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https://hackaday.com/2022/01/17/electromyography-hack-chat/ | Electromyography Hack Chat | Dan Maloney | [
"Hackaday Columns"
] | [
"action potential",
"electromyography",
"emg",
"Hack Chat",
"muscle",
"nerve",
"neural",
"phsyiology"
] | Join us on Wednesday, January 19 at noon Pacific as we kick off the 2022 Hack Chat season with the
Electromyography Hack Chat
with
hut
!
It’s one of the simplest acts most people can perform, but just wiggling your finger is a vastly complex process under the hood. Once you consciously decide to move your digit, a casc... | 0 | 0 | [] | 1,760,372,819.885697 | ||
https://hackaday.com/2022/01/17/old-firewall-reborn-as-retro-pc/ | Old Firewall Reborn As Retro PC | Chris Lott | [
"computer hacks",
"hardware"
] | [
"embedded",
"firewall",
"motherboard",
"retrogaming",
"router"
] | We like projects where old gear is given a new life. [Splashdust] has a twenty-year old business firewall that’s build like a tank. He cracks it open and finds a complete x86 embedded motherboard inside, and sets off to restore it and turn it into a retro gaming computer (see the
video from his
Odd & Obsolete
YouTube c... | 16 | 5 | [
{
"comment_id": "6415040",
"author": "VarneyJLV",
"timestamp": "2022-01-17T15:17:41",
"content": "Years ago I found one of these old business firewall’s at a thrift store for $5.00. The CPU was a Pentium 3 which wasn’t that old at the time. I plugged a PCI video card into it that I found at a flea m... | 1,760,372,819.939496 | ||
https://hackaday.com/2022/01/17/3d-printed-magnetic-switches-promise-truly-custom-keyboards/ | 3D Printed Magnetic Switches Promise Truly Custom Keyboards | Jenny List | [
"Peripherals Hacks"
] | [
"3d printed keyboard",
"keyboard",
"magnetic keyboard",
"openscad",
"parametric design"
] | While most people are happy to type away at whatever keyboard their machine came with, for the keyboard enthusiast, there’s no stone to be left unturned in the quest for the perfect key switch mechanism. Enter [Riskable], with
an innovative design for a 3D printed mechanism
that delivers near-infinite adjustment withou... | 57 | 14 | [
{
"comment_id": "6415007",
"author": "abjq",
"timestamp": "2022-01-17T12:44:59",
"content": "Looking at the Hall switches: OH49E Series …The output voltage is set by the supply voltage and varies in proportion to the strength of the magnetic field.So maybe you could do away with the traditional caps... | 1,760,372,819.84738 | ||
https://hackaday.com/2022/01/17/hack-the-web-without-a-browser/ | Hack The Web Without A Browser | Al Williams | [
"Software Development",
"Software Hacks"
] | [
"scraping",
"screen scraping",
"web scraping"
] | It is a classic problem. You want data for use in your program but it is on a webpage. Some websites have an API, of course, but usually, you are on your own. You can load the whole page via HTTP and parse it. Or you can use some tools to “scrape” the site.
One interesting way to do this is woob
— web outside of browse... | 20 | 8 | [
{
"comment_id": "6414968",
"author": "YGDES",
"timestamp": "2022-01-17T09:18:22",
"content": "Well well well… I once made a HaD.io scraper but it was quickly broken by “updates” to the pages.Considering I have > 100 projects, I would love to have a snapshot of everything.",
"parent_id": null,
... | 1,760,372,820.190283 | ||
https://hackaday.com/2022/01/16/a-dodgy-dial-gets-a-teardown-and-some-oil/ | A Dodgy Dial Gets A Teardown And Some Oil | Jenny List | [
"classic hacks",
"Phone Hacks"
] | [
"GPO",
"pulse dial",
"telephone dial"
] | The pulse-dial telephone and its associated mechanical exchange represents the pinnacle of late-19th and early-20th century electromechanical technology, but its vestiges have disappeared from view with astonishing rapidity. [Matthew Harrold] is a telecoms enthusiast who’s been kind enough to share with us
the teardown... | 8 | 5 | [
{
"comment_id": "6415015",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2022-01-17T13:20:42",
"content": "Timely!My old phone’s dial became “dodgy” being stored in the garage (humidity?),",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "64151... | 1,760,372,820.034385 | ||
https://hackaday.com/2022/01/16/open-source-replacement-for-ezcad/ | Open Source Replacement For EzCAD | Chris Lott | [
"Laser Hacks"
] | [
"balor",
"EZCAD",
"fiber laser",
"laser engraving"
] | [Bryce] obtained a fiber laser engraver to use for rapid PCB prototyping last Fall. But he was soon frustrated by the limitations of the standard EzCAD software that typically comes with these and similar devices — it is proprietary, doesn’t have features aimed at PCB manufacturing, only runs on Windows, and is buggy. ... | 24 | 12 | [
{
"comment_id": "6414953",
"author": "Drone",
"timestamp": "2022-01-17T07:10:02",
"content": "Master Oscillator Power Amplifier (MOPA) [1] LASER-Fiber Engravers are expensive. Here’s a 30W desktop unenclosed MOPA-Fiber model for $3.8k USD, and that’s cheap.[2] [Bryce] uses a 20W version from LIT LAS... | 1,760,372,819.995285 | ||
https://hackaday.com/2022/01/16/hackaday-links-january-16-2022/ | Hackaday Links: January 16, 2022 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links",
"Slider"
] | [
"astrophotography",
"bmw",
"e-ink",
"electronic ink",
"electrostatic discharge",
"esd",
"hackaday links",
"Heat pump",
"james webb space telescope",
"jwst",
"orion",
"polar vortex",
"Social Media",
"street view",
"tesla"
] | As winter well and truly grips the northern hemisphere, it’s time once again to dunk on Tesla for
leaving some owners out in the cold — literally
. It seems that some Model 3 and Model Y owners are finding their ride’s heat pump isn’t exactly up to the task of, you know, pumping heat. That this seems to be happening mo... | 21 | 10 | [
{
"comment_id": "6414924",
"author": "Eric Chapin",
"timestamp": "2022-01-17T00:50:13",
"content": "Color changing car could be the police’s bane. They could radio ahead of criminals fleeing in a white car, the police ahead only sees black car and completely misses the criminal.",
"parent_id":... | 1,760,372,820.090967 | ||
https://hackaday.com/2022/01/16/aeroponic-cell-grows-garlic-forwards-cellsol-packets/ | Aeroponic Cell Grows Garlic, Forwards CellSol Packets | Arya Voronova | [
"green hacks",
"Radio Hacks"
] | [
"aeroponic",
"Aeroponics",
"automated plant care",
"automatic gardening",
"gardening",
"growing",
"horticulture",
"plants"
] | Certain pictures draw attention like no other, and that’s what happened when we stumbled upon
a Twitter post about “resuscitating supermarket garlic”
by [Robots Everywhere]. The more we looked at this photo, the more questions popped up, and we couldn’t resist contacting the author on Twitter – here’s what we’ve learne... | 16 | 5 | [
{
"comment_id": "6414909",
"author": "Gael",
"timestamp": "2022-01-16T22:00:35",
"content": "This is pretty cool",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414918",
"author": "spiritplumber",
"timestamp": "2022-01-16T23:38:17",
"... | 1,760,372,820.139933 | ||
https://hackaday.com/2022/01/16/thirty-seconds-at-100-megakelvins/ | Thirty Seconds At 100 Megakelvins | Chris Lott | [
"News",
"Science"
] | [
"ITER",
"kstar",
"nuclear fusion"
] | Back in Dec 2020 we wrote about the Korea Superconducting Tokamak Advanced Research (KSTAR) magnetic fusion reactor’s
record-breaking feat of heating hydrogen plasma up to 100 megakelvins for 20 seconds
. Last month it
broke its own record, extending that to 30 seconds
. The target of the program is 300 seconds by 2026... | 28 | 8 | [
{
"comment_id": "6414871",
"author": "William J Steele",
"timestamp": "2022-01-16T18:57:47",
"content": "Ah, the age old question.Q) How hot is the sun?A) A million degrees!Q) Is that K or C?A) Doesn’t matter!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6... | 1,760,372,819.746618 | ||
https://hackaday.com/2022/01/16/printable-portable-mask-gives-you-the-numbers-on-your-workout/ | Printable Portable Mask Gives You The Numbers On Your Workout | Dan Maloney | [
"Medical Hacks"
] | [
"differential pressure",
"ESP32",
"exercise",
"mask",
"O2",
"oxygen",
"physiology",
"respirator",
"sensor",
"sports medicine",
"Venturi",
"VO2 max"
] | We’re currently in the midst of New Year’s Resolutions season, which means an abundance of spanking new treadmills and exercise bikes. And one thing becomes quickly obvious while using those machines: the instruments on them are, at best, only approximately useful for measuring things like your pulse rate, and in the c... | 7 | 4 | [
{
"comment_id": "6414856",
"author": "Evan Rowley",
"timestamp": "2022-01-16T15:53:18",
"content": "Wow! I just bought a pair of these exact 3M masks for some dusty jobs. Glad to hear they have uses beyond just home improvement.",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,372,819.684993 | ||
https://hackaday.com/2022/01/16/giant-3d-prints-piece-by-piece/ | Giant 3D Prints Piece-by-Piece | Al Williams | [
"3d Printer hacks"
] | [
"3d printing",
"large scale 3d printing"
] | While FDM printers have gotten bigger lately, there’s almost always going to be a part that is bigger than your bed. The answer? Break your design into parts and assemble them after printing. However, the exact method to do this is a bit of a personal choice. A mechanical engineering student wrote:
After researching th... | 18 | 8 | [
{
"comment_id": "6414857",
"author": "MrSVCD",
"timestamp": "2022-01-16T15:59:20",
"content": "Nice!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6414860",
"author": "Peter",
"timestamp": "2022-01-16T16:11:49",
"content": "Luban was featured on H... | 1,760,372,820.243049 | ||
https://hackaday.com/2022/01/16/coin-sorter-is-elegant-and-beautiful/ | Coin Sorter Is Elegant And Beautiful | Lewin Day | [
"Misc Hacks"
] | [
"coin",
"coin counter",
"coin sorter",
"coins"
] | Counting change is a great way to teach children about mathematics and money, but it grows tiresome for those of us that have passed the first grade. Thus, a machine should the job,
as [Daniele Tartaglia] demonstrates.
A vibrating motor is used to shake a hopper full of coins, letting them fall through a feeder slot in... | 32 | 13 | [
{
"comment_id": "6414816",
"author": "Christoph",
"timestamp": "2022-01-16T10:09:28",
"content": "The roller coaster mid-part is visually interesting (which is likely the point of this project) but it doesn’t add to the functionality. Some minor improvements : use a hinged door so that no screw dri... | 1,760,372,820.96712 | ||
https://hackaday.com/2022/01/15/serial-studio-one-year-on/ | Serial Studio One Year On | Chris Lott | [
"Software Hacks"
] | [
"dashboard",
"data visualizer",
"json",
"serial plotter",
"serial port"
] | Last year we
wrote about [Alex Spataru]’s Serial Studio project
, which started life as serial port data visualizer, like a souped-up version of the Arduino serial plotter. [Alex] has been actively improving the project ever since, adding a variety of new features, including
JSON editor for data formats
TCP, UDP, and M... | 14 | 7 | [
{
"comment_id": "6414807",
"author": "NotThatDan",
"timestamp": "2022-01-16T08:26:48",
"content": "This is exactly what I have been looking for the last couple of days.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414837",
"author": "Alysson+Rowan... | 1,760,372,820.90019 | ||
https://hackaday.com/2022/01/15/giant-wheels-make-for-exciting-powered-rollerskates/ | Giant Wheels Make For Exciting Powered Rollerskates | Lewin Day | [
"Transportation Hacks"
] | [
"chainsaw",
"roller skates",
"wheels"
] | Roller skates are fun and all, but they’re pretty well limited to rolling on relatively smooth surfaces. [Fireball Tool] wanted something a little more rugged,
so set about a build of his own.
The challenge of the design was to build these skates using as many wheelchair parts as possible, including the wheels. Roughly... | 14 | 12 | [
{
"comment_id": "6414782",
"author": "Tom Hargrave",
"timestamp": "2022-01-16T03:11:16",
"content": "That’s gonna hurt!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6414786",
"author": "BobbyMac99",
"timestamp": "2022-01-16T04:35:24",
"content": ... | 1,760,372,820.634799 | ||
https://hackaday.com/2022/01/15/glitch-your-way-to-reverse-engineering-glory-with-the-picoemp/ | Glitch Your Way To Reverse-Engineering Glory With The PicoEMP | Dan Maloney | [
"Security Hacks",
"Tool Hacks"
] | [
"electromagnetic fault injection",
"EMFI",
"emp",
"glitching",
"high voltage",
"hv",
"Raspberry Pi Pico",
"Side channel"
] | Most of our projects are, to some extent, an exercise in glitch-reduction. Whether they’re self-inflicted software or hardware mistakes, or even if the glitches in question come from sources beyond our control, the whole point of the thing is to get it running smoothly and predictably.
That’s not always the case, thoug... | 9 | 4 | [
{
"comment_id": "6414766",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2022-01-16T01:10:34",
"content": "Slightly(?) Off-topic;What is that one handed, dual probe holder he uses starting around 6:00 in the video?As I don’t have a 3D printer, does anyone have a source for one?",
... | 1,760,372,821.007145 | ||
https://hackaday.com/2022/01/15/recycling-soda-bottles-into-filament-to-print-smaller-soda-bottles/ | Recycling Soda Bottles Into Filament To Print Smaller Soda Bottles | Lewin Day | [
"3d Printer hacks"
] | [
"3d print",
"3d printer",
"filament",
"pet",
"recycling"
] | Thermoplastics are great, because you can melt them down and reform them into whatever you like. This is ably demonstrated by [The Q] by recycling old soda bottles into usable 3D printer filament.
Cute, huh? Why aren’t Coca-Cola making these? Tiny fake grocery items already proved
hugely popular in Australia.
Soda bott... | 32 | 11 | [
{
"comment_id": "6414737",
"author": "BadAngel",
"timestamp": "2022-01-15T22:42:10",
"content": "Simple design … I must do it for me (I already have all the required parts).To solve the “short filament issue”, I would try to join the bottle strips before converting them to filament. If joining the s... | 1,760,372,820.703138 | ||
https://hackaday.com/2022/01/15/the-eerie-sounds-of-ioalieia-an-esp32-valve-analog-hybrid-circuit-sculpture/ | The Eerie Sounds Of Ioalieia: An ESP32/Valve/Analog Hybrid Circuit Sculpture | Dave Rowntree | [
"Art",
"Musical Hacks"
] | [
"analog",
"AS3320",
"Circuit Sculpture",
"digital",
"Digital echo",
"ESP32",
"MCP4251",
"PT2399",
"vacuum tube"
] | We’ve not had a circuit sculpture piece for a while, so here’s
“ioalieia” a lovely hybrid digital-analog sound sculpture
by [Eirik Brandal] to dig into.
Tidy straight lines. Nice job!
The host of the show is the ESP32 module, which generates audio frequency square waves, which are fed into a
MCP4251
digital potentiomet... | 18 | 9 | [
{
"comment_id": "6414723",
"author": "Redhatter (VK4MSL)",
"timestamp": "2022-01-15T20:29:35",
"content": "> The suitably distorted filtered square waves then pass into a Princeton Tech Corp PT2399 echo processor cjip…What is a “cjip”, exactly?",
"parent_id": null,
"depth": 1,
"replies":... | 1,760,372,820.845941 | ||
https://hackaday.com/2022/01/15/hacking-is-hacking/ | Hacking Is Hacking | Elliot Williams | [
"classic hacks",
"Hackaday Columns",
"Rants"
] | [
"newsletter",
"reverse engineering",
"travis goodspeed"
] | Tom Nardi and I had a good laugh this week
on the Podcast
when he compared
the ECU hacks
that enabled turning a VW with steering assist into a self-driver to a hack last week that
modified a water cooler
to fill a particular cup. But it’s actually no joke — some of the very same techniques are used in both efforts, alt... | 5 | 4 | [
{
"comment_id": "6414666",
"author": "Hash Salehi",
"timestamp": "2022-01-15T15:25:53",
"content": "Travis’s talk is great to understand the separation of the art and skill of hacking from the potential effects when applied to the devices that run our world.He’s also an entertaining character so I r... | 1,760,372,821.086242 | ||
https://hackaday.com/2022/01/15/doing-the-right-thing-the-wrong-way-dumping-stm8-firmware-with-555-timers/ | Doing The Right Thing The Wrong Way: Dumping STM8 Firmware With 555 Timers | Ryan Flowers | [
"classic hacks"
] | [
"555 timer contest",
"firmware dump",
"glitching",
"stm8"
] | When [Jarrett] decided to enter the 555 Contest that’s just wrapped up, he leaned up on an idea that’s been rattling around in his noggin for a few years:
Using 555 timers to trigger a firmware dump on a microcontroller
. It’s definitely the wrong tool for the job, but [Jarrett] got it working and documented it nicely ... | 4 | 3 | [
{
"comment_id": "6414671",
"author": "darkspr1te",
"timestamp": "2022-01-15T16:02:00",
"content": "The Nerd version of “Hold my beer”",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414682",
"author": "The Commenter Formerly Known As Ren",
"t... | 1,760,372,821.045269 | ||
https://hackaday.com/2022/01/15/improve-your-front-panels/ | Improve Your Front Panels | Al Williams | [
"3d Printer hacks"
] | [
"front panel",
"laminator"
] | For many of us, the bane of electronic projects is making a professional-looking enclosure. Sure, 3D printing has made it easier to make the actual enclosure, but there’s still the problem of labeling it. [Richard Langner] has the answer with something he calls
easy front panels
. You can read about it or watch the tut... | 58 | 18 | [
{
"comment_id": "6414622",
"author": "IIVQ",
"timestamp": "2022-01-15T09:37:55",
"content": "Excellent.If you want to make holes in laminations (e.g. if you want to hang it outside with a thumbtack or so), first make a larger hole in the paper, so the laminate also seals the inside of the hole.",
... | 1,760,372,821.175211 | ||
https://hackaday.com/2022/01/14/travel-guitar-hacked-with-digital-fx-setup/ | Travel Guitar Hacked With Digital FX Setup | Lewin Day | [
"Musical Hacks"
] | [
"guitar",
"music",
"musical hacks"
] | [Courcirc8] was a big fan of the ALP AD-80, with the travel guitar being a surprisingly competent instrument despite its folding form-factor. However, the onboard headphone amp left something to be desired,
so it was time to get hacking.
To achieve better audio output, [courcirc8] decided to purchase an iRig HD 2 guita... | 8 | 4 | [
{
"comment_id": "6414700",
"author": "Nitpicker Smartyass",
"timestamp": "2022-01-15T17:29:44",
"content": "I love the idea.However, this kind of ruins it:> all one has to do is hook up a smartphone to gain access to a broad selection of software effects.… I would prefer making music to handling a “... | 1,760,372,821.216392 | ||
https://hackaday.com/2022/01/14/smart-sutures-become-wise/ | Smart Sutures Become WiSe | Chris Lott | [
"Medical Hacks",
"News"
] | [
"health care",
"infection",
"surgery",
"suture",
"wounds"
] | A team at the Wireless Bioelectronics Lab at the National University of Singapore led by [Dr John Ho] announced the results of their new
Wireless Sensing (WiSe) smart sutures program
last month. Their system consists of a specially prepared patch of polymer gel (the sensor) which is sewn into the wound using a silk sut... | 12 | 3 | [
{
"comment_id": "6414588",
"author": "Gravis",
"timestamp": "2022-01-15T04:19:07",
"content": "As much as I love electronics, this seems more like a chemistry type problem. The “sutures with beet juice concentrate that change from a bright red hue to a purple color when the pH level indicates an in... | 1,760,372,821.266469 | ||
https://hackaday.com/2022/01/14/making-your-own-mclaren-f1-lm/ | Making Your Own Mclaren F1 LM | Matthew Carlson | [
"car hacks"
] | [
"diy car",
"fabrication",
"McLaren"
] | It isn’t often we get a project that has an eighteen-year-long timeline, as staying focused on one project for that long is a significant investment of someone’s lifetime. But when you’re
making your own carbon copy Mclaren, you need to be prepared for it to take a while
. Unfortunately, there are only 6 of them in the... | 14 | 8 | [
{
"comment_id": "6414578",
"author": "wjp",
"timestamp": "2022-01-15T02:10:55",
"content": "It would have taken Tavarish longer.Wrench every day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6414579",
"author": "Tom Hargrave",
"timestamp": "2022-01-1... | 1,760,372,821.464057 | ||
https://hackaday.com/2022/01/14/improving-an-already-phenomenal-star-trek-prop/ | Improving An Already PhenomenalStar TrekProp | Tom Nardi | [
"handhelds hacks",
"LED Hacks",
"Microcontrollers"
] | [
"prop",
"replica",
"star trek",
"tricorder",
"voyager"
] | When
Star Trek: Voyager
was in the development phase, concept art was created for a new style of tricorder to be used by the crew of the titular starship. But as it often the case with a younger sibling, the show ended up having to largely make do with the hand-me-down props from
Star Trek: The Next Generation
, which ... | 8 | 4 | [
{
"comment_id": "6414553",
"author": "Gravis",
"timestamp": "2022-01-14T22:30:16",
"content": "I’m not surprised. China: where the product is a lie an the specs don’t matter.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414787",
"author": "Ed",
... | 1,760,372,821.417023 | ||
https://hackaday.com/2022/01/14/toilet-paper-warmer-is-a-unique-chinese-luxury/ | Toilet Paper Warmer Is A Unique Chinese Luxury | Lewin Day | [
"home hacks"
] | [
"bathroom",
"china",
"toilet",
"toilet paper"
] | [Handy Geng] lives in Baoding, China, where average winter temperatures can get as low as −7.7 °C (18.1 °F). Rather than simply freezing in the cold when using the bathroom, he decided he could do better. Thus came about his rather unique
toilet paper heating system
.
The build uses a gas burner heating up a wok. Toile... | 32 | 15 | [
{
"comment_id": "6414513",
"author": "Paul",
"timestamp": "2022-01-14T19:48:08",
"content": "When I was a kid, in winter the toilet paper hung with the toilet seat on the wall next to the door, right beside the woodstove. You’d grab both on your way out to the outhouse. (Yes, back then we were civ... | 1,760,372,821.54689 | ||
https://hackaday.com/2022/01/14/3d-printering-getting-started-with-universal-bed-leveling/ | 3D Printering: Getting Started With Universal Bed Leveling | Al Williams | [
"3d Printer hacks",
"Hackaday Columns"
] | [
"3d printing"
] | Last time we talked about how
Marlin has several bed leveling mechanisms
including unified bed leveling or UBL. UBL tries to be all things to all people and has provisions to create dense meshes that model your bed and provides ways for you to adjust and edit those meshes.
We talked about how to get your printer ready ... | 10 | 9 | [
{
"comment_id": "6414507",
"author": "Derpapopulus Rex",
"timestamp": "2022-01-14T19:20:27",
"content": "Thanks for the non-constructive comment. Glad you got your posting karma for the day.Move on to…. what?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "64... | 1,760,372,821.776114 | ||
https://hackaday.com/2022/01/14/hackaday-podcast-151-the-hackiest-vr-glove-plotting-boba-fett-with-shoelaces-ecu-hacking-and-where-does-ammonia-come-from/ | Hackaday Podcast 151: The Hackiest VR Glove, Plotting Boba Fett With Shoelaces, ECU Hacking, And Where Does Ammonia Come From? | Tom Nardi | [
"Hackaday Columns",
"Podcasts"
] | [
"Hackaday Podcast"
] | Hackaday Editor-in-Chief Elliot Williams and Managing Editor Tom Nardi are back again to talk about all the weird and wonderful stories from our corner of the tech world. Canon had to temporarily give up on chipping their ink cartridges due to part shortages, and that’s just too perfect to ignore. There’s also some goo... | 0 | 0 | [] | 1,760,372,821.724754 | ||
https://hackaday.com/2022/01/14/rapid-reload-vacuum-cannon-totally-demolishes-those-veggies/ | Rapid-Reload Vacuum Cannon Totally Demolishes Those Veggies | Dave Rowntree | [
"classic hacks",
"Science"
] | [
"air cannon",
"vacuum"
] | [NightHawkInLight] has been developing his design for a vacuum canon for a while now, so it seems fitting to
drop in check out the progress
. The idea is pretty straightforward, take a long rigid tube, insert a close fitting piston, magnetically attached to a projectile, and stopper the open end with something easily d... | 9 | 4 | [
{
"comment_id": "6414519",
"author": "Comedicles",
"timestamp": "2022-01-14T20:04:49",
"content": "Supersonic inrush? How can that be?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414532",
"author": "Dave Rowntree",
"timestamp": "2022-01-1... | 1,760,372,822.081868 | ||
https://hackaday.com/2022/01/14/this-week-in-security-npm-vandalism-simulating-reboots-and-more/ | This Week In Security: NPM Vandalism, Simulating Reboots, And More | Jonathan Bennett | [
"Hackaday Columns",
"Security Hacks"
] | [
"NPM",
"protestware",
"qnap",
"This Week in Security"
] | We’ve covered quite a few stories about malware sneaking into NPM and other JavaScript repositories. This is a bit different. This time,
a JS programmer vandalized his own packages
. It’s not even malware, perhaps we should call it protestware? The two packages,
colors
and
faker
are both popular, with a combined weekly... | 33 | 13 | [
{
"comment_id": "6414458",
"author": "Dan",
"timestamp": "2022-01-14T15:21:06",
"content": "So… if doing an iOS forced reboot, keep the button down for a minute or so, enough to definitely force a reboot?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "641447... | 1,760,372,822.000108 | ||
https://hackaday.com/2022/01/14/game-boy-becomes-super-game-boy-with-a-pair-of-pis/ | Game Boy Becomes Super Game Boy With A Pair Of Pis | Bryan Cockfield | [
"classic hacks",
"Nintendo Hacks"
] | [
"controller",
"game boy",
"microcontroller",
"nes",
"original",
"pico",
"raspberry pi",
"restoration",
"snes",
"super game boy",
"vga",
"video"
] | For the Nintendo aficionados of the 90s, the Super Game Boy was a must-have cartridge for the Super Nintendo which allowed gamers to play Game Boy games on your TV. Not only did it allow four-color dot-matrix gaming on the big screen, but it let you play those favorite Game Boy titles without spending a fortune on AA b... | 13 | 9 | [
{
"comment_id": "6414410",
"author": "3L_S4N70",
"timestamp": "2022-01-14T13:01:24",
"content": "Interesting build just three comments:– Spending a fortune in AAs?? Come on, GB was able to run for hooooours on 4 AAs, not enough motivation for this build. Playing the games on TV definitely is.– The P... | 1,760,372,821.827622 | ||
https://hackaday.com/2022/01/14/this-diy-microscope-design-is-all-wet/ | This DIY Microscope Design Is All Wet | Al Williams | [
"Science"
] | [
"microscope",
"Robert Murray-Smith",
"water microscope"
] | [Robert Murray-Smith] wanted to recreate how some ancient microscopes worked: with
a drop of water as a lens
. The idea is that the meniscus of a drop of water will work as a lens. This works because of surface tension and by controlling the attraction of the water to the surface, you can actually form convex and conc... | 5 | 3 | [
{
"comment_id": "6414400",
"author": "Prfesser",
"timestamp": "2022-01-14T11:57:43",
"content": "I think a very old “The Amateur Scientist” article (CD available athttps://www.surplusshed.com/pages/item/M2071.html) showed how to make a glass-droplet microscope of the same sort. Center of a glass rod... | 1,760,372,822.036686 | ||
https://hackaday.com/2022/01/13/pico-does-pid/ | Pico Does PID | Al Williams | [
"Microcontrollers"
] | [
"pico",
"pid",
"temperature controller"
] | If you wanted to, say, control a temperature you might think you could just turn on a heater until you reach the desired temperature and then turn the heater off. That sort of works, but it is suboptimal — you’ll tend to overshoot the goal and then as the system cools down, you’ll have to catch up and the result is oft... | 23 | 8 | [
{
"comment_id": "6414330",
"author": "PIDguru",
"timestamp": "2022-01-14T06:47:43",
"content": "If you really want to do it nicely (with resistive loads only) grab a PID controller with a 4-20mA output and a phase controller (like this:https://www.aliexpress.com/item/1005001632554726.html?spm=a2g0o.... | 1,760,372,822.13446 | ||
https://hackaday.com/2022/01/13/microwave-sampler-is-like-time-domain-mixer/ | Microwave Sampler Is Like Time Domain Mixer | Al Williams | [
"Radio Hacks"
] | [
"microwave",
"mixer",
"sampler"
] | [Gregory] is building some microwave gear and wanted to convert a 3.3 GHz signal to a 12 MHz intermediate frequency. You might think of using a mixer, but you’d need a local oscillator of nearly 3.3 GHz which is not only hard to build, but also will be very close to the signal of interest which is not a great idea. Ins... | 17 | 7 | [
{
"comment_id": "6414308",
"author": "BrightBlueJim",
"timestamp": "2022-01-14T04:10:40",
"content": "Nice job teaching the fundamentals of a sampling system. I honestly didn’t know how he was going to get the precisely-matched positive and negative pulses. I knew there would probably be a transfo... | 1,760,372,822.186838 | ||
https://hackaday.com/2022/01/13/soviet-era-auto-dialler-uses-magnetic-rope-core-memory/ | Soviet-Era Auto Dialler Uses Magnetic Rope Core Memory | Dave Rowntree | [
"Teardown"
] | [
"core memory",
"rom",
"rope core memory",
"Soviet electronics",
"telephone"
] | We’ve seen a few interesting magnetic core memories on these fine pages over the years, but we don’t recall seeing too many
user
programmable
magnetic core memory devices. This interesting Russian telephone auto dialer in its day would have been a very useful device, capable of storing and dialing forty user programmab... | 12 | 8 | [
{
"comment_id": "6414261",
"author": "SPD",
"timestamp": "2022-01-14T00:05:40",
"content": "deja vuhttps://hackaday.com/2021/12/30/threaded-wires-save-phone-numbers/",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414271",
"author": "The Commenter Fo... | 1,760,372,822.23384 | ||
https://hackaday.com/2022/01/13/ride-on-tracked-vehicle-is-a-stout-metal-build/ | Ride-on Tracked Vehicle Is A Stout Metal Build | Lewin Day | [
"Misc Hacks"
] | [
"internal combustion engine",
"tracked vehicle",
"tracks"
] | When we think of tracked vehicles, we normally think of tanks, or perhaps heavy construction machinery. Meanwhile the average member of the public is left out of the fun. [Bob] of [Making Stuff] won’t be one of them, however, having put together a ride-on tracked vehicle
for his own enjoyment.
The machine is welded tog... | 17 | 9 | [
{
"comment_id": "6414211",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2022-01-13T21:02:23",
"content": "Using buggy wheels for boogie wheels!B^)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414601",
"author": "Drone",
"... | 1,760,372,822.284312 | ||
https://hackaday.com/2022/01/13/exploring-tesla-model-s-high-voltage-cabling/ | Exploring Tesla Model S High Voltage Cabling | Chris Lott | [
"car hacks"
] | [
"automotive",
"electric vehicle",
"high voltage",
"teardown",
"Tesla Model S"
] | When he’s not busy with his day job as professor of computer and automotive engineering at Weber State University, [John Kelly] is a prolific producer of educational videos. We found his video
tracing out the 22+ meters of high voltage cabling in a Tesla Model S
(below the break) quite interesting. [John] does warn tha... | 36 | 7 | [
{
"comment_id": "6414192",
"author": "clydesdal",
"timestamp": "2022-01-13T19:43:28",
"content": "This guy is pretty good. He had an earlier series where he tore apart some toyota eCVT transmissions showing the difference between planetary and belts.",
"parent_id": null,
"depth": 1,
"re... | 1,760,372,822.360284 | ||
https://hackaday.com/2022/01/13/remoticon-2021-hash-salehi-outsmarts-his-smart-meter/ | Remoticon 2021 // Hash Salehi Outsmarts His Smart Meter | Matthew Carlson | [
"cons",
"Hackaday Columns",
"Slider"
] | [
"2021 Hackaday Remoticon",
"reverse engineer",
"smart meters"
] | Smart meters form mesh networks among themselves and transmit your usage data all around. Some of them even allow the power company to turn off your power remotely, through the mesh. You might want to know if any of this information is sensitive, or if the power shutdown system has got glaring security flaws and random... | 27 | 10 | [
{
"comment_id": "6414164",
"author": "echodelta",
"timestamp": "2022-01-13T18:30:53",
"content": "What ever happened to Broadband over powerlines that was supposed to give rural users internet and wipe out the HF spectrum? Even a little of that would have made all this Zigbee stuff moot. After all t... | 1,760,372,822.424627 | ||
https://hackaday.com/2022/01/13/impedance-matching-revisited/ | Impedance Matching Revisited | Al Williams | [
"Radio Hacks"
] | [
"impedance matching",
"LTSpice",
"RF"
] | If you are an old hand at RF design, you probably have a good handle on matching impedance. However, if you are just getting started with RF,
[FesZ Electronic]’s latest video series
on lossless impedance matching is well worth watching.
Matching is important for several reasons. Maximum power transfer occurs when the s... | 15 | 3 | [
{
"comment_id": "6414142",
"author": "Michael Black",
"timestamp": "2022-01-13T17:28:45",
"content": "Impedance matching in general used to be a bigger thing. But some of the more obvious is gone, no transformers at the output of audio amplifiers. Opamps may not do away with it, but they give near... | 1,760,372,822.628598 | ||
https://hackaday.com/2022/01/12/arduino-and-an-oled-make-this-space-invaders-cabinet-tiny/ | Arduino And An OLED Make ThisSpace InvadersCabinet Tiny | Dan Maloney | [
"classic hacks",
"Games"
] | [
"arduino nano",
"cabinet",
"miniature",
"OLED SSD1306",
"replica",
"space invaders",
"video game"
] | For as simple as it appears now,
Space Invaders
was one machine from the Golden Age of video games that always seemed to have a long line waiting for a chance to lose a couple of quarters. And by way of celebrating the seminal game’s influence, [Nick Cranch] has executed what might just be
the world’s smallest
Space In... | 15 | 7 | [
{
"comment_id": "6413892",
"author": "dendad",
"timestamp": "2022-01-12T21:11:32",
"content": "Not only is getting the Arduino and display to run all this a pretty amazing effort, the case alone is a great achievement!",
"parent_id": null,
"depth": 1,
"replies": [
{
"commen... | 1,760,372,822.581255 | ||
https://hackaday.com/2022/01/12/the-charachorder-keyboard-is-too-fast-for-competition/ | The Charachorder Keyboard Is Too Fast For Competition | Kristina Panos | [
"Hackaday Columns",
"Peripherals Hacks",
"Slider"
] | [
"chorded keyboard",
"chording",
"chording keyboard",
"keyboard"
] | We interrupt the flow of Keebin’ with Kristina to bring you this special bulletin. When three different people alert you to a keyboard within 48 hours or so, it calls for more than just a paragraph in the roundup column. So here are several paragraphs, an animated GIF, and some extended commentary about
the Charachorde... | 50 | 16 | [
{
"comment_id": "6413863",
"author": "dlcarrier",
"timestamp": "2022-01-12T18:29:55",
"content": "Yes, a typing speed test doesn’t allow macros and cording keyboards. What’s next, speed run rankings that don’t include tool-assisted speed runs?",
"parent_id": null,
"depth": 1,
"replies":... | 1,760,372,822.764823 | ||
https://hackaday.com/2022/01/12/rohde-schwarz-fsiq-signal-analyzer-if-filter-module-repair/ | Rohde & Schwarz FSIQ Signal Analyzer IF-Filter Module Repair | Maya Posch | [
"Repair Hacks"
] | [
"rohde & schwarz",
"signal analyzer"
] | Who can’t resist snapping up a piece of really expensive laboratory testing gear for next to nothing when browsing eBay or similar? Maybe it’s giving you mournful eyes when browsing through a yard sale. Often such gear is sold for cheap because it’s defective, but with a bit of attention, can be brought back to life. T... | 9 | 5 | [
{
"comment_id": "6413827",
"author": "smellsofbikes",
"timestamp": "2022-01-12T16:36:12",
"content": "This is not at all foolproof, but when I was working in electronics manufacturing, we found we could often hold a board up so a bright light reflected off it, and spot unsoldered pads because they’r... | 1,760,372,822.920386 | ||
https://hackaday.com/2022/01/12/regenerative-medicine-the-promise-of-undoing-the-ravages-of-time/ | Regenerative Medicine: The Promise Of Undoing The Ravages Of Time | Maya Posch | [
"Featured",
"Interest",
"Medical Hacks",
"Original Art",
"Science",
"Slider"
] | [
"biomedicine",
"bioprosthetics",
"medicine",
"regenerative medicine"
] | In many ways, the human body is like any other machine in that it requires constant refueling and maintenance to keep functioning. Much of this happens without our intervention beyond us selecting what to eat that day. There are however times when due to an accident, physical illness or aging the automatic repair mecha... | 15 | 10 | [
{
"comment_id": "6413809",
"author": "It's way, way more complicated than just food selection.",
"timestamp": "2022-01-12T15:15:43",
"content": "“Much of this happens without our intervention beyond us selecting what to eat that day.”So things like drinking, smoking, unprotected sex, gambling, lack ... | 1,760,372,822.87238 | ||
https://hackaday.com/2022/01/12/an-oil-diffusion-vacuum-pump-from-thrift-store-junk/ | An Oil Diffusion Vacuum Pump From Thrift Store Junk | Dan Maloney | [
"Science",
"Tool Hacks"
] | [
"fusor",
"oil diffusion",
"pump",
"vacuum pump",
"WD-40"
] | It seems like creating a vacuum should be a pretty easy job, but it turns out that sucking all the air out of something is harder than it seems. A cheap vacuum pump will get you part of the way there, but to really pull a hard vacuum, you need an oil diffusion pump that costs multiple tens of thousands of dollars.
Or, ... | 13 | 8 | [
{
"comment_id": "6413771",
"author": "macona",
"timestamp": "2022-01-12T12:08:41",
"content": "Thats.. umm.. yeah. Ill be surprised if he can get into the -4 range with that. And he wont be able to tell with that vacuum gage anyway.",
"parent_id": null,
"depth": 1,
"replies": []
},
{... | 1,760,372,822.814189 | ||
https://hackaday.com/2022/01/12/digital-rain-animation-crammed-into-pi-pico/ | Digital Rain Animation Crammed Into Pi Pico | Lewin Day | [
"classic hacks",
"Microcontrollers"
] | [
"digital rain",
"matrix",
"pi pico",
"pico",
"Raspberry Pi Pico",
"the matrix"
] | With a new
Matrix
movie now in cinemas, we’ve all been reminded of those screensavers that were just the
coolest thing ever
when the original film dropped in 1999. [en0b] decided to
recreate the classic “digital rain” effect on the Raspberry Pi Pico
, using up all the little microcontroller’s storage in the process.
Ra... | 6 | 2 | [
{
"comment_id": "6413785",
"author": "Greg",
"timestamp": "2022-01-12T13:50:24",
"content": "Given the relatively high speed of the chip, rendering the effect live instead of loading a pre-rendered animation might be the more “natural” choice for the platform?",
"parent_id": null,
"depth": 1... | 1,760,372,823.142205 | ||
https://hackaday.com/2022/01/11/synth-and-visualizer-combo-has-retrocomputing-vibe/ | Synth And Visualizer Combo Has Retrocomputing Vibe | Donald Papp | [
"Art",
"Musical Hacks"
] | [
"art",
"Intel NUC",
"midi",
"music",
"synth",
"visualizer"
] | [Love Hultén]’s latest piece of interactive art is the
SYNTH#BOI
, a super-clean build with something of the semi-cyberdeck, semi-vintage computing vibe to it. The device is a combination synthesizer and visualizer, with a 15-inch display, MIDI keyboard, and based on an
Intel NUC
i5 small form factor PC.
There are not ... | 7 | 5 | [
{
"comment_id": "6413743",
"author": "Giorgio",
"timestamp": "2022-01-12T07:45:15",
"content": "Buongiorno semplicemente Stupendo",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6413756",
"author": "Robert Link",
"timestamp": "2022-01-12T09:49:06",
... | 1,760,372,822.958577 | ||
https://hackaday.com/2022/01/11/falling-down-the-carbon-rabbit-hole/ | Falling Down The Carbon Rabbit Hole | Matthew Carlson | [
"chemistry hacks",
"News"
] | [
"carbon nanotubes",
"transistor"
] | Research projects have a funny way of getting blown out of proportion by the non-experts, over-promising the often relatively small success that the dedicated folks doing the science have managed to eke out. Scaling-up cost-effectively is one of the biggest killers for commercializing research, which is why
recent deve... | 18 | 7 | [
{
"comment_id": "6413718",
"author": "Jonathan+Wilson",
"timestamp": "2022-01-12T03:21:14",
"content": "I see all this talk about great things Carbon can do (Graphene, carbon nano tubes, etc) but (like so many advancements in technology) it never seems to leave the lab and get turned into real world... | 1,760,372,823.103538 | ||
https://hackaday.com/2022/01/11/3d-printed-sensor-for-finding-wind-direction-and-likely-much-more/ | 3D Printed Sensor For Finding Wind Direction And Likely Much More | Ryan Flowers | [
"3d Printer hacks"
] | [
"3d printing",
"gray code",
"simple hack",
"Simple Hacks",
"weather station",
"weather vane"
] | Have you ever wondered how an electronic wind vane translates a direction into a unique signal? It seems as though it might be very complicated, and indeed some of them are. [martinm] over at
yoctopuce.com
has an
excellent writeup about measuring wind direction
using just a single, easily printed disk and some phototra... | 35 | 12 | [
{
"comment_id": "6413701",
"author": "Paul",
"timestamp": "2022-01-12T00:32:51",
"content": "Yeah, Gray Code! (not grey code) And with an honorable pedigree too (see references).It’s like quadrature coding, but with 5 instead of 2 bits.But only 30 discernable positions (not 32), for reasons (see abo... | 1,760,372,823.256987 | ||
https://hackaday.com/2022/01/11/honda-ignition-coils-sing-the-song-of-their-people/ | Honda Ignition Coils Sing The Song Of Their People | Tom Nardi | [
"Parts",
"Science"
] | [
"555 timer",
"Bluetooth audio",
"high voltage",
"ignition coil",
"plasma speaker"
] | High-voltage experimenters have been using automotive ignition coils to generate impressive sparks in the home lab for decades, and why not? They’re cheap, easily obtainable, and at the end of the day, producing sparks is literally what they’re designed to do. But that doesn’t mean there isn’t room for improvement.
In ... | 7 | 6 | [
{
"comment_id": "6413685",
"author": "JD",
"timestamp": "2022-01-11T22:50:49",
"content": "Awesome. I will be building my next speakerphone shortly.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6413688",
"author": "Victor Martelli",
"timestamp": "202... | 1,760,372,823.18778 | ||
https://hackaday.com/2022/01/11/electronic-drum-toy-built-from-scratch/ | Electronic Drum Toy Built From Scratch | Lewin Day | [
"Microcontrollers",
"Musical Hacks"
] | [
"drum machine",
"drums"
] | Drum kits used to be key to any serious band, however, these days, much of our music is created on computer or using a drum machine instead. [spanceac] has built a simple example of the latter, using a microcontroller to build
a basic sample-based drum toy.
The brains of the operation is the STM32F100VET6B, which comes... | 9 | 8 | [
{
"comment_id": "6413652",
"author": "BrightBlueJim",
"timestamp": "2022-01-11T20:48:12",
"content": "This is where I head the opposite direction from “coulda’ done it with a 555”: the Raspberry Pi Pico has two 12-bit DACs, 2MB of flash and 264kB of RAM, and if latency is an issue (which it sounds l... | 1,760,372,823.2973 | ||
https://hackaday.com/2022/01/11/3d-printering-soldering-a-heated-bed/ | 3D Printering: Soldering A Heated Bed | Al Williams | [
"3d Printer hacks",
"Hackaday Columns",
"Slider"
] | [
"3d printer",
"butane",
"butane soldering iron",
"soldering"
] | There’s an old saying about something being a “drop in the ocean.” That’s how I felt faced with the prospect of replacing a 12 V heated bed on my printer with a new 24 V one. The old bed had a nice connector assembled from the factory, although I had replaced the cable long ago due to heating issues with that particula... | 62 | 35 | [
{
"comment_id": "6413608",
"author": "Rusty shackleford",
"timestamp": "2022-01-11T18:09:44",
"content": "I let my RadioShack soldering iron heat all the way up then hit the iron with a torch to bring it to a probably irresponsibly high temp and soldered it easily enough. I was removing the connecto... | 1,760,372,823.649225 | ||
https://hackaday.com/2022/01/11/reusable-booster-rockets-asian-roundup/ | Reusable Booster Rockets, Asian Roundup | Chris Lott | [
"Current Events",
"Space"
] | [
"booster",
"reusable",
"rocket",
"space"
] | The Space Shuttle’s solid rocket boosters were reusable, although ultimately the overall system didn’t prove cheaper than expendable launches. But given the successes of the Falcon 9 program — booster B1051 completed its 11th mission last month — the idea of a rocket stage returning to the launch site and being reused ... | 28 | 7 | [
{
"comment_id": "6413591",
"author": "Dude",
"timestamp": "2022-01-11T16:55:23",
"content": "> booster B1051 completed its 11th mission last monthSo what’s the bottom line? Did it actually save the cost of the recovery system and break even as foretold by Musk, or do we need to wait for more data fr... | 1,760,372,825.847112 | ||
https://hackaday.com/2022/01/11/haber-bosch-and-the-greening-of-ammonia-production/ | Haber-Bosch And The Greening Of Ammonia Production | Dan Maloney | [
"Current Events",
"Featured",
"green hacks",
"Interest",
"Original Art",
"Slider"
] | [] | We here on Earth live at the bottom of an ocean of nitrogen. Nearly 80% of every breath we take is nitrogen, and the element is a vital component of the building blocks of life. Nitrogen is critical to the backbone of proteins that form the scaffold that life hangs on and that catalyze the myriad reactions in our cells... | 47 | 19 | [
{
"comment_id": "6413557",
"author": "zupet",
"timestamp": "2022-01-11T15:10:01",
"content": "https://www.nature.com/articles/s41565-020-00809-9?proof=t%29.Mechanochemistry for ammonia synthesis under mild conditionsisn’t this the best ammonia synthesis alternative ?",
"parent_id": null,
"de... | 1,760,372,825.440946 | ||
https://hackaday.com/2022/01/10/mining-and-refining-copper-the-metal-that-built-technology/ | Mining And Refining: Copper, The Metal That Built Technology | Dan Maloney | [
"Hackaday Columns",
"Slider"
] | [
"copper",
"metal",
"Mining and Refining"
] | It’s hard to reckon exactly when in history humans became a technological species. Part of that is because the definition of technology is somewhat subjective; if you think making a stick pointy enough to grub roots from the dirt or to poke enough holes in an animal to convince it to let you eat it is technology, then ... | 16 | 10 | [
{
"comment_id": "6413348",
"author": "monsonite",
"timestamp": "2022-01-10T18:19:13",
"content": "Fascinating read, thankyou for making it accessible and easy to follow.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6413353",
"author": "BT",
"timestam... | 1,760,372,825.352839 | ||
https://hackaday.com/2022/01/10/low-cost-haptic-vr-gloves-work-with-hacked-steam-games/ | Low Cost Haptic VR Gloves Work With Hacked Steam Games | Dave Rowntree | [
"Games",
"Virtual Reality"
] | [
"Arduino-esp32",
"force feedback servo",
"glove",
"haptic",
"steam"
] | [Lucas VRTech] has made some significant progress with building
force-feedback type haptic gloves
for use with Steam VR games. The idea is pretty straightforward: the end of the finger is attached to a cable, which is pulled from inside a sprung-loaded spool; the kind used for hanging ID cards on.
The spool body can ro... | 3 | 2 | [
{
"comment_id": "6413374",
"author": "John",
"timestamp": "2022-01-10T20:54:02",
"content": "“Sprung-loaded” :’D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6413385",
"author": "iraqigeek",
"timestamp": "2022-01-10T21:49:22",
"content": "Dave,As... | 1,760,372,825.295707 | ||
https://hackaday.com/2022/01/10/open-3d-engine-amazons-old-clothes-or-a-game-engine-to-truly-get-excited-about/ | Open 3D Engine: Amazon’s Old Clothes Or A Game Engine To Truly Get Excited About? | Maya Posch | [
"Featured",
"Games",
"Interest",
"Slider",
"Software Development"
] | [
"game engines",
"o3de",
"open 3d engine",
"ue4",
"unity",
"unreal engine"
] | Recently Amazon
announced
that they would be open sourcing the 3D engine and related behind their
Amazon Lumberyard
game tooling effort. As Lumberyard is based on
CryEngine
3.8 (~2015 vintage), this raises the question of whether this new open source engine – creatively named
Open 3D Engine
(
O3DE
) – is an open sourc... | 14 | 5 | [
{
"comment_id": "6413317",
"author": "Ali Gator",
"timestamp": "2022-01-10T15:06:08",
"content": "Amazon makes games?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6413404",
"author": "McNugget",
"timestamp": "2022-01-10T23:06:54",
"... | 1,760,372,825.497139 | ||
https://hackaday.com/2022/01/10/raspberry-pi-pico-gets-a-tiny-keyboard-on-its-back/ | Raspberry Pi Pico Gets A Tiny Keyboard On Its Back | Tom Nardi | [
"Microcontrollers",
"Peripherals Hacks"
] | [
"keyboard",
"Raspberry Pi Pico",
"tiny keyboard",
"usb hid"
] | With hackers and makers building custom computing devices that don’t necessarily follow conventional design paradigms, there’s been a growing demand for smaller and smaller keyboards. Many of the cyberdecks we’ve seen over the last couple of years have used so-called 60% or even 40% keyboards, and there’s been a trend ... | 25 | 11 | [
{
"comment_id": "6413288",
"author": "Bunsen",
"timestamp": "2022-01-10T13:00:11",
"content": "So HE’s the one that bought all the damn B3U-1000Ps.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6413387",
"author": "Ryan Timothy Vasquez",
"ti... | 1,760,372,825.621684 | ||
https://hackaday.com/2022/01/10/powering-up-an-original-apple-i-after-three-decades-in-a-museum/ | Powering Up An Original Apple I After Three Decades In A Museum | Robin Kearey | [
"Retrocomputing"
] | [
"Apple I",
"computer museum"
] | The Apple I is the stuff of legend. Designed and marketed in 1976 by Steve Wozniak and Steve Jobs, it was the very first product released by what would become today’s multi-trillion-dollar manufacturer of iPhones and iMacs. With about 60 original ones known to exist today, prices at auction are commonly in the $300,000... | 27 | 9 | [
{
"comment_id": "6413248",
"author": "juergenUK",
"timestamp": "2022-01-10T09:11:20",
"content": "Great post. I just wonder, for how long the electrolytic capacitors will still last before exploding.My Beep is in the garage – but i hesitate to switch it on after about 40 years …",
"parent_id": n... | 1,760,372,825.558486 | ||
https://hackaday.com/2022/01/09/blink-an-led-on-a-pic32-with-rust-easily/ | Blink An LED On A PIC32 With Rust, Easily | Donald Papp | [
"Microcontrollers",
"Software Development"
] | [
"microcontrollers",
"pic32",
"rust"
] | Got a PIC32 microcontroller and a healthy curiousity about the
Rust
programming language and its low-level capabilities, but unsure how to squash the two of them together with a minimum of hassle? If that’s the case, then today is your lucky day!
[Harry Gill] has you covered with
his primer on programming a PIC32 with ... | 25 | 11 | [
{
"comment_id": "6413262",
"author": "kwikius",
"timestamp": "2022-01-10T10:23:58",
"content": "The obvious question. Can it blink as fast as C?#################That is a JOKE BTW.#################One would hope itcanproduce code of similar quality and so I hope the comments don’t turn into another... | 1,760,372,825.685116 | ||
https://hackaday.com/2022/01/09/peek-behind-the-curtain-of-this-robotic-mouse/ | Peek Behind The Curtain Of This Robotic Mouse | Tom Nardi | [
"Robots Hacks"
] | [
"animatronic",
"Arduino Uno",
"GT2",
"leadscrew",
"NEMA17",
"puppet",
"sg90",
"TB6600"
] | At first glance, this little animatronic mouse might seem like a fairly simple affair. A door opens, our rodent friend pops its head out, looks around, and goes back in. But just like in
The Wizard of Oz
, a strategically placed curtain is hiding
the impressive array of gadgetry that makes the trick possible
.
Creator ... | 9 | 7 | [
{
"comment_id": "6413214",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2022-01-10T04:03:45",
"content": "Topo Gigo",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6413216",
"author": "SM",
"timestamp": "2022-01-10T04:32:39",
"cont... | 1,760,372,825.254216 | ||
https://hackaday.com/2022/01/13/four-wheel-steering-always-the-option-never-the-defining-feature/ | Four Wheel Steering, Always The Option, Never The Defining Feature | Jenny List | [
"Featured",
"Interest",
"Slider",
"Transportation Hacks"
] | [
"4 wheel steering",
"4ws",
"steering"
] | A couple of weeks ago when it emerged that a new Tesla might have a four-wheel steering capability, our colleague Dan Maloney
mused aloud
as to how useful a four-wheel steering system might be, and indeed whether or not one might be necessary at all. This is hardly the first time four-wheel steering has appeared as the... | 67 | 34 | [
{
"comment_id": "6414090",
"author": "Dude",
"timestamp": "2022-01-13T15:16:35",
"content": "What if the point of it is to sell a gimmick?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414315",
"author": "Golf Aman",
"timestamp": "2022-01-1... | 1,760,372,825.956543 | ||
https://hackaday.com/2022/01/13/canon-temporarily-abandons-smart-ink-cartridges/ | Canon Temporarily Abandons Smart Ink Cartridges | Chris Lott | [
"News",
"Peripherals Hacks"
] | [
"canon",
"consumables",
"drm",
"ink cartridge",
"printers",
"toner cartridge"
] | An unexpected side effect of the global semiconductor shortage came to light this week — Japanese printer manufacturer Canon
announced they are temporarily going to provide consumable ink and toner cartridges without microchips
. Furthermore, they provided instructions for consumers on how to bypass the printer’s logic... | 49 | 10 | [
{
"comment_id": "6414019",
"author": "st01014",
"timestamp": "2022-01-13T12:11:28",
"content": "We live in a world where Ink has DRM/Louckout…Well deserved Canon",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414474",
"author": "ADam",
"time... | 1,760,372,826.0409 | ||
https://hackaday.com/2022/01/13/work-the-world-on-a-555/ | Work The World On A 555 | Jenny List | [
"Radio Hacks"
] | [
"555",
"80 metres",
"amateur radio",
"transmitter"
] | Over the years the humble 555 timer has been used in so many unexpected places,
but there’s a project from [Frank Latos] which we think may be a first
. On a piece of stripboard sit a pair of 555s, and instead of the usual passives there are a set of LC circuits. This is no timer, instead it’s a CW (Morse) transmitter ... | 14 | 5 | [
{
"comment_id": "6413995",
"author": "YGDES",
"timestamp": "2022-01-13T09:44:11",
"content": "I might remember reading about a 555 used as a radio receiver…",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414083",
"author": "duncanmcintyre",
... | 1,760,372,826.140934 | ||
https://hackaday.com/2022/01/12/arduino-ide-creates-bootable-x86-floppy-disks/ | Arduino IDE Creates Bootable X86 Floppy Disks | Tom Nardi | [
"computer hacks",
"Software Development"
] | [
"arduino",
"bootable",
"floppy",
"x86"
] | Arguably the biggest advantage of the Arduino ecosystem is how easy it is to get your code running. Type a few lines into the IDE, hit the button, and in a few seconds you’re seeing an LED blink or some text get echoed back over the serial port. But what if that same ease of use didn’t have to be limited to microcontro... | 71 | 18 | [
{
"comment_id": "6413971",
"author": "Eric Chapin",
"timestamp": "2022-01-13T06:34:30",
"content": "Budget SSFD? (solid state floppy disk) Could be useful for faster booting into DOS?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414013",
"author"... | 1,760,372,826.24726 | ||
https://hackaday.com/2022/01/12/illuminating-origami-is-just-around-the-corner/ | Illuminating Origami Is Just Around The Corner | Michael Shaub | [
"Art",
"News",
"Science"
] | [
"co2 laser",
"laser etch",
"origami",
"QLED",
"research",
"south korea",
"university"
] | Pop-up greeting cards are about to get a whole lot more interesting. Researchers at Seoul National University in Korea have created glowing 3D objects with a series of prototypes that fold thin QLED (Quantum Dot LED) sheets like origami. They used a CO
2
laser to etch “fold lines” in the QLED so the sheets could be for... | 14 | 8 | [
{
"comment_id": "6413961",
"author": "KOB",
"timestamp": "2022-01-13T04:34:20",
"content": "I’m not certain what the applications for discrete QLEDs that can be bent a few hundred times would be (though I assume they’ll be apparent at some point) but if the output is homogenous enough it could elimi... | 1,760,372,826.094012 | ||
https://hackaday.com/2022/01/12/stout-peristaltic-pump-fabricated-from-scratch/ | Stout Peristaltic Pump Fabricated From Scratch | Lewin Day | [
"hardware"
] | [
"peristalsis",
"peristaltic pump",
"pump"
] | The peristaltic pump is perhaps most well known for its ability to pump fluids without the pump mechanism coming into contact with the working fluid. This is key for food-safe applications and other situations where a pump could contaminate the fluid. [Maciej Nowak] has built
a great example of such a pump
, crafted ou... | 18 | 7 | [
{
"comment_id": "6413942",
"author": "Hirudinea",
"timestamp": "2022-01-13T00:33:42",
"content": "“STOUT PERISTALTIC PUMP”Do you mean a robust pump or a pump that pumps dark beer?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6414086",
"author": "Pr... | 1,760,372,826.307672 | ||
https://hackaday.com/2022/01/12/bitcoin-mining-asics-repurposed-to-keep-ntp-server-on-track/ | Bitcoin Mining ASICs Repurposed To Keep NTP Server On Track | Dan Maloney | [
"clock hacks"
] | [
"ASIC",
"bitcoin",
"blockchain",
"hash",
"mining",
"mqtt",
"network time protocol",
"ntp",
"oven",
"temperature"
] | They say time is money, but if that’s true, money must also be time. It’s all figurative, of course, but in the case of
this NTP server heater powered by Bitcoin mining dongles
, money actually does become time.
This is an example of the lengths to which Network Time Protocol aficionados will go in search of slightly b... | 27 | 9 | [
{
"comment_id": "6413894",
"author": "GameboyRMH",
"timestamp": "2022-01-12T21:21:41",
"content": "Idea for doing useful work – replace the ASIC miners with one or more RasPis running BOINC. Old Android phones or Android TV boxes could also do this, but the automation will be more difficult.On the t... | 1,760,372,826.409626 | ||
https://hackaday.com/2022/01/11/led-bubbles-from-the-1970s-tell-the-time/ | LED Bubbles From The 1970s Tell The Time | Al Williams | [
"classic hacks",
"clock hacks",
"Parts"
] | [
"bubble display",
"bubble led",
"clock"
] | [CuriousMarc] is nothing if not curious. Finding some old TI timekeeping chips to reverse engineer, he set out to
make a clock using old-fashioned “bubble LEDs.”
You can see the result of his tinkering in the video below. For the uninitiated, bubble LEDs are 7-segment LEDs with magnifying bubbles over each digit. These... | 15 | 8 | [
{
"comment_id": "6413523",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2022-01-11T12:40:59",
"content": "If you do have working HP bubble displays, please don’t use them for projects like this!They are needed for restoration of HP calculators from the same period.See hpmuseum.org"... | 1,760,372,826.459026 | ||
https://hackaday.com/2022/01/11/the-atari-punk-console-now-with-more-vacuum-tubes/ | The Atari Punk Console, Now With More Vacuum Tubes | Dan Maloney | [
"classic hacks",
"Musical Hacks"
] | [
"555",
"apc",
"astable",
"atari punk console",
"monostable",
"oscillator",
"synth",
"vacuum tube"
] | Most of us have beheld the sonic glory of an Atari Punk Console, that lo-fi synth whose classic incarnation is a pair of 555 timers set up to warble and bleep in interesting ways. Very few of us, however, have likely seen an
APC built from 555s that are made from vacuum tubes
.
It’s little surprise to regular readers t... | 7 | 4 | [
{
"comment_id": "6413503",
"author": "Elliot Williams",
"timestamp": "2022-01-11T10:20:31",
"content": "I always love how the “analog” audio folks complain about how “digital” digital synths sound.This is a fully _tube_ synth that sounds just as squeaky-squawky a pair of 555s. :)",
"parent_id":... | 1,760,372,826.349358 | ||
https://hackaday.com/2022/01/10/hitclips-custom-cartridge-hack-will-never-give-up-let-down-or-turn-around/ | HitClips Custom Cartridge Hack Will Never Give Up, Let Down, Or Turn Around | Ryan Flowers | [
"classic hacks"
] | [
"3d printed",
"cartridge",
"music",
"portable player",
"SAM D09"
] | In August 2000, Tiger Electronics released HitClips: Music cartridges and players designed to easily share 60 second low quality Clips of a youngster’s favorite Hits. Various players were available, and individual cartridges were inexpensive enough to collect. And it’s these toy music players that [Guy Dupont] has been... | 11 | 6 | [
{
"comment_id": "6413473",
"author": "John",
"timestamp": "2022-01-11T06:49:15",
"content": "Wow, that’s a really cool hack. I love the idea of hacking retro things to give them new functionality. It’s really too bad the quality of the player is so low. It basically kills all motivation to recreate ... | 1,760,372,826.528282 | ||
https://hackaday.com/2022/01/10/this-john-deere-tractor-doesnt-need-a-driver/ | This John Deere Tractor Doesn’t Need A Driver | Al Williams | [
"News"
] | [
"autonomous driving",
"autonomous tractor",
"autonomous vehicle",
"john deere",
"tractor"
] | While most autonomous vehicles are meant to travel over the highway, John Deere’s new
8R tractor
shown at the 2022 Consumer Electronics Show will likely only traverse fields and it will do so without a human at the wheel.
The tractor is slated to be available to farmers in late 2022 and has six pairs of stereo cameras ... | 50 | 17 | [
{
"comment_id": "6413434",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2022-01-11T03:08:21",
"content": "Old farmer joke:“Did you know that John Deere is coming out with a tractor that doesn’t have a steering wheel or a seat?”“Really???”“Yeah, it’s for farmers who have lost their ... | 1,760,372,826.613606 | ||
https://hackaday.com/2022/01/10/get-a-grip-on-troubleshooting-your-vintage-pinball-machine/ | Get A Grip On Troubleshooting Your Vintage Pinball Machine | Chris Wilkinson | [
"Games",
"Repair Hacks"
] | [
"electromechanical",
"pinball",
"vintage"
] | Restoring vintage technology can be a tricky business, especially without the appropriate schematics and documentation. To this end [Mark] has spent the past twelve months building a
comprehensive schematic editor and circuit simulator library for electromechanical pinball machines
.
Rather than explore each and every ... | 1 | 1 | [
{
"comment_id": "6413588",
"author": "pmhupman",
"timestamp": "2022-01-11T16:50:46",
"content": "This is well timed since I just got an old Williams Super Flite machine to bring back to life. Don’t know if I can simulate the whole thing since the schematic is over 7 feet long and 24 inches wide.",
... | 1,760,372,826.64671 | ||
https://hackaday.com/2022/01/10/a-simple-emf-detector-and-electroscope-you-can-make-from-junk-box-parts/ | A Simple EMF Detector And Electroscope You Can Make From Junk Box Parts | Dave Rowntree | [
"hardware"
] | [
"4017",
"electroscope",
"emf detector",
"NPN bipolar"
] | 2N2222 devices used, but practically any junkbox NPN will do
Electromagnetic fields are everywhere, all around us. Some are generated naturally, but in vast majority of cases, it’s we humans that are generating them with artificial, electronic means. Everything from your mobile phone to the toaster will emit some sort ... | 48 | 11 | [
{
"comment_id": "6413380",
"author": "BT",
"timestamp": "2022-01-10T21:24:05",
"content": "“sorry, but [Mirko] is from North Macedonia, and they use 50 Hz AC”I wonder why you feel it necessary to appologise for the creator of these devices having 50Hz AC mains? HAD has a large international readersh... | 1,760,372,826.86505 | ||
https://hackaday.com/2022/01/10/this-little-minecraft-mine-cart-of-mine/ | This Little Minecraft Mine Cart Of Mine | Matthew Carlson | [
"Transportation Hacks"
] | [
"cnc",
"minecart",
"minecraft",
"rail",
"tracks",
"train"
] | [Joel] of Joel Creates loves trains and Minecraft. So what better way to combine them than to make a
real-life electric mine cart and ride it around
?
At first glance, it seems pretty straightforward. Four wheels, each with a flange, mounted to a box with a motor. In practice, it was a little more complex than that. Ju... | 8 | 5 | [
{
"comment_id": "6413359",
"author": "Ali Gator",
"timestamp": "2022-01-10T19:40:26",
"content": "Wow, those tracks held up pretty well for being unused so long.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6413371",
"author": "C. Scott Ananian",
... | 1,760,372,826.781994 | ||
https://hackaday.com/2022/01/08/hidden-shaft-and-gears-make-this-hollow-clock-go/ | Hidden Shaft And Gears Make This Hollow Clock Go | Donald Papp | [
"Art",
"clock hacks"
] | [
"3d printed",
"art",
"clock",
"clock movement",
"hidden"
] | [shiura]’s
Hollow Clock 3
is a fantastic 3D printed take on a clock movement that uses a hidden mechanism to pull off its unusual operation. The Hollow Clock has no face, just an open space with an hour and minute hand that move as expected. Only the longer minute hand has any apparent connection to the rest of the clo... | 20 | 9 | [
{
"comment_id": "6413011",
"author": "jonsmirl",
"timestamp": "2022-01-09T03:30:26",
"content": "Another way to do this might be to permanently fix the minute hand to the white part, and then use a mechanism in the base to spin the white part. Embed wires in the minute hand and then use a motor in ... | 1,760,372,826.93205 | ||
https://hackaday.com/2022/01/08/modernizing-the-game-boy-advance/ | Modernizing The Game Boy Advance | Al Williams | [
"classic hacks",
"Nintendo Game Boy Hacks"
] | [
"game boy",
"game boy advance"
] | [Zekfoo] decided to honor the Game Boy Advance’s 20th birthday by
redesigning it at the circuit level to give it a more modern twist
. To quote the project readme:
I really want to like the Game Boy Advance. Growing up with a GBA SP, I was spoiled by its clicky buttons, rechargeable battery, and illuminated screen. Whe... | 9 | 4 | [
{
"comment_id": "6413008",
"author": "pelrun",
"timestamp": "2022-01-09T02:56:54",
"content": "“Special thanks to everyone who compiled the critical information I used and made it freely available. Not that I respect them enough to pass it on.”",
"parent_id": null,
"depth": 1,
"replies":... | 1,760,372,826.977217 | ||
https://hackaday.com/2022/01/08/de10-lite-ful-fpga-dev-board-hack-plays-the-1981-classic-defender/ | DE10-Lite-Ful FPGA Dev Board Hack Plays The 1981 Classic Defender | Ryan Flowers | [
"FPGA",
"Games"
] | [
"classic games",
"defender",
"fpga"
] | We’re not sure what the assignment was, but the results of [Garret Carter]’s homework for his Digital System Design class at Tennessee Tech couldn’t help but capture our attention. Below the break you can see what [Garrett] describes as a “
simplified stylized version” of the 1981 arcade hit “Defender”
.
With the goal ... | 6 | 6 | [
{
"comment_id": "6412976",
"author": "Xark",
"timestamp": "2022-01-08T22:35:49",
"content": "Looking very nice! I like the smooth hi-res stars combined with the more retro Defender-esque “sprites”.Not using a “soft core” CPU for this, but all done with VHDL logic (it looks like). A somewhat challe... | 1,760,372,827.018482 | ||
https://hackaday.com/2022/01/08/advanced-pcb-graphics-with-kicad-6-and-inkscape/ | Advanced PCB Graphics With KiCAD 6 And Inkscape | Dave Rowntree | [
"hardware",
"how-to"
] | [
"graphics",
"KiCAD",
"learning",
"tutorial"
] | There are many, many video tutorials about designing the functional side of PCBs, giving you tips on schematic construction, and layout tips. What is a little harder to find are tutorials on the graphical aspects, covering the process from creating artworks and how you can drive the tools to get them looking good on a ... | 16 | 8 | [
{
"comment_id": "6412942",
"author": "Per Jensen",
"timestamp": "2022-01-08T19:15:05",
"content": "Is there missing a word in here “it would be wise to the layers feature”?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6412959",
"author": "Dave Rown... | 1,760,372,827.070106 | ||
https://hackaday.com/2022/01/08/the-year-of-owning-it/ | The Year Of Owning It | Elliot Williams | [
"Hackaday Columns",
"Rants",
"Slider"
] | [
"consumer",
"diy",
"everything as a service",
"reverse engineering"
] | Talking over the year in review on
the Podcast
, Tom Nardi and I were brainstorming what we thought was
the single overarching trend in 2021
, and we came up with many different topics: victories in the right to repair, increasingly dystopian service contracts, a flourishing of cyberdecks, and even greater prevalence o... | 41 | 11 | [
{
"comment_id": "6412907",
"author": "Gravis",
"timestamp": "2022-01-08T16:40:16",
"content": "I think the real lesson here is to not buy internet dependent goods. People like me knew they would be a disaster and they have proven to be just that. They take away control and have horrible security. ... | 1,760,372,827.144944 | ||
https://hackaday.com/2022/01/08/vw-power-steering-reverse-engineering/ | Baby Steps Toward DIY Autonomous Driving: VW Golf Edition | Dave Rowntree | [
"car hacks"
] | [
"canbus",
"firmware",
"Ghidra",
"kali linux",
"multi chip module",
"OpenPilot",
"Renesas V850",
"reverse engineering",
"volkswagen"
] | Nice thermal design, but conformal coating and no ID marks make this tough to reverse engineer
[Willem Melching] owns a 2010 Volkswagen Golf – a very common vehicle in Europe – and noticed that whilst the electronic steering rack supports the usual Lane Keep Assist (LKAS) system, and would be theoretically capable of o... | 18 | 8 | [
{
"comment_id": "6412866",
"author": "Chris",
"timestamp": "2022-01-08T12:19:51",
"content": "This is what I come here for. Awesome!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6412892",
"author": "kwikius",
"timestamp": "2022-01-08T15:31:... | 1,760,372,827.218282 | ||
https://hackaday.com/2022/01/08/555-timer-on-its-own-in-electronic-dice/ | 555 Timer On Its Own In Electronic Dice | Bryan Cockfield | [
"clock hacks"
] | [
"555",
"cd4017",
"circuit",
"clock",
"dice",
"electronic",
"logic",
"NE555",
"random number",
"timer"
] | One of the most common clichés around here is that a piece of equipment chosen for a project is always too advanced. If a Raspberry Pi was used, someone will say they should have used an Arduino. If they use an Arduino, it should have been an ATtiny. And of course, if an ATtiny was used, there should have simply been a... | 18 | 9 | [
{
"comment_id": "6412837",
"author": "wiz",
"timestamp": "2022-01-08T09:01:27",
"content": "This could have been built using only transistors",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6412932",
"author": "Elliot Williams",
"timestamp": "... | 1,760,372,827.314371 | ||
https://hackaday.com/2022/01/09/hackaday-links-january-9-2022/ | Hackaday Links: January 9, 2022 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links",
"Slider"
] | [
"dental hacks",
"diet",
"dishy mcflatface",
"hackaday links",
"james webb space telescope",
"jwst",
"low poly",
"mandible",
"nintendo",
"Starlink"
] | It looks like we have a new space observatory!
According to NASA
, all the major deployments on the James Webb Space Telescope have been completed successfully. This includes the tricky
sunshield deployment and tensioning
, which went off this week without much in the way of trouble. The final major deployment, the unf... | 10 | 6 | [
{
"comment_id": "6413197",
"author": "Hirudinea",
"timestamp": "2022-01-10T00:48:21",
"content": "“Damn Starlink, I not getting anything except cat videos!”",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6413210",
"author": "CityZen",
"timest... | 1,760,372,827.263908 | ||
https://hackaday.com/2022/01/09/fail-of-the-week-3d-printed-parts-that-burn-like-nasas-rocket-fuel/ | Fail Of The Week: 3D Printed Parts That Burn Like NASA’s Rocket Fuel | Dave Rowntree | [
"3d Printer hacks",
"Engine Hacks"
] | [
"3d printed rocket engine",
"3D resin printer"
] | [Integza] is on a mission to find as many ways as possible to build rockets and other engines using 3D printing and other accessible manufacturing techniques. He had an a great idea –
is it possible to 3D print a solid fuelled rocket
, (video, embedded below) specifically can you 3D print the rocket grain itself? By us... | 21 | 7 | [
{
"comment_id": "6413169",
"author": "Hirudinea",
"timestamp": "2022-01-09T21:48:20",
"content": "I wonder if you could make a “real” (you know, shoot something into orbit) with this? Just solid fuel, a graphite nozzle and a very cheap carbon fiber body, only strong enough to hold itself and cargo u... | 1,760,372,827.38039 | ||
https://hackaday.com/2022/01/09/macropopsicle-melts-on-your-desk-not-in-your-mouth/ | Macropopsicle Melts On Your Desk, Not In Your Mouth | Kristina Panos | [
"Microcontrollers",
"Peripherals Hacks"
] | [
"adafruit QtPy",
"macro keyboard",
"macro pad",
"macropad",
"popsicle"
] | We all know by now that macropads are super cool shortcut machines. And what’s cooler than a popsicle? Well, this cute little thing, which goes by the name of Macropopsicle.
The freezer’s open if you want your own Macropopsicle
. There’s not much more to this tasty and practical desktop treat than an adafruit QT Py, a ... | 6 | 4 | [
{
"comment_id": "6413154",
"author": "Grounded",
"timestamp": "2022-01-09T19:45:30",
"content": "Now to combine this with the taste output device posted a little while ago…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6413160",
"author": "Feinfinger (M-x... | 1,760,372,827.421882 | ||
https://hackaday.com/2022/01/09/portable-pi-powered-music-player/ | Portable PI Powered Music Player | Matthew Carlson | [
"handhelds hacks",
"Musical Hacks",
"Raspberry Pi"
] | [
"media player",
"raspberry pi"
] | There was a brief time in the early 2000s when we carried cellphones, wallets, keys, and a bespoke digital media player loaded with a small selection of our music libraries. Devices like iPods, Zunes, Sandisk Sansa, and iRiver. Then as cell phones gained more storage and processing power, the two devices became one, an... | 13 | 7 | [
{
"comment_id": "6413114",
"author": "Ale",
"timestamp": "2022-01-09T15:22:08",
"content": "Zunes ? nay… did someone buy one of those ? I remember reading “The inquirer” at the time, they were very acid with their comments, and on one comment someone wrote “I’ll put this tune in my zune” I think th... | 1,760,372,827.504362 | ||
https://hackaday.com/2022/01/09/automated-mushroom-cultivation-yields-delicious-fried-goodies/ | Automated Mushroom Cultivation Yields Delicious Fried Goodies | Donald Papp | [
"chemistry hacks",
"cooking hacks",
"Raspberry Pi"
] | [
"automation",
"environment control",
"fungi",
"fungiculture",
"mushrooms",
"raspberry pi"
] | [Kyle Gabriel] knows mushrooms, and his years of experience really shine through in his
thorough documentation of an automated mushroom cultivation environment
, created with off-the-shelf sensors and hardware as much as possible. The results speak for themselves, with some delicious fried oyster mushrooms to show for ... | 30 | 14 | [
{
"comment_id": "6413067",
"author": "Nath",
"timestamp": "2022-01-09T13:29:43",
"content": "The combination of skills (microbiology, woodworking, electronics, software engineering) that this person master to turn this project into a reality is nothing short of astonishing. Really great project.",
... | 1,760,372,827.5801 | ||
https://hackaday.com/2022/01/09/powering-up-a-135-scale-panther-tank/ | Pi Powered 1:35 Scale Panther Tank | Tom Nardi | [
"Toy Hacks"
] | [
"gear motor",
"Raspberry Pi Zero",
"RC tank",
"remote control",
"tamiya"
] | Tank aficionado [Daniel Zalega] has enjoyed playing around with armored fighting vehicles in the digital realm for years, but only recently realized he had the technology and skills necessary to take his passion into the physical world. Albeit on a slightly reduced scale. So he bought a 1:35 plastic model kit for the G... | 6 | 4 | [
{
"comment_id": "6413042",
"author": "ConductiveInsulation",
"timestamp": "2022-01-09T10:39:53",
"content": "I have 3 R/C tanks in 1/16 with binary controls, thought about modifying their controls when I have finished a few other projects. Had a Xbox Controller in my mind. I’d need a lot more spare ... | 1,760,372,827.667447 | ||
https://hackaday.com/2022/01/08/adding-an-audio-jack-to-classic-headphones-is-a-nifty-upgrade/ | Adding An Audio Jack To Classic Headphones Is A Nifty Upgrade | Lewin Day | [
"Portable Audio Hacks",
"Repair Hacks"
] | [
"headphones",
"TRS",
"trs jack"
] | One of the most common ways to junk a pair of headphones is to damage the cord. Obviously, the lead can be repaired, but it involves busting out the soldering iron and can be tedious when dealing with the tiny little coated wires.
It does involve soldering, but ideally, you only have to do it once.
[mauriziomiscio.mm] ... | 15 | 8 | [
{
"comment_id": "6413040",
"author": "12L14",
"timestamp": "2022-01-09T10:27:57",
"content": "Or mini xlr(like they did in K141 MkII).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6413043",
"author": "Harvie.CZ",
"timestamp": "2022-01-09T11:21:08",
... | 1,760,372,827.842489 | ||
https://hackaday.com/2022/01/07/playing-super-hang-on-with-hacked-controller-gives-reason-for-paws/ | Playing Super Hang-On With Hacked Controller Gives Reason For Paws | Ryan Flowers | [
"classic hacks",
"Games"
] | [
"arcade controller",
"game controller",
"game controller hack",
"super hang-on"
] | There’s a thing that happens when you’re shopping at a second hand store. You know how it goes: You see an item that strikes your fancy, your mind immediately locks in, and the item just has to be yours. [Tom Tilley] experienced this when he saw a Paw Patrol kids toy at a local thrift store, and you can see
the results... | 4 | 3 | [
{
"comment_id": "6412998",
"author": "Yeshua Watson",
"timestamp": "2022-01-09T01:01:58",
"content": "While not terribly impressive, I’m still jealous that I didn’t think of doing this when I threw this toy away about a year ago. Although maybe I’m misremembering, but I could have sworn the handles ... | 1,760,372,827.70495 | ||
https://hackaday.com/2022/01/07/production-pcb-and-pogo-pins-produce-a-clever-test-jig/ | Production PCB And Pogo Pins Produce A Clever Test Jig | Dave Rowntree | [
"hardware",
"Tool Hacks"
] | [
"ATE",
"Pogo pin",
"Test jig"
] | [Hans Summers] runs a site qrp-labs.com, selling self-assembly kits mostly for radio gear and GPS applications, and had some production problems with his QCX-mini QRP transceiver kit. They were using an assembly house that had some problems with a sub-contractor going under during the pandemic, and the replacement serv... | 13 | 6 | [
{
"comment_id": "6412841",
"author": "Hans Summers",
"timestamp": "2022-01-08T09:11:49",
"content": "Wow, I know that hackerMinor correction: it wasn’t my QCX+ that had the SMD problem. It was the QCX-minihttp://qrp-labs.com/qcxminiFYI the test jig is still going strong almost a year after construct... | 1,760,372,827.892642 | ||
https://hackaday.com/2022/01/07/slither-a-visual-pedometer-that-sheds-light/ | Slither: A Visual Pedometer That Sheds Light | Kristina Panos | [
"LED Hacks",
"Lifehacks"
] | [
"Feather huzzah",
"leds",
"pedometer",
"step counter"
] | Have you already broken that New Year’s resolution to get more exercise? Yeah, us too. Maybe the problem is simply that we didn’t gamify the goal. A simple visual aid that shows your progress can help make a goal more achievable and easier to stick to, day after January day. That’s the idea behind [skhackett]’s
Slither... | 0 | 0 | [] | 1,760,372,827.929867 | ||
https://hackaday.com/2022/01/07/tiger-boy-advance-is-a-90s-kid-dream-come-true/ | Tiger Boy Advance Is A 90s Kid Dream Come True | Tom Nardi | [
"classic hacks",
"Nintendo Game Boy Hacks"
] | [
"3D printed enclosure",
"game boy advance",
"GBC",
"lcd games",
"tiger",
"Tiger Electronics"
] | From the release of the DMG-01 in 1989 until the final Micro variant hit store shelves in 2005, the Nintendo Game Boy line represented the epitome of handheld gaming for hundreds of millions of players. But that’s not to say there weren’t a wide array of other handheld systems that aimed to chip away at the Japanese ga... | 6 | 6 | [
{
"comment_id": "6412758",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2022-01-07T23:01:28",
"content": "“But [Chris] didn’t make this for us”Ofc NOT! If he had, he would’ve used a 555!B^)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6412... | 1,760,372,827.977785 | ||
https://hackaday.com/2022/01/07/a-savage-discussion-of-measurement-and-accuracy/ | A Savage Discussion Of Measurement And Accuracy | Ryan Flowers | [
"classic hacks",
"Tool Hacks"
] | [
"accuracy",
"adam savage",
"measurement",
"meters",
"microns",
"nanometers"
] | It’s commonly said that the great thing about standards is that there are so many of them. Of course, that’s talking about
competing
standards. But there’s another kind of standard that you
want
a lot of: Measurements. Without standard measurements, the Industrial Revolution wouldn’t have been facilitated to the extent... | 69 | 20 | [
{
"comment_id": "6412693",
"author": "Amen",
"timestamp": "2022-01-07T19:38:09",
"content": "Resolution and accuracy are not the same thing.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6412698",
"author": "three_d_dave",
"timestamp": "2022... | 1,760,372,828.079832 | ||
https://hackaday.com/2022/01/07/books-you-should-read-the-perfectionists/ | Books You Should Read: The Perfectionists | Sonya Vasquez | [
"Featured",
"Interest",
"Original Art",
"Reviews",
"Slider"
] | [
"engineering history",
"history",
"metrology",
"precision",
"precision engineering",
"simon winchester",
"tolerances"
] | After pulling late hours in my school machine shop for a few years, I couldn’t help but wonder,
who measures the measurement tools? How did they come to be?
I’d heard anecdotes from other students and engineers while they inspected my freshly machined parts, but these stories were one-offs. What I wanted was a tale of ... | 28 | 9 | [
{
"comment_id": "6412672",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2022-01-07T18:21:06",
"content": "I wish I could have written book reports like that when I was a kid!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6412676",
"autho... | 1,760,372,828.141363 | ||
https://hackaday.com/2022/01/07/hackaday-podcast-150-blackberry-runs-out-of-juice-node-has-your-pinouts-rats-learn-doom-and-2021-is-done/ | Hackaday Podcast 150: Blackberry Runs Out Of Juice, NODE Has Your Pinouts, Rats LearnDOOM, And 2021 Is Done | Tom Nardi | [
"Hackaday Columns",
"Podcasts",
"Slider"
] | [
"Hackaday Podcast"
] | Join Hackaday Editor-in-Chief Elliot Williams and Managing Editor Tom Nardi as they ring in the New Year with the first podcast episode of 2022. We get the bad news out early for those still thumbing away at their Blackberries, then pivot into some of the highlights from over the holidays such as the release of NODE’s
... | 4 | 1 | [
{
"comment_id": "6412827",
"author": "BrightBlueJim",
"timestamp": "2022-01-08T06:51:16",
"content": "Yeah, most hookup wire is PVC-insulated.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6412898",
"author": "Elliot Williams",
"timestamp": ... | 1,760,372,828.181001 | ||
https://hackaday.com/2022/01/07/how-many-wires-do-you-need-to-measure-a-resistor/ | How Many Wires Do You Need To Measure A Resistor? | Al Williams | [
"Tool Hacks"
] | [
"4-wire",
"6-wire",
"resistance"
] | Measuring resistance doesn’t seem to be a big deal. Put your meter leads across two wires or terminals and read the value, right? Most of the time that is good enough, but sometimes you need better methods and for those,
you need more wires
, as [FesZ] explains in his recent video that you can see below.
In the usual c... | 13 | 8 | [
{
"comment_id": "6412653",
"author": "janus199",
"timestamp": "2022-01-07T17:10:04",
"content": "“For one thing, the test leads have resistance as well.”Would it make sense to measure resistance across the probes (touch them together) and offset the measurement by that amount? Make it a function wh... | 1,760,372,828.232246 | ||
https://hackaday.com/2022/01/07/this-week-in-securityy2k22-accidentally-blocking-911and-bug-alert/ | This Week In Security: Y2K22, Accidentally Blocking 911, And Bug Alert | Jonathan Bennett | [
"Hackaday Columns",
"Security Hacks",
"Slider"
] | [
"exchange",
"SSRF",
"This Week in Security",
"wordpress",
"Y2k22"
] | If you had the misfortune of running a Microsoft Exchange server this past week, then you don’t need me to
tell you about the Y2K22 problem
. To catch rest of us up, when Exchange tried to download the first malware definitions update of 2022, the version number of the new definitions triggered a crash in the malware d... | 45 | 12 | [
{
"comment_id": "6412614",
"author": "YGDES",
"timestamp": "2022-01-07T15:19:01",
"content": "The Y2K22 is probably the dumbest, moronic, self-inflicted pain that Microsoft has published lately. How is it EVEN possible ? WHO wrote that piece of code ?",
"parent_id": null,
"depth": 1,
"re... | 1,760,372,828.312893 | ||
https://hackaday.com/2022/01/07/psylink-an-open-source-neural-interface-for-non-invasive-emg/ | PsyLink An Open Source Neural Interface For Non-Invasive EMG | Dave Rowntree | [
"Medical Hacks"
] | [
"analog",
"arduino",
"electromyography",
"emg",
"GnuRadio",
"instrumentation amp",
"op-amp",
"python"
] | We don’t see many EMG (electromyography) projects, despite how cool the applications can be. This may be because of technical difficulties with seeing the tiny muscular electrical signals amongst the noise, it could be the difficulty of interpreting any signal you do find. Regardless, [hut] has been striving forwards w... | 30 | 11 | [
{
"comment_id": "6412569",
"author": "Attentive observer",
"timestamp": "2022-01-07T12:11:36",
"content": "Wow, this looks indeed great. But for some of the movements (punch-like forward movement, twisting/rotating the arm) I am sure that they can be detected using a gyro/acceleration sensor more ea... | 1,760,372,828.385312 | ||
https://hackaday.com/2022/01/07/ceefax-lives-courtesy-of-a-raspberry-pi/ | CEEFAX Lives! (Courtesy Of A Raspberry Pi) | Jenny List | [
"home entertainment hacks",
"Software Hacks"
] | [
"ceefax",
"raspberry pi",
"teletext"
] | As analogue TV slides from memory, there’s a facet of it that’s fondly remembered by a band of enthusiasts. Teletext was an electronic viewdata information service digitally encoded in the frame blanking period, and a TV set with a decoder chip would provide access to many pages of news and other services all displayed... | 28 | 14 | [
{
"comment_id": "6412519",
"author": "BT",
"timestamp": "2022-01-07T09:22:27",
"content": "Very nice, very clever, and took me right back!I always admired the Teletext system for the utility they managed to get out of the technology of the era, all as a hack-on to the standard TV signal while remain... | 1,760,372,828.451289 | ||
https://hackaday.com/2022/01/06/tiny-led-matrix-panels-tile-together-perfectly/ | Tiny LED Matrix Panels Tile Together Perfectly | Dan Maloney | [
"LED Hacks"
] | [
"led",
"matrix",
"rgb",
"SK6805",
"tesselate",
"TILE"
] | There’s a lot to admire about LED matrix projects, which more often than not end up looking really cool. But most of them rely on RGB matrix panels sourced from the surplus market, and while there’s nothing wrong with that, building your own
tiny, tileable LED matrix panels
makes these builds just a little bit cooler.
... | 15 | 7 | [
{
"comment_id": "6412515",
"author": "glaskows",
"timestamp": "2022-01-07T08:57:09",
"content": "I wonder what would be the best way to have a black pixel. The problem of most of this diffused led matrices is that they look white-ish when turned off. Is it enough to use a dark diffuser or do you nee... | 1,760,372,828.538789 | ||
https://hackaday.com/2022/01/06/how-do-capacitors-work/ | How Do Capacitors Work? | Al Williams | [
"Science"
] | [
"capacitors",
"physics"
] | If you are like [The Science Asylum], you might wonder how
a capacitor can work
since, at their core, they are nothing more than a gap filled with air or another insulator. He explains how in a recent video you can see below.
Of course, at DC, a capacitor doesn’t conduct any better than the insulator used as its dielec... | 6 | 4 | [
{
"comment_id": "6412486",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2022-01-07T04:25:45",
"content": "How do capacitors work?Fine, usually.B^)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6412589",
"author": "ratStomper",
... | 1,760,372,828.49022 |
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