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https://hackaday.com/2023/05/04/beaglestamp-makes-soldering-linux-into-your-projects-easier/ | BeagleStamp Makes Soldering Linux Into Your Projects Easier | Navarre Bartz | [
"hardware",
"Microcontrollers"
] | [
"Beagle",
"beagleboard",
"BeagleStamp",
"Embedded Linux",
"linux",
"PocketBeagle",
"smd module"
] | There are a lot of things you can do with today’s powerful microcontrollers, but sometimes you really need a full embedded Linux setup. [Dylan Brophy] wanted to make it easier to add Linux to his own projects and designed
the BeagleStamp
.
Squeezed onto a 1″ square, the BeagleStamp puts the power of a PocketBeagle into... | 44 | 11 | [
{
"comment_id": "6638932",
"author": "Frieder",
"timestamp": "2023-05-04T15:47:15",
"content": "Ok, I have seen SoMs and SiPs, but I think it’s the first SiP on a SoM I’ve come across.By the way, there’s a joined effort from multiple vendors to create an “open” standard for similar solderable module... | 1,760,372,311.641259 | ||
https://hackaday.com/2023/05/04/virgin-galactic-cautiously-returns-to-flight/ | Virgin Galactic Cautiously Returns To Flight | Tom Nardi | [
"Current Events",
"Featured",
"News",
"Space"
] | [
"space tourism",
"spaceplane",
"suborbital",
"Virgin Galactic"
] | After Richard Branson delivered some inspiring words from his seat aboard SpaceShipTwo
Unity
, he unbuckled himself and started to float around the vehicle’s cabin along with three other Virgin Galactic employees. Reaching an apogee of 86 kilometers (53 miles), the passengers enjoyed four minutes of weightlessness duri... | 32 | 10 | [
{
"comment_id": "6638910",
"author": "Artenz",
"timestamp": "2023-05-04T14:30:52",
"content": "Richard Branson is willing to invest a lot of money & energy in his glorified rollercoaster ride.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6638911",
... | 1,760,372,311.788862 | ||
https://hackaday.com/2023/05/06/how-to-model-a-twisted-part-in-freecad/ | How To Model A Twisted Part In FreeCAD | Donald Papp | [
"how-to"
] | [
"cad",
"curves",
"design",
"freecad",
"Twist"
] | Quick references are handy, but sometimes it’s nice to have a process demonstrated from beginning to end. In that spirit, [Darren Stone] created a video demonstrating
how to model a twisted part in FreeCAD
, showing the entire workflow of creating the part as a blend of surfaces and curves that get turned into a solid.... | 84 | 14 | [
{
"comment_id": "6639561",
"author": "Dude",
"timestamp": "2023-05-06T12:07:36",
"content": "Compare:https://www.youtube.com/watch?v=KrdI7G2k50g",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6639638",
"author": "DOugl",
"timestamp": "2023-05... | 1,760,372,312.130451 | ||
https://hackaday.com/2023/05/06/inside-a-pair-of-smart-sunglasses/ | Inside A Pair Of Smart Sunglasses | Bryan Cockfield | [
"Teardown",
"Wearable Hacks"
] | [
"battery",
"camera",
"glasses",
"mobile",
"ray-ban",
"Snapdragon",
"sunglasses",
"video",
"wearable"
] | If you’re willing to spend $200 USD on nothing more than 100 grams of plastic, there are a few trendy sunglasses brands that are ready to take your money before you have time to think twice. Sure, you can get a pair of sunglasses for an order of magnitude less money that do the exact same job, but the real value is in ... | 14 | 5 | [
{
"comment_id": "6639522",
"author": "Leano",
"timestamp": "2023-05-06T08:37:39",
"content": "At £150, they’re certainly not cheap, but I’ve never found any other lens that even comes close to correcting my red/green colour deficiency as the “bronze HCL” lenses do from Maui Jim. They weigh 10g, don’... | 1,760,372,311.965253 | ||
https://hackaday.com/2023/05/05/a-dedicated-gpu-for-your-favorite-sbc/ | A Dedicated GPU For Your Favorite SBC | Bryan Cockfield | [
"Raspberry Pi"
] | [
"32-bit",
"amd",
"compute module",
"dedicated graphics",
"drivers",
"graphics card",
"interface",
"NVIDIA",
"pci",
"rasberry pi"
] | The Raspberry Pi is famous for its low cost, versatile and open Linux environment, and plentiful I/O, making it a perfect device not only for its originally-intended educational purposes but for basically every hobbyist from gardeners to roboticists to amateur radio operators. Most builds tend to make use of the GPIO p... | 35 | 5 | [
{
"comment_id": "6639501",
"author": "Manfred",
"timestamp": "2023-05-06T06:05:28",
"content": "But why a PCIe card?A microitx baseboard for the cm4 would have been much more useful.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6639507",
"author": "Speci... | 1,760,372,311.551777 | ||
https://hackaday.com/2023/05/05/leaked-internal-google-document-claims-open-source-ai-will-outcompete-google-and-openai/ | Leaked Internal Google Document Claims Open Source AI Will Outcompete Google And OpenAI | Maya Posch | [
"News",
"Software Development"
] | [
"large language model",
"LLM",
"open source"
] | In the world of large language models (LLM), the focus has for the longest time been on proprietary technologies from companies such as OpenAI (GPT-3 & 4, ChatGPT, etc.) as well as increasingly everyone from Google to Meta and Microsoft. What’s remained underexposed in this whole discussion about which LLM will do more... | 37 | 19 | [
{
"comment_id": "6639474",
"author": "Ostracus",
"timestamp": "2023-05-06T02:10:12",
"content": "Seems to me though the big names have bigger data pools to draw upon (even if they end up paying for some of them), and people financially incentivized to curate the output for biases and other problem i... | 1,760,372,311.718017 | ||
https://hackaday.com/2023/05/05/holograms-display-time-with-esp32/ | Holograms Display Time With ESP32 | Bryan Cockfield | [
"clock hacks"
] | [
"3d",
"beam splitter",
"clock",
"ESP32",
"gcode",
"hologram",
"microcontroller",
"model",
"prism"
] | Holograms and holographic imagery are typically viewed within the frame of science fiction, with perhaps the most iconic examples being Princess Leia’s message to Obi-Wan in
Star Wars,
or the holodecks from
Star Trek.
In reality, holograms have been around for a surprising amount of time, with early holographic images ... | 30 | 12 | [
{
"comment_id": "6639456",
"author": "Gary",
"timestamp": "2023-05-05T23:51:36",
"content": "While a neat project, this is neither a hologram nor 3D. Any claim otherwise is downright misleading. It’s a Pepper’s Ghost illusion (a totally flat image), which is not a true hologram. This is [hackaday... | 1,760,372,311.473666 | ||
https://hackaday.com/2023/05/05/tactical-build-makes-machining-splined-shaft-a-snap/ | Tactical Build Makes Machining Splined Shaft A Snap | Dan Maloney | [
"Tool Hacks"
] | [
"dividing head",
"machining",
"milling machine",
"rotary table",
"rp2040",
"shaft",
"spline",
"stepper"
] | Quick, what’s 360 divided by 23? It’s easy enough to get the answer, of course, but if you need to machine a feature every 15.652 degrees around a shaft, how exactly would you accomplish that? There are a number of ways, but they all involve some degree of machining wizardry. Or, you can just make the problem go away w... | 9 | 3 | [
{
"comment_id": "6639427",
"author": "Michael K Johnson",
"timestamp": "2023-05-05T21:28:51",
"content": "Here’s another one also worth looking at for anyone contemplating building something similar:https://www.worldofward.com/It’s by the same person who has done a lot of firmware development for th... | 1,760,372,312.009065 | ||
https://hackaday.com/2023/05/05/op-amp-challenge-light-up-breadboard-shows-us-the-signals/ | Op-Amp Challenge: Light Up Breadboard Shows Us The Signals | Jenny List | [
"contests",
"hardware"
] | [
"breadboard",
"led",
"logic analyzer",
"Op Amp Challenge"
] | Most Hackaday readers will no doubt at some point used a solderless breadboard for prototyping. They do the job, but sometimes their layout can be inflexible and keeping track of signals can be a pain. There’s a neat idea from [rasmusviil0] which might go some way to making the humble breadboard easier to use,
it’s a b... | 5 | 4 | [
{
"comment_id": "6639392",
"author": "smellsofbikes",
"timestamp": "2023-05-05T19:21:28",
"content": "If you set up the op amp as a unity gain buffer, I think it could be quite useful for analog signals.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6639452... | 1,760,372,311.915956 | ||
https://hackaday.com/2023/05/03/nasas-voyager-space-probes-reserve-power-and-the-intricacies-of-rtg-based-power-systems/ | NASA’s Voyager Space Probe’s Reserve Power, And The Intricacies Of RTG-Based Power Systems | Maya Posch | [
"Hackaday Columns",
"Science",
"Slider",
"Space"
] | [
"radioisotope thermoelectric generator",
"RTG",
"Voyager 2"
] | Launched in 1977, the Voyager 1 and 2 space probes have been operating non-stop for over 45 years, making their way from Earth to our solar system’s outer planets and beyond. Courtesy of the radioisotope thermoelectric generators (RTGs) which provided 470 W at launch, they are able to function in the darkness of Deep S... | 46 | 11 | [
{
"comment_id": "6638652",
"author": "Manfred",
"timestamp": "2023-05-03T18:08:28",
"content": "Never read a technical article that was as vague as this one!What have they done?Bypassed a voltage regulator to avoid it’s losses?",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,372,311.878309 | ||
https://hackaday.com/2023/05/03/exploring-woodworking-mysteries-with-strain-gauges-and-raspberry-pi/ | Exploring Woodworking Mysteries With Strain Gauges And Raspberry Pi | Dan Maloney | [
"Tool Hacks"
] | [
"cherry",
"clamping",
"force",
"glue",
"hx711",
"joint",
"maple",
"oak",
"Pine",
"pressure",
"rule of thumb",
"strain gauge",
"wood"
] | If you’re not a woodworker, you might not have heard of the “45-degree rule.” It goes like this: a clamp exerts a force that radiates out across a triangular region of the wood that forms a right angle — 45 degrees on each side of the clamp’s point of contact. So, to ensure that force is applied as evenly as possible a... | 19 | 7 | [
{
"comment_id": "6638612",
"author": "cliff claven",
"timestamp": "2023-05-03T15:51:37",
"content": "Nice video. Thanks for sharing it. The 45degree rule is pretty common outside of woodworking, as well. When disturbing consolidated soil near a foundation to avoid loss of support, the undisturbed so... | 1,760,372,312.288188 | ||
https://hackaday.com/2023/05/03/barcodes-enter-the-matrix-in-2027/ | Barcodes Enter The Matrix In 2027 | Kristina Panos | [
"Art",
"Current Events",
"Featured",
"Interest",
"Original Art",
"Slider"
] | [
"2D bar code",
"bar code",
"barcode",
"POS",
"qr code",
"retail"
] | Beep. We’ve come a long way since June 26, 1974 when the first bar code was scanned at a grocery store in Troy, Ohio. That legendary pack of Juicy Fruit proved that even the smallest of items could now carry numbers associated with inventory and price.
By now, we’re all too familiar with this sound as self-checkouts ha... | 80 | 20 | [
{
"comment_id": "6638581",
"author": "willmore",
"timestamp": "2023-05-03T14:55:26",
"content": "To be “take[en] you on an experience that the brand wants you to have.” is pretty much the last thing I would ever want. This seems like a signifigant downgrade.",
"parent_id": null,
"depth": 1,... | 1,760,372,312.403559 | ||
https://hackaday.com/2023/05/03/moon-mission-failures-or-why-are-lunar-landings-so-hard/ | Moon Mission Failures, Or Why Are Lunar Landings So Hard? | Maya Posch | [
"Science",
"Space"
] | [
"moon",
"Moon landing"
] | Given the number of spacecraft (both crewed and uncrewed) that touched down on the Moon during the Space Race it’s sometimes hard to imagine why today, with all our modern technology, our remotely operated vehicles seem to have so much trouble not smashing themselves to bits on the regolith surface.
This is the focus o... | 41 | 12 | [
{
"comment_id": "6638533",
"author": "Mark",
"timestamp": "2023-05-03T11:35:21",
"content": "I’ve played Lunar Lander enough times to know how not to land.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6638543",
"author": "cyberteque",
"time... | 1,760,372,312.477083 | ||
https://hackaday.com/2023/05/03/kerfmeter-measures-laser-cutter-kerf-allowances-on-the-fly/ | Kerfmeter Measures Laser Cutter Kerf Allowances On The Fly | Dan Maloney | [
"Laser Hacks",
"Tool Hacks"
] | [
"box joint",
"cam",
"finger joint",
"kerf",
"kerf allowance",
"laser cutter"
] | Nothing beats a laser cutter and a sheet of Baltic birch plywood or MDF when it comes to making quick, attractive enclosures. Burning out all the pieces and fitting them together with finger joints is super satisfying — right up until you realize that you didn’t quite get the kerf allowance right, and your pieces don’t... | 21 | 7 | [
{
"comment_id": "6638498",
"author": "Doug",
"timestamp": "2023-05-03T08:16:33",
"content": "It occurs to me you don’t even need the special attachment. Marking a scale on the board and reference mark on the disc would allow you to turn it by hand, measure how far it turned, and input that value int... | 1,760,372,312.716437 | ||
https://hackaday.com/2023/05/02/ibm-pc-runs-basic-with-motorola-68000-cpu-upgrade/ | IBM PC Runs BASIC With Motorola 68000 CPU Upgrade | Robin Kearey | [
"classic hacks",
"Retrocomputing"
] | [
"8088",
"IBM PC",
"Motorola 68000",
"Teensy 4.1"
] | Although ARM CPUs have been making headway in several areas of computing over the last decade or so, the vast majority of desktop, laptop and server CPUs are still based on the x86 architecture. How that came to be is no secret, of course: IBM chose the Intel 8088 to power its model 5150 PC back in the early 1980s, and... | 13 | 6 | [
{
"comment_id": "6638470",
"author": "Michael Black",
"timestamp": "2023-05-03T05:08:20",
"content": "About thirty years ago there was a 68000 project in Radio Electronics, written by Peter Stark. I don’t think he designed it. It had an ISA bus and used IBM peripherals like the keyboard and videoc... | 1,760,372,313.39506 | ||
https://hackaday.com/2023/05/02/e-bike-battery-tapped-for-off-grid-laptop-power/ | E-Bike Battery Tapped For Off-Grid Laptop Power | Tom Nardi | [
"laptops hacks",
"Transportation Hacks"
] | [
"battery backup",
"battery pack",
"e-bike",
"power adapter"
] | If you’ve travelling via bike, you’ll know there’s a certain advantage to packing light. But what if you need to take your beefy desktop-replacement laptop with you on one of these trips? These power hungry machines can’t go far without their chargers (or a place to plug them in), which generally makes them poor travel... | 12 | 7 | [
{
"comment_id": "6638452",
"author": "Lily",
"timestamp": "2023-05-03T02:49:40",
"content": "To be clear the resistor here is just to set the output voltage on the converter. The resistor itself is not handling any load current (thankfully).",
"parent_id": null,
"depth": 1,
"replies": []... | 1,760,372,312.61199 | ||
https://hackaday.com/2023/05/04/jet-engine-tachometer-turned-into-unique-cpu-utilization-meter/ | Jet Engine Tachometer Turned Into Unique CPU Utilization Meter | Dan Maloney | [
"computer hacks"
] | [
"3-phase",
"avionics",
"direct digital synthesis",
"eddy current",
"magnetic drag",
"synchronous",
"tachometer",
"vfd"
] | When you’ve got a piece of interesting old aviation hardware on your desk, what do you do with it? If you’re not willing to relegate it to paperweight status, your only real choice is to tear it down to see what makes it tick. And if you’re lucky, you’ll be able to put it to work based on what you learned.
That’s what ... | 16 | 7 | [
{
"comment_id": "6638867",
"author": "ndhmio",
"timestamp": "2023-05-04T11:07:52",
"content": "When you’ve got a piece of interesting old aviation hardware on your desk, what do you do with it?First, check with geiger counter if it isn’t hot. Then see if it’s worth anything. If not, take it apart, s... | 1,760,372,312.767809 | ||
https://hackaday.com/2023/05/04/thermal-camera-plus-machine-learning-reads-passwords-off-keyboard-keys/ | Thermal Camera Plus Machine Learning Reads Passwords Off Keyboard Keys | Donald Papp | [
"Artificial Intelligence",
"Security Hacks"
] | [
"machine learning",
"Password cracking",
"security",
"Thermal"
] | An age-old vulnerability of physical keypads is visibly worn keys. For example, a number pad with digits clearly worn from repeated use provides an attacker with a clear starting point. The same concept can be applied to keyboards by
using a thermal camera with the help of machine learning
, but it also turns out that ... | 43 | 15 | [
{
"comment_id": "6638834",
"author": "Jan",
"timestamp": "2023-05-04T08:53:25",
"content": "Ok, an 8 letter password will give you 256 possible combinations.Add shifted and special characters and not even machine learning is going to help.",
"parent_id": null,
"depth": 1,
"replies": [
... | 1,760,372,312.558434 | ||
https://hackaday.com/2023/05/03/carbon-fiber-and-kevlar-make-this-linear-actuator-fast-and-strong/ | Carbon Fiber And Kevlar Make This Linear Actuator Fast And Strong | Dan Maloney | [
"Misc Hacks"
] | [
"cable drive",
"carbon fiber",
"kevlar",
"linear actuator",
"ODrive"
] | When it comes to the “build versus buy” question, “buy” almost always wins. The amount of time you have to put into building something is rarely justified, especially with a world of options available at the click of a mouse.
That’s not always the case, of course.
These custom-made linear actuators
are a perfect exampl... | 9 | 5 | [
{
"comment_id": "6638887",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-05-04T12:16:53",
"content": "I thought carbon fiber was Kevlar heated to char temperatures.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6638895",
"autho... | 1,760,372,312.661757 | ||
https://hackaday.com/2023/05/03/how-to-install-mac-os-on-the-nintendo-wii/ | How To Install Mac OS On The Nintendo Wii | Maya Posch | [
"Mac Hacks",
"Nintendo Wii Hacks"
] | [
"macOS",
"nintendo wii"
] | What if you could run Mac OS on a Nintendo Wii game console? That’s probably not a thought that has occurred to many Wii owners or Mac OS users, but that is no excuse not to give it a try, as [Michael]
handily demonstrates
in a recent video by running Mac OS 9 on a Nintendo’s legendary console. The first major issue is... | 5 | 5 | [
{
"comment_id": "6638786",
"author": "David Kuder",
"timestamp": "2023-05-04T02:32:19",
"content": "When I last looked at MoL years ago it was seemingly abandoned and almost impossible to get working then. It would have been interesting to see it working on a Power5 workstation or something even mor... | 1,760,372,312.80869 | ||
https://hackaday.com/2023/05/03/lora-goes-to-the-moon/ | LoRa Goes To The Moon | Bryan Cockfield | [
"Radio Hacks"
] | [
"Earth-Moon-Earth",
"EME",
"HackRF",
"long distance",
"LoRa",
"moon bounce",
"path loss",
"radio",
"sdr",
"SDRAngel"
] | LoRa is a communications method that allows for long range radio contacts to be made using typically low-powered devices. This shouldn’t be surprising given that LoRa is short for “long range” which typically involves distances on the order of a few kilometers. However, a group of students are taking the “long range” m... | 12 | 8 | [
{
"comment_id": "6638752",
"author": "jimbo janglies",
"timestamp": "2023-05-03T23:16:10",
"content": "and how much mass of wiring between components on a satellite can be replaced by low-power radio?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6638759",
... | 1,760,372,312.858835 | ||
https://hackaday.com/2023/05/03/new-drivers-for-ancient-webcam/ | New Drivers For Ancient Webcam | Bryan Cockfield | [
"Peripherals Hacks"
] | [
"00s",
"90's",
"bayer filter",
"color",
"driver",
"image",
"nostalgia",
"usb",
"user space",
"webcam"
] | For those of us who are a little older, the 90s seem like they were just a few years ago. The younger folks might think that the 90s were ancient history though, and they might be right as we’ve been hearing more bands like Pearl Jam and The Offspring playing on the classic rock stations lately. Another example of how ... | 45 | 16 | [
{
"comment_id": "6638701",
"author": "Michael Black",
"timestamp": "2023-05-03T20:12:59",
"content": "I have webcams, but never used one other than to try it. I don’t get the appeal.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6638711",
"author":... | 1,760,372,312.978177 | ||
https://hackaday.com/2023/05/03/op-amp-challenge-reliable-peak-power-measurement/ | Op-Amp Challenge: Reliable Peak Power Measurement | Jenny List | [
"contests",
"hardware"
] | [
"Op Amp Challenge",
"op-amp",
"peak detector",
"sample and hold"
] | As part of our Op-Amp Challenge we’re seeing a wide diversity of entries showcasing the seemingly endless capabilities of these extremely versatile parts. Another one comes from [Joseph Thomas], who when faced with the need to measure the properties of an automotive spark plug, came up with
a precision peak detector
to... | 15 | 7 | [
{
"comment_id": "6638696",
"author": "Miroslav Kisacanin",
"timestamp": "2023-05-03T20:03:49",
"content": "Aside form “complaining” about terminology (this is not peak power or peak energy measurement, this is peak voltage measurement gizmo :)), why do you need 3 OpAmpsYou can probably get most of w... | 1,760,372,313.029932 | ||
https://hackaday.com/2023/05/02/nasas-curiosity-mars-rover-gets-a-major-software-upgrade/ | NASA’s Curiosity Mars Rover Gets A Major Software Upgrade | Maya Posch | [
"News",
"Space"
] | [
"curiosity rover",
"mars",
"nasa",
"space"
] | Although the Curiosity rover has been well out of the reach of human hands since it touched down on Mars’ surface in 2012, this doesn’t mean that it isn’t getting constant upgrades. Via its communication link with Earth it receives regular firmware updates, with the most
recent one
being the largest one since 2016. In ... | 21 | 7 | [
{
"comment_id": "6638430",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-05-02T23:32:17",
"content": "I hope they will be able to back out of the update if necessary.B^)I wonder how much Spyware Google has put in this update?",
"parent_id": null,
"depth": 1,
"repli... | 1,760,372,313.251534 | ||
https://hackaday.com/2023/05/02/electroosmotic-haptics-for-more-tactile-touch-devices/ | Electroosmotic Haptics For More Tactile Touch Devices | Navarre Bartz | [
"hardware",
"Multitouch Hacks"
] | [
"haptics",
"tactile feedback",
"touch"
] | If you’re like us, one of the appeals of retro tech is the tactile feedback you get from real buttons. Researchers at Carnegie Mellon have developed a new method for
bringing haptic feedback to touchscreen devices
.
Using an array of miniaturized electroosmotic pumps, the current prototype devices offer 5 mm of displac... | 18 | 8 | [
{
"comment_id": "6638373",
"author": "Foldi-One",
"timestamp": "2023-05-02T20:32:55",
"content": "Now this is a fascinating idea. Not exactly what I was expecting for ‘tactile touch’, but I can’t really think of a better description. I was just expecting it to be more like the haptic feed back thing... | 1,760,372,313.184659 | ||
https://hackaday.com/2023/05/02/hackaday-prize-2023-eye-tracking-on-a-budget/ | Hackaday Prize 2023: Eye Tracking On A Budget | Donald Papp | [
"The Hackaday Prize",
"Wearable Hacks"
] | [
"2023 Hackaday Prize",
"endoscope",
"eye tracking",
"opencv",
"USB camera"
] | There is a lot to be learned from the experience of building something functional, and even better if doing so doesn’t break the bank. [Sergej Stoetzer]’s
20€ DIY-Eyetracker
aims to be an educational process that covers everything from hardware to functional software in an accessible way.
Hardware based on an economica... | 4 | 2 | [
{
"comment_id": "6638369",
"author": "Sword",
"timestamp": "2023-05-02T20:15:08",
"content": "That is really cool. I would love to have an eye mouse",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6638423",
"author": "The Commenter Formerly Known As R... | 1,760,372,313.493594 | ||
https://hackaday.com/2023/05/02/fet-fun-endeavors-together/ | FET: Fun Endeavors Together | Arya Voronova | [
"Hackaday Columns",
"Parts",
"Slider"
] | [
"circuits",
"fet",
"learning",
"level shifting",
"parts",
"transistor"
] | Last time, we’ve looked over FET basics, details, nuances and caveats. Basics aren’t all there is to FETs, however – let’s go through real-world uses, in all their wonderful variety! I want to show you a bunch of cool circuits where a friendly FET, specifically a MOSFET, can help you – and, along the way, I’d also like... | 42 | 11 | [
{
"comment_id": "6638339",
"author": "Michael Black",
"timestamp": "2023-05-02T17:31:24",
"content": "If I see “fet”, I read “jfet”. That’s the default. Use them in oscillators, as attenuators, rf preamps.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "663... | 1,760,372,313.577791 | ||
https://hackaday.com/2023/05/02/op-amp-challenge-an-ultra-cheap-ph-sensor-amplifier/ | Op Amp Challenge: An Ultra-Cheap PH Sensor Amplifier | Jenny List | [
"contests",
"hardware"
] | [
"instrumentation amp",
"Op Amp Challenge",
"op-amp",
"pH meter"
] | It’s rare in 2023 for an instrument to be entirely analog, instead it’s more normal for a front-end to feed the analog-to-digital converter (ADC) in a microcontroller. Typically the front-end will do the job of transforming whatever the output range of the sensor is, and present it to the microcontroller in whatever ra... | 19 | 7 | [
{
"comment_id": "6638313",
"author": "Manfred",
"timestamp": "2023-05-02T15:47:46",
"content": "I have a book from school with all the standard OP applications.PID, P, I, D and all kinds of amplifiers e.g.That is nothing to enter a contest with.BUT if someone draws an operational amplifier as a squa... | 1,760,372,313.451151 | ||
https://hackaday.com/2023/05/02/getting-ready-for-act-2-of-the-great-american-eclipse/ | Getting Ready For Act 2 Of The Great American Eclipse | Dan Maloney | [
"Current Events",
"Featured",
"Interest",
"News",
"Science",
"Slider"
] | [
"eclipse",
"planning",
"total eclipse"
] | It seems like only yesterday that the “Great American Eclipse” swept from coast to coast, and for those who were lucky enough to watch it from along the path of totality, it was a true life experience. No natural phenomenon can compete with the beauty of a total solar eclipse, and if there’s one thing I heard more than... | 41 | 16 | [
{
"comment_id": "6638280",
"author": "Andy Pugh",
"timestamp": "2023-05-02T14:18:29",
"content": "“Astronomically speaking, total eclipses are not that rare”This might not be true. They are not all that uncommon on Earth, but may be very uncommon elsewhere in the Universe, as it requires just the ri... | 1,760,372,313.715103 | ||
https://hackaday.com/2023/05/02/modern-components-enable-cheap-and-compact-nixie-driver-circuit/ | Modern Components Enable Cheap And Compact Nixie Driver Circuit | Robin Kearey | [
"hardware",
"High Voltage"
] | [
"CH32V003",
"IN-12b",
"Nixie driver",
"nixie tubes"
] | Nixie tubes can add some retro flair to any project, but they can also complicate your electronics quite a bit: after all, you need to generate a voltage high enough to ignite the tube and then switch that between ten separate display segments. Traditionalists may want to stick with chunky mains transformers and those ... | 14 | 7 | [
{
"comment_id": "6638214",
"author": "some guy",
"timestamp": "2023-05-02T11:04:03",
"content": "s/CNLorh/CNLohr/g",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6638216",
"author": "Elliot Williams",
"timestamp": "2023-05-02T11:13:49",
... | 1,760,372,313.628116 | ||
https://hackaday.com/2023/05/02/machine-vision-automates-trainspotting-with-unique-full-length-portraits/ | Machine Vision Automates Trainspotting With Unique Full-Length Portraits | Dan Maloney | [
"digital cameras hacks",
"Transportation Hacks"
] | [
"Go",
"machine vision",
"railfan",
"railway",
"raspberry pi",
"train",
"trainspotting",
"video4linux"
] | As hobbies go, trainspotting is just as valid a choice as any — we don’t judge. But it does present certain logistical challenges, such as having to be in visual range of a train to be able to spot it. There’s also the fact that trains are very large objects, and they tend to move very fast. What’s a railfan to do?
If ... | 11 | 8 | [
{
"comment_id": "6638206",
"author": "ono",
"timestamp": "2023-05-02T10:34:04",
"content": "Perfect for the networked Russian spycams installed in Poland near the Ukrainian border, which spy the western weapons deliveries.",
"parent_id": null,
"depth": 1,
"replies": [
{
"co... | 1,760,372,313.763966 | ||
https://hackaday.com/2023/05/01/recreating-a-non-standard-usb-cable/ | Recreating A Non-Standard USB Cable | Jenny List | [
"Repair Hacks"
] | [
"cable plug",
"usb",
"USB cable"
] | USB is a well-defined standard for which there are a reasonable array of connectors for product designers to use in whatever their application is. Which of course means that so many manufacturers have resorted to using proprietary connectors, probably to ensure that replacements are suitably overpriced. [Teaching Tech]... | 31 | 7 | [
{
"comment_id": "6638159",
"author": "Mog",
"timestamp": "2023-05-02T05:41:45",
"content": "Yikes, that hot glue burn – someone should tell [Teaching Tech] that’s not what’s meant by “beeping out” a cable! ;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "663... | 1,760,372,313.831911 | ||
https://hackaday.com/2023/05/01/esas-jupiter-bound-probe-hits-antenna-snag/ | ESA’s Jupiter-bound Probe Hits Antenna Snag | Tom Nardi | [
"News",
"Space"
] | [
"antenna",
"jammed",
"Jupiter",
"probe"
] | While the few minutes it takes for a spacecraft’s booster rocket to claw its way out of Earth’s gravity well might be the most obviously hazardous period of the mission, an incredible number of things still need to go right before anyone on the ground can truly relax. Space is about as unforgiving an environment as you... | 27 | 5 | [
{
"comment_id": "6638132",
"author": "CityZen",
"timestamp": "2023-05-02T02:09:23",
"content": "Just ask ChatGPT for an answer.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6638136",
"author": "RobHeffo",
"timestamp": "2023-05-02T02:39:43",... | 1,760,372,313.89938 | ||
https://hackaday.com/2023/05/01/squeeze-over-a-minute-of-movie-filming-onto-a-35mm-still-cartridge/ | Squeeze Over A Minute Of Movie Filming Onto A 35mm Still Cartridge | Jenny List | [
"classic hacks"
] | [
"3.5mm",
"8mm",
"movie camera"
] | There’s an allure to shooting film in the digital age which isn’t quite satisfied by digital filters for your smartphone camera. Aside from the technical challenge of working with a medium limited in sensitivity compared to its electronic replacement there are aesthetic reasons for wanting to shoot with particular lens... | 14 | 10 | [
{
"comment_id": "6638109",
"author": "w",
"timestamp": "2023-05-01T23:24:53",
"content": "I have 800′ of PLUS-X that would enjoy this. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6638111",
"author": "David Walker",
"timestamp": "2023-05-01T23:45:... | 1,760,372,314.029968 | ||
https://hackaday.com/2023/05/01/cocoa-press-chocolate-3d-printer-offered-as-diy-kit/ | Cocoa Press Chocolate 3D Printer Offered As DIY Kit | Tom Nardi | [
"3d Printer hacks"
] | [
"chocolate 3d printer",
"Cocoa Press",
"extruder",
"food printer",
"paste extruder"
] | Ultimately, the goal of Hackaday is to shine a light on the incredible projects coming from the hardware hacking community. In the vast majority of cases, said projects end up being one-off creations — a clever solution that solved a specific problem for the creator, which may or may not be directly applicable to anyon... | 19 | 8 | [
{
"comment_id": "6638074",
"author": "Ergotron",
"timestamp": "2023-05-01T21:36:15",
"content": "Been very cool to see this printer develop over the years, wish them luck. Seems to be this could print all kinds of pastes, so should be interesting to see what kind of aps people can come up with once ... | 1,760,372,313.961094 | ||
https://hackaday.com/2023/05/01/op-amp-challenge-an-op-amp-buck-regulator/ | Op Amp Challenge: An Op-Amp Buck Regulator | Jenny List | [
"contests",
"hardware"
] | [
"buck converter",
"Op Amp Challenge",
"op-amp",
"pwm"
] | Switching regulators have delivered such convenience and efficiency compared to their linear siblings, that it’s now becoming rare to see an old-style three-terminal regulator. Modern designs have integrated to such an extent that for many of us the inner workings remain something of a mystery. It’s still possible to m... | 10 | 5 | [
{
"comment_id": "6638041",
"author": "Murray",
"timestamp": "2023-05-01T19:48:31",
"content": "I’m not sure those flyback diodes are required. The op amp would have a puh pull output, allowing for a low performance synchronous converter.",
"parent_id": null,
"depth": 1,
"replies": [
... | 1,760,372,314.284966 | ||
https://hackaday.com/2023/05/01/my-great-great-grandad-the-engineer-who-invented-a-coffee-pot/ | My Great-Great-Grandad, The Engineer Who Invented A Coffee Pot | Jenny List | [
"Hackaday Columns",
"home hacks",
"Slider"
] | [
"coffee",
"napier",
"vacuum coffee pot"
] | In the study of genealogy it’s common to find people who will go to great lengths involving tenuous cross-links to establish royalty or famous figures such as George Washington or William Shakespeare in their family tree. There’s no royal blood and little in the way of fame to be found in my family tree, but I do have ... | 34 | 18 | [
{
"comment_id": "6637965",
"author": "some guy",
"timestamp": "2023-05-01T17:07:47",
"content": "But did he knew about RFC 2324?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6637970",
"author": "Manfred",
"timestamp": "2023-05-01T17:15:52",
"cont... | 1,760,372,314.66866 | ||
https://hackaday.com/2023/05/01/hackaday-prize-2023-explore-the-basics-of-neuroscience-with-this-electronic-neuron/ | Hackaday Prize 2023: Explore The Basics Of Neuroscience With This Electronic Neuron | Robin Kearey | [
"Artificial Intelligence",
"Science",
"The Hackaday Prize"
] | [
"2023 Hackaday Prize",
"artificial neural network",
"neuron",
"neuroscience",
"op amps"
] | Brains are the most complex systems in the universe, but their basic building blocks are surprisingly simple — the complexity arises from billions of neurons, axons and synapses working together. Simulating an entire brain therefore requires vast computing resources, but if it’s just a few cells you’re interested in, y... | 2 | 1 | [
{
"comment_id": "6637977",
"author": "Artenz",
"timestamp": "2023-05-01T17:21:09",
"content": "> Brains are the most complex systems in the universe,They may be the most complex systems in this tiny little corner of the universe….",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,372,314.233079 | ||
https://hackaday.com/2023/05/01/your-guide-to-using-amazons-sidewalk-network-for-the-internet-of-things/ | Your Guide To Using Amazon’s Sidewalk Network For The Internet Of Things | Lewin Day | [
"Featured",
"Interest",
"internet hacks",
"Original Art",
"Slider"
] | [
"amazon",
"Amazon Alexa",
"Amazon Sidewalk",
"internet of things"
] | As the Internet of Things became a mainstream reality, it raised an interesting point about connectivity. We quickly learned it wasn’t ideal to have every light bulb, toaster, and kettle buzzing away on our main WiFi networks. Nor was it practical to sign up for a cellular data plan for every tracker tag or remote sens... | 61 | 23 | [
{
"comment_id": "6637909",
"author": "Ostracus",
"timestamp": "2023-05-01T14:26:45",
"content": "I think it’s the not getting permission that was problematic. Things like Apple airtags demonstrates the power of decentralized nodes working together.",
"parent_id": null,
"depth": 1,
"repli... | 1,760,372,314.58994 | ||
https://hackaday.com/2023/05/01/patent-spat-leaves-dji-owing-textron-279m/ | Patent Spat Leaves DJI Owing Textron $279M | Navarre Bartz | [
"drone hacks",
"News"
] | [
"DJI",
"drone",
"helicopter",
"intellectual property",
"patent law",
"patents",
"Textron"
] | Patents are the murky waters where technical jargon and legalese meet, and in this vast grey area of interpretation,
DJI now owes Textron $279M
.
At issue in the case
were two patents issued to Textron (#
8,014,909
and #
9,162,752
) regarding aircraft control systems for relative positioning to other vehicles and autom... | 46 | 16 | [
{
"comment_id": "6637863",
"author": "cyberteque",
"timestamp": "2023-05-01T11:14:28",
"content": "so where does Ardupilot stand??those 2 patents would seem to cover any kind of AHRS system",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6638354",
"au... | 1,760,372,314.37597 | ||
https://hackaday.com/2023/05/01/hinges-live-inside-3d-prints/ | Hinges Live Inside 3D Prints | Bryan Cockfield | [
"3d Printer hacks",
"Parts"
] | [
"3d printing",
"design",
"hinge",
"kerf bending",
"living hinge",
"materials",
"plastic",
"stress"
] | Since desktop 3D printers have become more common, we’ve seen dramatic shifts in all kinds of areas such as rapid prototyping, antique restoration, mass production of consumer goods, or even household repairs that might not have been possible otherwise. There are a lot of unique manufacturing methods that can be explor... | 5 | 3 | [
{
"comment_id": "6637853",
"author": "paulvdh",
"timestamp": "2023-05-01T10:07:16",
"content": "It’s a nice overview, some remarks:The toothed look (@01:57) does not work at all. The only thing it does is remove the “thicker parts” from the hinge parts. that it seems more flexible is because the thi... | 1,760,372,314.717195 | ||
https://hackaday.com/2023/04/30/liquid-neural-networks-do-more-with-less/ | Liquid Neural Networks Do More With Less | Joseph Long | [
"Artificial Intelligence"
] | [
"artifical intelligence",
"artificial neural network",
"biomorphic",
"efficiency"
] | [Ramin Hasani] and colleague [Mathias Lechner] have been working with a new type of Artificial Neural Network called Liquid Neural Networks, and
presented some of the exciting results at a recent TEDxMIT
.
Liquid neural networks are inspired by biological neurons to implement algorithms that remain adaptable even after... | 14 | 7 | [
{
"comment_id": "6637824",
"author": "Artenz",
"timestamp": "2023-05-01T08:09:39",
"content": "How do you watch 1 million pixels with 19 neurons?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6637832",
"author": "Dude",
"timestamp": "2023-05... | 1,760,372,314.774973 | ||
https://hackaday.com/2023/04/30/high-voltage-power-supply-from-usb/ | High Voltage Power Supply From USB | Bryan Cockfield | [
"High Voltage"
] | [
"300V",
"dc",
"electrophoresis",
"electrowetting",
"high voltage",
"Isolation",
"measurement",
"power supply",
"safety",
"usb"
] | Those who work in different spaces may have different definitions of the term “high voltage”. For someone working on the GPIO pins of a Raspberry Pi it might be as little as 5 volts, someone working on a Tesla coil might consider that to be around 20 kV, and an electrical line worker might not reference something as HV... | 14 | 4 | [
{
"comment_id": "6637785",
"author": "tequals0",
"timestamp": "2023-05-01T03:27:37",
"content": "an update: I had to resort to PIO to read the ADC…see the blog if you are interested!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6637793",
"author": ... | 1,760,372,314.830373 | ||
https://hackaday.com/2023/04/30/hackaday-links-april-30-2023/ | Hackaday Links: April 30, 2023 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links"
] | [
"binary",
"decimal",
"faa",
"hackaday links",
"retrocomputer",
"SpaceX",
"starship",
"troy ounce",
"UAP",
"UFO",
"VCF",
"vintage",
"WAGO",
"wire nuts"
] | Cloudy with a chance of concrete? The “success” of last week’s brief but eventful Starship launch has apparently raised some regulatory eyebrows, with the Federal Aviation Administration
launching an investigation
into the destruction wrought by the mighty rocket. And it’s not just the hapless Dodge Caravan that they’r... | 17 | 8 | [
{
"comment_id": "6637740",
"author": "Eric",
"timestamp": "2023-04-30T23:26:58",
"content": "“**Due to the overwhelming response from our friends at Silver Cymbal and the ever-increasing popularity of our 221 products, we need to catch our breath for a moment and pause our free sample program tempor... | 1,760,372,314.88701 | ||
https://hackaday.com/2023/04/29/hackaday-prize-2023-tiny-rc-aircraft-built-using-foam-and-esp12/ | Hackaday Prize 2023: Tiny RC Aircraft Built Using Foam And ESP12 | Lewin Day | [
"The Hackaday Prize",
"Toy Hacks"
] | [
"2023 Hackaday Prize",
"motor controller",
"radio control",
"radio control plane",
"rc",
"rc plane",
"stem"
] | Once upon a time, a radio controlled plane was a hefty and complex thing. They required small nitro engines, support equipment, and relatively heavy RC electronics. Times have changed since then,
as this lightweight RC build from [Ravi Butani] demonstrates.
The body of the plane is lightweight foam, and can be assemble... | 13 | 6 | [
{
"comment_id": "6637294",
"author": "sword",
"timestamp": "2023-04-30T01:22:04",
"content": "Really cool",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6637407",
"author": "Joshua",
"timestamp": "2023-04-30T03:52:40",
"content": "Before RC planes ... | 1,760,372,314.93674 | ||
https://hackaday.com/2023/04/29/the-worlds-first-agricultural-right-to-repair-law/ | The World’s First Agricultural Right To Repair Law | Jenny List | [
"green hacks",
"News",
"Repair Hacks"
] | [
"drm",
"john deere",
"right to repair"
] | Long time readers will know that occasionally we mix up our usual subject matter with a dash of farm equipment. Usually the yellow and green variants that come from John Deere, as the agricultural manufacturer has become the poster child for all that is wrong in the fight for the right to repair. An old Deere is worth ... | 29 | 8 | [
{
"comment_id": "6637109",
"author": "Hirudinea",
"timestamp": "2023-04-29T21:55:57",
"content": "If I can’t fix it I don’t own it and if I bought it I damn well own it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6637136",
"author": "The Gambler",
... | 1,760,372,315.000206 | ||
https://hackaday.com/2023/04/29/building-a-wifi-picture-frame-with-an-eink-display/ | Building A WiFi Picture Frame With An EInk Display | Lewin Day | [
"Art",
"Microcontrollers"
] | [
"e-ink display",
"eink",
"picture frame",
"waveshare",
"wifi picture frame"
] | LCD photo frames never really caught on — by emitting light, they didn’t seamlessly blend in with a home’s decor in the way printed photos do. [Sprite_tm] decided to see if a color e-Ink screen could do any better,
and whipped up a WiFi-enabled photo frame using a Waveshare display.
The part in question is a 5.65-inch ... | 7 | 5 | [
{
"comment_id": "6636925",
"author": "Chad",
"timestamp": "2023-04-29T18:37:22",
"content": "Interesting read. I gotta try this when eink tech gets cheap or when I start seeing e readers at thrift stores lol",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "66370... | 1,760,372,315.043462 | ||
https://hackaday.com/2023/04/29/thinking-inside-the-box/ | Thinking Inside The Box | Elliot Williams | [
"News",
"Rants",
"Space"
] | [
"Artemis",
"moon",
"newsletter",
"rocket",
"SpaceX"
] | Last week, I wrote about NASA’s technology demonstrator projects,
and how they’ve been runaway successes
– both the Mars rovers and the current copter came from such experimental beginnings. I argued that letting some spirit of experimentation into an organization like NASA is probably very fruitful from time to time.
... | 144 | 12 | [
{
"comment_id": "6636805",
"author": "Dude",
"timestamp": "2023-04-29T14:07:31",
"content": ">In comparison, the other US-funded rocket run by Boeing, the SLS suffered years of delays, cost tremendous amounts of money, and has half the lift of SpaceX’s Super Heavy. But it made it to space.Gee, it’s ... | 1,760,372,315.418553 | ||
https://hackaday.com/2023/04/29/alternatives-to-pins-and-holes-for-3d-printed-assemblies/ | Alternatives To Pins And Holes For 3D Printed Assemblies | Lewin Day | [
"3d Printer hacks"
] | [
"3d print",
"3d printing",
"assembly"
] | When we have two 3D printed parts that need to fit together, many of us rely on pins and holes to locate them and fix them together. [Slant 3D] has explored some alternative ideas in this area
that may open up new avenues for your own designs.
Their first idea was to simply chamfer the pins and holes. This allows the o... | 35 | 11 | [
{
"comment_id": "6636788",
"author": "Lionel Brits",
"timestamp": "2023-04-29T12:01:47",
"content": "I personally prefer nesting-type location features like gridfinity containers use.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6636789",
"author": "Fran... | 1,760,372,315.241486 | ||
https://hackaday.com/2023/04/29/biomimetic-building-facades-to-reduce-hvac-loads/ | Biomimetic Building Facades To Reduce HVAC Loads | Navarre Bartz | [
"Science"
] | [
"architecture",
"biomimetic",
"biomimicry",
"smart window"
] | Buildings currently consume about 50% of the world’s electricity, so finding ways to reduce the loads they place on the grid can save money and reduce carbon emissions. Scientists at the University of Toronto have developed an
“optofluidic” system for tuning light
coming into a building.
The researchers devised a
biomi... | 21 | 9 | [
{
"comment_id": "6636772",
"author": "Jan Helebrant 🦁 (@jhelebrant)",
"timestamp": "2023-04-29T09:34:32",
"content": "Just curious. Isn’t the majority of electricity consumption in the future linked to heating and air conditioning? I see two themes for the future – 1) construction of buildings with... | 1,760,372,315.474334 | ||
https://hackaday.com/2023/04/28/the-nuts-and-bolts-of-nuts-and-bolts/ | The Nuts And Bolts Of Nuts And Bolts | Dan Maloney | [
"Misc Hacks"
] | [
"bolt",
"joint",
"mechanical engineering",
"nut",
"preload",
"screw",
"shear",
"tension",
"thread",
"torque"
] | If you’re a mechanical engineer, the material covered in
this video on the basics of bolted joints
probably won’t cover any new ground. On the other hand, if you aren’t a mechanical engineer but still need to bring a little of that discipline to your projects, there’s a lot to learn here.
If there’s one takeaway lesson... | 23 | 6 | [
{
"comment_id": "6636746",
"author": "Severe Tire Damage",
"timestamp": "2023-04-29T05:20:25",
"content": "An excellent mechanical engineer explained to me once that it isn’t the shearing of the bolt that is the issue (which I always had thought), but the clamping force of the bolt holding the two p... | 1,760,372,317.434934 | ||
https://hackaday.com/2023/04/28/building-a-receiver-with-the-progrock2-programmable-crystal/ | Building A Receiver With The ProgRock2 Programmable Crystal | Lewin Day | [
"Radio Hacks"
] | [
"amateur radio",
"crystal",
"ham radio",
"radio"
] | Crystals are key to a lot of radio designs. They act as a stable frequency source and ensure you’re listening to (or transmitting on) exactly the right bit of the radio spectrum. [Q26] decided to use the ProgRock2 “programmable crystal”
to build a receiver that could tune multiple frequencies without the usual traditio... | 11 | 5 | [
{
"comment_id": "6636728",
"author": "Bruce Perens K6BP",
"timestamp": "2023-04-29T02:17:14",
"content": "Most folks making new designs would just use the Sis5315A chip directly. These are nice for retrofit of a vintage radio where design is not necessary. Be aware of the technical limitations of mo... | 1,760,372,317.086647 | ||
https://hackaday.com/2023/04/28/soldering-station-designed-around-batteries/ | Soldering Station Designed Around Batteries | Bryan Cockfield | [
"Tool Hacks"
] | [
"3d printed",
"battery",
"battery pack",
"controller",
"freecad",
"power tools",
"soldering",
"tools"
] | Companies now are looking to secure revenue streams by sneakily locking customers into as many recurring services as possible. Subscription software, OS ecosystems, music streaming, and even food delivery companies all want to lock consumers in to these types of services. Battery-operated power tools are no different a... | 19 | 7 | [
{
"comment_id": "6636703",
"author": "Clyde",
"timestamp": "2023-04-28T23:37:33",
"content": "Before you’re going to repurpose your not-cheap Milwaukee M18 batteries for hobby projects, PLEASE remember that the BMS of the M18 bricks does NOT monitor the cells for overdischarge, and if you’re careles... | 1,760,372,317.542424 | ||
https://hackaday.com/2023/04/28/auto-tape-wrapping-machine-is-amazing-for-cable-management/ | Auto Tape Wrapping Machine Is Amazing For Cable Management | Lewin Day | [
"Tool Hacks"
] | [
"cable wrapping",
"cables",
"looms",
"wiring loom",
"wrapping cables"
] | If you’ve dived under the hood of any car built in the last 40 years, you’ve likely noticed the bundles of neatly-wrapped cables making up the car’s wiring loom.
[The Q] has built a tool for handling jobs like this yourself.
The build starts with a pair of sprockets linked up with bicycle chain, and mounted to a wooden... | 15 | 8 | [
{
"comment_id": "6636646",
"author": "UnreliableMongoose",
"timestamp": "2023-04-28T20:25:40",
"content": "Wow, I love this! Amazing video work too. So much effort to make such a silly yet useful thing.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6636813"... | 1,760,372,317.238191 | ||
https://hackaday.com/2023/04/28/led-matrix-displays-get-new-look-thanks-to-smd-stencils/ | LED Matrix Displays Get New Look Thanks To SMD Stencils | Dan Maloney | [
"LED Hacks"
] | [
"adobe",
"illustrator",
"led",
"matrix",
"smd",
"solder",
"stencil"
] | Even if surface-mount skills aren’t in your repertoire, chances are pretty good that most of us are at least familiar with SMD stencils. These paper-thin laser-cut steel sheets are a handy way to apply a schmear of solder paste to the pads of a PCB before component placement and reflowing. But are stencils good for any... | 26 | 4 | [
{
"comment_id": "6636618",
"author": "DougM",
"timestamp": "2023-04-28T18:50:55",
"content": "Stencil hacking! Brilliant – I never would have thought of that.You win the Internet for the day.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6636625",
"autho... | 1,760,372,317.723538 | ||
https://hackaday.com/2023/04/28/rising-to-the-occasion-a-brief-history-of-crewed-high-altitude-balloons/ | Rising To The Occasion: A Brief History Of Crewed High Altitude Balloons | Al Williams | [
"History",
"Interest",
"Space"
] | [
"balloon",
"space"
] | Piccard inspects an instrument on his balloon (Image: Bundesarchiv, Bild 102-10382 /
CC-BY-SA 3.0
)
We think of human flight as a relatively modern affair, with a few claims to the first airplane all around the turn of the last century. But people flew much earlier than that by using hot air balloons as well as gas-fil... | 11 | 6 | [
{
"comment_id": "6636593",
"author": "Michael Black",
"timestamp": "2023-04-28T17:19:26",
"content": "The Explorer 2, there was a dramatic painting in National Geographic, one crew member having difficulty getting out of the capsule with his parachute on.",
"parent_id": null,
"depth": 1,
... | 1,760,372,317.488572 | ||
https://hackaday.com/2023/04/28/hackaday-podcast-216-fets-fax-and-electrochemical-fab/ | Hackaday Podcast 216: FETs, Fax, And Electrochemical Fab | Elliot Williams | [
"Hackaday Columns",
"Podcasts"
] | [
"Hackaday Podcast"
] | In this week’s podcast, non-brothers Elliot Williams and Al Williams talk about our favorite hacks of the week. Elliot’s got analog on the brain, courtesy of the ongoing Op Amp Contest, and Al is all about the retrocomputers, from a thrift-store treasure to an old, but still incredibly serviceable, voice synthesizer. B... | 3 | 3 | [
{
"comment_id": "6636631",
"author": "Dude",
"timestamp": "2023-04-28T19:30:23",
"content": "One caveat to the op-amp power supply rejection ratio: it’s frequency dependent. You’ll still want to add low-ESR decoupling capacitors close to the power input to the chip to eat up any fast transients.Op-a... | 1,760,372,317.323857 | ||
https://hackaday.com/2023/04/28/transistors-that-grow-on-trees/ | Transistors That Grow On Trees | Bryan Cockfield | [
"Science"
] | [
"cellulose",
"conductivity",
"electronics",
"lignin",
"sustainability",
"transistor",
"wood"
] | Modern technology is riddled with innovations that were initially inspired by the natural world. Velcro, bullet trains, airplanes, solar panels, and many other technologies took inspiration from nature to become what they are today. While some of these examples might seem like obvious places to look, scientists are pee... | 16 | 6 | [
{
"comment_id": "6636557",
"author": "Cyna",
"timestamp": "2023-04-28T15:30:56",
"content": "Now we just need transparent aluminium.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6636637",
"author": "Stanley Hirsh",
"timestamp": "2023-04-28T... | 1,760,372,317.376831 | ||
https://hackaday.com/2023/04/30/a-microneedle-vaccine-patch-printer-for-thermostable-mrna-vaccines/ | A Microneedle Vaccine Patch Printer For Thermostable MRNA Vaccines | Maya Posch | [
"Medical Hacks",
"Science"
] | [
"microneedle",
"microneedle patch"
] | What if you could get vaccinated with the ease of putting on an adhesive bandage? This is the promise of microneedle patches (MNP), which are essentially what they sound like. These would also have uses in diagnostics that might one day obliviate the need for drawing blood. The one major issue with MNPs is their manufa... | 95 | 13 | [
{
"comment_id": "6637702",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-04-30T20:13:49",
"content": "Why would I want to become a GMO (genetically modified organism) by having foreign mRNA injected into me?For decades parents have been demanding non-GMO foods for consumption,I... | 1,760,372,317.663816 | ||
https://hackaday.com/2023/04/30/embed-hardware-into-3d-prints-but-not-in-the-way-youre-thinking/ | Embed Hardware Into 3D Prints, But Not In The Way You’re Thinking | Donald Papp | [
"3d Printer hacks",
"Tool Hacks"
] | [
"3d printing",
"efficiency",
"fasteners",
"hardware",
"packaging",
"robotic"
] | [Christopher Helmke] is doing fantastic work in DIY systems for handling small hardware like fasteners, and that includes
robotic placement of hardware into 3D prints
. Usually this means dropping nuts into parts in mid-print so that the hardware is captive, but that’s not really the story here.
The really inventive pa... | 9 | 5 | [
{
"comment_id": "6637677",
"author": "Foldi-One",
"timestamp": "2023-04-30T18:32:48",
"content": "Do really like the concept behind the mounting hardware held captive in a pocket on the part rather than a bag. Should be relatively often possible to do as well, as more often than not there is lots of... | 1,760,372,317.280927 | ||
https://hackaday.com/2023/04/30/add-a-little-quindar-to-your-comms-for-that-apollo-era-sound/ | Add A Little Quindar To Your Comms For That Apollo-Era Sound | Dan Maloney | [
"classic hacks",
"History"
] | [
"74xx123",
"apollo",
"beep",
"boop",
"FSK",
"in-band signaling",
"intro",
"outro",
"quindar",
"xr-2206"
] | If there’s one thing that ties together all the media coming out of the Apollo era, it’s probably the iconic Quindar tones. These quarter-second beeps served as control tones for the globe-spanning communications network needed to talk to the Apollo astronauts, and any attempt to recreate the Apollo-era sound would be ... | 9 | 6 | [
{
"comment_id": "6637622",
"author": "dianea",
"timestamp": "2023-04-30T14:29:23",
"content": "Thank you for this * beep! *",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6637627",
"author": "MEDCOM",
"timestamp": "2023-04-30T14:37:00",
"content": ... | 1,760,372,317.772043 | ||
https://hackaday.com/2023/04/30/when-your-smart-light-switches-stop-working-build-your-own/ | When Your Smart Light Switches Stop Working, Build Your Own | Lewin Day | [
"home hacks"
] | [
"home",
"home automation",
"IoT",
"light switch"
] | If you want smart light switches in your house, you can buy from any one of hundreds of manufacturers. [Brian Boyle] had kitted out his home with TP Link devices, but after a few years of use, he found they all suddenly failed within a few months of each other. Decrying the state of things,
he set about building his ow... | 14 | 10 | [
{
"comment_id": "6637596",
"author": "NdK",
"timestamp": "2023-04-30T12:36:15",
"content": "Tried something similar with my DomoSwitch (https://github.com/NdK73/HomeAutomation/tree/master/domoswitch) but never got to packaging :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
... | 1,760,372,317.843805 | ||
https://hackaday.com/2023/04/30/usb-borescope-lets-doctors-hone-intubation-skills-on-the-cheap/ | USB Borescope Lets Doctors Hone Intubation Skills On The Cheap | Dan Maloney | [
"Medical Hacks"
] | [
"borescope",
"endotracheal",
"intubation",
"laryngoscope",
"medical",
"usb"
] | One of the most critical skills in emergency medicine is airway management. Without a patent airway, a patient has about four minutes to live, so doctors and paramedics put a huge amount of effort into honing their intubation skills. They have to be able to insert an endotracheal tube quickly and efficiently, without d... | 8 | 7 | [
{
"comment_id": "6637605",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-04-30T13:12:40",
"content": "At first I thought this was going to be about placing an NG (naso-gastric) tube post pyloric (into the duodenum).",
"parent_id": null,
"depth": 1,
"replies": []
}... | 1,760,372,317.888695 | ||
https://hackaday.com/2023/04/29/rp2040-gets-intellikeys-keyboard-up-and-running/ | RP2040 Gets Intellikeys Keyboard Up And Running | Lewin Day | [
"Peripherals Hacks"
] | [
"accessibility",
"intellikeys",
"keyboard"
] | The Spectronic Intellikeys was an innovative keyboard-like accessibility device that used special plastic overlays that change its functionality. While a USB version of the accessible keyboard exists, it doesn’t work like a normal HID device, so it’s not plug and play as you might expect. It’s also no longer in product... | 7 | 6 | [
{
"comment_id": "6637458",
"author": "Dummy user",
"timestamp": "2023-04-30T05:09:57",
"content": "Probably could use webusb to upload firmware from webpage.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6643417",
"author": "Andy Shaw",
"tim... | 1,760,372,317.930308 | ||
https://hackaday.com/2023/04/29/dont-let-the-baluns-float-over-your-head/ | Don’t Let The Baluns Float Over Your Head | Bryan Cockfield | [
"Radio Hacks"
] | [
"antenna",
"balun",
"choke",
"Coax",
"common mode",
"feedline",
"high frequency",
"noise",
"radio frequency",
"RF",
"transformer",
"ugly balun"
] | Most ham radio operators will build an antenna of some sort when they first start listening or transmitting, whether it’s a simple dipole, a beam antenna like a Yagi, or even just a random wire vertical antenna. All of these will need to be connected feedline of some sort, and in the likely event you reach for some 50-... | 5 | 2 | [
{
"comment_id": "6637340",
"author": "David",
"timestamp": "2023-04-30T02:19:38",
"content": "Coiled coax makes for generally terrible baluns, and in some cases the interwinding capacitance can combine with the inductance of the coil to actually produce a series resonant circuit that is useless. At... | 1,760,372,318.215301 | ||
https://hackaday.com/2023/04/28/this-week-in-security-session-puzzling-session-keys-and-speculation/ | This Week In Security: Session Puzzling, Session Keys, And Speculation | Jonathan Bennett | [
"Hackaday Columns",
"News",
"Security Hacks"
] | [
"rdp",
"speculative execution",
"This Week in Security"
] | Last week we briefly mentioned a vulnerability in the Papercut software, and more details and a proof of concept
have been published
. The vulnerability is one known as
session puzzling
. That’s essentially where a session variable is used for multiple purposes, or gets incorrectly set. In Papercut, it was possible to ... | 7 | 4 | [
{
"comment_id": "6636578",
"author": "BT",
"timestamp": "2023-04-28T16:47:23",
"content": "Something tells me ChatGPT is going to feature quite a bit in this column in the coming months.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6636582",
"autho... | 1,760,372,318.259082 | ||
https://hackaday.com/2023/04/28/checking-out-and-reviving-a-batch-of-used-floppy-disks/ | Checking Out And Reviving A Batch Of Used Floppy Disks | Maya Posch | [
"Retrocomputing"
] | [
"3.5\" floppy disk"
] | With the last manufacturer of 3.5″ floppy disks (FDs) having shut down in 2010, those who are still using this type of storage medium for production and/or retrocomputing purposes have to increasingly rely on a dwindling stack of new old stock, or the used market. With the purported unreliability of this type of magnet... | 29 | 7 | [
{
"comment_id": "6636482",
"author": "Mike",
"timestamp": "2023-04-28T11:10:35",
"content": "Must have been one boring day to do something like that.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6636628",
"author": "lj",
"timestamp": "2023-... | 1,760,372,318.457429 | ||
https://hackaday.com/2023/04/28/the-cheap-and-available-microwave-playground/ | The Cheap And Available Microwave Playground | Jenny List | [
"Radio Hacks"
] | [
"LNB",
"microwave",
"radio"
] | There’s something of a mystique about RF construction at the higher frequencies, it’s seen as a Black Art only practiced by elite wizards. In fact, UHF and microwave RF circuitry is surprisingly simple and easy to understand, and given the ready availability of low-noise block downconverters (LNBs) for satellite TV rec... | 11 | 9 | [
{
"comment_id": "6636447",
"author": "Onetruegod",
"timestamp": "2023-04-28T08:20:31",
"content": "I literally told my son “RF is black magic” today. Maybe I’ll give it a try….",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6636460",
"author": "polprog",
... | 1,760,372,318.31036 | ||
https://hackaday.com/2023/04/27/using-an-old-smartphone-in-place-of-a-raspberry-pi/ | Using An Old Smartphone In Place Of A Raspberry Pi | Bryan Cockfield | [
"Phone Hacks"
] | [
"bootloader",
"Galaxy",
"LineageOS",
"music",
"navidrome",
"ram",
"samsung",
"server",
"smartphone",
"streaming"
] | The Raspberry Pi was a fairly revolutionary computing device when it came on the scene around a decade ago. Enough processing power to run a full Linux desktop and plenty of GPIO meant almost certain success. In the past year, though, they’ve run into some issues with their chip supplier and it’s been difficult to find... | 63 | 20 | [
{
"comment_id": "6636405",
"author": "WenChih Chen",
"timestamp": "2023-04-28T05:51:14",
"content": "It seems like He doesn’t remove the battery of android phoneso battery might become fat some day, and break back cover or front panelIf He remove the battery, He need bypass the android battery moni... | 1,760,372,318.55653 | ||
https://hackaday.com/2023/04/27/solving-the-mystery-of-the-mayan-calendars-819-count-cycle/ | Solving The Mystery Of The Mayan Calendar’s 819-Count Cycle | Maya Posch | [
"Science"
] | [
"Mayan calendar",
"Mayan history"
] | Mayan Calendar Round. (Source:
Chichen Itza
)
Despite the mysticism that often clouds the Mayan calendar in popular culture, fact remains that the calendar system in use by the Mayans was based on a system used throughout the pre-Columbian Mesoamerican societies, dating back to at least the 5th century BCE. Characteris... | 51 | 10 | [
{
"comment_id": "6636372",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-04-28T03:04:43",
"content": "“With modern day Maya still living where their ancestors once did, these discoveries help them to recover and reconnect to the parts of their history that were so brutally dest... | 1,760,372,318.945947 | ||
https://hackaday.com/2023/04/27/cheap-deburring-tool-is-game-changer-for-3d-printing/ | Cheap Deburring Tool Is Game Changer For 3D Printing | Lewin Day | [
"3d Printer hacks",
"Tool Hacks"
] | [
"3d print",
"3d printer",
"3d printing",
"deburring",
"deburring tool",
"post-processing"
] | 3D printing’s real value is that you can whip up objects in all kinds of whacky geometries with a minimum of fuss. However, there’s almost always some post-processing to do. Like many manufactured plastic objects, there are burrs, strings, and rough edges to deal with. Fussing around with a knife to remove them is a po... | 54 | 18 | [
{
"comment_id": "6636328",
"author": "Thorin",
"timestamp": "2023-04-27T23:23:35",
"content": "It’s a little more expensive, but this deburring MULTI-TOOL means you have essentially 90% of the finishing methods for 3DPrints in the palm of one hand. Use this guy all the time.https://www.amazon.com/No... | 1,760,372,318.643462 | ||
https://hackaday.com/2023/04/27/smooth-animations-slick-bar-graphs-but-no-custom-characters-on-this-16x2-oled/ | Smooth Animations, Slick Bar Graphs, But No Custom Characters On This 16×2 OLED | Dan Maloney | [
"LED Hacks"
] | [
"16x2",
"animation",
"arduino",
"display",
"oled",
"rom",
"US2066"
] | Sometimes, finding new ways to use old hardware requires awesome feats of reverse engineering, software sleight of hand, and a healthy dose of good fortune. Other times, though, it’s just as simple as reading the data sheet and paying attention to details.
Not that we’re knocking [upir]’s accomplishment with
these tric... | 7 | 3 | [
{
"comment_id": "6636308",
"author": "Gravis",
"timestamp": "2023-04-27T21:25:37",
"content": "US2066 is actually a controller chip, not a driver chip. My understanding is that drivers are used for powering things.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id... | 1,760,372,318.687802 | ||
https://hackaday.com/2023/04/27/op-amp-challenge-whats-your-monitors-delay/ | Op Amp Challenge: What’s Your Monitor’s Delay? | Jenny List | [
"hardware"
] | [
"fpga",
"monitor delay",
"Op Amp Challenge",
"op-amp"
] | In the days of CRT displays, the precise synchronization between source and display meant that the time between a video line appearing at the input and the dot writing it to the screen was constant, and very small. Today’s display technologies deliver unimaginable resolutions compared to the TV your family had in the 1... | 12 | 5 | [
{
"comment_id": "6636276",
"author": "spiritplumber",
"timestamp": "2023-04-27T19:02:25",
"content": "We have a couple of cool designs, where do we submit them?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6636287",
"author": "fiddlingjunky",
... | 1,760,372,318.733372 | ||
https://hackaday.com/2023/04/27/making-hydrogen-with-solar-energy-with-oxygen-and-heat-a-bonus/ | Making Hydrogen With Solar Energy, With Oxygen And Heat A Bonus | Lewin Day | [
"green hacks",
"Hackaday Columns",
"Science"
] | [
"green hydrogen",
"hydrogen",
"solar",
"solar hydrogen",
"solar power"
] | Hydrogen is a useful gas. Whether you want to float an airship, fuel a truck, or heat an industrial process, hydrogen can do the job. However, producing it is currently a fraught issue. While it can be produced cleanly using renewable energy, it’s often much cheaper to split it out of hydrocarbon fuels using processes ... | 66 | 15 | [
{
"comment_id": "6636247",
"author": "TG",
"timestamp": "2023-04-27T17:13:46",
"content": ">straight photovoltaic solar would be far simpler in this instance…Until it comes to the lifespan of the system and ENERGY STORAGE.",
"parent_id": null,
"depth": 1,
"replies": [
{
"co... | 1,760,372,318.855426 | ||
https://hackaday.com/2023/04/27/compressed-air-keeps-screws-moving-through-modular-production-system/ | Compressed Air Keeps Screws Moving Through Modular Production System | Dan Maloney | [
"Parts"
] | [
"bowl feeder",
"manufacturing",
"parts handling",
"Pneumatics"
] | If there’s an unsung hero of manufacturing, it’s the engineer who figures out how to handle huge numbers of small parts. It’s one thing to manually assemble something, picking each nut, bolt, and washer by hand. It’s another thing to build a machine that can do the same thing, but thousands of times in a row, ideally w... | 8 | 4 | [
{
"comment_id": "6636242",
"author": "mayhem",
"timestamp": "2023-04-27T16:54:49",
"content": "I used to work for Partylite candle corp. in the tealight department. We had 5 lines making 130 tealights per minute per line so high speed everything. the tealight cups would go into a wicker machine from... | 1,760,372,318.991291 | ||
https://hackaday.com/2023/04/27/the-modern-www-or-where-do-we-want-to-go-from-here/ | The Modern WWW, Or: Where Do We Want To Go From Here? | Maya Posch | [
"Featured",
"History",
"internet hacks",
"Slider",
"Software Development"
] | [
"web browser",
"www"
] | From the early days of ARPANET until the dawn of the World Wide Web (
WWW
), the internet was primarily the domain of researchers, teachers and students, with hobbyists running their own BBS servers you could dial into, yet not connected to the internet. Pitched in 1989 by Tim Berners-Lee while working at CERN, the WWW... | 52 | 22 | [
{
"comment_id": "6636194",
"author": "THOMAS R CHERRYHOMES",
"timestamp": "2023-04-27T14:05:02",
"content": "Gee, it’s awfully nice, that some of you are waking up to the alarm bells that we were sounding in the aughts, long after we can do something about it.",
"parent_id": null,
"depth": 1... | 1,760,372,319.088409 | ||
https://hackaday.com/2023/04/27/is-an-ads-b-receiver-the-solution-for-drone-pilots/ | Is An ADS-B Receiver The Solution For Drone Pilots? | Jenny List | [
"drone hacks"
] | [
"ads-b",
"drone",
"drone law",
"multirotor"
] | Over the years here at Hackaday, we’ve covered a range of stories about the ongoing panic surrounding drone flights. From plastic bags reported as drone incidents through to airports closed with no evidence of drones being involved, it’s clear that drone fliers are an embattled group facing a legal and aeronautical est... | 45 | 12 | [
{
"comment_id": "6636143",
"author": "Satadru Pramanik",
"timestamp": "2023-04-27T11:24:19",
"content": "Why not just equip drones with TCAS? Should drones also be required to transmit ADSB information?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6636147"... | 1,760,372,319.216382 | ||
https://hackaday.com/2023/04/27/versatile-dram-board-adds-memory-to-any-heathkit-h8-variant/ | Versatile DRAM Board Adds Memory To Any Heathkit H8 Variant | Robin Kearey | [
"Retrocomputing"
] | [
"8080",
"8085",
"dram",
"dram controller",
"heathkit h8",
"z80"
] | Ask anyone to name a first-generation home computer from the 1970s, and they’ll probably mention the likes of the Altair 8800 and IMSAI 8080. But those iconic machines weren’t the only options available to hobbyists back in the day: Heathkit, famous for its extensive range of electronic devices sold in kit form, jumped... | 6 | 3 | [
{
"comment_id": "6636163",
"author": "Steven-X",
"timestamp": "2023-04-27T12:25:06",
"content": "I remember those heathkits. Like the Edmund Scientific caatalog of that era, the Heathkit catalog was nerd porn. But i also had a paper route budget. Once i got a job that paid real money, I chose a 75 F... | 1,760,372,319.135844 | ||
https://hackaday.com/2023/04/26/leonardo-da-vincis-visualization-of-gravity-as-a-form-of-acceleration/ | Leonardo Da Vinci’s Visualization Of Gravity As A Form Of Acceleration | Maya Posch | [
"Science"
] | [
"gravity",
"leonardo da vinci"
] | Although we take a lot of scientific knowledge for granted today, each of the basics – whether it be about light, gravity, mass or the shape of the Earth – had to be theorized and experimentally verified. In the case of gravity, as far back as around 500 BCE the Ionian Greek philosopher Heraclitus theorized on the bala... | 20 | 5 | [
{
"comment_id": "6636107",
"author": "Tyler D Becker",
"timestamp": "2023-04-27T06:46:21",
"content": "If you spin them fast enough do they fly upwards?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6636708",
"author": "Haywood J. Blome",
"t... | 1,760,372,319.485298 | ||
https://hackaday.com/2023/04/26/tactile-feedback-in-vr-no-cumbersome-gloves-or-motors-required/ | Tactile Feedback In VR, No Cumbersome Gloves Or Motors Required | Donald Papp | [
"Virtual Reality",
"Wearable Hacks"
] | [
"haptics",
"tactile feedback",
"touch",
"vr"
] | This clever research from the University of Chicago’s Human Computer Integration Lab demonstrates a fascinating way to
let users “feel” objects in VR, without anything getting in the way of using one’s hands and fingers normally
. Certainly, the picture here shows hands with a device attached to them, but look closely ... | 9 | 6 | [
{
"comment_id": "6636084",
"author": "WereCatf",
"timestamp": "2023-04-27T04:08:26",
"content": "As neat as the idea is, I, for one, don’t want to don one single item on me unless they can first make the headsets far less of a nuisance. I mean, the headsets currently are so much of an uncomfortable ... | 1,760,372,319.278067 | ||
https://hackaday.com/2023/04/26/vcf-east-2023-adrian-black-on-keeping-retro-alive/ | VCF East 2023: Adrian Black On Keeping Retro Alive | Tom Nardi | [
"Interviews",
"Retrocomputing"
] | [
"VCF East 2023",
"Vintage Computer Festival East"
] | While roaming the halls of Vintage Computer Festival East 2023,
we ran into [Adrian Black]
, who was eager to talk about the importance of classic computing in his own life and how his experience hosting the YouTube channel
Adrian’s Digital Basement
has impacted him these last few years.
On his channel, [Adrian] spends... | 3 | 3 | [
{
"comment_id": "6636059",
"author": "sqelch",
"timestamp": "2023-04-27T00:40:27",
"content": "Gotta say, it is wonderful that Adrian is getting recognized more. He is an excellent presenter and teacher for lack of a better term. I watch his stuff all the time. I get to experience all sorts of compu... | 1,760,372,319.325336 | ||
https://hackaday.com/2023/04/26/printed-gas-can-accessories-make-refueling-a-little-neater/ | Printed Gas Can Accessories Make Refueling A Little Neater | Dan Maloney | [
"home hacks"
] | [
"gasoline",
"ice",
"internal combustion",
"Nozzle"
] | No matter what your position is on internal combustion engines, it’s pretty safe to assume everyone is on the same page regarding wasting fossil fuels: it’s a bad thing. And nothing is as frustrating as spilling even a drop of the precious stuff before you even get a chance to burn it.
Unfortunately, the design of gas ... | 45 | 14 | [
{
"comment_id": "6636010",
"author": "Patrick T.",
"timestamp": "2023-04-26T20:37:56",
"content": "Wow there bud, speak for yourselves in the United States, we have no issues of the kind in Canada, where a lot of these cans are made (Scepter). We have no legislation governing the pouring apparatus o... | 1,760,372,319.569798 | ||
https://hackaday.com/2023/04/26/hackaday-prize-2023-the-assistive-tech-challenge-starts-now/ | Hackaday Prize 2023: The Assistive Tech Challenge Starts Now | Tom Nardi | [
"contests",
"The Hackaday Prize"
] | [
"2023 Hackaday Prize",
"assistive device",
"assistive technology"
] | We’d all love to change the world and make it a better place, but let’s be honest…that’s a pretty tall order. Even the best of ideas, implemented perfectly, can only do so much globally. But that doesn’t mean the individual can’t make a difference — you just need to think on a different scale. If improving
everyone’s
l... | 1 | 1 | [
{
"comment_id": "6636533",
"author": "Chad Leaman",
"timestamp": "2023-04-28T14:01:25",
"content": "If people are looking for ideas, Makers Making Change’s forum has lots of requests from people with disabilities looking for solutions:https://makersmakingchange.com/forum/forums/design-challenges/",
... | 1,760,372,319.61907 | ||
https://hackaday.com/2023/04/26/smoke-some-weeds-lasers-could-make-herbicide-obsolete/ | Smoke Some Weeds: Lasers Could Make Herbicide Obsolete | Lewin Day | [
"Engineering",
"green hacks",
"Interest",
"Original Art",
"Science"
] | [
"agriculture",
"chemical",
"chemicals",
"crops",
"farm",
"farmer",
"farming",
"herbicide",
"laser",
"lasers",
"weeding",
"weeds"
] | We’ve all tangled with unwelcome plant life at one point or another. Whether crabgrass infested your lawn, or you were put on weeding duty in your grandfather’s rose patch, you’ll know they’re a pain to remove, and a pain to prevent. For farmers, just imagine the same problem, but scaled up to cover thousands of acres.... | 53 | 21 | [
{
"comment_id": "6635954",
"author": "TG",
"timestamp": "2023-04-26T17:12:11",
"content": "Reducing the amount of atrazine and glyphosate in our bodies is of tantamount importance. I am skeptical but I sure hope this thing works",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,372,319.712519 | ||
https://hackaday.com/2023/04/26/nuke-your-own-uranium-glass-castings-in-the-microwave/ | Nuke Your Own Uranium Glass Castings In The Microwave | Dan Maloney | [
"classic hacks"
] | [
"casting",
"glass",
"glassmaking",
"kiln",
"microwave",
"molding",
"plaster",
"silicone",
"U3O8",
"uranium"
] | Fair warning: if you’re going to try to
mold uranium glass in a microwave kiln
, you might want to not later use the oven for preparing food. Just a thought.
A little spicy…
Granted, uranium glass isn’t as dangerous as it might sound. Especially considering its creepy green glow, which almost seems to be somehow self-p... | 20 | 5 | [
{
"comment_id": "6635944",
"author": "L",
"timestamp": "2023-04-26T16:14:46",
"content": "“Not THAT radioactive”. Yeah yeah. I heard this about an old camera lens that is supposed to be “not THAT radioactive|. In the 60s Japanese firms (Pentax in particular) used Thorium doped glass because it has a... | 1,760,372,319.774488 | ||
https://hackaday.com/2023/04/26/parametric-design-with-tinkercad/ | Parametric Design With Tinkercad | Al Williams | [
"3d Printer hacks",
"Hackaday Columns",
"Slider"
] | [
"3D modelling",
"parametric design",
"programming",
"tinkercad"
] | Tinkercad is like the hamburger helper of 3D design. You hate to admit you use it, and you know you should put in more effort, but — darn it — it’s easy, and it tastes pretty good. While I use a number of CAD programs for serious work, sometimes, when I just want a little widget like a flange for my laser cutter’s exha... | 32 | 7 | [
{
"comment_id": "6635927",
"author": "Bob",
"timestamp": "2023-04-26T14:22:41",
"content": "The only reason I use TinkerCAD and sticking with it for now, is because it’s not parametric. My head doesn’t allow me to work in reverse. I know other software applications can create much more powerful 3D r... | 1,760,372,319.854456 | ||
https://hackaday.com/2023/04/26/the-goalie-mask-reenvisioned/ | The Goalie Mask, Reenvisioned | Bryan Cockfield | [
"Games"
] | [
"dyneema",
"fiber",
"frame",
"goalie",
"hockey",
"mask",
"sports",
"thread"
] | The goalie mask, at least the retro-styled fiberglass types from the 60s and 70s, hasn’t been used in hockey for about 50 years — it’s instead made many more appearances in horror movies than on ice rinks. Since then, though, there’s been very little innovation surrounding the goalie mask even though there’s much more... | 12 | 5 | [
{
"comment_id": "6635942",
"author": "craig",
"timestamp": "2023-04-26T15:57:06",
"content": "This plays like a pitch on an episode of Shark Tank.Visibility is not a problem that needs to be solved. batting helmets (for baseball), lacrosse helmets, American football and everything else has used the... | 1,760,372,319.900234 | ||
https://hackaday.com/2023/04/26/vectrex-light-pen-works-without-a-raster/ | Vectrex Light Pen Works Without A Raster | Jenny List | [
"Retrocomputing"
] | [
"Light Pen",
"vector display",
"vectrex"
] | Sometimes the simplest of projects end up revealing the most interesting of things, as for example is the case with [Ryo Mukai]’s
light pen for the Vectrex console
. It’s an extremely simple device using an integrated light sensor with built-in Schmitt trigger, but for us the magic isn’t in the pen itself but in discov... | 6 | 3 | [
{
"comment_id": "6635895",
"author": "CRJEEA",
"timestamp": "2023-04-26T10:34:56",
"content": "I wonder if a variation of this trick could be employed to work with a modern monitor, so you could have a light pen, without having to emulate a raster scan. Perhaps you could get away with effectively sl... | 1,760,372,319.942555 | ||
https://hackaday.com/2023/04/25/bass-reactive-leds-for-your-car/ | Bass Reactive LEDs For Your Car | Abe Connelly | [
"car hacks"
] | [
"electret microphone",
"ESP32",
"fft",
"neopixel",
"rotary encoder",
"spectrogram"
] | [Stephen Carey] wanted to spruce up his car with sound reactive LEDs but couldn’t quite find the right project online. Instead, he wound up assembling a custom
bass reactive LED display
using an ESP32.
The entirety of the build is minimal, consisting of a GY-MAX4466 electret microphone module, a KY-040 encoder for some... | 32 | 9 | [
{
"comment_id": "6635867",
"author": "Stuart Longland",
"timestamp": "2023-04-26T07:09:53",
"content": "… because everyone needs a distracting visual light show at their feet while they’re driving.I get everyone’s not the same, and many concentrate better with some music going than in total silence ... | 1,760,372,320.019218 | ||
https://hackaday.com/2023/04/25/reading-ptolemys-treatise-on-the-meteoroscope-on-palimpsests-after-centuries-of-recovery-attempts/ | Reading Ptolemy’s Treatise On The Meteoroscope On Palimpsests After Centuries Of Recovery Attempts | Maya Posch | [
"Science"
] | [
"meteoroscope",
"palimpsest",
"Ptolemy"
] | During the Middle Ages much of Ancient Greek and Roman scientific, legal and similarly significant texts written on parchment were commonly erased, mostly because of the high cost of new parchment and the little regard given to these secular texts. Although recovery attempts of the remaining faint outlines of the old t... | 12 | 5 | [
{
"comment_id": "6635841",
"author": "Ostracus",
"timestamp": "2023-04-26T02:41:59",
"content": "Interesting how mass production makes historic preservation possible.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6635849",
"author": "Andrew",
... | 1,760,372,320.125797 | ||
https://hackaday.com/2023/04/25/insulin-pump-teardown-shows-one-motor-does-many-jobs/ | Insulin Pump Teardown Shows One Motor Does Many Jobs | Donald Papp | [
"Medical Hacks",
"Teardown"
] | [
"insulin pump",
"teardown"
] | Modern insulin pumps are self-contained devices that attach to a user’s skin via an adhesive patch, and are responsible for administering insulin as needed. Curious as to what was inside, [Ido Roseman]
tore down an Omnipod Dash and took some pictures
showing what was inside.
A single motor handles inserting the cannula... | 14 | 6 | [
{
"comment_id": "6635821",
"author": "Jake",
"timestamp": "2023-04-25T23:12:04",
"content": "There’s a great teardown video from 2016 herehttps://www.youtube.com/watch?v=e2MQUUkubgsthat goes into more detail and figures out how the mechanism works.",
"parent_id": null,
"depth": 1,
"repli... | 1,760,372,320.074209 | ||
https://hackaday.com/2023/04/25/very-slow-movie-player-avoids-e-ink-ghosting-with-machine-learning/ | Very Slow Movie Player Avoids E-Ink Ghosting With Machine Learning | Donald Papp | [
"Software Hacks",
"Video Hacks"
] | [
"alien",
"e-ink",
"GaN",
"machine learning",
"very slow movie player"
] | [mat kelcey] was so impressed and inspired by the concept of a very slow movie player (which is the playing of a movie at a slow rate on a kind of DIY photo frame) that he
created his own with a high-resolution e-ink display
. It shows high definition frames from
Alien
(1979) at a rate of about one frame every 200 seco... | 2 | 2 | [
{
"comment_id": "6635775",
"author": "Ostracus",
"timestamp": "2023-04-25T20:11:34",
"content": "I suspect paint drying: the movie would have been a better candidate.https://www.imdb.com/title/tt1559353/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6680018",... | 1,760,372,320.39337 | ||
https://hackaday.com/2023/04/25/op-amp-contest-a-slice-of-the-70s/ | Op Amp Contest: A Slice Of The ’70s | Jenny List | [
"classic hacks",
"contests"
] | [
"Op Amp Challenge",
"op-amp",
"phase shift oscillator",
"timer"
] | The 1970s was a great time to be an electronics hobbyist, as a whole new world of analogue integrated circuits was coming down in price while new devices would appear to tempt the would-be constructor. Magazines and project books were full of simple circuits to do all manner of fun things, including many synthesizers a... | 7 | 5 | [
{
"comment_id": "6635827",
"author": "william payne (@william45994166)",
"timestamp": "2023-04-25T23:53:43",
"content": "Ramzi Yousef Casio watch op amp implementation eclipses all other op amp projects?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6635832",... | 1,760,372,320.348124 | ||
https://hackaday.com/2023/04/25/retrotechtacular-putting-pictures-on-the-wire-in-the-1930s/ | Retrotechtacular: Putting Pictures On The Wire In The 1930s | Dan Maloney | [
"Hackaday Columns",
"Retrotechtacular",
"Slider"
] | [
"facsimile",
"fax",
"neon",
"news",
"photocell",
"retrotechtacular",
"telephone"
] | Remember fax machines? They used to be all the rage, and to be honest it was pretty cool to be able to send images back and forth over telephone lines. By the early 2000s, pretty much everyone had some kind of fax capability, whether thanks to a dedicated fax machine, a fax modem, or an all-in-one printer. But then alo... | 52 | 15 | [
{
"comment_id": "6635731",
"author": "alialiali",
"timestamp": "2023-04-25T17:37:47",
"content": "> Encoding a message on a string wrapped around a drum and then randomizing the string by balling it up seems like a low-tech way to exfiltrate information under hostile conditions, as long as your reci... | 1,760,372,320.651224 | ||
https://hackaday.com/2023/04/25/low-cost-rf-power-sensor-gets-all-the-details-right/ | Low-Cost RF Power Sensor Gets All The Details Right | Dan Maloney | [
"Radio Hacks"
] | [
"amateur radio",
"ham",
"homebrew",
"power sensor",
"QO-100",
"RF",
"schottky",
"wattmeter"
] | Dirty little secret time: although amateur radio operators talk a good game about relishing the technical challenge of building their own radio equipment, what’s really behind all the DIY gear is the fact that the really good stuff is just too expensive to buy.
A case in point is
this super-low-cost RF power sensor
tha... | 25 | 11 | [
{
"comment_id": "6635714",
"author": "Tito Figueiredo",
"timestamp": "2023-04-25T16:17:49",
"content": "Scottish Diode :) at 6:33m",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6635718",
"author": "MAC",
"timestamp": "2023-04-25T16:32:23",
"conten... | 1,760,372,320.457377 | ||
https://hackaday.com/2023/04/25/fet-the-friendly-efficient-transistor/ | FET: The Friendly Efficient Transistor | Arya Voronova | [
"Featured",
"how-to",
"Interest",
"Parts",
"Slider"
] | [
"fet",
"field effect transistor",
"mosfet",
"transistor"
] | If you ever work with a circuit that controls a decent amount of current, you will often encounter a FET – a Field-Effect Transistor. Whether you want to control a couple of powerful LEDs, switch a USB device on and off, or drive a motor, somewhere in the picture, there’s usually a FET doing the heavy lifting. You migh... | 57 | 17 | [
{
"comment_id": "6635690",
"author": "Andrew Wilson",
"timestamp": "2023-04-25T14:59:57",
"content": "I initially struggled with the concepts of open and closed. In the end I thought of it as a tap rather than a switch",
"parent_id": null,
"depth": 1,
"replies": [
{
"commen... | 1,760,372,320.886581 | ||
https://hackaday.com/2023/04/25/3d-print-for-extreme-temperatures-but-only-if-youre-nasa/ | 3D Print For Extreme Temperatures (But Only If You’re NASA) | Jenny List | [
"3d Printer hacks",
"Science"
] | [
"3d printing",
"alloy",
"laser sintering",
"nasa"
] | At the level pursued by many Hackaday readers, the advent of affordable 3D printing has revolutionised prototyping, as long as the resolution of a desktop printer is adequate and the part can be made in a thermoplastic or resin, it can be in your hands without too long a wait. The same has happened at a much higher lev... | 23 | 7 | [
{
"comment_id": "6635656",
"author": "CRJEEA",
"timestamp": "2023-04-25T11:31:34",
"content": "van -> can",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6635674",
"author": "Prowler50mil",
"timestamp": "2023-04-25T13:46:51",
"content"... | 1,760,372,320.783927 | ||
https://hackaday.com/2023/04/25/make-your-esp32-talk-like-its-the-80s-again/ | Make Your ESP32 Talk Like It’s The 80s Again | Donald Papp | [
"how-to",
"Microcontrollers"
] | [
"80's",
"phonemes",
"speech synthesis",
"talkie"
] | 80s-era electronic speech certainly has a certain retro appeal to it, but it can sometimes be a useful data output method since it can be implemented on very little hardware. [luc] demonstrates this with a
talking thermometer project
that requires no display and no special hardware to communicate temperatures to a user... | 21 | 11 | [
{
"comment_id": "6635633",
"author": "dendad",
"timestamp": "2023-04-25T08:05:54",
"content": "I like it :)Years ago I played with one of those phoneme chips driven by a 6511AQ running FORTH.This looks like a good thing as I have a friend with low sight.",
"parent_id": null,
"depth": 1,
... | 1,760,372,320.722897 | ||
https://hackaday.com/2023/04/24/half-crystal-radio-half-regenerative-radio/ | Half Crystal Radio, Half Regenerative Radio | Jenny List | [
"classic hacks",
"Radio Hacks"
] | [
"crystal radio",
"radio",
"Regeneration"
] | A rite of passage in decades past for the electronics experimenter was the crystal radio. Using very few components and a long wire antenna, such a radio could pick up AM stations with no batteries needed, something important in the days when a zinc-carbon cell cost a lot of pocket money. The days of AM broadcasting ma... | 11 | 6 | [
{
"comment_id": "6635645",
"author": "daveboltman",
"timestamp": "2023-04-25T09:55:58",
"content": "Interesting! Made lots of crystal radios as a youngun. Always thought VHF was not an option, although I imagined an FM detector was possible, just that there weren’t any FM stations at low enough freq... | 1,760,372,320.936814 | ||
https://hackaday.com/2023/04/24/testing-part-stiffness-no-need-to-re-invent-the-bending-rig/ | Testing Part Stiffness? No Need To Re-invent The Bending Rig | Donald Papp | [
"3d Printer hacks",
"Science"
] | [
"3d printed",
"measurement",
"stiffness",
"Young's modulus"
] | If one is serious about testing the stiffness of materials or parts, there’s nothing quite like doing your own tests. And thanks to [JanTec]’s
3-Point Bending Test rig
, there’s no need to reinvent the wheel should one wish to do so.
The dial caliper can be mounted to a fixed height, thanks to a section of 3030 T-slot ... | 3 | 2 | [
{
"comment_id": "6635600",
"author": "J",
"timestamp": "2023-04-25T02:21:15",
"content": "I’m reminded of the words my materials teacher drilled into us…‘harder, stronger, more brittle, less ductile less tough’",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6... | 1,760,372,320.980183 |
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