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https://hackaday.com/2025/03/22/acoustic-levitation-gets-insects-ready-for-their-close-up/ | Acoustic Levitation Gets Insects Ready For Their Close-Up | Tom Nardi | [
"digital cameras hacks",
"FPGA"
] | [
"acoustic levitation",
"Photogrammetry",
"ultrasonic levitation"
] | The average Hackaday reader is likely at least familiar with acoustic levitation — a technique by which carefully arranged ultrasonic transducers can be used to suspend an object in the air indefinitely. It’s a neat trick, the sort of thing that drives them wild at science fairs, but as the technique only works on exce... | 6 | 1 | [
{
"comment_id": "8111454",
"author": "Gogu",
"timestamp": "2025-03-22T19:19:18",
"content": "Wonder if that insect goes deaf…lol",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8111493",
"author": "Tim",
"timestamp": "2025-03-23T00:18:02",
... | 1,760,371,600.069554 | ||
https://hackaday.com/2025/03/22/thanks-for-hackaday-europe/ | Thanks For Hackaday Europe! | Elliot Williams | [
"cons",
"Hackaday Columns"
] | [
"2025 Hackaday Europe",
"Culture"
] | We just got back from Hackaday Europe last weekend, and we’re still coming down off the high. It was great to be surrounded by so many crazy, bright, and crazy-bright folks all sharing what they are pouring their creative energy into.
The talks were great
, and the discussions and impromptu collaborations have added dr... | 10 | 6 | [
{
"comment_id": "8111414",
"author": "Sebastian",
"timestamp": "2025-03-22T16:04:16",
"content": "It was a good event, well put together and organized. Only thing i’d change is the stage, it was sometimes difficult to follow a presentation with all the loud conversation of the hackers doing their pr... | 1,760,371,599.847277 | ||
https://hackaday.com/2025/03/22/the-fastest-ms-dos-gaming-pc-ever/ | The Fastest MS-DOS Gaming PC Ever | Maya Posch | [
"Retrocomputing"
] | [
"benchmark",
"ISA cards",
"ms-dos"
] | After [Andy]’s discovery of an old ISA soundcard at his parents’ place that once was inside the family PC, the onset of a wave of nostalgia for those old-school sounds drove him off the deep end. This is how we get [Andy] building
the fastest MS-DOS gaming system ever
, with ISA slot and full hardware compatibility. Af... | 28 | 9 | [
{
"comment_id": "8111371",
"author": "paulvdh",
"timestamp": "2025-03-22T12:11:08",
"content": "Euhm, LPC is pretty much a serialized version of the ISA bus, not of the PCI bus as mentioned above.https://en.wikipedia.org/wiki/Low_Pin_Count",
"parent_id": null,
"depth": 1,
"replies": [
... | 1,760,371,600.183062 | ||
https://hackaday.com/2025/03/22/biosynthesis-of-polyester-amides-in-engineered-escherichia-coli/ | Biosynthesis Of Polyester Amides In Engineered Escherichia Coli | Maya Posch | [
"Science"
] | [
"biopolymer",
"E coli"
] | Polymers are one of the most important elements of modern-day society, particularly in the form of plastics. Unfortunately most common polymers are derived from fossil resources, which not only makes them a finite resource, but is also problematic from a pollution perspective. A potential alternative being researched i... | 8 | 5 | [
{
"comment_id": "8111356",
"author": "Dan",
"timestamp": "2025-03-22T10:29:21",
"content": "This seems really neat… though I’m imagining people getting food poisoning and vomiting up plastic pellets! … actually that might be an improvement!I’m not that familiar with PEA but it looks to be very biode... | 1,760,371,599.799601 | ||
https://hackaday.com/2025/03/21/a-cute-handheld-gaming-device-that-you-can-build-in-an-altoids-tin/ | A Cute Handheld Gaming Device That You Can Build In An Altoids Tin | Lewin Day | [
"handhelds hacks",
"Raspberry Pi"
] | [
"altoids tin",
"handheld",
"raspberry pi"
] | The MintyPi was a popular project that put a Raspberry Pi inside an Altoids tin to make a pocketable gaming handheld. Unfortunately, it’s not the easiest build to replicate anymore, but [jackw01] was still a fan of the format. Thus was born the Pi Tin—
a clamshell handheld for portable fun
!
Neat, huh? More pocket-size... | 10 | 5 | [
{
"comment_id": "8111300",
"author": "Joshua",
"timestamp": "2025-03-22T05:50:33",
"content": "By the looks, it reminds me of the 1&1 Pocket Web that had been heavily advertised in my country some 20 years ago.https://de.wikipedia.org/wiki/Pocket_Web",
"parent_id": null,
"depth": 1,
"rep... | 1,760,371,599.939082 | ||
https://hackaday.com/2025/03/21/producing-syngas-from-co2-and-sunlight-with-direct-air-capture/ | Producing Syngas From CO2 And Sunlight With Direct Air Capture | Maya Posch | [
"green hacks",
"Science"
] | [
"carbon dioxide",
"syngas"
] | The prototype DACCU device for producing syngas from air. (Credit: Sayan Kar, University of Cambridge)
There is more carbon dioxide (CO
2
) in the atmosphere these days than ever before in human history, and while it would be marvelous to use these carbon atoms for something more useful, capturing CO
2
directly from th... | 17 | 6 | [
{
"comment_id": "8111340",
"author": "Foldi-One",
"timestamp": "2025-03-22T09:21:08",
"content": "Seems like a very long way to go before a concept like this can be engineered and scaled to something of practical value but I do like the approach conceptually. Though I’m not convinced the solar energ... | 1,760,371,600.019143 | ||
https://hackaday.com/2025/03/21/moving-software-down-to-hardware/ | Moving Software Down To Hardware | Bryan Cockfield | [
"hardware"
] | [
"communications",
"counter",
"hardware",
"i2c",
"programming",
"shift register"
] | In theory, any piece of software could be built out of discrete pieces of hardware, provided there are enough transistors, passive components, and time available. In general, though, we’re much more likely to reach for a programmable computer or microcontroller for all but the simplest tasks for several reasons: cost, ... | 12 | 5 | [
{
"comment_id": "8111255",
"author": "Paul",
"timestamp": "2025-03-22T00:43:10",
"content": "If you think this is wild, have a look at how a Model 15 teletype decodes the incoming serial bitstream inrealhardware. That is: Without a single semiconductor.",
"parent_id": null,
"depth": 1,
... | 1,760,371,600.116042 | ||
https://hackaday.com/2025/03/21/turning-a-kombucha-bottle-into-a-plasma-tube/ | Turning A Kombucha Bottle Into A Plasma Tube | Lewin Day | [
"High Voltage"
] | [
"high voltage",
"plasma",
"plasma tube"
] | Kombucha! It’s a delicious fermented beverage that is kind to your digestive system and often sold in glass bottles. You don’t just have to use those bottles for healthy drinks, though. As [Simranjit Singh] demonstrates, you can also use them
to create your very own plasma tube.
[Simranjit’s] build begins with a nice l... | 9 | 3 | [
{
"comment_id": "8111239",
"author": "El Gru",
"timestamp": "2025-03-21T22:17:50",
"content": "So, the beverage is the important part here? Must be Kombucha, but the material of the bottle is irrelevant? Interesting.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_... | 1,760,371,599.889631 | ||
https://hackaday.com/2025/03/21/building-a-handheld-pong-game/ | Building A Handheld Pong Game | Lewin Day | [
"classic hacks",
"Games"
] | [
"3D printed enclosure",
"ESP32",
"handheld",
"pong"
] | Pong was one of the first video games to really enter the public consciousness. While it hasn’t had the staying power of franchises like
Zelda
or
Call of Duty,
it nonetheless still resonates with gamers today. That includes [Arnov Sharma], who put together
this neat handheld version using modern components.
An ESP32 de... | 3 | 3 | [
{
"comment_id": "8111213",
"author": "CJay",
"timestamp": "2025-03-21T20:28:33",
"content": "I dunno, people still building and playing after 53 years seems like it’s definitely got some longevity",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8111238",
"a... | 1,760,371,599.756166 | ||
https://hackaday.com/2025/03/21/high-frequency-food-better-cutting-with-ultrasonics/ | High Frequency Food: Better Cutting With Ultrasonics | Lewin Day | [
"Featured",
"Interest",
"Misc Hacks",
"Slider"
] | [
"cutting",
"food",
"ultrasonic",
"ultrasound"
] | You’re cutting yourself a single slice of cake. You grab a butter knife out of the drawer, hack off a moist wedge, and munch away to your mouth’s delight. The next day, you’re cutting forty slices of cake for the whole office. You grab a large chef’s knife, warm it with hot water, and cube out the sheet cake without ca... | 36 | 17 | [
{
"comment_id": "8111179",
"author": "Ostracus",
"timestamp": "2025-03-21T17:43:28",
"content": "A step up from those vibrating knives used to carve the thanksgiving turkey.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8111189",
"author": "Jeremiah McCar... | 1,760,371,600.2561 | ||
https://hackaday.com/2025/03/21/hackaday-podcast-episode-313-capacitor-plague-wireless-power-and-tiny-everything/ | Hackaday Podcast Episode 313: Capacitor Plague, Wireless Power, And Tiny Everything | Jenny List | [
"Hackaday Columns",
"Podcasts"
] | [
"Hackaday Podcast"
] | We’re firmly in Europe this week on the Hackaday podcast, as Elliot Williams and Jenny List are freshly returned from Berlin and Hackaday Europe. A few days of mingling with the Hackaday community, going through mild panic over badges and SAOs, and enjoying the unique atmosphere of that city.
After discussing the weeke... | 3 | 2 | [
{
"comment_id": "8111211",
"author": "make piece not war",
"timestamp": "2025-03-21T20:03:09",
"content": "Just downloaded 3 copies of the podcast (using AntennaPod), yet only one is playable (the second one). But all of them got the description.",
"parent_id": null,
"depth": 1,
"replies... | 1,760,371,600.317801 | ||
https://hackaday.com/2025/03/21/benchtop-haber-bosch-makes-ammonia-at-home/ | Benchtop Haber-Bosch Makes Ammonia At Home | Dan Maloney | [
"chemistry hacks"
] | [
"ammonia",
"catalyst",
"glassware",
"Haber-Bosch",
"lab",
"sulfuric acid",
"zinc"
] | Humans weren’t the first organisms on this planet to figure out how to turn the abundance of nitrogen in the atmosphere into a chemically useful form; that honor goes to some microbes that learned how to make the most of the primordial soup they called home. But to our credit, once [Messrs. Haber and Bosch] figured out... | 24 | 6 | [
{
"comment_id": "8111138",
"author": "strawberrymortallyb0bcea48e7",
"timestamp": "2025-03-21T15:38:50",
"content": "For how long will this kind of content be legal on Youtube?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8111152",
"author": "macsi... | 1,760,371,600.83516 | ||
https://hackaday.com/2025/03/21/this-week-in-security-the-github-supply-chain-attack-ransomware-decryption-and-paragon/ | This Week In Security: The Github Supply Chain Attack, Ransomware Decryption, And Paragon | Jonathan Bennett | [
"Hackaday Columns",
"News",
"Security Hacks"
] | [
"Github Actions",
"Paragon",
"supply chain attack",
"This Week in Security"
] | Last Friday Github saw
a supply chain attack hidden in a popular Github Action
. To understand this, we have to quickly cover Continuous Integration (CI) and Github Actions. CI essentially means automatic builds of a project. Time to make a release? CI run. A commit was pushed? CI run. For some projects, even pull requ... | 4 | 2 | [
{
"comment_id": "8111095",
"author": "Greg A",
"timestamp": "2025-03-21T14:15:02",
"content": "CI is neat but it has always boggled my mind that people want to do so much of it in the wild instead of cloistered. i wouldn’t want someone else’s CI running on my server and i certainly wouldn’t want my... | 1,760,371,600.773175 | ||
https://hackaday.com/2025/03/21/aluminum-business-cards-make-viable-pcb-stencils/ | Aluminum Business Cards Make Viable PCB Stencils | Lewin Day | [
"PCB Hacks",
"Tool Hacks"
] | [
"aluminium",
"aluminium business card",
"pcb",
"stencil"
] | [Mikey Sklar] had a problem—namely, running low on the brass material typically used for making PCB stencils. Thankfully, a replacement material was not hard to find. It turns out
you can use aluminum business card blanks to make viable PCB stencils.
Why business card blanks? They’re cheap, for a start—maybe 15 cents e... | 25 | 6 | [
{
"comment_id": "8111065",
"author": "jbx",
"timestamp": "2025-03-21T13:08:25",
"content": "Aluminum ?Then :HelumLithumSodumPotassumSilicumGermanumRadumUranumPlutonum…",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8111068",
"author": "Queeg",
... | 1,760,371,600.732976 | ||
https://hackaday.com/2025/03/21/cheap-endoscopic-camera-helps-automate-pressure-advance-calibration/ | Cheap Endoscopic Camera Helps Automate Pressure Advance Calibration | Dan Maloney | [
"3d Printer hacks"
] | [
"calibration",
"endoscope",
"extrusion",
"image analysis",
"klipper",
"machine vision",
"pressure advance"
] | The difference between 3D printing and
good
3D printing comes down to attention to detail. There are so many settings and so many variables, each of which seems to impact the other to a degree that can make setting things up a maddening process. That makes anything that simplifies the process, such as
this computer vis... | 27 | 7 | [
{
"comment_id": "8111053",
"author": "Arjan",
"timestamp": "2025-03-21T12:31:33",
"content": "Pressure advance on an Ender3 with its plastic wheels and cantilever Z-axis is like mounting Brembo disc brakes on the 4 wheels of an old Fiat panda. Cool that it can be done and a very nice proof of concep... | 1,760,371,600.898752 | ||
https://hackaday.com/2025/03/20/a-modern-take-on-the-etch-a-sketch/ | A Modern Take On The Etch A Sketch | Bryan Cockfield | [
"Toy Hacks"
] | [
"etch a sketch",
"IMU",
"intertial measurement",
"led",
"matrix",
"microcontroller",
"tilt-a-sketch"
] | The Etch A Sketch is a classic children’s toy resembling a picture frame where artwork can be made by turning two knobs attached to a stylus inside the frame. The stylus scrapes off an aluminum powder, creating the image which can then be erased by turning the frame upside down and shaking it, adding the powder back to... | 6 | 5 | [
{
"comment_id": "8110995",
"author": "Andrew",
"timestamp": "2025-03-21T05:21:58",
"content": "No thanks. Without the knobs it’s not an Etch-a-Sketch. And using a tilt sensor does not sound great at all. To me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "81... | 1,760,371,600.675014 | ||
https://hackaday.com/2025/03/20/solar-power-logically/ | Solar Power, Logically | Al Williams | [
"Solar Hacks"
] | [
"solar power"
] | We’ve all seen the ads. Some offer “free” solar panels. Others promise nearly free energy if you just purchase a solar — well, solar system doesn’t sound right — maybe… solar energy setup. Many of these plans are dubious at best. You pay for someone to mount solar panels on your house and then pay them for the electric... | 86 | 13 | [
{
"comment_id": "8110979",
"author": "Leonardo",
"timestamp": "2025-03-21T03:45:49",
"content": "Where do you see the free solar panel ads?Never seen any of them.In witch country of the entire world do you see free solar panels? O_o",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,371,601.190842 | ||
https://hackaday.com/2025/03/20/backyard-rope-tow-from-spare-parts/ | Backyard Rope Tow From Spare Parts | Bryan Cockfield | [
"Transportation Hacks"
] | [
"motor",
"rope tow",
"ski",
"ski lift",
"snow",
"snowblower",
"winter"
] | A few years ago, [Jeremy Makes Things] built a rope tow in his back yard so his son could ski after school. Since the lifts at the local hill closed shortly after schools let out, this was the only practical way for his son to get a few laps in during the week. It’s cobbled together from things that [Jeremy] had around... | 9 | 5 | [
{
"comment_id": "8111001",
"author": "PeterC",
"timestamp": "2025-03-21T06:22:18",
"content": "Parents building something for their children make for some of the best projects featured on HaD.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8111036",
"autho... | 1,760,371,600.941904 | ||
https://hackaday.com/2025/03/19/modern-computings-roots-or-the-manchester-baby/ | Modern Computing’s Roots Or The Manchester Baby | Heidi Ulrich | [
"computer hacks",
"History"
] | [
"babbage",
"eniac",
"manchester",
"manchester baby",
"von neumann"
] | In the heart of Manchester, UK, a groundbreaking event took place in 1948: the first modern computer, known as the Manchester Baby, ran its very first program. The Baby’s ability to execute stored programs, developed with guidance from John von Neumann’s theory, marks it as a pioneer in the digital age. This fascinatin... | 15 | 9 | [
{
"comment_id": "8110698",
"author": "David",
"timestamp": "2025-03-19T23:54:37",
"content": "The 1998 rebuild included a world-wide programming contest, with the winner having the privilege of having his code run on the actual replica.The winner won on pure style points: It was a simple count-down... | 1,760,371,601.27815 | ||
https://hackaday.com/2025/03/19/this-m5stack-game-is-surprisingly-addictive/ | This M5Stack Game Is Surprisingly Addictive | Jenny List | [
"Games"
] | [
"accelerometer",
"game",
"M5Stack"
] | For those of us lucky enough to have been at Hackaday Europe in Berlin, there was a feast of hacks at our disposal. Among them was
[Vladimir Divic]’s gradients game
, software for an M5Stack module which was definitely a lot of fun to play. The idea of the game is simple enough, a procedurally generated contour map is ... | 5 | 4 | [
{
"comment_id": "8110654",
"author": "D",
"timestamp": "2025-03-19T20:35:14",
"content": "As for why momentum (and gravity) makes this less trivial: it gives you options of how to get the ball out of a depression. For example you could rock the device back and forth, helping the ball climb a little ... | 1,760,371,601.227539 | ||
https://hackaday.com/2025/03/19/floss-weekly-episode-825-open-source-ci-with-semaphore/ | FLOSS Weekly Episode 825: Open Source CI With Semaphore | Jonathan Bennett | [
"Hackaday Columns",
"Podcasts"
] | [
"ci/cd",
"FLOSS Weekly",
"semaphore"
] | This week,
Jonathan Bennett
and Ben Meadors talk to
Darko Fabijan
about Semaphore, the newly Open Sourced Continuous Integration solution! Why go Open, and how has it gone so far? Watch to find out!
Semaphore Uncut Podcast:
https://semaphore.io/podcast
Discord:
https://discord.gg/FBuUrV24NH
https://www.youtube.com/c/Se... | 0 | 0 | [] | 1,760,371,601.313942 | ||
https://hackaday.com/2025/03/19/from-the-ashes-coal-ash-may-offer-rich-source-of-rare-earth-elements/ | From The Ashes: Coal Ash May Offer Rich Source Of Rare Earth Elements | Dan Maloney | [
"Hackaday Columns",
"News"
] | [
"ash",
"coal",
"rare-earth",
"REEYSc",
"scandium",
"yttrium"
] | For most of history, the world got along fine without the rare earth elements. We knew they existed, we knew they weren’t really all that rare, and we really didn’t have much use for them — until we discovered just how useful they are and made ourselves absolutely dependent on them, to the point where not having them w... | 39 | 11 | [
{
"comment_id": "8110609",
"author": "BobH",
"timestamp": "2025-03-19T17:13:08",
"content": "If there is that much in the ash, I wonder how much is in the unburned coal?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8110629",
"author": "paulvdh\\",
... | 1,760,371,601.386082 | ||
https://hackaday.com/2025/03/19/reviving-a-maplin-4600-diy-synthesizer-from-the-1970s/ | Reviving A Maplin 4600 DIY Synthesizer From The 1970s | Donald Papp | [
"classic hacks",
"Musical Hacks"
] | [
"diy",
"maplin 4600",
"refurbished",
"synth",
"synthesizer",
"vintage"
] | A piece of musical history is the Maplin 4600, a DIY electronic music synthesizer from the 1970s. The design was published in an Australian electronics magazine and sold as a DIY kit, and [LOOK MUM NO COMPUTER] got his hands on
an original Maplin 4600 that he refurbishes and puts through its paces
.
Inserting conductiv... | 16 | 7 | [
{
"comment_id": "8110578",
"author": "alialiali",
"timestamp": "2025-03-19T15:59:49",
"content": "Surely not Maplin as in the ill fated UK hobbist electronics chain?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8110583",
"author": "David H",
... | 1,760,371,601.440939 | ||
https://hackaday.com/2025/03/19/so-what-is-a-supercomputer-anyway/ | So What Is A Supercomputer Anyway? | Maya Posch | [
"computer hacks",
"Featured",
"History",
"Slider"
] | [
"eniac",
"illiac",
"parallel computing",
"supercomputer"
] | Over the decades there have been many denominations coined to classify computer systems, usually when they got used in different fields or technological improvements caused significant shifts. While the very first electronic computers were very limited and often not programmable, they would soon morph into something th... | 33 | 14 | [
{
"comment_id": "8110574",
"author": "Antron Argaiv",
"timestamp": "2025-03-19T15:53:12",
"content": "I heard Lily Tomlin’s voice as Ernestine when I saw that first photo. “A gracious good morning…”",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8110581",
... | 1,760,371,601.57822 | ||
https://hackaday.com/2025/03/19/make-fancy-resin-printer-3d-models-fdm-friendly/ | Make Fancy Resin Printer 3D Models FDM-Friendly | Donald Papp | [
"3d Printer hacks",
"Software Hacks"
] | [
"3d model",
"3d printing",
"blender",
"FDM",
"resin",
"thick supports"
] | Do you like high-detail 3D models intended for resin printing, but wish you could more easily print them on a filament-based FDM printer? Good news, because
[Jacob] of
Painted4Combat
shared a tool he created
to make 3D models meant for resin printers — the kind popular with tabletop gamers — easier to port to FDM. It c... | 17 | 6 | [
{
"comment_id": "8110525",
"author": "RunnerPack",
"timestamp": "2025-03-19T13:27:53",
"content": "If you can split the supports and the model, why not just delete the supports entirely and let the (FDM) slicer put them where it deems best?",
"parent_id": null,
"depth": 1,
"replies": [
... | 1,760,371,601.740613 | ||
https://hackaday.com/2025/03/20/laser-harp-sets-the-tone/ | Laser Harp Sets The Tone | Bryan Cockfield | [
"Laser Hacks"
] | [
"arduino",
"high power",
"laser",
"laser harp",
"microcontroller",
"midi",
"music",
"persistence of vision"
] | In many ways, living here in the future is quite exiting. We have access to the world’s information instantaneously and can get plenty of exciting tools and hardware delivered to our homes in ways that people in the past with only a Sears catalog could only dream of. Lasers are of course among the exciting hardware ava... | 16 | 10 | [
{
"comment_id": "8110942",
"author": "lightislight",
"timestamp": "2025-03-20T21:09:00",
"content": "I am surprised they still have their eye sight… 3W laser aimed directly towards their face and they are looking for the beam with their hands. One wrist watch reflection or sprinkler on the ceiling a... | 1,760,371,601.685677 | ||
https://hackaday.com/2025/03/20/three-spi-busses-are-one-too-many-on-this-cheap-yellow-display/ | Three SPI Busses Are One Too Many On This Cheap Yellow Display | Jenny List | [
"Microcontrollers"
] | [
"Cheap Yellow Display",
"ESP32",
"spi"
] | The Cheap Yellow Display may not be the fastest of ESP32 boards with its older model chip and 4 MB of memory, but its low price and useful array of on-board peripherals has made it something of a hit in our community. Getting the most out of the hardware still presents some pitfalls though, as [Mark Stevens] found out ... | 25 | 10 | [
{
"comment_id": "8110880",
"author": "Ben",
"timestamp": "2025-03-20T15:48:53",
"content": "Awful. What is the benefit over a software solution?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8111302",
"author": "Dia Rear",
"timestamp": "2025... | 1,760,371,601.639506 | ||
https://hackaday.com/2025/03/20/linux-fu-a-warp-speed-prompt/ | Linux Fu: A Warp Speed Prompt | Al Williams | [
"Hackaday Columns",
"Linux Hacks"
] | [
"bash",
"linux",
"prompt",
"zsh"
] | If you spend a lot of time at the command line, you probably have either a very basic prompt or a complex, information-dense prompt. If you are in the former camp, or you just want to improve your shell prompt, have a look at
Starship
. It works on the most common shells on most operating systems, so you can use it eve... | 27 | 8 | [
{
"comment_id": "8110839",
"author": "steelman",
"timestamp": "2025-03-20T14:10:22",
"content": "<blockquote>curl -sShttps://starship.rs/install.sh| sh<blockquote>Never, ever do this. No.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8110853",
"auth... | 1,760,371,602.065956 | ||
https://hackaday.com/2025/03/20/chemistry-meets-mechatronics-in-this-engaging-art-piece/ | Chemistry Meets Mechatronics In This Engaging Art Piece | Dan Maloney | [
"Art"
] | [
"anthocyanin",
"cabbage",
"electrooxidation",
"electroreduction",
"gantry",
"peristaltic",
"pigment"
] | There’s a classic grade school science experiment that involves extracting juice from red cabbage leaves and using it as a pH indicator. It relies on anthocyanins, pigmented compounds that give the cabbage its vibrant color but can change depending on the acidity of the environment they’re in, from pink in acidic condi... | 6 | 5 | [
{
"comment_id": "8110868",
"author": "Code",
"timestamp": "2025-03-20T15:33:52",
"content": "Someone should make a clock out of that*I should make a clock out of that*I already have too many projects*Someone should make a clock out of that",
"parent_id": null,
"depth": 1,
"replies": []
... | 1,760,371,601.933605 | ||
https://hackaday.com/2025/03/20/pieeg-kit-is-a-self-contained-biosignal-laboratory/ | PiEEG Kit Is A Self-Contained Biosignal Laboratory | Tom Nardi | [
"Raspberry Pi"
] | [
"biosignals",
"eeg",
"electroencephalogram",
"PiEEG"
] | Back in 2023, we first brought you word of the PiEEG: a low-cost Raspberry Pi based device designed for detecting and analyzing electroencephalogram (EEG) and other biosignals for the purposes of experimenting with brain-computer interfaces. Developed by [Ildar Rakhmatulin], the hardware has gone through several revisi... | 9 | 5 | [
{
"comment_id": "8110784",
"author": "Nk",
"timestamp": "2025-03-20T09:28:43",
"content": "Can you use this to make a BCI?Are there libraries or software to do that?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8110832",
"author": "Ron",
"t... | 1,760,371,602.123944 | ||
https://hackaday.com/2025/03/19/worlds-smallest-blinky-now-even-smaller/ | World’s Smallest Blinky, Now Even Smaller | Dan Maloney | [
"Microcontrollers"
] | [
"ATtiny20",
"blinky",
"led",
"microcontroller",
"microsoldering",
"tantalum"
] | Here at Hackaday, it’s a pretty safe bet that putting “World’s smallest” in the title of an article will instantly attract comments claiming that someone else built a far smaller version of the same thing. But that’s OK, because if there’s something smaller than
this nearly microscopic LED blinky build
, we definitely ... | 29 | 12 | [
{
"comment_id": "8110749",
"author": "macsimski",
"timestamp": "2025-03-20T06:56:28",
"content": "nothing to sneeze at.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8110757",
"author": "udif",
"timestamp": "2025-03-20T08:01:24",
"co... | 1,760,371,602.001362 | ||
https://hackaday.com/2025/03/19/pick-up-a-pebble-again/ | Pick Up A Pebble Again | Jenny List | [
"Wearable Hacks"
] | [
"pebble",
"smartwatch",
"wearable"
] | A decade ago, smartwatches were an unexplored avenue full of exotic promise. There were bleeding-edge and eye-wateringly expensive platforms from the likes of Samsung or Apple, but for the more experimental among technophiles there was the Pebble. Based on a microcontroller and with a relatively low-resolution display,... | 38 | 16 | [
{
"comment_id": "8110728",
"author": "alt",
"timestamp": "2025-03-20T04:13:48",
"content": "maybe its just me but it doesnt seem that expensive considering how much most “smartwatches” cost and can’t even last more than a day or two without needing to be charged",
"parent_id": null,
"depth":... | 1,760,371,602.290058 | ||
https://hackaday.com/2025/03/19/glasses-that-transcribe-text-to-audio/ | “Glasses” That Transcribe Text To Audio | Lewin Day | [
"Raspberry Pi",
"Wearable Hacks"
] | [
"glasses",
"optical character recognition",
"speech synthesis",
"text to speech"
] | Glasses for the blind might sound like an odd idea, given the traditional purpose of glasses and the issue of vision impairment. However, eighth-grade student [Akhil Nagori] built these glasses with an alternate purpose in mind. They’re not really for seeing. Instead,
they’re outfitted with hardware to capture text and... | 11 | 9 | [
{
"comment_id": "8110455",
"author": "shinsukke",
"timestamp": "2025-03-19T08:39:33",
"content": "Very cool project, and by an eighth grader no less!I am really out of touch with machine vision libraries etc. In my mind, they are still hard to use and out of reach, and OCR is unobtainable by an indi... | 1,760,371,602.336925 | ||
https://hackaday.com/2025/03/18/spy-tech-build-your-own-laser-eavesdropper/ | Spy Tech: Build Your Own Laser Eavesdropper | Heidi Ulrich | [
"Laser Hacks",
"Security Hacks"
] | [
"laser",
"microphone",
"noise",
"sensor",
"spy",
"spy tech",
"surveillance"
] | Laser microphones have been around since the Cold War. Back in those days, they were a favorite tool of the KGB – allowing spies to listen in on what was being said in a room from a safe distance.
This project by [SomethingAbtScience]
resurrects that concept with a DIY build that any hacker worth their soldering iron c... | 35 | 11 | [
{
"comment_id": "8110441",
"author": "Hugh",
"timestamp": "2025-03-19T08:02:01",
"content": "Interresting hackThe background noise looks like white noise or so.It could be coming from the sensor itself or from the preamplifier.According to the documents, it appears that the Russians used the infrare... | 1,760,371,602.408559 | ||
https://hackaday.com/2025/03/18/speeding-up-your-projects-with-direct-memory-access/ | Speeding Up Your Projects With Direct Memory Access | Lewin Day | [
"Microcontrollers"
] | [
"code",
"Direct Memory Access",
"dma",
"embedded"
] | Here’s the thing about coding. When you’re working on embedded projects, it’s quite easy to run into hardware limitations, and quite suddenly, too. You find yourself desperately trying to find a way to speed things up, only… there are no clock cycles to spare. It’s at this point that you might reach for the magic of di... | 37 | 9 | [
{
"comment_id": "8110370",
"author": "David H",
"timestamp": "2025-03-19T02:06:28",
"content": "Ex-Amiga coder here. DMA, you say? That brings back some memories. Can we talk about the copper and the blitter, too? As you allude, the words “DMA” and “security” don’t co-exist entirely happily, but the... | 1,760,371,602.608233 | ||
https://hackaday.com/2025/03/18/ultra-low-power-soil-moisture-sensor/ | Ultra-Low Power Soil Moisture Sensor | Bryan Cockfield | [
"green hacks"
] | [
"capacitance",
"capacitive",
"houseplant",
"moisture",
"plant",
"sensor",
"soil",
"stm32",
"water"
] | Electricity can be a pretty handy tool when it stays within the bounds of its wiring. It’s largely responsible for our modern world and its applications are endless. When it’s not running in wires or electronics though, things can get much more complicated even for things that seem simple on the surface. For example, m... | 13 | 6 | [
{
"comment_id": "8110332",
"author": "shinsukke",
"timestamp": "2025-03-18T23:28:50",
"content": "Ynvisible displays are more similar to segment LCDs, than e-ink/epaper displays. Driving them is similar, you generate a voltage across them and the segments change their contrast. Ynvisible segments ne... | 1,760,371,602.530036 | ||
https://hackaday.com/2025/03/18/a-foot-pedal-to-supplement-your-keyboard/ | A Foot Pedal To Supplement Your Keyboard | Lewin Day | [
"Peripherals Hacks"
] | [
"ctrl",
"foot pedal",
"foot pedals",
"keyboard"
] | It’s 2025, and you’re still probably pressing modifier keys on your keyboard like a… regular person. But it doesn’t have to be this way! You could use foot pedals instead,
as [Jan Herman] demonstrates.
Now, if you’re a diehard embedded engineer, you might be contemplating your favorite USB HID interface chip and how be... | 24 | 15 | [
{
"comment_id": "8110283",
"author": "shinsukke",
"timestamp": "2025-03-18T20:10:24",
"content": "Ahh good old custom HID devices…Back in the day I used to play an obscure videogame called “TES 3 : Morrowind”. It had a cool exploit (not really though) where I could level up my character’s “conjurati... | 1,760,371,602.475443 | ||
https://hackaday.com/2025/03/18/the-capacitor-plague-of-the-early-2000s/ | The Capacitor Plague Of The Early 2000s | Maya Posch | [
"History"
] | [
"capacitor plague",
"electrolytic capacitor"
] | Somewhere between the period of 1999 and 2007 a plague swept through the world, devastating lives and businesses. Identified by a scourge of electrolytic capacitors violently exploding or splurging their liquid electrolyte guts all over the PCB, it led to a lot of finger pointing and accusations of stolen electrolyte f... | 54 | 15 | [
{
"comment_id": "8110271",
"author": "prosper",
"timestamp": "2025-03-18T19:37:33",
"content": "“More likely it coincided with the introduction of low-ESR electrolytic capacitors,”y’know, that really rings true. Most of the culprits I’ve seen WERE the low-ESR types. Most of the other caps on a board... | 1,760,371,602.899112 | ||
https://hackaday.com/2025/03/18/keebin-with-kristina-the-one-with-the-cheesy-keyboard/ | Keebin’ With Kristina: The One With The Cheesy Keyboard | Kristina Panos | [
"Hackaday Columns",
"Peripherals Hacks"
] | [
"90's",
"alice",
"apiaster keyboard",
"bayleaf keyboard",
"cheese board keyboard",
"draw 4 wild",
"Fox typewriter",
"GMK Panels",
"keyboards for mice",
"trackball",
"uno"
] | Let’s just kick things off in style with
the fabulously brutalist Bayleaf wireless split
from [StunningBreadfruit30], shall we? Be sure to
check out the wonderful build log/information site
as well for the full details.
Image by [StunningBreadfruit30] via
reddit
Here’s the gist: this sexy split grid of beautiful multi-... | 4 | 3 | [
{
"comment_id": "8110247",
"author": "MrSVCD",
"timestamp": "2025-03-18T18:21:02",
"content": "I really love the 90:s keyboard. The colours speak to me.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8110322",
"author": "Jim J Jewett",
"timestamp": "20... | 1,760,371,602.661709 | ||
https://hackaday.com/2025/03/18/simulating-embedded-development-to-reduce-iteration-time/ | Simulating Embedded Development To Reduce Iteration Time | Lewin Day | [
"Software Development"
] | [
"ESP32",
"programming",
"simulator"
] | There’s something that kills coding speed—iteration time. If you can smash a function key and run your code, then watch it break, tweak, and smash it again—you’re working fast. But if you have to first compile your code, then plug your hardware in, burn it to the board, and so on… you’re wasting a lot of time. It’s tha... | 22 | 11 | [
{
"comment_id": "8110209",
"author": "CH",
"timestamp": "2025-03-18T16:28:24",
"content": "Just a few layers of emulation occurring here….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8110210",
"author": "Duncan Thomas",
"timestamp": "2025-03-18T16:3... | 1,760,371,602.802356 | ||
https://hackaday.com/2025/03/18/checking-in-on-the-isa-wars-and-its-impact-on-cpu-architectures/ | Checking In On The ISA Wars And Its Impact On CPU Architectures | Maya Posch | [
"ARM",
"Current Events",
"hardware",
"Interest",
"Microcontrollers"
] | [
"CPU ISA",
"instruction set architecture",
"mips",
"RISC-V",
"x86_64"
] | An Instruction Set Architecture (ISA) defines the software interface through which for example a central processor unit (CPU) is controlled. Unlike early computer systems which didn’t define a standard ISA as such, over time the compatibility and portability benefits of having a standard ISA became obvious. But of cour... | 33 | 8 | [
{
"comment_id": "8110146",
"author": "ramzi",
"timestamp": "2025-03-18T14:11:38",
"content": "CPUs performance hit a wall around 2003. Since then, rather than addressing the problem it’s been working around it by adding more cores, more cache, more speculation (and providing unfixable backdoors to d... | 1,760,371,602.747188 | ||
https://hackaday.com/2025/03/18/writing-a-gps-receiver-from-scratch/ | Writing A GPS Receiver From Scratch | Bryan Cockfield | [
"gps hacks",
"Radio Hacks"
] | [
"gps",
"python",
"radio",
"receiver",
"RTL-SDR",
"sdr",
"software-defined radio"
] | GPS is an incredible piece of modern technology. Not only does it allow for locating objects precisely anywhere on the planet, but it also enables the turn-by-turn directions we take for granted these days — all without needing anything more than a radio receiver and some software to decode the signals constantly being... | 22 | 4 | [
{
"comment_id": "8110108",
"author": "vince",
"timestamp": "2025-03-18T12:00:19",
"content": "it was my very first experience with a bluetooth gps receiver, the special pcmcia bluetooth receiver for my laptop costs a fortune and was also one of the firsts. it could display a coordinate, wich you co... | 1,760,371,602.960674 | ||
https://hackaday.com/2025/03/18/diy-your-own-red-light-therapy-gear/ | DIY Your Own Red Light Therapy Gear | Lewin Day | [
"LED Hacks"
] | [
"led",
"red light therapy",
"skin",
"skincare"
] | There are all kinds of expensive beauty treatments on the market — various creams, zappy lasers, and fine mists of heavily-refined chemicals. For [Ruth Amos], a $78,000 LED bed had caught her eye, and she wondered if she could
recreate the same functionality on the cheap.
The concept behind [Ruth]’s build is simple eno... | 104 | 14 | [
{
"comment_id": "8110040",
"author": "Weasel",
"timestamp": "2025-03-18T08:08:27",
"content": "Well, looks like the times of ripping off esoteric people are gone. Now its the time to build some weird stuff and call it “beauty therapy”.Mark my words.Not long and someone will build a suit filled with ... | 1,760,371,603.361637 | ||
https://hackaday.com/2025/03/17/simple-robot-assembled-from-e-waste-actually-looks-pretty-cool/ | Simple Robot Assembled From E-Waste Actually Looks Pretty Cool | Lewin Day | [
"Robots Hacks"
] | [
"ESP32-CAM",
"led bulb",
"robot"
] | If you’re designing a robot for a specific purpose, you’re probably ordering fresh parts and going with a clean sheet design. If you’re just building for fun though, you can just go with whatever parts you have on hand. That’s how [Sorush Moradisani] approached building Esghati—
a “robot made from garbage.”
Remote view... | 9 | 7 | [
{
"comment_id": "8110015",
"author": "anon810",
"timestamp": "2025-03-18T05:10:28",
"content": "No son, we have wall-e at home.Wall-e at home:",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8110215",
"author": "David H",
"timestamp": "2025-03... | 1,760,371,603.13743 | ||
https://hackaday.com/2025/03/17/current-mirrors-tame-common-mode-noise/ | Current Mirrors Tame Common Mode Noise | Heidi Ulrich | [
"hardware",
"Misc Hacks",
"News",
"Science"
] | [
"diffamp",
"differential amplifier",
"long tailed pair",
"mirror",
"noise",
"oscilloscope",
"tail resistor",
"transistor"
] | If you’re the sort who finds beauty in symmetry – and I’m not talking about your latest PCB layout – then you’ll appreciate this clever take on the long-tailed pair.
[Kevin]’s video on this topic
explores boosting common mode rejection by swapping out the old-school tail resistor for a current mirror. Yes,
the humble c... | 12 | 5 | [
{
"comment_id": "8110002",
"author": "Paul",
"timestamp": "2025-03-18T04:18:02",
"content": "from a decent 35 dB to a noise-crushing 93 dB“more than doubles” indeed.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8110045",
"author": "ono",
"t... | 1,760,371,603.071104 | ||
https://hackaday.com/2025/03/17/turning-down-the-noise-on-smps/ | Turning Down The Noise On SMPS | Bryan Cockfield | [
"Tech Hacks"
] | [
"capacitance",
"diode",
"electronics",
"noise",
"power supply",
"smps",
"switch mode power supply",
"transistor"
] | On paper, electricity behaves in easy-to-understand, predictable ways. That’s mostly because the wires on the page have zero resistance and the switching times are actually zero, whereas in real life neither of these things are true. That’s what makes things like switch-mode power supplies (SMPS) difficult to build and... | 13 | 5 | [
{
"comment_id": "8109954",
"author": "jenningsthecat",
"timestamp": "2025-03-18T00:36:25",
"content": "When the subject at hand is noise, it strikes me as fortunate that the switching times AREN’T “actually zero”. The faster the edge, the higher the harmonic content. Sure, fast switches are more eff... | 1,760,371,603.409543 | ||
https://hackaday.com/2025/03/17/recreating-a-braun-classic-with-3d-printing/ | Recreating A Braun Classic With 3D Printing | Lewin Day | [
"home hacks"
] | [
"Braun",
"desk fan",
"fan"
] | Braun was once a mighty pillar of industrial design; a true titan of the mid-century era. Many of the company’s finest works have been forgotten outside of coffee table books and vintage shops.
[Distracted by Design] wanted to bring one of the classics back to life—
the Braun HL70 desk fan.
The original was quite a nea... | 15 | 8 | [
{
"comment_id": "8109922",
"author": "macsimski",
"timestamp": "2025-03-17T21:56:32",
"content": "jep Dieter rahm really set a standard with brAun. i also really dig his portable radios. very simple and clean. Apple is trying to emulate this in mac os, but gloriously misses the point completely on u... | 1,760,371,603.940717 | ||
https://hackaday.com/2025/03/17/repairing-a-legendary-elka-synthex-analog-synthesizer/ | Repairing A Legendary Elka Synthex Analog Synthesizer | Maya Posch | [
"Musical Hacks",
"Repair Hacks"
] | [
"analog synthesizer"
] | Handy diagnostic LEDs on the side of the tone generator boards. (Credit: Mend it Mark, YouTube)
Somehow, an Elka Synthex analog synthesizer
made it onto [Mend it Mark]’s repair bench recently.
It had a couple of dud buttons, and some keys produced the wrong tone. Remember, this is an analog synthesizer from the 1980s, ... | 16 | 5 | [
{
"comment_id": "8109861",
"author": "macsimski",
"timestamp": "2025-03-17T18:33:16",
"content": "Ah. you saw that video on youtube too.Now im curious how big the venn diagram overlap is between people reading hackaday and people getting this video as a suggestion in their feed.",
"parent_id": n... | 1,760,371,603.460006 | ||
https://hackaday.com/2025/03/17/ask-hackaday-what-would-you-do-with-the-worlds-smallest-microcontroller/ | Ask Hackaday: What Would You Do With The World’s Smallest Microcontroller? | Dan Maloney | [
"Ask Hackaday",
"Hackaday Columns",
"Microcontrollers"
] | [
"arm",
"Ask Hackaday",
"bga",
"cortex",
"MCU",
"microcontroller",
"texas instruments"
] | It’s generally pretty easy to spot a microcontroller on a PCB. There are clues aplenty: the more-or-less central location, the nearby crystal oscillator, the maze of supporting passives, and perhaps even an obvious flash chip lurking about. The dead giveaway, though, is all those traces leading to the chip, betraying i... | 94 | 47 | [
{
"comment_id": "8109813",
"author": "Rick",
"timestamp": "2025-03-17T17:12:59",
"content": "What Would You Do With The World’s Smallest Microcontroller?Is it markedNot for rectal use? If not, I have an idea 😛",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "... | 1,760,371,603.582965 | ||
https://hackaday.com/2025/03/17/build-your-own-air-mouse-okay/ | Build Your Own Air Mouse, Okay? | Lewin Day | [
"Peripherals Hacks"
] | [
"air mouse",
"hid",
"hid device",
"mouse"
] | Are you using a desk mouse like some kind of… normal computer user? Why, beg the heavens? For you could be using an
air mouse
, of your very own creation!
[Misfit Maker] shows the way.
Check out what he made in the video below.
An air mouse is a mouse you use in the air—which creates at least one major challenge. Since... | 7 | 4 | [
{
"comment_id": "8109803",
"author": "Paul",
"timestamp": "2025-03-17T16:48:39",
"content": "Cool. Reminiscent of the Gyration Air Mouse from the turn of the century. I’m sure the new IMU is an improvement over the gyroscopes used in that one — they drifted like crazy.",
"parent_id": null,
... | 1,760,371,603.622123 | ||
https://hackaday.com/2025/03/17/relativity-space-changes-course-on-path-to-orbit/ | Relativity Space Changes Course On Path To Orbit | Tom Nardi | [
"Current Events",
"Featured",
"Slider",
"Space"
] | [
"Additive Manufacturing",
"commercial space",
"relativity space"
] | In 2015, Tim Ellis and Jordan Noone founded Relativity Space around an ambitious goal: to be the first company to put a 3D printed rocket into orbit. While additive manufacturing was already becoming an increasingly important tool in the aerospace industry, the duo believed it could be pushed further than anyone had ye... | 25 | 9 | [
{
"comment_id": "8109782",
"author": "Jan",
"timestamp": "2025-03-17T15:20:18",
"content": "regarding the huger 3D printer… I know it doesn’t work that way, but in my mind I see: a production worker walking in early in the morning seeing a misprint looking like a really huge pile of spaghetti-like m... | 1,760,371,605.851557 | ||
https://hackaday.com/2025/03/17/3d-printed-brick-layers-for-everyone/ | 3D Printed Brick Layers For Everyone | Al Williams | [
"3d Printer hacks",
"Software Hacks"
] | [
"3d printing",
"brick layers",
"slicer"
] | Some slicers have introduced brick layers, and more slicers plan to add them. Until that happens, you can use
this new script from [Geek Detour]
to get brick layer goodness on Prusa, Orca, and Bambu slicers. Check out the video below for more details.
The idea behind brick layers is that outer walls can be stronger if ... | 18 | 4 | [
{
"comment_id": "8109704",
"author": "strawberrymortallyb0bcea48e7",
"timestamp": "2025-03-17T11:34:39",
"content": "Open source can ignore patents, if you don’t resell it.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8109709",
"author": "Harvie.CZ... | 1,760,371,606.284993 | ||
https://hackaday.com/2025/03/17/a-6502-in-the-shell/ | A 6502, In The Shell | Jenny List | [
"Linux Hacks",
"Microcontrollers",
"Software Hacks"
] | [
"6502",
"shell",
"shell script"
] | Shell scripting is an often forgotten programming environment, relegated to simple automation tasks and little else. In fact, it’s possible to achieve much more complex tasks in the shell. As an example, here’s [calebccf] with an emulated 6502 system in a
busybox ash shell script
.
What’s in the emulator? A simple 6502... | 8 | 3 | [
{
"comment_id": "8109660",
"author": "Rock Erickson",
"timestamp": "2025-03-17T09:49:24",
"content": "Shell scripting is an often forgotten programming environment, relegated to simple automation tasks and little else.I can fell a tree using 7lbs sledgehammer or e-tool, but it doesn’t mean they are ... | 1,760,371,605.904789 | ||
https://hackaday.com/2025/03/16/the-amiga-no-one-wanted/ | The Amiga No One Wanted | Al Williams | [
"Retrocomputing"
] | [
"amiga",
"doom"
] | The Amiga has a lot of fans, and rightly so. The machine broke a lot of ground. However, according to [Dave Farquhar], one of the most popular models today —
the Amiga 600
— was reviled in 1992 by just about everyone. One of the last Amigas, it was supposed to be a low-cost home computer but was really just a repackage... | 60 | 20 | [
{
"comment_id": "8109624",
"author": "Joshua",
"timestamp": "2025-03-17T05:29:19",
"content": "Wasn’t the A600/A1200 the stupid idea of Commodore USA?Here in Germany, by early 90s, users rather wanted more A500s and some new A2000s insteads.But no one was listening for some reason, and instead those... | 1,760,371,606.125441 | ||
https://hackaday.com/2025/03/16/wire-recording-speaks-again/ | Wire Recording Speaks Again | Al Williams | [
"Teardown"
] | [
"Mr Carlson",
"wire recorder"
] | If you think of old recording technology, you probably think of magnetic tape, either in some kind of cassette or, maybe, on reels. But there’s an even older technology that recorded voice on hair-thin stainless steel wire and [Mr. Carlson] happened upon a recorded reel of wire. Can he extract the audio from it?
Of cou... | 14 | 9 | [
{
"comment_id": "8109620",
"author": "Eric",
"timestamp": "2025-03-17T02:47:18",
"content": "Hogan’s Heroes TV series featured custom build wire recorder/player that POW used. This is the only reason I knew of it. The one used in the show is fake and audio is added to the film during editing.",
... | 1,760,371,605.734199 | ||
https://hackaday.com/2025/03/16/hackaday-links-march-16-2025/ | Hackaday Links: March 16, 2025 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links",
"Slider"
] | [
"brick",
"container",
"conviction",
"crime",
"cursor",
"engine room",
"firmware",
"hackaday links",
"HP",
"learn to code",
"LLM",
"logic bomb",
"printer",
"ship",
"toner"
] | “The brickings will continue until the printer sales improve!” This whole printer-bricking thing seems to be getting out of hand with the news this week that
a firmware update caused certain HP printers to go into permanent paper-saver mode
. The update was sent to LaserJet MFP M232-M237 models (opens printer menu; che... | 5 | 5 | [
{
"comment_id": "8109594",
"author": "PWalsh",
"timestamp": "2025-03-16T23:53:18",
"content": "Damn! Like walking through the Krell machine…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8109673",
"author": "CJay",
"timestamp": "2025-03-17T10:13:01",
... | 1,760,371,605.684195 | ||
https://hackaday.com/2025/03/16/blue-ghost-watches-lunar-eclipse-from-the-lunar-surface/ | Blue Ghost Watches Lunar Eclipse From The Lunar Surface | Maya Posch | [
"Space"
] | [
"firefly",
"Moon landing",
"solar eclipse"
] | Firefly’s Blue Ghost lander’s first look at the solar eclipse as it began to emerge from its Mare Crisium landing site on March 14 at 5:30 AM UTC. (Credit: Firefly Aerospace)
After recently landing at the Moon’s Mare Crisium, Firefly’s Blue Ghost lunar lander craft was treated to a spectacle that’s rarely observed: a t... | 20 | 6 | [
{
"comment_id": "8109558",
"author": "TG",
"timestamp": "2025-03-16T20:44:31",
"content": "Like seeing the sunset and sunrise from every point on the terminator simultaneously",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8109559",
"author": "Hirudinea",
... | 1,760,371,605.583482 | ||
https://hackaday.com/2025/03/16/inside-a-budget-current-probe/ | Inside A “Budget” Current Probe | Al Williams | [
"Reviews",
"Teardown"
] | [
"current probe",
"owon",
"test equipment"
] | Current measurements are not as handy as voltage measurements. You typically need to either measure the voltage across something and do some math or break the circuit so a known resistor in your instrument develops a voltage your meter measures and converts for you. However, it is possible to get non-contact current pr... | 10 | 3 | [
{
"comment_id": "8109550",
"author": "Ostracus",
"timestamp": "2025-03-16T19:02:26",
"content": "Well, if one ditches the oscilloscope current probes can be gotten pretty cheap.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8109574",
"author": "Hans Hille... | 1,760,371,605.779848 | ||
https://hackaday.com/2025/03/16/transmitting-wireless-power-over-longer-distances/ | Transmitting Wireless Power Over Longer Distances | Maya Posch | [
"Science"
] | [
"inductive coupling",
"wireless power transfer"
] | Proof-of-concept of the inductive coupling transmitter with the 12V version of the circuitry (Credit: Hyperspace Pirate, YouTube)
Everyone loves wireless power these days, almost vindicating [Nikola Tesla’s] push for wireless power. One reason why transmitting electricity this way is a terrible idea is the massive loss... | 25 | 11 | [
{
"comment_id": "8109516",
"author": "Paul",
"timestamp": "2025-03-16T14:48:01",
"content": "Yeah, that dipole-dipole inverse-cubelaw really bites here.Large phased array transmitters (antennas multiple wavelengths in size) and target tracking (like Energous and Ossia do) can help push that closer t... | 1,760,371,605.516698 | ||
https://hackaday.com/2025/03/16/a-look-at-the-panasonic-fs-a1fm/ | A Look At The Panasonic FS-A1FM | Al Williams | [
"Retrocomputing"
] | [
"msx",
"panasonic",
"retrocomputing"
] | MSX computers were not very common in the United States, and we didn’t know what we were missing when they were popular. [Re:Enthused] shows us what would have been a fine machine in its day: a
Panasonic FS-A1FM
. Have a look at the video below to see the like-new machine.
The machine isn’t just an ordinary MSX compute... | 12 | 6 | [
{
"comment_id": "8109499",
"author": "Gareth",
"timestamp": "2025-03-16T12:47:18",
"content": "I have a fully functional A1 (it looked pretty) but couldn’t really get on with. A lost “could have been”.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8109510",... | 1,760,371,605.633893 | ||
https://hackaday.com/2025/03/16/a-hackers-approach-to-all-things-antenna/ | A Hacker’s Approach To All Things Antenna | Heidi Ulrich | [
"Radio Hacks"
] | [
"antenna",
"omnidirectional",
"RF",
"signal",
"tuning",
"wavelength"
] | When your homebrew Yagi antenna only sort-of works, or when your WiFi
can
tenna seems moody on rainy days, we can assure you: it is not only you. You can stop doubting yourself once and for all after you’ve watched the
Tech 101: Antennas webinar by [Dr. Jonathan Chisum]
.
[Jonathan] breaks it all down in a way that mak... | 13 | 3 | [
{
"comment_id": "8109456",
"author": "JesterNoFool",
"timestamp": "2025-03-16T08:24:11",
"content": "It’s due to antennas & propagation (primarily) that we say, “All RF is FM (fantastic magic).”",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8109508",
... | 1,760,371,606.17835 | ||
https://hackaday.com/2025/03/15/repairing-a-kodak-picture-maker-kiosk/ | Repairing A Kodak Picture Maker Kiosk | Al Williams | [
"digital cameras hacks"
] | [
"kiosk",
"kodak"
] | Photo-printing kiosks are about as common as payphones these days. However, there was a time when they were everywhere. The idea was that if you didn’t have a good printer at home, you could take your digital files to a kiosk, pay your money, and run off some high-quality images.
[Snappiness] snagged one
, and if you’v... | 9 | 6 | [
{
"comment_id": "8109454",
"author": "Oliver",
"timestamp": "2025-03-16T08:05:49",
"content": "Sadly he doesnt really do anything interessting for this crowd. No screws removed, no ddeice opened, no repait. Just swapping a broken monitor.Oh he does 3d print a spring for the scanner.Still curious th... | 1,760,371,606.228852 | ||
https://hackaday.com/2025/03/15/building-a-fully-automatic-birkeland-eyde-reactor/ | Building A Fully Automatic Birkeland-Eyde Reactor | Maya Posch | [
"Science"
] | [
"birkeland-eyde",
"nitrogen fixation"
] | Ever wanted to produce nitrogen fertilizer like they did in the 1900s? In that case, you’re probably looking at the Birkeland-Eyde process, which was the first industrial-scale atmospheric nitrogen fixation process. It was eventually replaced by the Haber-Bosch and Ostwald processes. [Markus Bindhammer] covers the cons... | 7 | 4 | [
{
"comment_id": "8109446",
"author": "Drew",
"timestamp": "2025-03-16T05:56:25",
"content": "I have been thinking about making one of these, but I was going to use an oxygen concentrator (molecular sieve) to introduce pure oxygen right at the spark that had an atmosphere of almost pure nitrogen, in ... | 1,760,371,606.704162 | ||
https://hackaday.com/2025/03/15/add-webusb-support-to-firefox-with-a-special-usb-device/ | Add WebUSB Support To Firefox With A Special USB Device | Maya Posch | [
"computer hacks",
"Security Hacks"
] | [
"firefox",
"U2F",
"WebUSB"
] | RP2040-based Pico board acting as U2F dongle with Firefox. (Credit: ArcaneNibble, GitHub)
The WebUSB standard is certainly controversial. Many consider it a security risk, and, to date, only Chromium-based browsers support it. But there is a workaround that is, ironically, supposed to increase security. The adjacent U... | 7 | 6 | [
{
"comment_id": "8109406",
"author": "Cad the Mad",
"timestamp": "2025-03-15T23:18:41",
"content": "That’s very cool. It is always exciting to see ways of having a web page interact with local hardware without the hardware being on the Internet.",
"parent_id": null,
"depth": 1,
"replies"... | 1,760,371,606.66032 | ||
https://hackaday.com/2025/03/15/you-too-can-do-the-franck-hertz-experiment/ | You Too Can Do The Franck-Hertz Experiment | Al Williams | [
"Science"
] | [
"franck-Hertz",
"quantum",
"tube"
] | We talk about quantum states — that is, something can be at one of several discrete values but not in between. For example, a binary digit can be a 1 or a 0, but not 0.3 or 0.5. Atoms have quantum states, but how do we know that? That’s what the Franck-Hertz experiment demonstrates, and [stoppi] shows you how to
replic... | 5 | 3 | [
{
"comment_id": "8109410",
"author": "Paul",
"timestamp": "2025-03-15T23:38:27",
"content": "So, the original experiment used mercury vapour to fill the tube, andthatis the gas that is analyzed. This version seems to depend on the xenon that’s present in this particular type of tube (a thyratron).I... | 1,760,371,606.608156 | ||
https://hackaday.com/2025/03/15/putting-conductive-tpu-to-the-test/ | Putting Conductive TPU To The Test | Heidi Ulrich | [
"Parts"
] | [
"conductive",
"conductivity",
"connector",
"filament",
"strip",
"tape",
"TPU"
] | Ever pried apart an LCD? If so, you’ve likely stumbled at the unassuming zebra strip — the pliable connector that makes bridging PCB pads to glass traces look effortless. [Chuck] recently set out to test if he could
hack together his own zebra strip using conductive TPU and a 3D printer
.
[Chuck] started by printing al... | 3 | 3 | [
{
"comment_id": "8109384",
"author": "MinorHavoc",
"timestamp": "2025-03-15T20:39:29",
"content": "That Reprapper conductive TPU sounds perfect for ESD control and perhaps for soft buttons or touch-sensing inputs when using short conduction paths. For most electronic circuits though, not so much.",... | 1,760,371,606.567775 | ||
https://hackaday.com/2025/03/15/my-scammer-girlfriend-baiting-a-romance-fraudster/ | My Scammer Girlfriend: Baiting A Romance Fraudster | Maya Posch | [
"Security Hacks"
] | [
"scam"
] | Nobody likes spam messages, but some of them contain rather fascinating scams. Case in point, [Ben Tasker] recently got a few romance scam emails that made him decide to
take a poke at the scam behind these messages
. This particular scam tries to draw in marks with an attached photo (pilfered from Facebook) and fake p... | 21 | 10 | [
{
"comment_id": "8109295",
"author": "shinsukke",
"timestamp": "2025-03-15T14:23:59",
"content": "For shame, they couldn’t even be bothered to remove the image metadata! An of course theI have actually written quite a bit of software which uses stable diffusion, and LLMs (all locally hosted!) to mak... | 1,760,371,606.525283 | ||
https://hackaday.com/2025/03/13/britcss-write-css-with-british-english-spellings/ | BritCSS: Write CSS With British English Spellings | Maya Posch | [
"internet hacks"
] | [
"css",
"the death of the english language"
] | Everyone knows that there is only one proper English, with the rest being mere derivatives that bastardize the spelling and grammar. Despite this, the hoodlums who staged a violent uprising against British rule in the American colonies have somehow made their uncouth dialect dominant in the information technologies tha... | 37 | 20 | [
{
"comment_id": "8108762",
"author": "Gravis",
"timestamp": "2025-03-13T23:37:47",
"content": "Sophistry.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8108766",
"author": "rclark",
"timestamp": "2025-03-13T23:43:04",
"content": "Sounds like an Ap... | 1,760,371,606.461226 | ||
https://hackaday.com/2025/03/13/have-li-ion-batteries-gone-too-far/ | Have Li-ion Batteries Gone Too Far? | Navarre Bartz | [
"Battery Hacks"
] | [
"batteries",
"design",
"European Union",
"Li-ion",
"lithium battery",
"repair",
"reuse",
"right to repair"
] | The proliferation of affordable lithium batteries has made modern life convenient in a way we could only imagine in the 80s when everything was powered by squadrons of AAs, or has it? [Ian Bogost] ponders whether
sticking a lithium in every new device
is really the best idea.
There’s no doubt, that for some application... | 85 | 16 | [
{
"comment_id": "8108697",
"author": "Steven Clark",
"timestamp": "2025-03-13T20:19:04",
"content": "I really think we should have invented standard caps and wrapping for 18650 cells to let them be used replaceably like 20 years ago. Maybe key the caps by chemistry or something so they can’t be mix... | 1,760,371,606.832728 | ||
https://hackaday.com/2025/03/13/got-junk-then-build-this-scrappy-tea-laser/ | Got Junk? Then Build This Scrappy TEA Laser | Dan Maloney | [
"Laser Hacks"
] | [
"flyback",
"laser",
"nitrogen",
"tea",
"transversely excited atmospheric",
"ZVS"
] | A piece of glass, some bits of tinfoil, a sheet of plastic, a couple of razor blades, and a few assorted bits and bobs are all it takes to build
this TEA nitrogen laser
. Oh, and a 5,000-volt flyback supply with enough amperage to stop your heart. You’ll need that too.
Seriously, if you choose to follow [MultiverseCura... | 24 | 9 | [
{
"comment_id": "8108678",
"author": "synch",
"timestamp": "2025-03-13T18:55:25",
"content": "I wonder if they are x-ray emitters ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8108689",
"author": "Bill",
"timestamp": "2025-03-13T19:44:08",
"cont... | 1,760,371,606.900531 | ||
https://hackaday.com/2025/03/13/linux-fu-use-the-source-command-luke/ | Linux Fu: Use The Source (Command), Luke | Al Williams | [
"Hackaday Columns",
"Linux Hacks",
"Slider"
] | [
"bash",
"linux",
"shell script"
] | You can argue if bash is a good programming language or not, but you can’t argue that it is a programming language. However, there are a few oddities about it that make it different from most other languages you probably know. For one thing, variables are dynamically scoped. Second, you can easily change variables in a... | 12 | 10 | [
{
"comment_id": "8108668",
"author": "superkuh",
"timestamp": "2025-03-13T18:14:55",
"content": "The new comment spam filter is broken. You need to change your Akismet config on hackaday so that it lets people post links in comments. Or at the very least tells them when they’re being blocked instead... | 1,760,371,607.00781 | ||
https://hackaday.com/2025/03/13/hacking-a-rotary-phone/ | Hacking A Rotary Phone | Al Williams | [
"Phone Hacks"
] | [
"dial phone",
"rotary dial"
] | [Yaymukund] made an interesting observation. Old-style rotary phones were made to last and made for service. Why? Because you didn’t own them, the phone company did. There was no advantage for them for you to need a service call or a new phone. Of course, many of these old phones are still hanging around like the
GPO 7... | 15 | 7 | [
{
"comment_id": "8108613",
"author": "Antron Argaiv",
"timestamp": "2025-03-13T15:32:34",
"content": "The phone itself was £65That sounds…expensive.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8108616",
"author": "Evaprototype",
"timestamp... | 1,760,371,606.951496 | ||
https://hackaday.com/2025/03/13/hackaday-europe-2025-speaker-schedule-and-official-event-page/ | Hackaday Europe 2025: Speaker Schedule And Official Event Page | Tom Nardi | [
"cons",
"Hackaday Columns",
"News"
] | [
"2025 Hackaday Europe",
"schedule",
"speakers"
] | Hackaday Europe 2025 is just days away, and we’ve got the finalized speaker schedule hot off the digital press. We’re also pleased to announce that the
event page is now officially live
, where you can find all the vital information about the weekend’s festivities in one place.
Whether you’ll be joining the fun in Berl... | 0 | 0 | [] | 1,760,371,607.074285 | ||
https://hackaday.com/2025/03/13/high-speed-reservoir-computing-with-integrated-laser-graded-artificial-neurons/ | High-Speed Reservoir Computing With Integrated Laser Graded Artificial Neurons | Maya Posch | [
"Science"
] | [
"neuromorphic",
"reservoir computing"
] | So-called neuromorphic computing involves the use of physical artificial neurons to do computing in a way that is inspired by the human brain. With
photonic
neuromorphic computing these artificial neurons generally use laser sources and structures such as micro-ring resonators and resonant tunneling diodes to inject ph... | 2 | 2 | [
{
"comment_id": "8108567",
"author": "ono",
"timestamp": "2025-03-13T12:12:33",
"content": "Wonderful. Where is the 555 ?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8108818",
"author": "eresonance",
"timestamp": "2025-03-14T03:57:18",
"content"... | 1,760,371,607.121504 | ||
https://hackaday.com/2025/03/15/hackaday-europe-2025-streaming-live/ | Hackaday Europe 2025: Streaming Live | Tom Nardi | [
"cons",
"News"
] | [
"2025 Hackaday Europe",
"live steam"
] | Hackaday Europe 2025 is in full swing, and whether you’re experiencing it live in Berlin or following along from home, here’s where you’ll find all the info you need to get the most out of it.
Event Page:
https://hackaday.io/europe2025
Chat:
Hackaday Discord
(Channels:
europe-2025
/
badge-hacking
)
Talk Streams:
https:... | 3 | 2 | [
{
"comment_id": "8109276",
"author": "CJay",
"timestamp": "2025-03-15T13:04:36",
"content": "Well that’s my day sorted.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8109286",
"author": "Jan Prägert",
"timestamp": "2025-03-15T13:32:01",
... | 1,760,371,607.266174 | ||
https://hackaday.com/2025/03/15/probably-the-simplest-sequencing-synth/ | Probably The Simplest Sequencing Synth | Jenny List | [
"classic hacks",
"Musical Hacks"
] | [
"4017",
"555",
"cmos",
"synthesiser"
] | With inexpensive microntrollers capable of the most impressive feats of sound synthesis, it’s not so often we see projects that return to an earlier style of electronic music project. The 1-bit synth from [Electroagenda]
takes us firmly into that territory
, employing that most trusty of circuits, a 555.
It’s a time-ho... | 31 | 16 | [
{
"comment_id": "8109260",
"author": "Jan",
"timestamp": "2025-03-15T11:23:48",
"content": "The sequencer should be 8, 12 or 16 steps. Not 10.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8109262",
"author": "ono",
"timestamp": "2025-03-15T... | 1,760,371,607.45638 | ||
https://hackaday.com/2025/03/14/make-your-cheap-thermal-camera-into-a-microscope/ | Make Your Cheap Thermal Camera Into A Microscope | Al Williams | [
"digital cameras hacks"
] | [
"ir camera",
"microscope",
"thermal camera"
] | [Project 326] has a cheap thermal camera that plugs into a smart phone. Sure they are handy, but what if you could hack one into a microscope with a resolution measured in microns? It is
easier than you might think
and you can see how in the video below.
Of course, microscopes need lenses, but glass doesn’t usually pas... | 17 | 5 | [
{
"comment_id": "8109223",
"author": "helge",
"timestamp": "2025-03-15T07:07:25",
"content": "No need for devices under test to warm up until the false color view occasionally provides higher contrast.With periodic pulsing and some post-processing, spatial resolution and contrast can be improved (lo... | 1,760,371,607.377233 | ||
https://hackaday.com/2025/03/14/building-a-ten-hundred-key-computer-word-giving-thing/ | Building A Ten-Hundred Key Computer Word-Giving Thing | Dan Maloney | [
"Peripherals Hacks"
] | [
"dye sublimation",
"keyboard",
"keycaps",
"word",
"xkcd"
] | From the styling of this article’s title, some might assume that the Hackaday editors are asleep at the switch this fine day. While that might be true — it’s not our turn to watch them — others will recognize this tortured phrasing as one way to use the 1,000 most commonly used words in the English language to describe... | 18 | 15 | [
{
"comment_id": "8109179",
"author": "echodelta",
"timestamp": "2025-03-15T02:44:33",
"content": "First I thought it’d work for the precursor of modern Japanese or Chinese where they had thousands of pictograms for words, but then I realized it would also work for all the important but hard to see p... | 1,760,371,607.32111 | ||
https://hackaday.com/2025/03/14/cp-combining-the-usefulness-of-c-with-the-excellence-of-prolog/ | C+P: Combining The Usefulness Of C With The Excellence Of Prolog | Maya Posch | [
"Software Development"
] | [
"c++",
"prolog"
] | In a move that will absolutely not over-excite anyone, nor lead to any heated arguments, [needleful] posits that their
C Plus Prolog (C+P for short) programming language
is the best possible language ever. This is due to it combining the best of the only good programming language (Prolog) with the best of the only usef... | 7 | 6 | [
{
"comment_id": "8109154",
"author": "CMH62",
"timestamp": "2025-03-15T00:51:03",
"content": "Somebody’s channeling their inner Brian Benchoff!! 😆",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8109242",
"author": "Andrew",
"timestamp": "2025-03-15T0... | 1,760,371,607.499139 | ||
https://hackaday.com/2025/03/14/pi-hand-is-a-digital-display-of-a-different-sort/ | Pi Hand Is A Digital Display Of A Different Sort | Tom Nardi | [
"Microcontrollers",
"Robots Hacks"
] | [
"Pi",
"Pi day",
"robotic hand"
] | Hackers enjoy a good theme, and so it comes as no surprise that every time March 14th (Pi Day) rolls around, the tip line sees an uptick in mathematical activity. Whether it’s something they personally did or some other person’s project they want to bring to our attention, a lot of folks out there are very excited abou... | 8 | 5 | [
{
"comment_id": "8109081",
"author": "Wally Hulea",
"timestamp": "2025-03-14T20:20:21",
"content": "You could have the hand talk in ASCII, just have the thumb indicate if it’s the lower value nibble of the byte or the upper nibble value of the byte. Ignore the upper nibble if the characters are in t... | 1,760,371,607.664431 | ||
https://hackaday.com/2025/03/14/hackaday-podcast-episode-312-heart-attacks-the-speed-of-light-and-self-balancing/ | Hackaday Podcast Episode 312: Heart Attacks, The Speed Of Light, And Self-balancing | Al Williams | [
"Hackaday Columns",
"Podcasts",
"Slider"
] | [
"Hackaday Podcast"
] | Elliot does the podcast on the road to Supercon Europe, and Al is in the mood for math and nostalgia this week. Listen in and find out what they were reading on Hackaday this week.
The guys talked about the ESP-32 non-backdoor and battery fires. Then it was on to the hacks.
Self-balancing robots and satellite imaging w... | 7 | 3 | [
{
"comment_id": "8109090",
"author": "Dude",
"timestamp": "2025-03-14T20:46:38",
"content": "The problem with “It’s going to take our jobs” IS exactly that it did, and people had to shift to doing other stuff. It did happen, and it keeps on happening. Guess what – eventually we’ll run out of “other ... | 1,760,371,607.546916 | ||
https://hackaday.com/2025/03/14/you-know-pi-but-do-you-really-know-e/ | You Know Pi, But Do You Really Know E? | Al Williams | [
"Featured",
"Interest",
"Misc Hacks",
"Slider"
] | [
"e",
"mathematics",
"Pi day"
] | Pi Day is here! We bet that you know that famous constant to a few decimal points, and you could probably explain what it really means: the ratio of a circle’s circumference to its diameter. But what about the constant e? Sure, you might know it is a transcendental number around 2.72 or so. You probably know it is the ... | 29 | 12 | [
{
"comment_id": "8109034",
"author": "rclark",
"timestamp": "2025-03-14T17:37:48",
"content": "I just finished a book on the story of e. Fascinating how even used in general and then on to e with complex numbers like Euler’s e^i*π+1=0 to tie the fundamental constants together.",
"parent_id": n... | 1,760,371,607.619327 | ||
https://hackaday.com/2025/03/14/utahs-forge-a-research-laboratory-for-enhanced-geothermal-systems/ | Utah’s FORGE: A Research Laboratory For Enhanced Geothermal Systems | Maya Posch | [
"Science"
] | [
"geothermal energy"
] | Geothermal heat is a tantalizing source of energy that’s quite literally right below our feet. At the same time geothermal energy is hard to develop as the Earth’s crust is too thick in most places, limiting this to areas where magma is close enough to the surface and the underground rock permeable enough for water. Th... | 6 | 2 | [
{
"comment_id": "8109004",
"author": "Clancydaenlightened",
"timestamp": "2025-03-14T16:04:08",
"content": "Well if you dig a super deep bore holeThen insert two pipes one nested inside the otherPump water in one pipe, the other provides steamAtleast the bottom of the super deep bore hole in Russia ... | 1,760,371,607.705246 | ||
https://hackaday.com/2025/03/14/this-week-in-security-the-x-ddos-the-esp32-basementdoor-and-the-camelcase-rce/ | This Week In Security: The X DDoS, The ESP32 Basementdoor, And The CamelCase RCE | Jonathan Bennett | [
"Hackaday Columns",
"News",
"Security Hacks",
"Slider"
] | [
"Basementdoor",
"camelCase",
"ddos",
"This Week in Security"
] | We would be remiss if we didn’t address
the X Distributed Denial of Service (DDoS) attack that’s been happening this week
. It seems like everyone is is trying to make political hay out of the DDoS, but we’re going to set that aside as much as possible and talk about the technical details. Elon made an early statement ... | 9 | 8 | [
{
"comment_id": "8108993",
"author": "I Alone Possess The Truth",
"timestamp": "2025-03-14T15:29:22",
"content": "“The “backdoor” that was discovered was this set of undocumented vendor-specific commands.” As opposed to …You can’t tell the reader what C2I or a Gerber is in the text but let’s have a... | 1,760,371,607.752974 | ||
https://hackaday.com/2025/03/14/clockworkpi-unveils-new-picocalc-handheld/ | ClockworkPi Unveils New PicoCalc Handheld | Tom Nardi | [
"handhelds hacks",
"Microcontrollers",
"Raspberry Pi"
] | [
"clockworkpi",
"Raspberry Pi Pico",
"Scientific Calculator"
] | Do you like scientific calculators? Don’t bother answering that question, you’re reading Hackaday so we already know the answer. We also know you’re a fan of building things yourself and open source, which makes us fairly sure you’ll be just as interested in the
recently announced ClockworkPi PicoCalc
as we are.
On the... | 33 | 18 | [
{
"comment_id": "8108904",
"author": "Clancydaenlightened",
"timestamp": "2025-03-14T11:16:20",
"content": "Meanwhile I was running android gingerbread on my ti nspire cxGBA, NES, and SNES emulators tooIt Even has a wifi dongle you can get and USB, with color display",
"parent_id": null,
"de... | 1,760,371,607.857475 | ||
https://hackaday.com/2025/03/14/the-trials-and-tribulations-of-building-a-pasta-display/ | The Trials And Tribulations Of Building A Pasta Display | Tom Nardi | [
"hardware"
] | [
"28BYJ-48",
"analog display",
"pasta"
] | We love unique displays here at Hackaday. If you can figure out how to show information on some weird object, we’re all about it. So when
[Julius Curt] wrote in to share his work on the Pasta Analog Display
, we were hooked from the subject line.
But in reading his account, it ended up being even better than we hoped f... | 14 | 6 | [
{
"comment_id": "8108894",
"author": "Greg Woods",
"timestamp": "2025-03-14T10:36:04",
"content": "I wish I had this much time on my hands!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8108948",
"author": "Joshua",
"timestamp": "2025-03-14T... | 1,760,371,607.933739 | ||
https://hackaday.com/2025/03/13/the-mysterious-and-important-work-of-prop-design-on-severance/ | The Mysterious And Important Work Of Prop Design OnSeverance | Dan Maloney | [
"Misc Hacks"
] | [
"ESP-32",
"meter",
"Nagra",
"prop",
"servo",
"Severance"
] | Have you seen
Severance
? Chances are good that you have; the TV series has become wildly popular in its second season, to the point where the fandom’s dedication is difficult to distinguish from the in-universe cult of [Kier]. Part of the show’s appeal comes from its overall aesthetic, which is captured in
this descri... | 28 | 11 | [
{
"comment_id": "8108838",
"author": "DavidO",
"timestamp": "2025-03-14T06:46:27",
"content": "Beautiful prop! And great example what can be done with just a few parts!!Just a tech one – the needles are steered by stepper motors, not servos. Looks like small car dash gauge steppers … aaand based on ... | 1,760,371,607.995867 | ||
https://hackaday.com/2025/03/13/tracking-deep-sky-objects/ | Tracking Deep-Sky Objects | Bryan Cockfield | [
"Software Hacks"
] | [
"astronomy",
"astrophotography",
"camera",
"deep sky object",
"dso",
"NoVA",
"simbad",
"telescope",
"tracker"
] | Astrophotography, and astronomy in general, takes some fairly specialized tools and a high amount of precision. Setting up the equipment can also take a lot of time, especially for amateurs traveling to various locations with their equipment, so anything that can reduce the amount of time spent looking for objects and ... | 2 | 2 | [
{
"comment_id": "8108841",
"author": "Joshua",
"timestamp": "2025-03-14T07:06:42",
"content": "This reminds me of using SkyMap on a 286 with 4MB of RAM running Windows 3.1!Or SkyGlobe 3.6 on DOS (with S parameter for Super VGA)..It was so fun watching out for interesting celestial bodies.Especially ... | 1,760,371,608.085146 | ||
https://hackaday.com/2025/03/13/a-decade-resistance-box-from-pcbs/ | A Decade Resistance Box From PCBs | Jenny List | [
"PCB Hacks",
"Tool Hacks"
] | [
"gerbers",
"pcb art",
"resistance box"
] | One of those useful things to have around on your bench is a decade resistance box, essentially a dial-a-resistance instrument. They used to be quite expensive in line with the cost of close-tolerance resistors, but the prices have come down and it’s within reach to build your own. Electronic design consultancy Dekimo ... | 18 | 7 | [
{
"comment_id": "8108529",
"author": "Christopher Hoover",
"timestamp": "2025-03-13T08:34:31",
"content": "No license means no license.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8108534",
"author": "jpa",
"timestamp": "2025-03-13T09:03:5... | 1,760,371,608.05116 | ||
https://hackaday.com/2025/03/12/meshtastic-adds-wireless-connectivity-to-possum-trap/ | Meshtastic Adds Wireless Connectivity To Possum Trap | Bryan Cockfield | [
"Radio Hacks"
] | [
"3.5mm audio",
"animal",
"live trap",
"Meshtastic",
"possum",
"trap"
] | Perhaps every gardener to attempt to grow a tomato, lettuce, or bean has had to contend with animals trying to enjoy the food before the gardener themselves can, whether it’s a groundhog, rabbit, mouse, crow, or even iguana. There are numerous ways to discourage these mischievous animals from foraging the garden beds i... | 10 | 6 | [
{
"comment_id": "8108506",
"author": "Robert",
"timestamp": "2025-03-13T07:06:17",
"content": "Press mute before playing video.Actually, if you’re looking for technical detail, don’t press play. The whole video seems to be possum, por…, well, possum footage and not really hackaday-worthy details on ... | 1,760,371,609.01589 | ||
https://hackaday.com/2025/03/12/a-fast-rewind-to-the-era-of-tapesponding/ | A Fast Rewind To The Era Of Tapesponding | Heidi Ulrich | [
"classic hacks",
"home entertainment hacks",
"Radio Hacks"
] | [
"cassette",
"communication",
"long distance",
"magnetic tape",
"reel",
"social",
"tape",
"tape sponding",
"tapes",
"tapesponding"
] | Imagine a time before Discord servers and cheap long-distance calls. Back in the 1950s, a curious and crafty group of enthusiasts invented their own global social network: on reels of magnetic tape. They called it
tapesponding
(short for tape corresponding), and it was a booming hobby for thousands of radio hams, tinke... | 5 | 3 | [
{
"comment_id": "8108489",
"author": "echodelta",
"timestamp": "2025-03-13T03:12:26",
"content": "I remember buying 3 inch reels that came in a cassette shaped soft plastic clam shell box, that size made it postal friendly and a label for this purpose was on it. I knew 2 who sent tapes during the Na... | 1,760,371,608.503363 | ||
https://hackaday.com/2025/03/12/eprom-based-enigma-machine/ | EPROM-based Enigma Machine | Bryan Cockfield | [
"classic hacks",
"computer hacks"
] | [
"bombe",
"Cipher",
"colossus",
"eeprom",
"encryption",
"enigma",
"WW2"
] | The Enigma machine is perhaps one of the most legendary devices to come out of World War II. The Germans used the ingenious cryptographic device to hide their communications from the Allies, who in turn spent an incredible amount of time and energy in finding a way to break it. While the original Enigma was a complicat... | 5 | 3 | [
{
"comment_id": "8108448",
"author": "Antron Argaiv",
"timestamp": "2025-03-12T23:36:22",
"content": "COLOSSUS was built to break the Lorenz teleprinter cipher, not the Enigma.https://en.m.wikipedia.org/wiki/Colossus_computer",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,371,608.463791 | ||
https://hackaday.com/2025/03/12/floss-weekly-episode-824-gratuitous-navel-gazing/ | FLOSS Weekly Episode 824: Gratuitous Navel Gazing | Jonathan Bennett | [
"Hackaday Columns",
"Podcasts"
] | [
"FLOSS Weekly",
"Personal AI",
"scale"
] | This week,
Jonathan Bennett
chats with
Doc Searls
about SCaLE and Personal AI! What’s the vision of an AI that consumers run themselves, what form factor might that take, and how do we get there?
https://www.kwaai.ai/
https://blog.cryptographyengineering.com/2025/02/23/three-questions-about-apple-encryption-and-the-u-k... | 2 | 2 | [
{
"comment_id": "8108426",
"author": "Ostracus",
"timestamp": "2025-03-12T21:22:32",
"content": "I’ve been thinking part of a NAS might be a good idea. Problem most commercial units are kind of underpowered.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "81086... | 1,760,371,608.285453 | ||
https://hackaday.com/2025/03/12/flyingcam-is-sweet-diy-webcam-on-a-stick/ | FlyingCam Is A Sweet DIY Webcam On A Stick | Elliot Williams | [
"classic hacks"
] | [
"ESP32",
"ESP32 camera",
"ikea"
] | Imagine you want to monitor a pot on the stove to see if it’s boiling over for just a few minutes, but you don’t want to have a dedicated permanent IP webcam solution in your kitchen.
[Sebastian Duell]’s FlyingCam
hijacks an IKEA lamp gooseneck to become something you never knew you needed: a wireless camera for short-... | 5 | 4 | [
{
"comment_id": "8108372",
"author": "AAMACO",
"timestamp": "2025-03-12T17:56:33",
"content": "Sweet, now I know what I’m going to do with my kids old baby monitor once they’re old enough. Plus, it doesn’t require a local network (but I suppose Sebastian’s project could be made networkless too).",
... | 1,760,371,608.3306 | ||
https://hackaday.com/2025/03/12/pixel-watch-3s-loss-of-pulse-detection-the-algorithms-that-tell-someone-is-dying/ | Pixel Watch 3’s Loss Of Pulse Detection: The Algorithms That Tell Someone Is Dying | Maya Posch | [
"Featured",
"Medical Hacks",
"Science",
"Slider"
] | [
"cardiac arrest",
"health monitor"
] | More and more of the ‘smart’ gadgets like watches and phones that we carry around with us these days come with features that we’d not care to ever need. Since these are devices that we strap onto our wrists and generally carry in close proximity to our bodies, they can use their sensors to make an estimation of whether... | 63 | 22 | [
{
"comment_id": "8108332",
"author": "jalnl",
"timestamp": "2025-03-12T15:31:20",
"content": "Remind me not to have a cardiac arrest when sitting in a chair…",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8108401",
"author": "Joshua",
"timest... | 1,760,371,608.61328 | ||
https://hackaday.com/2025/03/12/some-useful-notes-on-the-6805-ec10-addressable-rgb-led/ | Some Useful Notes On The 6805-EC10 Addressable RGB LED | Dave Rowntree | [
"LED Hacks"
] | [
"1111",
"addressable led",
"KiCAD",
"RGB LED",
"SK6805"
] | LEDs are getting smaller and smaller, and the newest generations of indexable RGB LEDs are even fiddlier to use than their already diminutive predecessors. [Alex Lorman] has
written some notes about the minuscule SK6805-EC10
series of LEDs, which may be helpful to those wanting to learn how to deal with these in a more... | 9 | 6 | [
{
"comment_id": "8108261",
"author": "tyethgundry",
"timestamp": "2025-03-12T11:50:43",
"content": "Neopixels are WS2812 compatible RGB LEDs with the 3wire strands [4pin data-in out vcc gnd], running at 400/800kHz signal. Size is irrelevant.Dotstars are the APA102 compatible 4wire strands [6pin cloc... | 1,760,371,608.661438 | ||
https://hackaday.com/2025/03/12/i2c-sniffing-comes-to-the-bus-pirate-5/ | I2C Sniffing Comes To The Bus Pirate 5 | Tom Nardi | [
"Tool Hacks"
] | [
"Bus Pirate 5",
"i2c",
"reverse engineering",
"sniffer"
] | While the Bus Pirate 5 is an impressive piece of hardware, the software is arguably where the project really shines. Creator [Ian Lesnet] and several members of the community are constantly working to add new features and capabilities to the hardware hacking multi-tool, to the point that if your firmware is more than a... | 6 | 4 | [
{
"comment_id": "8108215",
"author": "davedarko",
"timestamp": "2025-03-12T08:19:12",
"content": "That’s nice! I stumbled over Juan’s repository when I was looking into I2C sniffing with the RP2040.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8108425",
... | 1,760,371,608.71081 | ||
https://hackaday.com/2025/03/11/classy-paper-tape-reader-complements-homebrew-retrocomputer/ | Classy Paper Tape Reader Complements Homebrew Retrocomputer | Dan Maloney | [
"Retrocomputing"
] | [
"laser cutter",
"paper tape",
"tape storage"
] | If you were one of the earliest of early adopters in the home computing revolution, you might have had to settle for paper tape mass storage. It was slow, it was bulky, but it was what you had, and that gave it a certain charm that’s hard to resist. And that charm is what [Joshua Coleman] captures with
this DIY paper t... | 26 | 9 | [
{
"comment_id": "8108161",
"author": "Cody",
"timestamp": "2025-03-12T05:27:25",
"content": "Now someone just needs to design a high speed paper tape punch so it has something to read. Laser cutting the tape is way slower than the already slow punch on a teletype.",
"parent_id": null,
"depth... | 1,760,371,608.771857 | ||
https://hackaday.com/2025/03/11/lies-damned-lies-and-igbt-datasheets/ | Lies, Damned Lies, And IGBT Datasheets | Jenny List | [
"Parts"
] | [
"datasheet",
"igbt",
"specifications"
] | We have all seen optimistic claims for electronic products that fail to match the reality, and [Electronic Wizard]
is following one up in a recent video
. Can a relatively small IGBT really switch 200 A as claimed by a dubious seller? Off to the datasheet to find out!
The device in question is from Toshiba, and comes i... | 44 | 11 | [
{
"comment_id": "8108134",
"author": "0xdeadbeef",
"timestamp": "2025-03-12T02:44:35",
"content": "The cooling rig required to maintain that whitTypo. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8108135",
"author": "TG",
"timestamp": "2025-03-12... | 1,760,371,609.222721 | ||
https://hackaday.com/2025/03/11/how-to-use-llms-for-programming-tasks/ | How To Use LLMs For Programming Tasks | Donald Papp | [
"Artificial Intelligence",
"how-to",
"Software Development"
] | [
"ai",
"LLM",
"programming",
"tips"
] | [Simon Willison] has put together a list of how, exactly, one goes about
using a large language models (LLM) to help write code
. If you have wondered just what the workflow and techniques look like, give it a read. It’s full of examples, strategies, and useful tips for effectively using AI assistants like ChatGPT, Cla... | 60 | 15 | [
{
"comment_id": "8108103",
"author": "Joshua",
"timestamp": "2025-03-11T23:38:29",
"content": "Beware, the problem might be the following:These “chatbots” do take information from reliable human sources, such as coding forums.But if less and less human coders remain, the quality of the imformation s... | 1,760,371,608.962469 |
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