th…
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Glowing Egg Is a One-Oeuf Solution for Tracking Cycles
hackaday.com Glowing Egg Is A One-Oeuf Solution For Tracking CyclesLook, if something happened to you every three weeks or so to basically turn you into a different person and factored heavily into whether any new humans were created, you’d probably want to …
- hackaday.com Getting Started With Polypropylene (PP) 3D Printing
Polypropylene (PP) is a thermoplastic that has a number of properties that sets it apart from other thermoplastics which see common use with 3D printing, including PLA, ABS and nylon (PA). Much lik…
- hackaday.com Bluetooth Version 6.0 Core Specification Released
The Bluetooth SIG recently released the core specification for version 6.0 of Bluetooth. Compared to 5.x, it contains a number of changes and some new features, the most interesting probably being …
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Large Language Models on Small Computers
hackaday.com Large Language Models On Small ComputersAs technology progresses, we generally expect processing capabilities to scale up. Every year, we get more processor power, faster speeds, greater memory, and lower cost. However, we can also use i…
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An Electric Skateboard for the Dogs
hackaday.com An Electric Skateboard For The DogsWhat’s a dog to do if they want to do some accessible skateboarding? [Simone Giertz]’s three-legged pup, [Scraps], got the chance to try a LEGO Technic board for her thrills. This elect…
- hackaday.com An Automatic Cat Feeder Built With A 4060 Binary Counter
We’ve seen a great many cat feeders over the years. Some rely on the Internet of Things, and some rely on fancy microcontrollers. [Larry Cook], on the other hand, built his using a simple 406…
- hackaday.com Ask Hackaday, What’s Next?
Writing for Hackaday involves drinking from the firehose of tech news, and seeing the latest and greatest of new projects and happenings in the world of hardware. But sometimes you sit back in a re…
- hackaday.com How Much Resolution Does Film Really Have?
Have you ever scanned old negatives or print photographs? Then you’ve probably wondered about the resolution of your scanner, versus the resolution of what you’re actually scanning. Or …
- hackaday.com 3D Print Yourself These Mini Workshop Tools
Kitting out a full workshop can be expensive, but if you’re only working on small things, it can also be overkill. Indeed, if your machining tends towards the miniature, consider building you…
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This Week in Security: EUCLEAK, Revival Hijack, and More
hackaday.com This Week In Security: EUCLEAK, Revival Hijack, And More[Thomas Roche] of NinjaLab is out with EUCLEAK, (pdf) a physical attack against Infineon security microcontrollers, and the security tokens that contain them. The name is a portmanteau of Euclidean…
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Jump Cacti With an LDR and a Pico
hackaday.com Jump Cacti With An LDR And A PicoBy now, probably everyone is familiar with the “You’re Offline” dinosaur that stars in Google’s T. Rex game. You know — jump cacti, avoid pterodactyls. Repeat until yo…
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Hackaday Podcast Episode 287: Raspberry Pi Woes, Blacker than Black, and Printing with Klipper
hackaday.com Hackaday Podcast Episode 287: Raspberry Pi Woes, Blacker Than Black, And Printing With KlipperElliot Williams is back from vacation, and he and Al Williams got together to talk about the best Hackaday posts from the last week. Of course, the Raspberry Pi RP2350 problem generated a bit of di…
- hackaday.com Hot Water Heater Hacked To Run On Solar Juice
It’s 2024, and there’s no getting around it. Grid energy is expensive. [Darrell] realized that a lot of his money was going on water heating, and he came up with a neat solution. What i…
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It’s Spreadsheets All The Way Down for This 80s Handheld
hackaday.com It’s Spreadsheets All The Way Down For This 80s HandheldUnlike the today’s consumer computer market, the 1980s were the wild west in comparison. There were all kinds of different, incompatible operating systems, hardware, and programs, all competi…
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Launching Model Airplanes With a Custom Linear Induction Motor
hackaday.com Launching Model Airplanes With A Custom Linear Induction MotorLaunching things with electromagnetism is pretty fun, with linear induction motors being a popular design that finds use from everywhere in hobby designs like [Tom Stanton]’s to the electroma…
- hackaday.com Build A Super Cheap RC Trainer Plane With Foam
Once upon a time, RC planes were expensive models that took months to build and big money to equip with electronics. Since the 20th century though, powerful batteries have become cheap, as have ser…
- hackaday.com If Wood Isn’t The Biomass Answer, What Is?
As we slowly wean ourselves away from our centuries-long love affair with fossil fuels in an attempt to reduce CO2 emissions and combat global warming, there has been a rapid expansion across a bro…
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Tactile Communication Board Speaks the Truth
hackaday.com Tactile Communication Board Speaks The TruthSometimes, simple things can make a world of difference. Take for example a non-verbal person who can’t necessarily control a touch screen in order to tell someone else what they need or want…
- hackaday.com Build Yourself A Beautiful Interactive Light Toy
Sometimes, we build things with LEDs as indicator lamps or to illuminate something important. Sometimes, we build things with LEDs purely to glow and be beautiful. This interactive light toy from […
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How Sony Mastered the Transistor
hackaday.com How Sony Mastered The TransistorWhen you think of Sony, you probably think of a technology company that’s been around forever. However, as [Asianometry] points out, it really formed in the tough years after World War II. Th…
- hackaday.com High-Speed Jelly Launcher Destroys Toast
You shouldn’t play with your food. Unless you’re designing some kind of portable cannon to fling it across the room. That’s precisely what [Backhaul Studios] did. The first step o…
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Floorboard Is a Keyboard for Your Feet
hackaday.com Floorboard Is A Keyboard For Your FeetWhether you have full use of your hands or not, a foot-operated keyboard is a great addition to any setup. Of course, it has to be a lot more robust than your average finger-operated keyboard, so b…
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Getting Root on Cheap WiFi Repeaters, the Long Way Around
hackaday.com Getting Root On Cheap WiFi Repeaters, The Long Way AroundWhat can you do with a cheap Linux machine with limited flash and only a single free GPIO line? Probably not much, but sometimes, just getting root to prove you can is the main goal of a project. I…
- hackaday.com I2C For Hackers: Digging Deeper
Last time, I gave you an overview of what you get from I2C, basics like addressing, interface speeds, and a breakdown of pullups. Today, let’s continue looking into I2C capabilities and requi…
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OpenSCAD Library Creates QR Codes on the Fly
hackaday.com OpenSCAD Library Creates QR Codes On The FlyIf you’ve been reading Hackaday for awhile, you’ll know we’re big fans of OpenSCAD around these parts. There’s a number of reasons it’s a tool we often reach for, but …
- hackaday.com The Worsening Raspberry Pi RP2350 E9 Erratum Situation
There’s currently a significant amount of confusion around the full extent of the GPIO hardware issue in the Raspberry Pi RP2350 microcontroller, with [Ian] over at [Dangerous Prototypes] of …
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Humble 555 Gets a Boost for ESR Meter
hackaday.com Humble 555 Gets A Boost For ESR Meter[Peter Demchenko] wanted to use a low power TS555 in an ESR meter design. The problem is, he needed to handle significant current sink requirements for cases where the capacitor under test had a lo…
- hackaday.com A Nibble Of Core Memory, In An SAO
Core memory, magnetized memory using tiny magnetic rings suspended on a grid of wires, is now more than five decades obsolete, yet it exerts a fascination for hardware hackers still. Not least [And…
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Big Benchy Is a Boat That Really Boats
hackaday.com Big Benchy Is A Boat That Really BoatsBenchy is that cute little boat that everyone uses to calibrate their 3D printer. [Emily The Engineer] asked the obvious question—why isn’t it a real working boat? Then she followed through o…
- hackaday.com College Gives You Practical Electronics
While classroom learning isn’t for everyone, one awesome benefit of the Internet is that you have a variety of college classes available to you, even if they aren’t for credit. You can …
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Mowing the Lawn With Lasers, For Science
hackaday.com Mowing The Lawn With Lasers, For ScienceWouldn’t it be cool if you could cut the grass with lasers? Everyone knows that lasers are basically magic, and if you strap a diode laser or two to a lawn mower, it should slice through thos…
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A Clean Linux Installation For an Android TV Box
hackaday.com A Clean Linux Installation For An Android TV BoxAlthough Android technically runs on top of Linux, generally most Android devices abstract away the underlying Linux-ness of these machines. In theory this is a good thing; we wouldn’t necess…
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A Windows Control Panel Retrospective Amidst a Concerning UX Shift
hackaday.com A Windows Control Panel Retrospective Amidst A Concerning UX ShiftOnce the nerve center of Windows operating systems, the Control Panel and its multitude of applets has its roots in the earliest versions of Windows. From here users could use these configuration a…
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Boss Byproducts: the Terrible Beauty of Trinitite
hackaday.com Boss Byproducts: The Terrible Beauty Of TrinititeWhile some byproducts recall an idyllic piece of Americana, others remind us that the past is not always so bright and cheerful. Trinitite, created unintentionally during the development of the fir…
- hackaday.com 3D Printed RC Crane Has Epic 3-Foot Reach
Have you ever looked out the window at traffic and seen a giant crane driving alone the road? Have you ever wanted a little 3D printed version you could drive for yourself without the risk of demol…
- hackaday.com Video Baby Monitor Repair Uncovers Private Data
As the name of the channel implies, [BuyItFixIt] likes to pick up cheap gadgets that are listed as broken and try to repair them. It’s a pastime we imagine many Hackaday readers can appreciat…