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https://hackaday.com/2022/04/20/turning-scrap-copper-into-beautiful-copper-acetate-crystals/ | Turning Scrap Copper Into Beautiful Copper Acetate Crystals | Dan Maloney | [
"chemistry hacks"
] | [
"copper",
"copper acetate",
"crystal",
"peroxide",
"vinegar"
] | Crystals, at least those hawked by new-age practitioners for their healing or restorative powers, will probably get a well-deserved eye roll from most of the folks around here. That said, there’s no denying that crystals do hold sway over us with the almost magical power of their beauty, as with
these home-grown copper... | 37 | 20 | [
{
"comment_id": "6463441",
"author": "Severe Tire Damage",
"timestamp": "2022-04-21T02:06:24",
"content": "Crystals are great. Why am I not growing more crystals.? The possibilities are endless.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6463447",
"au... | 1,760,372,721.824087 | ||
https://hackaday.com/2022/04/20/bring-precision-to-the-woodshop-with-an-electronic-router-lift/ | Bring Precision To The Woodshop With An Electronic Router Lift | Dan Maloney | [
"Tool Hacks"
] | [
"arduino",
"machining",
"router",
"router table",
"stepper",
"woodworking"
] | One of the knocks that woodworkers get from the metalworking crowd is that their chosen material is a bit… compliant. Measurements only need to be within a 1/16th of an inch or so, or about a millimeter, depending on which side of the Atlantic you’re on. And if you’re off a bit? No worries, that’s what sandpaper is for... | 13 | 8 | [
{
"comment_id": "6463433",
"author": "Marcus S",
"timestamp": "2022-04-21T01:25:26",
"content": "Dust proof stepper? I thought those cheap NEMA stepper motors were completely sealed already, other than maybe rubber wipers on the shaft bearings.It’s not like the router has any better dustproofing th... | 1,760,372,721.301962 | ||
https://hackaday.com/2022/04/20/copper-rectifying-ac-a-century-ago/ | Copper: Rectifying AC A Century Ago | Dave Rowntree | [
"History",
"Parts"
] | [
"Copper Oxide",
"diode",
"rectifier",
"Robert Murray-Smith",
"semiconductor"
] | [Robert Murray-Smith] presents for us an interesting electronic device from years gone by, before the advent of Silicon semiconductors,
the humble metal oxide rectifier
. After the electronic dust had settled following the brutal AC/DC current wars of the late 19th century — involving Edison, Tesla and Westinghouse to ... | 33 | 10 | [
{
"comment_id": "6463349",
"author": "Michael Black",
"timestamp": "2022-04-20T20:21:00",
"content": "There were copper diodes into the transistor age. I remember an article where someone took a razor charger apart, and there was a copper diode of some sort. Very small.",
"parent_id": null,
... | 1,760,372,721.019209 | ||
https://hackaday.com/2022/04/20/2022-sci-fi-contest-glowing-led-cubes-make-captivating-artifacts/ | 2022 Sci-Fi Contest: Glowing LED Cubes Make Captivating Artifacts | Lewin Day | [
"contests",
"LED Hacks"
] | [
"2022 Sci-Fi Contest",
"cube",
"LED cube"
] | LED cubes were once an exercise in IO mastery, requiring multiplexing finesse in order to drive arrays of many LEDs. Going RGB only increased the challenge. This build from [DIY GUY Chris] shows how much easier it is these days, when every LED has a smart addressable controller on board,
and serves as a great sci-fi pr... | 3 | 3 | [
{
"comment_id": "6463415",
"author": "Eric Weatherby",
"timestamp": "2022-04-20T23:32:53",
"content": "“any cyberpunk thieves that come to steal your magic glowing artifact.”That is *totally* a Quantum AI core that a party of Runners are planning to steal from Renraku in an epic heist.",
"parent... | 1,760,372,720.945046 | ||
https://hackaday.com/2022/04/20/a-rotary-encoder-how-hard-can-it-be/ | A Rotary Encoder: How Hard Can It Be? | Al Williams | [
"ARM",
"Hackaday Columns",
"Microcontrollers",
"Slider"
] | [
"encoder",
"mbed",
"quadrature encoder",
"rotary encoder"
] | As you
may have noticed
, I’ve been
working with an STM32 ARM CPU using Mbed
. There was a time when Mbed was pretty simple, but a lot has changed since it has morphed into Mbed OS. Unfortunately, that means that a lot of libraries and examples you can find don’t work with the newer system.
I needed a rotary encoder — ... | 70 | 21 | [
{
"comment_id": "6463269",
"author": "jpa",
"timestamp": "2022-04-20T17:08:09",
"content": "The Gray code aspect of encoders means that bouncing doesn’t really matter, as long as you handle the reading correctly.For interrupt driven approach, read the pin states at beginning of interrupt and compare... | 1,760,372,721.236747 | ||
https://hackaday.com/2022/04/20/this-laptop-gets-all-the-pcie-devices/ | This Laptop Gets All The PCIe Devices | Arya Voronova | [
"computer hacks",
"laptops hacks"
] | [
"eGPU",
"express card",
"external graphics card",
"mini pci express",
"mini-PCIe",
"pci express",
"PCI-E",
"PCIe",
"video card"
] | Did you ever feel like your laptop’s GPU was sub-optimal, or perhaps that your laptop could use a SAS controller? [Rob Rogers] felt like that too, so now he has the only
Dell Latitude business-class laptop that’s paired with an AMD RX580 GPU
– and more. Made possible because of a PCIe link he hijacked from the WiFi car... | 11 | 4 | [
{
"comment_id": "6463226",
"author": "Jason Pyeron",
"timestamp": "2022-04-20T15:40:40",
"content": "What about the docking port?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6463250",
"author": "FlaxWombat",
"timestamp": "2022-04-20T16:36:... | 1,760,372,721.075111 | ||
https://hackaday.com/2022/04/20/commodore-c64-the-most-popular-home-computer-ever-turns-40/ | Commodore C64: The Most Popular Home Computer Ever Turns 40 | Bil Herd | [
"Featured",
"History",
"Retrocomputing",
"Slider"
] | [
"bil herd",
"c116",
"c128",
"C264",
"C364V",
"c64",
"commodore",
"commodore business machines",
"KIM1",
"VIC-20"
] | This year marks the anniversary of the most popular selling home computer ever, the Commodore 64, which made its debut in 1982. Note that I am saying “home computer” and not personal computer (PC) because back then the term PC was not yet in use for home computer users.
Some of you have probably not heard of Commodore,... | 107 | 36 | [
{
"comment_id": "6463204",
"author": "Michael Black",
"timestamp": "2022-04-20T14:24:34",
"content": "Motorola sued Chuck Peddle twice? Motorola did release the 6800. And Mos Technology released the 6500, a 6502 that was plug in compatible with the 6800. Motorola didn’t like that one bit, hence a ... | 1,760,372,721.748258 | ||
https://hackaday.com/2022/04/20/gaskets-can-they-be-3d-printed/ | Gaskets, Can They Be 3D Printed? | Jenny List | [
"Parts"
] | [
"3d printed gasket",
"gasket",
"TPU"
] | Anyone who’s owned an older engine, whether it be in a car, motorcycle, or garden machine, will at some time have been faced with the need for a gasket. Even when the gasket is readily available there may be an imperative to fix the engine rather than wait for the part to arrive, so it’s common to make your own replace... | 74 | 19 | [
{
"comment_id": "6463154",
"author": "Andy Pugh",
"timestamp": "2022-04-20T11:15:06",
"content": "It’s not so hard to make a paper gasket using a ball-pein hammer. You tap around the edge of the part, letting the sharp edge shear the paper to the exact size. I am starting to get the impression that ... | 1,760,372,721.414302 | ||
https://hackaday.com/2022/04/20/developing-your-own-digital-film/ | Developing Your Own Digital Film | Matthew Carlson | [
"digital cameras hacks"
] | [
"cfexpress",
"M.2",
"NVMe"
] | In the olden days, you would have a roll of film that you could take to your local drug store and have them develop it. But a serious photographer would likely develop their own photos to maintain complete creative control. While photo editing software has largely replaced the darkroom of old, the images are still held... | 5 | 3 | [
{
"comment_id": "6463214",
"author": "Michael Henderson",
"timestamp": "2022-04-20T14:54:26",
"content": "Hopefully, your NVMe drive doesn’t exceed the power supply capacity of your camera. The PCIe M.2 spec allows for >2.5A of 3.3V current consumption.",
"parent_id": null,
"depth": 1,
"... | 1,760,372,721.46005 | ||
https://hackaday.com/2022/04/19/charge-your-apple-with-apples/ | Charge Your Apple With Apples | Matthew Carlson | [
"chemistry hacks",
"Engine Hacks"
] | [
"engin",
"ethanol",
"generator",
"phone charger"
] | When you think of ethanol, you might think of it as a type of alcohol, not alcohol itself. However, in reality, it is the primary ingredient in adult beverages. Which means humans have gotten quite good at making it, as we’ve been doing for a long time. With this in mind, [Sam Barker] decided to
make ethanol out of app... | 16 | 8 | [
{
"comment_id": "6463124",
"author": "echodelta",
"timestamp": "2022-04-20T07:27:54",
"content": "So many inefficiencies so much waste but it works. Bigger waste of alcohol. Loudest noise to charge a phone.A bicycle light generator is self limited to 300mA. AC to DC and some resistance, probably eas... | 1,760,372,721.127411 | ||
https://hackaday.com/2022/04/19/micromachining-with-a-laser/ | Micromachining With A Laser | Al Williams | [
"cnc hacks",
"Laser Hacks"
] | [
"cnc",
"fiber laser",
"fibre laser",
"laser"
] | [Breaking Taps] has a nice pulsed fiber laser and decided to try it to
micromachine with silicon
. You can see the results in the video below. Silicon absorbs the IR of the laser well, although the physical properties of silicon leave something to be desired. He also is still refining the process for steel, copper, and... | 3 | 1 | [
{
"comment_id": "6463326",
"author": "PWalsh",
"timestamp": "2022-04-20T18:55:25",
"content": "I was able to cut extremely thin strips of steel with a 100W Co2 laser. Grab a spark plug feeler gauge set some time and you can try it yourself.The maximum useable thickness to cut was .001″, and you can ... | 1,760,372,721.869211 | ||
https://hackaday.com/2022/04/19/oled-display-kicks-knob-up-several-accurate-notches/ | OLED Display Kicks Knob Up Several Accurate Notches | Tom Nardi | [
"hardware",
"Microcontrollers"
] | [
"digital gauge",
"knob",
"oled display",
"Volume knob"
] | As far as input devices go, the potentiometer is pretty straightforward: turn it left, turn it right, and you’ve pretty much seen all there is to see. For many applications that’s all you need, but we can certainly improve on the experience with modern technology. Enter this
promising project from [upir] that pairs a c... | 9 | 5 | [
{
"comment_id": "6463034",
"author": "Miles",
"timestamp": "2022-04-19T23:07:10",
"content": "Definitely a hack XD XDI just learned that 10 turn potentiometers with counting knobs can be had for a couple dollars.This is an amazing hack because you could switch the granularity with another button. O... | 1,760,372,721.924675 | ||
https://hackaday.com/2022/04/19/custom-fit-small-shop-crane-lightens-the-load/ | Custom-Fit Small Shop Crane Lightens The Load | Dan Maloney | [
"Tool Hacks"
] | [
"boom",
"crane",
"fabrication",
"jib",
"mast",
"metalwork",
"winch"
] | On the shortlist of workshop luxuries, we’d bet a lot of hackers would include an overhead crane. Having the ability to lift heavy loads safely and easily opens up a world of new projects, and puts the shop into an entirely different class of capabilities.
As with many of us, [Jornt] works in a shop with significant sp... | 13 | 7 | [
{
"comment_id": "6462989",
"author": "OHS",
"timestamp": "2022-04-19T21:22:37",
"content": "That lack of end-stop makes me nervous. Looks like it makes him nervous too.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6462994",
"author": "HaHa",
"timesta... | 1,760,372,722.695565 | ||
https://hackaday.com/2022/04/19/2022-sci-fi-contest-the-animatronic-baby-yoda-youve-always-wanted/ | 2022 Sci-Fi Contest: The Animatronic Baby Yoda You’ve Always Wanted | Lewin Day | [
"contests",
"Toy Hacks"
] | [
"2022 Sci-Fi Contest",
"baby yoda",
"Grogu",
"sci-fi",
"star wars"
] | Simple robot parts make up the internals.
When it comes to sci-fi, it’s hard to go past
Star Wars,
and many submissions to our contest land in that exact universe. [Kevin Harrington]’s entry is one such example, with his animatronic Baby Yoda
that’s exactly as cute as you’d hope it would be.
The build is based on
a Pol... | 2 | 2 | [
{
"comment_id": "6463159",
"author": "GYRE",
"timestamp": "2022-04-20T11:32:04",
"content": "this implies we wanted anything to do with a baby yoga",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6463256",
"author": "Snow",
"timestamp": "2022-04-20T16:3... | 1,760,372,722.647641 | ||
https://hackaday.com/2022/04/19/mobile-focused-windows-11-leaves-taskbar-stuck-along-the-bottom/ | Mobile-Focused Windows 11 Leaves Taskbar Stuck Along The Bottom | Kristina Panos | [
"Hackaday Columns",
"Rants",
"Slider"
] | [
"design",
"taskbar",
"user experience design",
"Windows 11"
] | Yeah, I’ll admit it: I’m a Windows person. Two years ago this summer, I traded in an overworked Windows 7 laptop that was literally screaming in pain for a SFF Windows 10 box as my main machine. But 10 might mean the end for this scribe, who has used Windows since the late 1980s. Admittedly, it’s for a fairly petty rea... | 96 | 32 | [
{
"comment_id": "6462876",
"author": "rclark",
"timestamp": "2022-04-19T17:12:41",
"content": "I prefer my taskbar on the bottom. That said, M$ should give those people still on Windows the option to move the taskbar where-ever they want. Even multiple taskbars if that is to your liking. We all ha... | 1,760,372,722.501194 | ||
https://hackaday.com/2022/04/19/a-line-follower-with-no-brains/ | A Line Follower With No Brains | Jenny List | [
"Robots Hacks"
] | [
"friction",
"line follower",
"robot"
] | A line follower is a common project for anyone wishing to make a start in robotics, a small wheeled device usually with some kind of optical sensor which allows it to follow a line drawn on the surface over which it runs. In most cases they incorporate a small microcontroller or perhaps an analogue computer which suppl... | 26 | 14 | [
{
"comment_id": "6462836",
"author": "monsonite",
"timestamp": "2022-04-19T15:39:48",
"content": "There was a line follower in one of the UK electronic magazines back in the mid 1970s – possibly “Everyday Electronics”.",
"parent_id": null,
"depth": 1,
"replies": [
{
"commen... | 1,760,372,722.361288 | ||
https://hackaday.com/2022/04/19/arm-pumps-up-the-volume-with-mbed-and-a-potentiometer/ | Arm Pumps Up The Volume With Mbed And A Potentiometer | Al Williams | [
"ARM",
"Featured",
"Skills",
"Slider",
"Software Development"
] | [
"arm",
"blackpill",
"mbed"
] | Last time, I
told you how to get started
with the “Black Pill” STM32F411 board using the Mbed OS. The example program, admittedly, didn’t use many of the features of the OS, unless you count what the USB serial port driver uses behind the scenes. However, this time, we’ll make a practical toy that lets you adjust your ... | 7 | 5 | [
{
"comment_id": "6462834",
"author": "Daniel",
"timestamp": "2022-04-19T15:32:51",
"content": "I’ve been working on an Engine Control Unit using the black pill. Love the fact that the black pill has a Floating Point Unit. It really increases the computational power over something like a bluepill. Ho... | 1,760,372,722.553187 | ||
https://hackaday.com/2022/04/19/edible-electronics-let-us-hear-the-lamentations-of-the-chocolate-bunnies/ | Edible Electronics Let Us Hear The Lamentations Of The Chocolate Bunnies | Kristina Panos | [
"Arduino Hacks",
"Holiday Hacks",
"how-to"
] | [
"arduino",
"chocolate bunny",
"edible circuits"
] | Yet another
Day of the Chocolate Bunnies
has passed by, and what did you do to mark the occasion? You likely kicked back and relaxed, surrounded by whatever you gave up for Lent, but good for you if you mixed chocolate and electronics like [Repeated Failure] did. They created
a completely edible chocolate Easter bunny ... | 12 | 8 | [
{
"comment_id": "6462761",
"author": "KC8KVA",
"timestamp": "2022-04-19T12:13:32",
"content": "I am SO going to do something similar next year for Easter. This made my day!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6462776",
"author": "Belga",
... | 1,760,372,722.743403 | ||
https://hackaday.com/2022/04/19/bare-metal-gives-this-pi-some-classic-synths/ | Bare Metal Gives This Pi Some Classic Synths | Jenny List | [
"Musical Hacks",
"Raspberry Pi"
] | [
"dx7",
"fm synthesis",
"raspberry pi",
"yamaha"
] | We’re used to seeing the Raspberry Pi crop up in a wide range of the projects we show you here, but it’s fair to say that they usually feature some sort of operating system. There’s another way to use a Pi, more akin to using a microcontroller such as the Arduino: by programming it directly, so-called bare-metal progra... | 18 | 9 | [
{
"comment_id": "6462756",
"author": "Bill Gates",
"timestamp": "2022-04-19T11:51:51",
"content": "nice! A lot of expensive equipment replaced with a tiny little box. I checked on ebay, these things are going for $2000+, it’s insane what people want for old technology.",
"parent_id": null,
"... | 1,760,372,722.602827 | ||
https://hackaday.com/2022/04/18/ray-traced-doom-really-shines/ | Ray-Traced Doom Really Shines! | Jonathan Bennett | [
"Games",
"Software Hacks"
] | [
"does it run doom",
"ray tracing"
] | We’re huge fans of taking retro games and adding new graphics features to them, so you had to know that when [Sultim Tsyrendashiev] released
his ray-traced Doom engine
, we would have to cover it. Now this does break with tradition — instead of running Doom on every conceivable platform, this version requires an AMD or... | 13 | 6 | [
{
"comment_id": "6462611",
"author": "hinspect",
"timestamp": "2022-04-19T05:15:41",
"content": "This reminds me of playing Wolfenstein back in 1995 on my EISA Bus 486. I assume it was a DOS version. It sure was a lot of fun back then!",
"parent_id": null,
"depth": 1,
"replies": [
... | 1,760,372,722.791782 | ||
https://hackaday.com/2022/04/18/honey-did-you-feed-the-lamp-company-wants-to-create-living-light-bulbs/ | Honey, Did You Feed The Lamp? Company Wants To Create Living Light Bulbs | Al Williams | [
"News"
] | [
"bacteria",
"bioluminescence",
"lighting"
] | The BBC’s [Peter Yeung] had an interesting post about
a small French town experimenting with using bioluminescent organisms to provide lighting
. A firm called
Glowee
is spearheading the effort in Rambouillet and other towns throughout France, using a variety of biological techniques to harness nature’s light sources.
... | 30 | 14 | [
{
"comment_id": "6462602",
"author": "Ostracus",
"timestamp": "2022-04-19T04:57:58",
"content": "EMP proof lighting.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6462621",
"author": "Kryptylomese",
"timestamp": "2022-04-19T05:50:08",
"content": "... | 1,760,372,722.916369 | ||
https://hackaday.com/2022/04/18/2022-sci-fi-contest-schrodingers-trigger-is-trained-on-electrons-not-cats/ | 2022 Sci-Fi Contest: Schrödinger’s Trigger Is Trained On Electrons, Not Cats | Kristina Panos | [
"contests"
] | [
"electron tunneling",
"reverse bias",
"schrodingers cat",
"tunneling"
] | While it’s true that Hackaday scribes and their families are sadly unable to compete in our contests, Hackaday alum are more than welcome to throw their hat in the ring. [Legionlabs] even made a game of it — they used only parts from the scrap heap, and even played beat the clock to build
a real, science-fictiony, work... | 20 | 8 | [
{
"comment_id": "6462466",
"author": "Tom Price",
"timestamp": "2022-04-18T23:29:46",
"content": "Please tell me that no cats were killed in the making of this machine",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6462476",
"author": "Jerry",
... | 1,760,372,722.8543 | ||
https://hackaday.com/2022/04/18/the-epic-journey-of-repairing-an-hp-9830a-desktop-computer-from-the-1970s/ | The Epic Journey Of Repairing An HP 9830A Desktop Computer From The 1970s | Robin Kearey | [
"Repair Hacks",
"Retrocomputing"
] | [
"computer repair",
"HP9830A",
"vintage computers"
] | We love our retrocomputers here at Hackaday, and we’re always delighted to see someone rescue an historic artefact from the landfill. Sometimes, all it takes is replacing a broken power switch or leaky capacitor; other times you need to bring out the oscilloscope and dig deeper into internal circuitry. But the huge amo... | 10 | 6 | [
{
"comment_id": "6462451",
"author": "smellsofbikes",
"timestamp": "2022-04-18T22:57:35",
"content": "This was my first computer, and it was interesting to use: very limited memory, weird Rocky Mountain Basic dialect of the BASIC language. The cassette drive was kinda dodgy even back then, and the ... | 1,760,372,723.055957 | ||
https://hackaday.com/2022/04/18/build-your-own-cat-some-assembly-required/ | Build Your Own Cat – Some Assembly Required | Arya Voronova | [
"Robots Hacks"
] | [
"3D printed pets",
"pet",
"robot",
"robot cat",
"robotic animals",
"roboticcat"
] | Robotic pets are sci-fi material, and [Kevin McAleer] from [Kev’s Robots] is moving us all ever so closer towards a brighter, happier, more robotic future. One of his latest robot builds,
PicoCat, is a robot cat with servo-driven paws
. It follows in the footsteps of
the OpenCat project
made by Dr. Rongzhong Li back in... | 4 | 3 | [
{
"comment_id": "6462481",
"author": "Hirudinea",
"timestamp": "2022-04-18T23:54:15",
"content": "But it’s not furry and it doesn’t have a bum to stick in your face! Still good, but some things to work on for V2.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id":... | 1,760,372,723.106154 | ||
https://hackaday.com/2022/04/18/ask-hackaday-would-a-scooter-get-you-back-to-the-office/ | Ask Hackaday: Would A Scooter Get You Back To The Office? | Kristina Panos | [
"Ask Hackaday",
"Hackaday Columns",
"Slider"
] | [
"electric scooter",
"google",
"working from home"
] | So we’re two plus years into the pandemic at this point. Are you still working from home in the most comfortable clothes ever sewn? We figure that of the lot of you who said goodbye to that drab, tiled carpet in 2020, most have probably heard rumblings about returning to the office. And probably a good portion have at ... | 73 | 23 | [
{
"comment_id": "6462283",
"author": "Darren",
"timestamp": "2022-04-18T17:10:19",
"content": "NoA. Privately owned e scooters are illegal to use in my country (UK).B. I am more productive and happier at home.C. Scooters are not an ideal transport method in a country where it rains half of the year.... | 1,760,372,723.823788 | ||
https://hackaday.com/2022/04/18/movie-prop-electronics-hack-chat/ | Movie Prop Electronics Hack Chat | Dan Maloney | [
"Hackaday Columns",
"Slider"
] | [
"Hack Chat"
] | Join us on Wednesday, April 20 at noon Pacific for the
Movie Prop Electronics Hack Chat
with Ben Eadie!
It wasn’t too long after the invention of cinema that the need for special effects became apparent. If you want to tell stories, especially the science fiction type of story, you need to build a plausible universe, i... | 7 | 3 | [
{
"comment_id": "6462306",
"author": "Feinfinger (super villain in nostalgy mode)",
"timestamp": "2022-04-18T17:56:27",
"content": "Illudium Q-36 Explosive Space Modulator?Someone?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6462309",
"author": "t... | 1,760,372,723.349475 | ||
https://hackaday.com/2022/04/18/gun-safe-made-safer-with-lithium-battery-upgrade/ | Gun Safe Made Safer With Lithium Battery Upgrade | Arya Voronova | [
"Weapons Hacks"
] | [
"firearm",
"gun safe",
"Li-ion",
"Lithium-ion battery",
"pistol safe",
"safe"
] | A proper gun safe should be difficult to open, but critically, allow instant access by the authorized party.
[Dr. Gerg] got a SnapSafe
and discovered that, while it was quite easy to use, it would also lock the owner out easily whenever the batteries would run out. Meant to be used with four AAA batteries and no way to... | 37 | 13 | [
{
"comment_id": "6462166",
"author": "miked",
"timestamp": "2022-04-18T15:47:55",
"content": "Adding an explosive device made it safer? Really?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6462180",
"author": "sjm4306",
"timestamp": "2022-0... | 1,760,372,723.665622 | ||
https://hackaday.com/2022/04/18/mercury-thrusters-a-worldwide-disaster-averted-just-in-time/ | Mercury Thrusters: A Worldwide Disaster Averted Just In Time | Lewin Day | [
"Current Events",
"Featured",
"Original Art",
"Science",
"Slider",
"Space"
] | [
"hall effect",
"hall effect thruster",
"ion propulsion",
"ion thruster",
"mercury thruster",
"satellite",
"space",
"space vehicle",
"spacecraft"
] | The field of space vehicle design is obsessed with efficiency by necessity. The cost to do anything in space is astronomical, and also heavily tied to launch weight. Thus, any technology or technique that can bring those figures down is prime for exploitation.
In recent years, mercury thrusters promised to be one such ... | 60 | 11 | [
{
"comment_id": "6462018",
"author": "Dude",
"timestamp": "2022-04-18T14:44:52",
"content": "And again the baby is out with the bathwater. There’s no reason to ban them – if there is something better then everyone will use that. If there isn’t, then forcing the case just hurts the industry for virtu... | 1,760,372,723.519057 | ||
https://hackaday.com/2022/04/18/vintage-computer-festival-east-is-this-weekend/ | Vintage Computer Festival East Is This Weekend | Tom Nardi | [
"cons",
"News"
] | [
"VCF",
"VCF East",
"VCF East 2022"
] | This weekend the InfoAge Science and History Museum in Wall, New Jersey will
once again play host to the Vintage Computer Festival East
— the annual can’t-miss event for anyone who has even a passing interest in the weird and wonderful machines that paved the way for the supercomputers we now all carry around in our po... | 1 | 1 | [
{
"comment_id": "6462461",
"author": "gregg4",
"timestamp": "2022-04-18T23:19:32",
"content": "And all of you who are going will find a Timelord there.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,372,723.392944 | ||
https://hackaday.com/2022/04/18/gridfinity-3d-printed-super-quick-tool-storage-and-retrieval/ | Gridfinity: 3D Printed Super Quick Tool Storage And Retrieval | Dave Rowntree | [
"Tool Hacks"
] | [
"3d printed",
"modular",
"open source",
"quick retrieval",
"tool storage"
] | Our favourite cyborg [Zack Freedman] has been stumbling over a common problem many of us will be all too familiar with — that of tool storage and the optimal retrieval thereof. His solution is the
Gridfinity: A modular workshop organisation system
.
Never chase your pen around on the desk again
In [Zack]’s words, the p... | 32 | 8 | [
{
"comment_id": "6461462",
"author": "Andrew",
"timestamp": "2022-04-18T10:42:50",
"content": "Can I get the key dimensions and re-do it in OpenSCAD? kthxbye!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6461507",
"author": "lthemick",
"tim... | 1,760,372,723.592468 | ||
https://hackaday.com/2022/04/17/processing-audio-with-the-rp2040/ | Processing Audio With The RP2040 | Bryan Cockfield | [
"Microcontrollers"
] | [
"adc",
"arm",
"audio",
"digital signal processing",
"dsp",
"effects",
"guitar",
"pwm",
"raspberry pi",
"rp2040"
] | The Raspberry Pi, although first intended as an inexpensive single-board computer for use in education, is now ubiquitous in electronics communities. Its low price as well as Linux platform and accessible GPIO make it useful in many places outside the classroom. But, if you want to abandon the ease-of-use in favor of a... | 9 | 2 | [
{
"comment_id": "6460790",
"author": "M",
"timestamp": "2022-04-18T05:12:10",
"content": "Has anyone put a 2040 on an arduino uno style board yet?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6461561",
"author": "Owlman",
"timestamp": "2022... | 1,760,372,723.710408 | ||
https://hackaday.com/2022/04/17/drill-press-piece-fastening-101/ | Drill Press Piece Fastening 101 | Arya Voronova | [
"Tool Hacks"
] | [
"c-clamp",
"clamp",
"clamps",
"drill press",
"drilling",
"hold down",
"vise"
] | What are the options you have for securing your workpiece to the drill press table?
[Rex Krueger] shows us that there’s plenty
, and you ought to know about them. He goes through the disadvantages of the usual C-clamps, and shows options like the regular drill press vice and a heavy-duty version that even provides a wo... | 16 | 6 | [
{
"comment_id": "6460665",
"author": "RÖB",
"timestamp": "2022-04-18T04:17:55",
"content": "The main image (before you play the video) give a lot away.I drill press vice somehow seems to a better tool that the alternatives he has described.But ultimately safety is an endless journey as there are alw... | 1,760,372,723.873919 | ||
https://hackaday.com/2022/04/17/hackaday-links-april-17-2022/ | Hackaday Links: April 17, 2022 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links",
"Slider"
] | [
"apollo 11",
"canon",
"drone",
"hackaday links",
"heatsink",
"Honda",
"moon dust",
"Orlan",
"regolith",
"russia",
"skiving",
"takedown",
"uav",
"ukraine",
"windows 95"
] | There are plenty of stories floating around about the war in Ukraine, and it can be difficult to sort out which ones are fact-based, and which are fabrications. Stories about the technology of the war seem to be a little easier to judge, and so stories about
an inside look at a purported Russian drone reveal
a lot of i... | 26 | 10 | [
{
"comment_id": "6460044",
"author": "Ostracus",
"timestamp": "2022-04-18T00:07:26",
"content": "“We get the the need to protect IP, but preventing people from printing a replacement windshield washer tank cap seems overly aggressive.”Once 3D printing and scanning matures It’ll do to design IP what ... | 1,760,372,723.93382 | ||
https://hackaday.com/2022/04/17/the-555-gives-the-carolinacon-badge-life/ | The 555 Gives The CarolinaCon Badge Life | Jenny List | [
"cons"
] | [
"555",
"badgelife",
"Carolinacon"
] | For the electronic badge enthusiast, these last two years have seen something of a famine. While the pandemic may not be over yet, we’re learning to live with it in 2022, and there’s the prospect of a flush of new badges even if not all events are in-person yet. First to reach us is the
Carolinacon Online 2 badge
, a f... | 1 | 1 | [
{
"comment_id": "6459617",
"author": "Ken",
"timestamp": "2022-04-17T20:52:19",
"content": "“As a memento and a way to support the event it fits the bill, but it’s fair to say that this is no electronic tour de force.”As a tool to solicit promotion to the hacker community via Hackaday it was a compl... | 1,760,372,723.970464 | ||
https://hackaday.com/2022/04/17/measuring-electromagnetic-fields-with-just-an-arduino-and-a-piece-of-wire/ | Measuring Electromagnetic Fields With Just An Arduino And A Piece Of Wire | Robin Kearey | [
"Tool Hacks"
] | [
"antenna",
"electromagnetic interference",
"emf detector"
] | Electromagnetic interference problems can be a real headache to debug. If you need to prove what causes your WiFi to slow down or your digital TV signal to drop, then the ability to measure electromagnetic fields (EMF) can be a big help. Professional equipment is often very expensive, but building an EMF detector yours... | 9 | 5 | [
{
"comment_id": "6459631",
"author": "RW ver 0.0.3",
"timestamp": "2022-04-17T20:58:31",
"content": "Interesting… wonder if it can pulse another pin and radiate that, so you can make a nonlinear junction detector.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": ... | 1,760,372,724.013012 | ||
https://hackaday.com/2022/04/15/multicolor-drawbot-highlights-importance-of-limit-switches/ | Multicolor Drawbot Highlights Importance Of Limit Switches | Lewin Day | [
"cnc hacks"
] | [
"core xy",
"CoreXY",
"multicolor plotter",
"plotter"
] | Plotters and drawing robots are fun projects that let you create art with all the precision and perfection that computer numerical control can deliver. [TUENHIDIY] demonstrates that ably with the
Multicolor DrawBot
.
The build relies on a simple XY Cartesian design, using a pair of NEMA 17 stepper motors. It’s built in... | 5 | 3 | [
{
"comment_id": "6457517",
"author": "Andrew",
"timestamp": "2022-04-15T20:43:06",
"content": "It’s not impossible to line up each colour without limit switches (which in this case should be called homing switches). The coordinates don’t change between jobs, so if you didn’t have homing switches the... | 1,760,372,724.053465 | ||
https://hackaday.com/2022/04/15/2022-sci-fi-contest-motorized-at-at-walker-gets-around-with-servos/ | 2022 Sci-Fi Contest: Motorized AT-AT Walker Gets Around With Servos | Lewin Day | [
"contests",
"Robots Hacks"
] | [
"2022 Sci-Fi Contest",
"AT-AT",
"star wars",
"walker"
] | The AT-AT Walker was one of the more fearsome weapons of the Star Wars universe, even if it was incredibly slow and vulnerable to getting tangled up in Rebel tow cables. However, you can build your own small-scale example using servos for propulsion,
as [Luke J. Barker] ably demonstrates.
Taking off the outer shell rev... | 6 | 2 | [
{
"comment_id": "6457482",
"author": "Mhajicek",
"timestamp": "2022-04-15T18:49:46",
"content": "Even seeing the Walker as a little kid I knew it was a horribly stupid design. Slow, vulnerable, heavy, and expensive.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_... | 1,760,372,724.239184 | ||
https://hackaday.com/2022/04/15/the-2022-hackaday-prize-hack-chat-kicks-things-off/ | The 2022 Hackaday Prize Hack Chat Kicks Things Off | Tom Nardi | [
"contests",
"Hackaday Columns",
"The Hackaday Prize"
] | [
"2022 Hackaday Prize",
"Hack Chat"
] | The 2022 Hackaday Prize is on, and we’ve already seen some incredible submissions by folks who believe their idea just might have what it takes to make the world a better place. But as with all contests, it’s good to understand all the rules before you get too involved. We promise nothing’s hidden in the fine print, bu... | 0 | 0 | [] | 1,760,372,724.429242 | ||
https://hackaday.com/2022/04/15/hackaday-podcast-164-vintage-nasa-soldering-mouse-bites-attiny85-graphics-and-pvc-pontoons/ | Hackaday Podcast 164: Vintage NASA Soldering, Mouse Bites, ATTiny85 Graphics, And PVC Pontoons | Tom Nardi | [
"Hackaday Columns",
"Podcasts"
] | [
"Hackaday Podcast"
] | Join Hackaday Editor-in-Chief Elliot Williams and Managing Editor Tom Nardi as they review the most interesting hacks and stories of the previous week. This time we’ll start things off by talking about the return of in-person events, and go over several major conventions and festivals that you should add to your calend... | 1 | 1 | [
{
"comment_id": "6462319",
"author": "Chris Muncy",
"timestamp": "2022-04-18T18:23:53",
"content": "When I was in school for electronics engineering (back in the 80’s) we all carried the tradition pink pencil erasures specifically to clean edge card connectors. Worked like a charm and made the coppe... | 1,760,372,724.380932 | ||
https://hackaday.com/2022/04/15/printable-carbide-opens-up-interesting-possibilities/ | Printable Carbide Opens Up Interesting Possibilities | Al Williams | [
"3d Printer hacks",
"News"
] | [
"3d printed metal",
"cemented carbide"
] | Sandvik, a large company headquartered in Sweden, has apparently been producing cemented carbide for a long time — according to them, since 1932. The material is known for being highly wear-resistant. Now the company says they have
a process to 3D print the material
. You can see a video about the new material, below.
... | 23 | 2 | [
{
"comment_id": "6457449",
"author": "Paul",
"timestamp": "2022-04-15T16:38:12",
"content": "Sounds like something Dan Gelbart could do with his Rapidia company.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6457543",
"author": "Rumble_in_the_Jungle... | 1,760,372,724.852502 | ||
https://hackaday.com/2022/04/15/this-week-in-security-openssh-git-and-sort-of-nginx-0-day/ | This Week In Security: OpenSSH, Git, And Sort-of NGINX 0-day | Jonathan Bennett | [
"Hackaday Columns",
"News",
"Security Hacks"
] | [
"Git",
"nginx",
"This Week in Security"
] | OpenSSH has
minted their 9.0 release
, and it includes a pair of security changes. Unlike most of the releases we cover here, this one has security hardening to prevent issues, not emergency fixes for current ones. First up, the venerable scp/rcp protocol has been removed. Your
scp
commands will now use SFTP under the ... | 20 | 7 | [
{
"comment_id": "6457420",
"author": "Frankel",
"timestamp": "2022-04-15T14:44:17",
"content": "I know what a quantum computer with 4095 qubits cannot break: My 4096 bit key.google:>how many qubits 2022>The plan includes building intermediate-size machines of 127 and 433 qubits in 2021 and 2022Guess... | 1,760,372,724.630306 | ||
https://hackaday.com/2022/04/15/mini-darktower-clone-restores-your-childhood/ | MiniDarkTowerClone Restores Your Childhood | Kristina Panos | [
"Toy Hacks"
] | [
"board game",
"classic game",
"Feather S2",
"momentary buttons",
"TFT LCD"
] | Remember
DarkTower
? No? Well, it’s a really cool combination board game, RPG, and computer game from 1981. Orson Welles pimped it on TV and explained it thusly: “collect three keys, lay siege to the tower, and defeat the enemy within”. The Tower itself was a battery-powered computer on lazy Susan that showed numbers o... | 9 | 6 | [
{
"comment_id": "6457384",
"author": "Alex",
"timestamp": "2022-04-15T12:14:19",
"content": "Restoration Games did a version called “Return to Dark Tower” as well:https://restorationgames.com/return-to-dark-tower/",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id"... | 1,760,372,724.528235 | ||
https://hackaday.com/2022/04/16/iot-pool-monitor-helps-you-keep-it-crystal-clear/ | IoT Pool Monitor Helps You Keep It Crystal Clear | Lewin Day | [
"home hacks",
"Microcontrollers"
] | [
"ESP32",
"pool",
"pool controller"
] | Having a pool is great, but it also requires significant monitoring and maintenance to keep it crystal clear and clean. The OPNpool controller from [Coert Vonk] aims to help in this task,
integrating neatly into the smart home ecosystem of today.
OPNpool runs on an ESP32, and is capable of monitoring pool controllers, ... | 5 | 3 | [
{
"comment_id": "6457958",
"author": "Ton VAN KAAM",
"timestamp": "2022-04-16T21:49:36",
"content": "Great idea Coert. How well is the reception of wifi in combination with the esp32. I’ve build an Internet radio and used also an esp32, but I had to add an external antenna to boost the reception (6d... | 1,760,372,724.571304 | ||
https://hackaday.com/2022/04/16/easy-extensible-open/ | Easy, Extensible, Open | Elliot Williams | [
"Hackaday Columns",
"News",
"Rants"
] | [
"hardware",
"open source"
] | I’m a huge DIY’er. I don’t like to buy things when I can build them myself. But honestly, that doesn’t always end up in the optimal allocation of my time, when viewed from a getting-stuff-done perspective. Sometimes, if you’ve got a bigger project in mind, the right way is the quick way, and the quick way is buying som... | 16 | 8 | [
{
"comment_id": "6457832",
"author": "mgrusin",
"timestamp": "2022-04-16T14:39:29",
"content": "“Simple things should be simple. Complex things should be possible.”– Alan Kay (while working at PARC)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6457962",
... | 1,760,372,724.681839 | ||
https://hackaday.com/2022/04/16/tiny-pneumatic-tool-made-from-a-single-ish-bolt/ | Tiny Pneumatic Tool Made From A Single(-ish) Bolt | Dan Maloney | [
"Tool Hacks"
] | [
"engraving",
"graving",
"metalworking",
"pneumatic",
"single-bolt",
"stainless"
] | We’ve noticed a couple of things about the “Widget from a Single Bolt” genre of metalworking videos. The first thing is that almost all of them need to use a freakishly large bolt, and many of them also rely on other materials to complete the build. And secondly, these builds all pretty much depend on a lathe to transf... | 17 | 4 | [
{
"comment_id": "6457784",
"author": "Alex99a",
"timestamp": "2022-04-16T12:12:56",
"content": "If he used a hand drill as an impromptu lathe then he used a lathe and it isn’t a lathe-less build.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6457786",
... | 1,760,372,724.798048 | ||
https://hackaday.com/2022/04/16/paper-tape-reader-self-calibrates-speaks-usb/ | Paper Tape Reader Self-calibrates, Speaks USB | Donald Papp | [
"Arduino Hacks",
"Peripherals Hacks"
] | [
"arduino",
"optical",
"paper tape",
"punched tape",
"retrocomputing",
"tape reader",
"usb",
"vintage computing"
] | Input devices consisting of optical readers for punched paper tape have been around since the earliest days of computing, so why stop now? [Jürgen]’s
Paper Tape Reader
project connects to any modern computer over USB, acting like a serial communications device. Thanks to the device’s automatic calibration, it works wit... | 22 | 12 | [
{
"comment_id": "6457731",
"author": "BT",
"timestamp": "2022-04-16T08:46:38",
"content": "Nicely made, nicely documented.I almost wish I had a need for a paper tape reader!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6457735",
"author": "bob",
... | 1,760,372,724.743652 | ||
https://hackaday.com/2022/04/15/calculating-pi-on-the-4004-cpu-intels-first-microprocessor/ | Calculating Pi On The 4004 CPU, Intel’s First Microprocessor | Lewin Day | [
"Misc Hacks"
] | [
"4004",
"caculating pi",
"cpu",
"intel 4004",
"Pi"
] | These days we are blessed with multicore 64-bit monster CPUs that can calculate an entire moon mission’s worth of instructions in the blink of an eye. Once upon a time, though, the state of the art was much less capable; Intel’s first microprocessor, the 4004, was built on a humble 4-bit architecture with limited instr... | 26 | 9 | [
{
"comment_id": "6457679",
"author": "that_jojo",
"timestamp": "2022-04-16T05:21:58",
"content": "I was looking at building some 4004-based educational boards to help my work team understand the operation of a simple computer but good lord I didn’t realize how expensive they were at this point. So p... | 1,760,372,724.915983 | ||
https://hackaday.com/2022/04/15/javascript-is-everywhere-even-msdos/ | Javascript Is Everywhere. Even MSDOS | Al Williams | [
"Retrocomputing"
] | [
"javascript",
"msdos"
] | Although pundits have joked that Java’s “write once, run everywhere” slogan might be better expressed as “write once, debug everywhere,” a relative of Java — JavaScript — has delivered on both promises better than its namesake. Thanks to its proliferation in browsers, JavaScript is a veritable lingua franca of computer... | 35 | 16 | [
{
"comment_id": "6457637",
"author": "ian 42",
"timestamp": "2022-04-16T02:19:04",
"content": "I’d prefer (for java) “write once, doesn’t run anywhere”. I’ve never seen something written in java that shouldn’t have been written in something else..",
"parent_id": null,
"depth": 1,
"replie... | 1,760,372,725.068432 | ||
https://hackaday.com/2022/04/15/2022-sci-fi-contest-a-friendly-wall-drawing-robot/ | 2022 Sci-Fi Contest: A Friendly Wall Drawing Robot | Lewin Day | [
"cnc hacks"
] | [
"cnc",
"drawing",
"drawing robot"
] | Drawing on walls is fine for children, but adults tend to get bored quickly with such antics. Even more so when they realize who is responsible for cleaning up afterwards. Instead, consider delegating those duties to a friendly helper by the name of Fumik,
as [engineer2you] has done.
Fumik, who looks like a cute little... | 8 | 6 | [
{
"comment_id": "6457595",
"author": "r4m0n",
"timestamp": "2022-04-15T23:33:19",
"content": "Sure, this is the contest entry post, but you guys already posted about this project last month…https://hackaday.com/2022/03/10/fumik-an-arduino-wall-drawing-robot-jellyfish/Also, there’s not a single tag i... | 1,760,372,725.000198 | ||
https://hackaday.com/2022/04/17/solaris-might-be-free-if-you-want-it/ | Solaris Might Be Free If You Want It | Al Williams | [
"News",
"Software Hacks"
] | [
"solaris",
"sun",
"unix"
] | There was a time when “real” engineering workstations ran
Linux
Unix. Apollo and Sun were big names and Sun’s version was Solaris. Solaris has been an iffy proposition since Oracle acquired Sun, but Oracle announced last month that you can download and use
Solaris 11.4 CBE free for non-production use
.
Do you care? If ... | 58 | 28 | [
{
"comment_id": "6458713",
"author": "BT",
"timestamp": "2022-04-17T14:03:33",
"content": "“There was a time when “real” engineering workstations ran Linux.”I think you meant Unix, not Linux.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6458717",
"author... | 1,760,372,725.159949 | ||
https://hackaday.com/2022/04/17/laptop-usb-c-charging-hack-lets-you-leave-the-brick-at-home/ | Laptop USB-C Charging Hack Lets You Leave The Brick At Home | Dan Maloney | [
"laptops hacks"
] | [
"brick",
"charger",
"laptop",
"power supply",
"USB C",
"wall wart"
] | At their best, laptops are a compromise design. Manufacturers go to great lengths to make the slimmest, lightest, whatever-est laptops possible, and the engineering that goes into doing so is truly amazing. But then they throw in the charger, which ends up being a huge brick with wire attached to it, and call it a day.... | 47 | 13 | [
{
"comment_id": "6458439",
"author": "Jonathan Holmes",
"timestamp": "2022-04-17T12:01:22",
"content": "This is great!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6458521",
"author": "Joe Gaz",
"timestamp": "2022-04-17T12:39:56",
"content": "Tha... | 1,760,372,727.052889 | ||
https://hackaday.com/2022/04/17/kicad-plugin-gives-your-pcbs-that-handmade-look/ | KiCAD Plugin Gives Your PCBs That Handmade Look | Al Williams | [
"Software Hacks"
] | [
"KiCAD",
"pcb",
"Printed Circuit Board"
] | The first PCBs we built involved a draftsman laying out large pieces of tape. The finished artwork would be photographically reduced to produce the board. This solved a few problems. It was easier to work on the large pieces and any errors were reduced by the scale amount. Boards from this era have a distinct appearanc... | 29 | 15 | [
{
"comment_id": "6458132",
"author": "Artenz",
"timestamp": "2022-04-17T08:29:46",
"content": "It is certainly not true that you can send “any design” and it will get “etched to perfection”. Even when I request electrical checks, I have received boards that turn out to have shorts. Making your desi... | 1,760,372,727.383382 | ||
https://hackaday.com/2022/04/16/taking-a-close-look-at-parallel-plate-capacitors/ | Taking A Close Look At Parallel Plate Capacitors | Al Williams | [
"Parts"
] | [
"capacitors",
"physics"
] | Of course, we all know that capacitors are conceptually two conductors separated by a dielectric of some sort. But outside of air-variable capacitors you normally don’t see them looking like that. For example, a film capacitor has its plates rolled up in a coil with an insulating film in between. You can’t really see t... | 16 | 6 | [
{
"comment_id": "6458090",
"author": "Valeriu Sprintu",
"timestamp": "2022-04-17T05:24:41",
"content": "Very good presentation for beginners.They should take care that SMD capacitor line marking is for ++++",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "645812... | 1,760,372,726.768161 | ||
https://hackaday.com/2022/04/16/a-neat-little-tool-to-reset-the-fuses-on-your-attiny/ | A Neat Little Tool To Reset The Fuses On Your ATtiny | Robin Kearey | [
"ATtiny Hacks",
"Tool Hacks"
] | [
"attiny",
"boost converter",
"hv programming"
] | If you’re an experienced hacker, you’ve probably run into a problem at some point and thought “let’s make a tool to automate that”. A few hours later you’ve got your tool, but then realize that the amount of work you put into making the tool vastly exceeds what you would have needed to solve the original problem manual... | 8 | 4 | [
{
"comment_id": "6459435",
"author": "happy",
"timestamp": "2022-04-17T19:26:41",
"content": "It is a beautiful device.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6462150",
"author": "Twisty Plastic",
"timestamp": "2022-04-18T15:41:35",
"conten... | 1,760,372,726.709992 | ||
https://hackaday.com/2022/04/16/rss-printer-gives-you-the-hard-copy-news-you-desire/ | RSS Printer Gives You The Hard Copy News You Desire | Lewin Day | [
"classic hacks",
"Microcontrollers"
] | [
"news",
"news ticker",
"thermal printer"
] | The days of yore saw telex machines and dot-matrix printers with continuous feed paper churning out data in hardcopy form in offices around the world. [Jan Derogee] wanted a bit of that old-school charm, and set about building a RSS news printer using
a venerable old printer in his possession.
The build relies on an ES... | 23 | 6 | [
{
"comment_id": "6457987",
"author": "Misterlaneous",
"timestamp": "2022-04-16T23:17:05",
"content": "This would have been super cool in 2005, but print is dead. Waste of resources.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6458035",
"author": "... | 1,760,372,727.322302 | ||
https://hackaday.com/2022/04/16/can-you-help-solve-the-mystery-of-this-1930s-tv/ | Can You Help Solve The Mystery Of This 1930s TV? | Jenny List | [
"home entertainment hacks"
] | [
"crt",
"television",
"tv"
] | 84 years ago, a teenager built a TV set in a basement in Hammond, Indiana. The teen was a radio amateur, [John Anderson W9YEI], and since it was the late 1930s the set was a unique build — one of very few in existence built to catch one of the first experimental TV transmitters on air at the time, W9XZV in Chicago. We ... | 23 | 10 | [
{
"comment_id": "6457936",
"author": "Ken",
"timestamp": "2022-04-16T20:30:56",
"content": "Oh great, so we’re blaming the ‘boob tube’ on radio amateurs now? LOL",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6457943",
"author": "Amiable Ninja",
"times... | 1,760,372,726.923982 | ||
https://hackaday.com/2022/04/15/this-diy-updi-programmer-is-nice-and-cheap/ | This DIY UPDI Programmer Is Nice And Cheap | Donald Papp | [
"Arduino Hacks",
"Microcontrollers"
] | [
"arduino",
"AVR",
"microcontoller programming",
"UPDI",
"usb"
] | [Daumemo] likes experimenting with DIY electronics, and like many people, eventually ran across an AVR microcontroller with a Unified Program and Debug Interface (UPDI). One option is of course to purchase an UPDI programmer, but an even better solution was to
make a DIY USB version from nice, cheap parts
.
Programming... | 3 | 2 | [
{
"comment_id": "6457425",
"author": "Severe Tire Damage",
"timestamp": "2022-04-15T15:16:27",
"content": "Is an Arduino Nano a bit overpowered in this role?Since you asked. No. About right actually.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6457919",
... | 1,760,372,726.968221 | ||
https://hackaday.com/2022/04/14/weve-heard-of-bricking-a-hard-drive-but/ | We’ve Heard Of Bricking A Hard Drive, But… | Al Williams | [
"Retrocomputing"
] | [
"fraud",
"retrocomputing",
"scam"
] | Mass storage has come a long way since the introduction of the personal computer. [Tech Time Traveller] has an interesting video about the dawn of PC hard drives focusing on a company called
MiniScribe
. After a promising start, they lost an IBM contract and fell on hard times.
Apparently, the company was faking invent... | 38 | 20 | [
{
"comment_id": "6457317",
"author": "Eric Weatherby",
"timestamp": "2022-04-15T06:01:29",
"content": "“Once they discovered the incorrect inventory, they not only set out to alter the company’s records to match it, but they also broke into an outside auditing firm’s records to change things there, ... | 1,760,372,727.192009 | ||
https://hackaday.com/2022/04/14/a-nitrogen-soldering-iron-review/ | A Nitrogen Soldering Iron Review | Al Williams | [
"Reviews"
] | [
"nitrogen",
"soldering",
"soldering iron"
] | If you’ve ever welded, you know that some welders blow a shield gas over the work for different reasons. For example, you often use a gas to displace oxygen from the area and avoid oxidation. You can also solder using a nitrogen shield. This allows higher temperatures and a reduction of flux required in the solder. Wav... | 30 | 13 | [
{
"comment_id": "6457289",
"author": "CRJEEA",
"timestamp": "2022-04-15T03:02:08",
"content": "This seems like it would be something, at least not entirely out of the realms of possibility, that someone could build themselves, if all be it not as polished, no doubt much less expensive. A small secti... | 1,760,372,727.119513 | ||
https://hackaday.com/2022/04/14/engineering-on-a-deadline-for-squid-game/ | Engineering On A Deadline ForSquid Game | Adam Fabio | [
"hardware"
] | [
"ESP8266",
"MrBeast",
"Squid Game",
"william osman"
] | If you asked us for an epic tale of designing and building under a deadline, one of the last places we would think to look is a
MrBeast
video. Yet here we are, thanks in no small part to the
epic skills of one [William Osman]
.
What do you do when a major YouTube celebrity asks you to handle a project with an impossib... | 35 | 15 | [
{
"comment_id": "6457235",
"author": "Braddo",
"timestamp": "2022-04-15T00:15:02",
"content": "TLDW",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6457237",
"author": "skrubis",
"timestamp": "2022-04-15T00:18:49",
"content": "the vide... | 1,760,372,727.263819 | ||
https://hackaday.com/2022/04/14/the-simplest-electro-mechanical-telephone-exchange-that-actually-works/ | The Simplest Electro-Mechanical Telephone Exchange That Actually Works | Robin Kearey | [
"classic hacks",
"Phone Hacks"
] | [
"analog telephony",
"pots",
"telephone exchange"
] | While rarely seen by users, the technology behind telephone exchanges is actually quite interesting. In the first hundred or so years of their existence they evolved from manually-operated switchboards to computer-controlled systems, but in between those two stages was a time when dialling and switching was performed e... | 34 | 15 | [
{
"comment_id": "6457162",
"author": "Col. Panek",
"timestamp": "2022-04-14T20:36:48",
"content": "The coolest relays are the ones which stepped two ways. They’d step up for the first number, then over for the second. So they had like 100 contacts in one deck, and there were two or 3 decks. I forgo... | 1,760,372,727.454489 | ||
https://hackaday.com/2022/04/14/2022-sci-fi-contest-nixie-calculator-is-resplendent-in-walnut-enclosure/ | 2022 Sci-Fi Contest: Nixie Calculator Is Resplendent In Walnut Enclosure | Lewin Day | [
"contests"
] | [
"2022 Sci-Fi Contest",
"calculator",
"nixie tube",
"nixie tubes"
] | The Nixie tube is one of the most popular display technologies amongst the hacker and maker set. Glowing numerals can warm even the coldest heart, particularly when they’re energized with hundreds of volts. [ohad.harel] used these glorious displays to build the TORI Nixie Calculator,
with beautiful results.
The build u... | 8 | 6 | [
{
"comment_id": "6457129",
"author": "BT",
"timestamp": "2022-04-14T18:50:07",
"content": "Beautiful it may be but once again I feel tricked into following a link to an advert. No schematics or other project files, just a link to a web site where you can buy one.",
"parent_id": null,
"depth"... | 1,760,372,727.496196 | ||
https://hackaday.com/2022/04/14/remoticon-2021-jeroen-domburg-sprite_tm-hacks-the-buddah-flower/ | Remoticon 2021 // Jeroen Domburg [Sprite_tm] Hacks The Buddah Flower | Elliot Williams | [
"cons",
"Hackaday Columns",
"Reverse Engineering"
] | [
"2021 Hackaday Remoticon",
"8051",
"badge hacking",
"hacking",
"rickroll",
"sprite_tm"
] | Nobody likes opening up a hacking target and finding a black epoxy blob inside, but all hope is not lost. At least not if you’ve got the dedication and skills of [Jeroen Domburg] alias [Sprite_tm].
It all started when [Big Clive] ordered a chintzy Chinese musical meditation flower and found a black blob. But tantalizin... | 10 | 5 | [
{
"comment_id": "6457142",
"author": "David Given",
"timestamp": "2022-04-14T19:32:27",
"content": "Hey, congratulations!I was one of the people on the thread, and did some work teaching the new instructions to ghidra to reverse engineer the ROM (ghidra is _awesome_), but after several failed attemp... | 1,760,372,727.547826 | ||
https://hackaday.com/2022/04/13/2022-sci-fi-contest-a-hand-following-robot-powered-by-arduino/ | 2022 Sci-Fi Contest: A Hand-Following Robot, Powered By Arduino | Lewin Day | [
"Robots Hacks"
] | [
"arduino",
"robot",
"ultrasonic"
] | If there’s one thing audiences love in sci-fi, it’s a cute robot companion that follows the heroes around. If you want one of your own,
starting with this build from [mircemk] could be just the ticket
.
The build relies on the classic Arduino Uno microcontroller, which talks to a HC-SR04 ultrasonic sensor module and tw... | 0 | 0 | [] | 1,760,372,727.582197 | ||
https://hackaday.com/2022/04/13/home-made-stirling-engines-from-expedient-materials/ | Home Made Stirling Engines From Expedient Materials | Jenny List | [
"Engine Hacks"
] | [
"stirling",
"stirling cycle",
"stirling engine"
] | Many of us have read about Stirling engines, engines which form mechanical heat pumps and derive motion from the expansion and contraction of a body of air. A very few readers may have built one, but for many they remain one of those projects we’d rather like to try but never quite have the inclination.
The YouTube cha... | 28 | 12 | [
{
"comment_id": "6456094",
"author": "fiddlingjunky",
"timestamp": "2022-04-13T19:04:53",
"content": "Stirling engines found a home in AIP (a catch-all term for subs in the traditional “diesel” class with improved underwater loiter/travel endurance) subs for a time. The Swedish Gotland-class, which ... | 1,760,372,727.645249 | ||
https://hackaday.com/2022/04/13/the-future-of-energy-storage-on-both-sides-of-the-meter/ | The Future Of Energy Storage On Both Sides Of The Meter | Maya Posch | [
"Engineering",
"Hackaday Columns",
"Slider"
] | [
"grid storage",
"Heat pump",
"hydrogen storage",
"thermal energy storage"
] | That energy storage is a hot topic is hardly a surprise to anyone these days. Even so, energy storage can take a lot of different forms, some of which are more relevant to the utility provider (like grid-level storage), while others are relevant to business and home owners (e.g. whole-house storage), and yet other tech... | 81 | 17 | [
{
"comment_id": "6456069",
"author": "Dude",
"timestamp": "2022-04-13T17:42:02",
"content": "“The result of this has been that the peaks got a lot taller and the valleys a lot deeper.”Let’s have look at what the situation actually looks like.https://techxplore.com/news/2022-04-youve-heard-droughts-e... | 1,760,372,728.265765 | ||
https://hackaday.com/2022/04/13/nixie-spectrum-display-has-seven-bands/ | Nixie Spectrum Display Has Seven Bands | Al Williams | [
"home entertainment hacks"
] | [
"IN-13",
"in13",
"nixie"
] | A spectrum visualizer is always a fun project, but we really liked [Yannick99]’s take on it since it uses
seven IN-13 Nixie tubes for the display
. The tubes, of course, need high voltage so part of the project is a high voltage power supply. The spectrum part is a little more ordinary using an op amp and an MSGEQ7 fil... | 4 | 4 | [
{
"comment_id": "6456096",
"author": "echodelta",
"timestamp": "2022-04-13T19:09:48",
"content": "So this EQ7 chip for a display of the 7 band audio spectrum must be put in many box style stereo systems with the big glory display.I had to go through all the ways to try and adjust what we took to be ... | 1,760,372,728.390716 | ||
https://hackaday.com/2022/04/13/arming-with-an-os/ | Arming With An OS | Al Williams | [
"ARM",
"Featured",
"Microcontrollers",
"Skills",
"Slider"
] | [
"arm",
"blackpill",
"mbed",
"stm32"
] | We see tons of projects with the infamous “Blue Pill” STM32 boards. They are cheap and plentiful and have a lot of great features, or at least they were before the chip shortage. I recently picked up a “Black Pill”, which is very similar but has an even more powerful processor. For a few bucks, you get an ARM CPU that ... | 28 | 13 | [
{
"comment_id": "6456046",
"author": "Drone",
"timestamp": "2022-04-13T15:30:20",
"content": "It seems to me the Blue Pill / Black Pill boards have pretty-much merged these days – if you can get one. I have a small herd of them. The newer boards (even if a couple years old) are blue or black, and al... | 1,760,372,727.92907 | ||
https://hackaday.com/2022/04/13/nasa-hardware-techniques-soldering-space-electronics-like-its-1958/ | NASA Hardware Techniques: Soldering Space Electronics Like It’s 1958 | Dave Rowntree | [
"hardware",
"History"
] | [
"assembly",
"nasa",
"soldering",
"space race",
"vintage"
] | [PeriscopeFilms] on YouTube has many old TV adverts and US government reels archived on their channel, with some really interesting subjects to dive in to. This first one we’re highlighting here is a
1958 film about NASA Soldering Techniques
(Video, embedded below), which has some fascinating details about how things w... | 44 | 17 | [
{
"comment_id": "6455992",
"author": "Al Williams",
"timestamp": "2022-04-13T11:25:41",
"content": "https://hackaday.com/2016/08/09/hot-wire-strippers-are-probably-the-best-tool-you-arent-using/",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6456051",
... | 1,760,372,728.090868 | ||
https://hackaday.com/2022/04/13/desktop-soundbar-is-ideal-for-pc-use/ | Desktop Soundbar Is Ideal For PC Use | Lewin Day | [
"computer hacks",
"digital audio hacks"
] | [
"computer speakers",
"soundbar",
"surround sound"
] | Soundbars are a rather strange category of speaker, most typically used with televisions to add some punch that the drivers crammed into a flatscreen TV simply can’t match. [Matt] of
DIY Perks
wanted a soundbar that was better suited to use on a computer desk rather than in a loungeroom,
and set about creating one.
Reg... | 17 | 7 | [
{
"comment_id": "6455990",
"author": "punkdigerati",
"timestamp": "2022-04-13T11:23:21",
"content": "I’m not sure if that can really be classified as a sound bar. Monitor stand with built in speakers perhaps.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "64... | 1,760,372,728.143882 | ||
https://hackaday.com/2022/04/12/lego-fourteen-segment-display-needs-plenty-of-motors/ | Lego Fourteen-Segment Display Needs Plenty Of Motors | Lewin Day | [
"Misc Hacks",
"Toy Hacks"
] | [
"14 segment",
"14-seg",
"14-segment display",
"lego"
] | Hackers love 7-segment displays, and will gladly wax lyrical about the silly words you can
almost
spell on them and so on. Less appreciated are their bigger cousins, the fourteen and sixteen segment displays, which get all alphanumeric about things and are thus much easier for humans to read. You can even build the for... | 1 | 1 | [
{
"comment_id": "6456013",
"author": "Abe",
"timestamp": "2022-04-13T12:49:17",
"content": "Cool, lego version of the tube B7971 …it shall be dubbed L7971 ;)",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,372,728.30839 | ||
https://hackaday.com/2022/04/12/hacking-an-experimental-esa-satellite/ | Hacking An Experimental ESA Satellite | Lewin Day | [
"Space"
] | [
"ESA",
"hack",
"satellite",
"satellite hack"
] | Hacking these days means everything from someone guessing your password and spamming your contacts with toxic links, to wide-scale offensive cyberattacks against infrastructure by sophisticated operators backed by nation states. When it comes to hacking satellites, though, [Didelot Maurice-Michel]
found himself tanglin... | 5 | 3 | [
{
"comment_id": "6455917",
"author": "Carsten",
"timestamp": "2022-04-13T02:17:54",
"content": "Please pay special attention to the last paragraph, where it is revealed that the HackCYSAT quietly cancelled the event without really telling the people who had submitted applications.Bad look if you ask... | 1,760,372,728.348711 | ||
https://hackaday.com/2022/04/12/bungee-corded-bass-zither-really-slaps/ | Bungee-Corded Bass Zither Really Slaps | Kristina Panos | [
"Musical Hacks"
] | [
"bass",
"bungee cord",
"zither"
] | Surely we’ve all played some bass riffs on a stretched-out rubber band before, right? [Nicolas Bras] found that the ultimate musical rubber bands are bungee cords, and used seven of them to build
a double-bass zither that can be plucked or struck with drumsticks
. Be sure to check it out in the build/demo video after t... | 13 | 9 | [
{
"comment_id": "6455888",
"author": "Hirudinea",
"timestamp": "2022-04-12T23:18:59",
"content": "” He also made custom bridges … which … look like little row houses.” I think they look more like Monopoly Hotels, he should paint them red. Anyway I love this, it looks simple enough for me to build (w... | 1,760,372,728.444629 | ||
https://hackaday.com/2022/04/12/hall-effect-module-knows-where-your-motor-is/ | Hall Effect Module Knows Where Your Motor Is | Al Williams | [
"Parts"
] | [
"hall effect",
"magnetic encoder",
"magnetometer",
"MLX90393",
"shaft encoder"
] | If you have a motor and you’d like to know where the shaft position is, you are likely to turn to an optical encoder scheme. However, as [lingib] points out, you can also use
a magnet and a magnetometer
. You can see how it works in the video below.
The MLX90393 is a 3-axis hall effect device and, with a magnet on the ... | 22 | 13 | [
{
"comment_id": "6455853",
"author": "Taylorian",
"timestamp": "2022-04-12T20:27:14",
"content": "https://www.youtube.com/watch?v=kbFRWaNAWDg&ab_channel=AvELet us not forget resolvers.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6456060",
"author"... | 1,760,372,728.499981 | ||
https://hackaday.com/2022/04/12/skip-the-shipping-print-your-own-cable-chains/ | Skip The Shipping, Print Your Own Cable Chains | Lewin Day | [
"Parts"
] | [
"3D printed parts",
"cable chain"
] | CNC machines and 3D printers tend to have plenty of cabling which must be neatly managed while the machine moves. If not properly taken care of, wires can easily end up tangled in the moving bits leading to a dead machine at best, and some kind of raucous fire at worst. [Nikodem Bartnik] decided to create his own cable... | 11 | 7 | [
{
"comment_id": "6455834",
"author": "Twisty Plastic",
"timestamp": "2022-04-12T19:18:11",
"content": "“The benefit of cable chains is that they stop cables splaying everywhere while still allowing them to move as needed with the axes”Well, yah, they do that. They also enforce a minimum bend radius ... | 1,760,372,728.54883 | ||
https://hackaday.com/2022/04/12/ask-hackaday-is-it-time-for-waste-heat-and-cold-area-heating-to-shine/ | Ask Hackaday: Is It Time For Waste Heat And Cold Area Heating To Shine? | Jenny List | [
"green hacks",
"Hackaday Columns",
"Slider"
] | [
"area heating",
"gas",
"heat pumps",
"waste heat"
] | It’s difficult to escape the topic of energy supply at the moment, with the geopolitical situation surrounding the invasion of Ukraine leaving the natural gas supply to an entire continent in jeopardy. Fortunately we’re watching the green shoots of an early spring here in the Northern hemisphere so the worst of the win... | 82 | 22 | [
{
"comment_id": "6455795",
"author": "Alan McIntyre",
"timestamp": "2022-04-12T17:23:33",
"content": "I’m glad to see systems like this being discussed more often. It’s annoying to see a bigass plume of steam being dumped into the air during the winter by some industrial process right across the ro... | 1,760,372,728.666263 | ||
https://hackaday.com/2022/04/12/mindblowing-graphics-from-an-attiny85/ | Mindblowing Graphics From An ATtiny85 | Elliot Williams | [
"ATtiny Hacks",
"Microcontrollers",
"Software Hacks"
] | [
"attiny85",
"graphics",
"library",
"oled screen",
"sprites"
] | [Görg Pflug] wrote in with his
really nice graphics library
. It’s got multiple layers, two text consoles, greyscale, internal halftoning, and sprites. It can pull off a number of classic graphics tricks and demos. Oh yeah, and did we mention it runs on a
freaking ATtiny85
and an I2C OLED screen?!
This is an amazing pi... | 24 | 9 | [
{
"comment_id": "6455784",
"author": "McNugget",
"timestamp": "2022-04-12T16:10:49",
"content": "This is impressive for an attiny85.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6455794",
"author": "G0bol",
"timestamp": "2022-04-12T17:19:16... | 1,760,372,728.791904 | ||
https://hackaday.com/2022/04/12/scientists-are-now-declaring-new-species-via-photos-and-video/ | Scientists Are Now Declaring New Species Via Photos And Video | Lewin Day | [
"Featured",
"Interest",
"Original Art",
"Science",
"Slider"
] | [
"new species",
"noaa",
"science",
"species",
"taxonomy",
"zoology"
] | Identifying new species is key to the work of zoologists around the world. It’s an exciting part of research into the natural world, and being the first to discover a new species often grants a scientists naming rights that can create a legacy of one’s work that lasts long into the future.
Traditionally, the work of ta... | 22 | 8 | [
{
"comment_id": "6455762",
"author": "DainBramage",
"timestamp": "2022-04-12T14:38:34",
"content": "While I can see the value of using such methods to assist in the identification of creatures like ctenophores and their cousins, I don’t like the idea of classifying species without the benefit of DNA... | 1,760,372,728.73332 | ||
https://hackaday.com/2022/04/12/warm-up-your-extruders-reprap-festivals-are-back/ | Warm Up Your Extruders, RepRap Festivals Are Back | Tom Nardi | [
"cons",
"News"
] | [
"East Coast RepRap Festival",
"Midwest RepRap Festival",
"reprap festival"
] | Like pretty much every other large gathering, the Midwest and East Coast RepRap Festivals had to be put on hold during the height of the COVID-19 pandemic. But now that the United States is cautiously returning to something that looks a lot like normal, both Festivals have now confirmed they will be back to full-scale ... | 5 | 3 | [
{
"comment_id": "6455745",
"author": "dudenamedben",
"timestamp": "2022-04-12T12:59:17",
"content": "luckily the orlando maker faire only skipped one year instead of two. good ol’ florida noticed that a society should function in the face of fear rather than cower. because of that tons of kids an... | 1,760,372,729.084797 | ||
https://hackaday.com/2022/04/12/a-v2-rocket-inspired-steam-turbine-skateboard-is-just-around-the-corner/ | A V2 Rocket Inspired Steam Turbine Skateboard Is Just Around The Corner | Dave Rowntree | [
"Engine Hacks"
] | [
"3d printed",
"catalyst",
"CNC machined",
"hydrogen peroxide",
"reaction turbine",
"steam engine"
] | [Integza] never fails to amuse with his numerous (and sometimes really sketchy) attempts to create usable thrust, by pretty much all means possible and the latest video (embedded below)
attempting to run a reaction turbine from decomposing hydrogen peroxide
, doesn’t fail to disappoint. The inspiration came from the
WW... | 19 | 6 | [
{
"comment_id": "6455719",
"author": "dudenamedben",
"timestamp": "2022-04-12T08:47:58",
"content": "While I am not a huge fan of the whole ethos of youtube monetization, I do appreciate that many people still have the ability to learn and own and pass on various skills that would otherwise be lost ... | 1,760,372,729.326062 | ||
https://hackaday.com/2022/04/11/this-chariot-is-pulled-by-a-team-of-motorcycles/ | This Chariot Is Pulled By A Team Of Motorcycles | Jenny List | [
"Transportation Hacks"
] | [
"chariot",
"motorcycle",
"motorcycle chariot"
] | We’re fans of unusual forms of transport here, so when we saw
an article featuring a home-made motorcycle chariot
we knew we had to share it with you. You’ll probably notice it comes from the keyboard of our colleague [Lewin Day] as he moonlights writing for
The Drive
, and he’s brought along a lot of context and histo... | 21 | 8 | [
{
"comment_id": "6455690",
"author": "Redhatter (VK4MSL)",
"timestamp": "2022-04-12T05:56:24",
"content": "Somehow, I don’t think Queensland Transport, NSW’s RTA… or the equivalents in any other Australian state would let you register that contraption for road use.",
"parent_id": null,
"dept... | 1,760,372,729.216419 | ||
https://hackaday.com/2022/04/11/trenton-computer-festival-makes-youtube-debut/ | Trenton Computer Festival Makes YouTube Debut | Tom Nardi | [
"cons",
"News"
] | [
"Covid-19",
"TCF",
"Trenton Computer Festival",
"youtube"
] | While it doesn’t have the recognition of DEF CON or even HOPE, the Trenton Computer Festival (TCF) holds the record for the longest continually running computer convention, dating all the way back to 1976. TCF has offered vendor spaces, a swap meet, workshops, and keynote talks for almost as long as the personal comput... | 9 | 6 | [
{
"comment_id": "6455673",
"author": "Feinfinger",
"timestamp": "2022-04-12T02:07:17",
"content": "Please put a trigger warning below the title if pictures of B.G. are included.o;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6455674",
"author": "Ken",
... | 1,760,372,729.374925 | ||
https://hackaday.com/2022/04/11/glow-in-the-dark-computer-memory-illuminates-the-fundamentals/ | Glow In The Dark Computer Memory Illuminates The Fundamentals | Chris Wilkinson | [
"computer hacks",
"hardware"
] | [
"6502",
"memory",
"phototransistor",
"ram",
"volatile"
] | Computer memory has taken on many forms over the years, from mercury-based delay-line tubes to handwoven magnetic core. These days, volatile storage using semiconductors has become ubiquitous with computing, but what if there was a better way? [Michael Kohn] has been working on a new standard for computer memory that
u... | 22 | 7 | [
{
"comment_id": "6455654",
"author": "Stephen",
"timestamp": "2022-04-11T23:11:14",
"content": "Not as cool as this.Sadly, some of the links are broken.https://hackaday.com/2014/08/07/dots-and-dashes-on-a-roll/",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "... | 1,760,372,729.270882 | ||
https://hackaday.com/2022/04/11/blood-pressure-cuff-hacked-into-water-level-sensor/ | Blood Pressure Cuff Hacked Into Water Level Sensor | Al Williams | [
"hardware"
] | [
"fluid level",
"level sensor",
"pressure sensor"
] | We often write a post and then learn something new and cool from the comments. The same thing happened when [Andreas] posted a video about monitoring fluid levels. Commenters told him that the best fluid level sensor was a
hacked blood pressure monitor
. He didn’t know that, and we didn’t either, until we watched his v... | 7 | 2 | [
{
"comment_id": "6455670",
"author": "Michael Black",
"timestamp": "2022-04-12T01:47:48",
"content": "But if I scavenge from my blood pressure meter, how will I know when my pressure is low?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6455672",
"a... | 1,760,372,729.038105 | ||
https://hackaday.com/2022/04/14/3d-printing-pills-all-at-once/ | 3D Printing Pills All At Once | Al Williams | [
"Medical Hacks",
"News"
] | [
"3d printing",
"medicine",
"personalized medicine",
"pharmaceutical"
] | To the uninitiated, it might seem like a gimmick to 3D print pharmaceuticals. After all, you take some kind of medicine, pour it in a mold, and you have a pill, right? But researchers and even some commercial companies are 3D printing drugs with unusual chemical or physical properties. For example, pills with braille i... | 7 | 3 | [
{
"comment_id": "6457058",
"author": "William Gallant",
"timestamp": "2022-04-14T15:50:56",
"content": "What about other people hacking into this tech and producing say Fentanyl or are they already? Printing all at once and in Braille are excellent.",
"parent_id": null,
"depth": 1,
"repl... | 1,760,372,729.521597 | ||
https://hackaday.com/2022/04/14/less-is-more-or-how-to-replace-a-25000-bomb-sight-for-20-cents/ | Less Is More — Or How To Replace A $25,000 Bomb Sight For 20 Cents | Al Williams | [
"Featured",
"History",
"Rants",
"Slider"
] | [
"complexity",
"norden",
"wwii"
] | Depending on who you ask, the Norden bombsight was either the highest of high tech during World War II, or an overhyped failure that provided jobs and money for government contractors. Either way, it was super top secret in its day. It was also expensive. They cost about $25,000 each and the whole program came in at we... | 64 | 21 | [
{
"comment_id": "6457023",
"author": "jenningsthecat",
"timestamp": "2022-04-14T14:16:50",
"content": "“I’d rather have a handful of dedicated CPUs doing very specific tasks on bare metal than some big processor with an RTOS handling so many life-critical tasks.”Amen brother! Systems built according... | 1,760,372,729.478477 | ||
https://hackaday.com/2022/04/14/great-beginnings-the-antikythera-mechanism-gets-a-day-zero/ | Great Beginnings: The Antikythera Mechanism Gets A “Day Zero” | Dan Maloney | [
"History",
"News"
] | [
"Anitkythera",
"annular eclipse",
"antiquity",
"calendar",
"eclipse",
"epicycle",
"lunar",
"saros",
"solar"
] | When an unknown genius sat down more than 2,000 years ago to design and build an astronomical instrument, chances are good that he or she didn’t think that entire academic institutions devoted to solving its mysteries would one day be established. But such is the enduring nature of the Antikythera mechanism, the gift f... | 29 | 11 | [
{
"comment_id": "6456969",
"author": "M",
"timestamp": "2022-04-14T12:03:41",
"content": "In all likelihood identical copies of the Antikythera mechanism were expensive but relatively commonplace. It demonstrates refined construction techniques and you don’t get those on a one-off prototype. You get... | 1,760,372,729.636295 | ||
https://hackaday.com/2022/04/14/versatile-reflow-oven-controller-uses-esp32-s2/ | Versatile Reflow Oven Controller Uses ESP32-S2 | Al Williams | [
"Microcontrollers",
"Tool Hacks"
] | [
"ESP32",
"ESP32-S2",
"oven",
"reflow"
] | [Maker.Moekoe] wanted a single controller board that was usable with different reflow ovens or hotplates. The result is a
versatile board based on the ESP32-S2
. You can see a video of the board’s assembly in the video below.
The board sports several inputs and outputs including:
2x MAX6675 thermocouple sensor input
2x... | 12 | 5 | [
{
"comment_id": "6456942",
"author": "Rumble_in_the_Jungle",
"timestamp": "2022-04-14T10:07:54",
"content": "WARNING: sound mute highly advised!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6456972",
"author": "Pete",
"timestamp": "2022-04-... | 1,760,372,729.569127 | ||
https://hackaday.com/2022/04/13/pisquare-lets-you-run-multiple-hats-on-a-raspberry-pi/ | PiSquare Lets You Run Multiple HATs On A Raspberry Pi | Lewin Day | [
"Raspberry Pi"
] | [
"hat",
"hat interface",
"hat system",
"raspberry pi",
"raspberry pi hat"
] | The Raspberry Pi’s venerable 40-pin header and associated HAT ecosystem for upgrades has been a boon for the platform. It’s easy to stack extra hardware on to a Pi, even multiple times in some cases. However, if you want to run multiple HATs, and wirelessly at that, the PiSquare
might just be the thing for you.
The PiS... | 8 | 6 | [
{
"comment_id": "6456868",
"author": "The Eternal President Kim Il Sung",
"timestamp": "2022-04-14T06:05:22",
"content": "Neat. Now if only everywhere weren’t sold out of Raspberry Pi’s and Arduinos…",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6456884",
... | 1,760,372,729.709839 | ||
https://hackaday.com/2022/04/13/reducing-warping-in-metal-3d-prints/ | Reducing Warping In Metal 3D Prints | Al Williams | [
"3d Printer hacks"
] | [
"3D metal printer",
"3d printing"
] | We are used to dealing with warping when printing with thermoplastics like ABS, but metal printers suffer from this problem, too. The University of Michigan has a new technology,
SmartScan
, that promises to reduce this problem. You can see a video about the technique, below.
The idea is to develop a thermal model of t... | 9 | 3 | [
{
"comment_id": "6456921",
"author": "Jc",
"timestamp": "2022-04-14T09:01:30",
"content": "They just need to slow down your print speed and apply hair spray and elmers glue stick with painters tape on an acetone wiped and properly trammed bed, right?So many wasted prints to get my machine in toleran... | 1,760,372,730.080798 | ||
https://hackaday.com/2022/04/13/does-your-programmer-know-how-fast-you-were-going/ | Does Your Programmer Know How Fast You Were Going? | Al Williams | [
"News",
"Transportation Hacks"
] | [
"autonomous vehicle",
"police",
"self-driving car"
] | News reports were everywhere that an autonomous taxi operated by a company called Cruise was driving through San Francisco with no headlights. The
local constabulary tried to stop the vehicle
and were a bit thrown that there was no driver. Then the car moved beyond an intersection and pulled over, further bemusing the ... | 83 | 18 | [
{
"comment_id": "6456769",
"author": "DionB",
"timestamp": "2022-04-13T23:30:20",
"content": "feature or bug? :p",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6456937",
"author": "Fungus",
"timestamp": "2022-04-14T09:53:16",
"content... | 1,760,372,730.196227 | ||
https://hackaday.com/2022/04/10/coin-acceptors-are-higher-tech-than-you-think/ | Coin Acceptors Are Higher-Tech Than You Think | Al Williams | [
"Arduino Hacks",
"Teardown"
] | [
"coin acceptor",
"coin selector",
"coin-op",
"vending machine"
] | Coin-operated machines have a longer history than you might think. Ancient temples used them to dispense, for example, holy water to the faithful in return for their coins. Old payphones rang a bell when you inserted a coin so the operator knew you paid. Old pinball machines had a wire to catch things with holes in the... | 16 | 10 | [
{
"comment_id": "6455457",
"author": "RH",
"timestamp": "2022-04-11T07:27:06",
"content": "This is my first time seeing this guy’s videos, but I have to give credit where credit is due: He’s great.While I share some oldbie-esque umbrage that so much information is put into videos rather than posts/t... | 1,760,372,730.039745 | ||
https://hackaday.com/2022/04/10/boards-for-playful-exploration-of-digital-protocols/ | Boards For Playful Exploration Of Digital Protocols | Arya Voronova | [
"Misc Hacks"
] | [
"education",
"educational",
"i2c",
"i2c interface",
"protocol design",
"RCA",
"serial protocol",
"spi",
"STEAM education",
"uart"
] | Teaching people efficiently isn’t limited to transmitting material from one head to another — it’s also about conveying the principles that got us there. [Mara Bos]
shows us a toolkit
(Twitter,
nitter link
) that you can arm your students with, creating a small playground where, given a set of constraints, they can inv... | 1 | 1 | [
{
"comment_id": "6455488",
"author": "Anonymous",
"timestamp": "2022-04-11T11:29:13",
"content": "I like the simplicity of the design, but I really think there needs to be some sort of ESD protection on the input. Please correct me if I’m wrong.",
"parent_id": null,
"depth": 1,
"replies"... | 1,760,372,729.91392 | ||
https://hackaday.com/2022/04/10/hackaday-links-april-10-2022/ | Hackaday Links: April 10, 2022 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links",
"Slider"
] | [
"audio clip",
"boring people",
"delivery bot",
"electron beam",
"hackaday links",
"Ingenuity",
"Jezero",
"mars",
"metal 3d printing",
"Perseverance",
"starship",
"what's that sound"
] | A funny thing happened on the way to the delta. The one on Jezero crater on Mars, that is, as the
Perseverance
rover may have
captured a glimpse of the parachute
that helped deliver it to the Red Planet a little over a year ago. Getting the rover safely onto the Martian surface was
an incredibly complex undertaking
, m... | 19 | 12 | [
{
"comment_id": "6455400",
"author": "Ostracus",
"timestamp": "2022-04-10T23:46:46",
"content": "It’s a robot revolution. Run for your lives.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6455412",
"author": "Feinfinger (with diabolic laughter)",
... | 1,760,372,729.982095 | ||
https://hackaday.com/2022/04/10/robotic-boat-rides-high-on-pvc-pipe-pontoons/ | Robotic Boat Rides High On PVC Pipe Pontoons | Tom Nardi | [
"Robots Hacks"
] | [
"autonomous boat",
"depth mapping",
"jet drive",
"pontoon"
] | If you want to build your own rover, there’s plenty of cheap RC trucks out there that will provide a serviceable chassis to work with. Looking to go airborne with a custom drone? Thanks to the immense popularity of first-person view (FPV) flying, you’ll find a nearly infinite variety of affordable fixed wing and quadco... | 11 | 9 | [
{
"comment_id": "6455376",
"author": "NAM",
"timestamp": "2022-04-10T20:52:28",
"content": "looks like a bomb",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6455533",
"author": "DainBramage",
"timestamp": "2022-04-11T14:19:31",
"conte... | 1,760,372,730.638121 | ||
https://hackaday.com/2022/04/10/a-super-simple-diy-ozone-generator/ | A Super Simple DIY Ozone Generator | Dave Rowntree | [
"Science"
] | [
"corona discharge",
"high voltage",
"ozone"
] | [Advanced Tinkering] needed a source of fresh ozone for some future chemistry related projects, and since buying an off-the-shelf unit would be, well, just plain boring, it was
obvious what to do
(Video, embedded below).
Wire mesh discharge surfaces separated with a glass tube
The concept of the corona-discharge ozone ... | 38 | 9 | [
{
"comment_id": "6455317",
"author": "Ron",
"timestamp": "2022-04-10T17:08:36",
"content": "Nothing like poisoning the air that you breath.https://www.lung.org/clean-air/outdoors/what-makes-air-unhealthy/ozone",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6... | 1,760,372,730.476167 | ||
https://hackaday.com/2022/04/10/this-3-5mm-cable-distorts-signals-hides-audio-filtering-circuit/ | This 3.5mm Cable Distorts Signals, Hides Audio-Filtering Circuit | Arya Voronova | [
"Misc Hacks"
] | [
"3.5mm",
"audio cable",
"audio jack",
"bose"
] | [Avian]’s dad got a new ham radio transceiver with a 3.5 mm jack, and his pile-of-cables got him
a headphone cable from Bose headphones
. He built a DB9 to 3.5 mm adapter with that one – and it failed to let data through, outputting distorted garbage of a waveform instead. With a function generator and an oscilloscope,... | 57 | 15 | [
{
"comment_id": "6455270",
"author": "Steve",
"timestamp": "2022-04-10T14:04:34",
"content": "This is pretty interesting, I’m actually thinking back to the times my cat chewed through my headphone wires, I replaced them but they never quite sounded the same after..",
"parent_id": null,
"dept... | 1,760,372,730.359231 | ||
https://hackaday.com/2022/04/10/a-turbocharged-robot-mop-to-save-your-date/ | A Turbocharged Robot Mop To Save Your Date | Robin Kearey | [
"home hacks",
"Robots Hacks"
] | [
"cleaning robot",
"obstacle avoidance",
"robot mop"
] | Cleaning robots are great and all, but they don’t really excel when it comes to speed. If your room looks like a pigsty and your Tinder date is arriving in twenty minutes, you’ll need more than a Roomba to make a good impression. [Luis Marx] ran into this exact problem and decided to solve it by building
the world’s fa... | 4 | 4 | [
{
"comment_id": "6455261",
"author": "Keith Woodward",
"timestamp": "2022-04-10T12:58:59",
"content": "Cool robot! So funny the way he composited himself amongst the code at two thirds through!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6455305",
"auth... | 1,760,372,730.398273 | ||
https://hackaday.com/2022/04/11/quick-hacks-countersinking-screw-heads-with-3d-laser-engraving/ | Quick Hacks: Countersinking Screw Heads With 3D Laser Engraving | Dave Rowntree | [
"Laser Hacks",
"Tool Hacks"
] | [
"3d laser engraving",
"countersink",
"inkscape"
] | Here’s a fun
quick hack from [Timo Birnschein] about using the 3D laser engraving
(or ‘stamp’ engraving) mode of certain laser cutter toolchains to create a handy countersink shape in a laser-cut and engraved workpiece. Since [Timo] uses a small laser cutter to cut out and mark project boards for their electronics buil... | 19 | 6 | [
{
"comment_id": "6455584",
"author": "McNugget",
"timestamp": "2022-04-11T18:11:53",
"content": "That’s interesting but I’ll just keep doing it ole skool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6455587",
"author": "lj",
"timestamp": "2022-04-11T... | 1,760,372,730.528026 | ||
https://hackaday.com/2022/04/11/review-vizy-linux-powered-ai-camera/ | Review: Vizy Linux-Powered AI Camera | Donald Papp | [
"Artificial Intelligence",
"digital cameras hacks",
"Hackaday Columns",
"Raspberry Pi",
"Slider"
] | [
"ai",
"camera",
"IR filter",
"machine learning",
"machine vision",
"raspberry pi",
"Raspberry Pi 4",
"tensorflow"
] | Vizy
is a Linux-based “AI camera” based on the Raspberry Pi 4 that uses machine learning and machine vision to pull off some neat tricks, and has a design centered around hackability. I found it ridiculously simple to get up and running, and it was just as easy to make changes of my own, and start getting ideas.
Out of... | 14 | 9 | [
{
"comment_id": "6455588",
"author": "Jon",
"timestamp": "2022-04-11T18:23:57",
"content": "This inspires me to pick up where I left off with my CV project.It seems like computer vision + AI might be at a place where it could watch my shop with me puttering around in it, and send an alert if I am us... | 1,760,372,730.587244 |
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