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|---|---|---|---|---|---|---|---|---|---|---|---|
https://hackaday.com/2021/11/05/the-linux-x86-journey-to-main/ | The Linux X86 Journey To Main() | Al Williams | [
"Software Development",
"Software Hacks"
] | [
"assembly",
"elaboration",
"linux",
"main",
"startup",
"x86"
] | Have you ever had a program crash before your
main
function executes? it is rare, but it can happen. When it does, you need to understand what happens behind the scenes between the time the operating system starts your program and your first line of code in
main
executes. Luckily [Patrick Horgan] has
a tutorial about t... | 7 | 3 | [
{
"comment_id": "6397037",
"author": "Ghent the Slicer",
"timestamp": "2021-11-06T02:33:08",
"content": "The info is gcc/glibc specific if you are using a different compiler/runtime library the mechanics are not the same. Much of this is dictated by the glibc ABI.The ELF loader is a piece of code th... | 1,760,372,896.258017 | ||
https://hackaday.com/2021/11/05/automation-allows-you-to-leaf-your-plants-alone/ | Automation Allows You To Leaf Your Plants Alone | Stephen Ogier | [
"home hacks"
] | [
"automated plant care",
"automatic plant watering",
"automation",
"ESP32",
"home automation",
"homeassistant",
"plants",
"soil moisture sensor",
"temperature sensor"
] | The greatest threat to a potted plant stems from its owner’s forgetfulness, but [Sasa Karanovic] has created an automation system that will keep his plants from getting too thirsty. Over the past year [Sasa] has been documenting an elegant system for monitoring and watering plants which has now blossomed into a
fully a... | 11 | 6 | [
{
"comment_id": "6397025",
"author": "steelman",
"timestamp": "2021-11-06T01:35:25",
"content": "Interesting. Alas, there seems to be no information about the actuator part of the system: pump and valves. Electronics is hard to design and build, but the right actuators are hard hard to find and sou... | 1,760,372,896.115012 | ||
https://hackaday.com/2021/11/05/pulp-molding-a-use-for-cardboard-confetti/ | Pulp-Molding: A Use For Cardboard Confetti | Kristina Panos | [
"green hacks",
"how-to"
] | [
"cardboard",
"paper pulp",
"PVA glue",
"rice paste"
] | We’re pretty sure that we don’t have to tell you how great cardboard is. You probably sing the praises yourself and use it for everything from a work surface protective layer to a prototype of your next amazing build. But if you still find yourself flush with cardboard even after all that, here’s one thing you can do w... | 21 | 10 | [
{
"comment_id": "6396996",
"author": "CRJEEA",
"timestamp": "2021-11-05T20:30:19",
"content": "Next up, 3D printers that print using cardboard pulp.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6397009",
"author": "Ostracus",
"timestamp": "... | 1,760,372,896.361559 | ||
https://hackaday.com/2021/11/04/curious-marc-takes-on-sewing-machine-repair/ | Curious Marc Takes On Sewing Machine Repair | Adam Fabio | [
"home hacks"
] | [
"CuriousMarc",
"repair",
"sew",
"sewing",
"sewing machine"
] | Even the most talented engineers can be stymied by simple repair projects. In this case,
repairing a broken sewing machine has [CuriousMarc] all tangled up.
[Marc] is probably best known as a part of the team who
managed to restore and boot up an apollo guidance computer
, but he’s worked with
plenty of other vintage m... | 29 | 12 | [
{
"comment_id": "6396711",
"author": "Ren",
"timestamp": "2021-11-04T15:25:04",
"content": "“The machine would boot up fine, but when attempting to sew, it would make a bit of noise, then beep and display “The safety device has been activated”.”The store where my wife bought hers, corrects anyone th... | 1,760,372,896.17699 | ||
https://hackaday.com/2021/11/04/weird-als-monster-battlestation-is-now-just-a-reasonably-fast-pc/ | Weird Al’s Monster Battlestation Is Now Just A Reasonably Fast PC | Chris Wilkinson | [
"Featured",
"Interest",
"Original Art",
"Retrocomputing"
] | [
"modem waxing",
"pentium",
"weird al"
] | Wanna be hackers? Code crackers? Slackers. If the vintage computing community ever chooses an official anthem, count my vote for
It’s All About The Pentiums
by “Weird Al” Yankovic. More than twenty years after its release, this track and its
music video (with Drew Carey!)
are still just as enjoyable as they ever were, ... | 92 | 36 | [
{
"comment_id": "6396674",
"author": "Ren",
"timestamp": "2021-11-04T14:10:03",
"content": "I shamefully relinquish my Nerd credentials…I had never heard of that Weird Al song…(sigh!)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6396772",
"author":... | 1,760,372,896.567492 | ||
https://hackaday.com/2021/11/04/mach-20-in-a-wind-tunnel-yes-its-rocket-science/ | Mach 20 In A Wind Tunnel: Yes, It’s Rocket Science | Ryan Flowers | [
"hardware",
"Misc Hacks",
"Space"
] | [
"Bernoulli's principle",
"helium",
"hypersonic wind tunnel",
"rocket science",
"wind tunnel"
] | Hypersonic speeds are defined by those exceeding Mach 5, and lately there’s been a lot of buzz about unmanned hypersonic vehicles making test flights. Vehicles returning from orbital flight also travel at hypersonic speeds as they do their best to transition back to the terrestrial realm. Before anything leaves ground ... | 5 | 4 | [
{
"comment_id": "6396655",
"author": "cyberteque",
"timestamp": "2021-11-04T12:57:33",
"content": "there is a Scientific American amateur scientist article on building a super sonic wind “tunnel”the test chamber is about 50mm, the wind velocity was basically a 44 gallon drum pumped down to near vacu... | 1,760,372,895.993704 | ||
https://hackaday.com/2021/11/04/focus-flower-motivates-by-squirting-water-in-your-face/ | Focus Flower Motivates By Squirting Water In Your Face | Kristina Panos | [
"Arduino Hacks"
] | [
"arduino",
"arduino nano",
"motivation",
"negative reinforcement",
"pomodoro",
"solenoid",
"the pomodoro technique"
] | When you need to get some tasks done and are short on attention, it’s hard to beat a timer. But whenever you do, it feels pretty darn good. The problem is that when you don’t finish in time, what’s the punishment? There are no consequences baked into the Pomodoro Technique other than good ol’ guilt. Wouldn’t it be bett... | 4 | 3 | [
{
"comment_id": "6396667",
"author": "Dean Drover",
"timestamp": "2021-11-04T13:28:45",
"content": "Negative reinforcement is not punishment; it’s the removal of a painful stimulus. Like, let’s say you hate rain so, so much that you keep an umbrella open constantly in any kind of weather.",
"p... | 1,760,372,896.214114 | ||
https://hackaday.com/2021/11/03/vintage-computers-with-a-real-turbo/ | Vintage Computers With A Real Turbo | Bryan Cockfield | [
"Retrocomputing"
] | [
"apple II",
"clock",
"cpu",
"emulator",
"fpga",
"retrocomputing",
"speed",
"Teensy 4.1",
"turbo"
] | In prior centuries, it was common practice to tie the operation of a program to a computer’s clock speed. As computers got faster and faster, the programs tied to that slower clock speed sometimes had trouble running. To patch the issue temporarily, some computers in the early 90s included a “TURBO” button which actual... | 42 | 10 | [
{
"comment_id": "6396573",
"author": "John",
"timestamp": "2021-11-04T05:41:35",
"content": "That’s an amazing idea! Definitely a why didn’t anyone think of this before, type moment. Great job!Now I find my self wondering why we’re constantly having to upgrade motherboards when upgrading CPUs. Why c... | 1,760,372,896.070428 | ||
https://hackaday.com/2021/11/03/more-software-defined-radio-projects-using-dragonos/ | More Software-Defined Radio Projects Using DragonOS | Bryan Cockfield | [
"Radio Hacks"
] | [
"debian",
"detection",
"dragonos",
"frequency",
"grafana",
"influxdb",
"linux",
"logging",
"RTL-SDR",
"sdr",
"sdr4space.lite",
"software-defined radio",
"spectrum"
] | DragonOS, a Debian-based Linux distribution specifically packaged for software-defined radio functionality, roared onto the wavelengths during the beginnings of the various pandemic lockdowns last year. Since then [Aaron], the creator of the OS, has been busy adding features to the distribution as well as creating plen... | 14 | 9 | [
{
"comment_id": "6396625",
"author": "Mike",
"timestamp": "2021-11-04T10:11:54",
"content": "Its not Debian based, its based on Ubuntu.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6396760",
"author": "Tim",
"timestamp": "2021-11-04T19:07:4... | 1,760,372,896.30399 | ||
https://hackaday.com/2021/11/03/hacking-the-mekamon-robot-to-add-new-capabilities/ | Hacking The Mekamon Robot To Add New Capabilities | Lewin Day | [
"Robots Hacks"
] | [
"mekamon",
"Raspberry Pi 3",
"robot"
] | The Mekamon from Reach Robotics is a neat thing, a robot controlled by a phone app that walks on four legs. [Wes Freeman] decided to hack the platform, giving it a sensor package and enabling some basic autonomous behaviours
in the process.
[Wes] started out by using a packet sniffer to figure out the command system fo... | 6 | 4 | [
{
"comment_id": "6396520",
"author": "CRJEEA",
"timestamp": "2021-11-03T23:48:23",
"content": "It’s a spider puppy. (: aww.Seriously though, pretty cool project.No doubt it’s got room to expand.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6396535",
... | 1,760,372,895.95198 | ||
https://hackaday.com/2021/11/03/building-a-heavy-duty-log-splitter-one-piece-at-a-time/ | Building A Heavy-Duty Log Splitter, One Piece At A Time | Tom Nardi | [
"Tool Hacks"
] | [
"hydraulics",
"Log splitter",
"scrap metal",
"woodworking"
] | With temperatures dropping in the Northern Hemisphere, this is the time of year when many people start processing firewood for the coming winter months. For the city folks, that means chopping a tree into logs, and then splitting those logs into something small enough to fit in your wood stove. You can do it all with h... | 9 | 5 | [
{
"comment_id": "6396490",
"author": "Saabman",
"timestamp": "2021-11-03T21:43:41",
"content": "I was look at these log splitters and dream of owning one and this is a nice specimen. but the wood they seem to be splitting is significantly softer than what we get around here.A bit of red gum or yello... | 1,760,372,896.615396 | ||
https://hackaday.com/2021/11/03/fluidized-bed-in-a-pringles-can-paints-parts-inside-and-out/ | Fluidized Bed In A Pringles Can Paints Parts Inside And Out | Adam Zeloof | [
"Tool Hacks"
] | [
"fluidized bed",
"powder coating",
"pringles"
] | Powder coating is a wonderful way to apply a smooth, colored surface to a part, whether for aesthetic reasons or corrosion protection. Traditionally, powder is applied via a air gun that sprays it towards a part while giving the grains an electrostatic charge. The part to be coated (generally metal) is hanging on a rac... | 12 | 5 | [
{
"comment_id": "6396502",
"author": "BobH",
"timestamp": "2021-11-03T22:22:03",
"content": "Been using the air gun version for about 10 years. It is kind of a pain to clean up after each use, but much less of a pain than a conventional wet paint gun. I still find myself using a rattle can for very ... | 1,760,372,896.657938 | ||
https://hackaday.com/2021/11/03/keep-calm-and-hack-on-the-philosophy-of-calm-technology/ | Keep Calm And Hack On: The Philosophy Of Calm Technology | Michael Shaub | [
"Hackaday Columns",
"Interest",
"Original Art",
"Slider"
] | [
"Calm Technologies",
"design"
] | So much smart-tech is really kind of dumb. Gadgets intended to simplify our lives turn out to complicate them. It often takes too many “clicks” to accomplish simple tasks, and they end up demanding our attention. Our “better mousetraps” end up kludgy messes that are brittle instead of elegant and robust.
The answer mig... | 44 | 16 | [
{
"comment_id": "6396415",
"author": "Andrew",
"timestamp": "2021-11-03T17:28:15",
"content": "This reminds me of the Weatherball in Flint, Michigan. It’s a huge sphere on top of a downtown bank that is lit up every night, and visible throughout a lot of the city. If it glows red, tomorrow will be w... | 1,760,372,897.182114 | ||
https://hackaday.com/2021/11/03/here-are-the-ten-finalists-for-the-hackaday-prize-wildcard-challenge/ | Here Are The Ten Finalists For The Hackaday Prize Wildcard Challenge | Tom Nardi | [
"contests",
"The Hackaday Prize"
] | [
"2021 Hackaday Prize"
] | Each phase of the 2021 Hackaday Prize challenged designers to reimagine traditional solutions within various fields, from robotics to assistive devices. But for the Reactivate Wildcard,
the fifth and final Challenge of this year’s Prize
, this theme of
Rethink, Refresh, Rebuild
could be applied on anything the entrant ... | 0 | 0 | [] | 1,760,372,896.803257 | ||
https://hackaday.com/2021/11/03/simplify-3d-printer-wiring-with-can-bus/ | Simplify 3D Printer Wiring With CAN Bus | Dave Rowntree | [
"3d Printer hacks"
] | [
"3d printing",
"BL touch",
"can-bus"
] | [mark] had
an interesting idea when looking at all the wiring of a typical 3D printer; Use CAN Bus
. There are a lot of wires going to the extruder assembly, and with most designs this thing is flying around at quite some speed. You’ve got connections for powering the heater, fan power, four wires for the extruder moto... | 56 | 17 | [
{
"comment_id": "6396349",
"author": "Grizzly Adams",
"timestamp": "2021-11-03T15:34:47",
"content": "Duet3D’s Duet 3 ecosystem has had CAN bus for a while now, with multiple options for adding more axis motors, tool heads, and distribution of the CAN bus and power wires to multiple expansion boards... | 1,760,372,896.890997 | ||
https://hackaday.com/2021/11/03/python-ditches-the-gils-and-comes-ashore/ | Python Ditches The GILs And Comes Ashore | Matthew Carlson | [
"Hackaday Columns",
"News",
"Slider",
"Software Development"
] | [
"MULTITHREADING",
"programming",
"python",
"software"
] | The Python world has been fractured a few times before. The infamous transition from version 2 to version 3 still affects people today, and there could be a new schism in the future. [Sam Gross] proposed a
solution to drop the Global
Interrupt
Interpreter Lock (GIL)
, which would have enormous implications for many pro... | 38 | 17 | [
{
"comment_id": "6396345",
"author": "Viktor",
"timestamp": "2021-11-03T15:13:06",
"content": "And 99% of python users don’t even use threads.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6396368",
"author": "SnowMango",
"timestamp": "2021-... | 1,760,372,897.043753 | ||
https://hackaday.com/2021/11/03/autonomous-drone-dodges-obstacles-without-gps/ | Autonomous Drone Dodges Obstacles Without GPS | Ryan Flowers | [
"drone hacks"
] | [
"autonomous aircraft",
"autonomous drone",
"gps",
"Intel RealSense",
"lidar",
"opencv",
"optical flow"
] | If you’re [Nick Rehm], you want a
drone that can plan its own routes even at low altitudes with unplanned obstacles blocking its way
. (Video, embedded below.) And or course, you build it from scratch.
Why? Getting a drone that can fly a path and even return home when the battery is low, signal is lost, or on command, ... | 5 | 3 | [
{
"comment_id": "6396294",
"author": "none",
"timestamp": "2021-11-03T11:51:10",
"content": "Needs proofreading.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6396313",
"author": "Ryan Flowers",
"timestamp": "2021-11-03T12:58:35",
"c... | 1,760,372,896.930993 | ||
https://hackaday.com/2021/11/03/liberating-the-esp8266-from-its-development-board/ | Liberating The ESP8266 From Its Development Board | Tom Nardi | [
"Microcontrollers",
"Parts"
] | [
"circuit design",
"custom PCB",
"esp-12f",
"ESP8266"
] | While the ESP32 is clearly a superior piece of hardware, we think you’ll agree that the ESP8266 is just too useful not to have a dozen or so kicking around the parts bin at any given time. Cheap, easy to use, and just enough capabilities to bring your projects into the wonderful world of IoT. But if you really want to ... | 14 | 5 | [
{
"comment_id": "6396264",
"author": "zoobab",
"timestamp": "2021-11-03T09:39:54",
"content": "Liberating the ESP8266 from its proprietary wifi stack?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6396272",
"author": "vvdb.fr",
"timestamp": ... | 1,760,372,897.097302 | ||
https://hackaday.com/2021/11/02/cute-little-imac-clone-runs-macos-on-a-tiny-screen/ | Cute Little IMac Clone Runs MacOS On A Tiny Screen | Robin Kearey | [
"Mac Hacks"
] | [
"hackintosh",
"imac",
"macOS"
] | Building a Hackintosh – a non-Apple computer running MacOS – has been a favorite pastime of hackers ever since Apple made the switch from PowerPC to Intel hardware. Though usually built from commodity PC parts, some have successfully installed Apple’s OS onto various kinds of Intel-based single-board computers. [iketsj... | 6 | 3 | [
{
"comment_id": "6396357",
"author": "seth",
"timestamp": "2021-11-03T15:46:28",
"content": "It’s a nice case mod for an astonishingly-small intel motherboard. The more impressive aspect of this project is getting MacOS Monterrey (newest MacOS version) booted on such a non-standard hackintosh mother... | 1,760,372,896.972186 | ||
https://hackaday.com/2021/11/02/malamuds-general-index-research-gist-no-slap-on-the-wrist/ | Malamud’s General Index: Research Gist, No Slap On The Wrist | Kristina Panos | [
"Lifehacks",
"News"
] | [
"Aaron Swartz",
"index",
"information",
"paywall",
"text mining"
] | Tired of that unsettling feeling you get from looking for paywalled papers on that one site that shall not be named? Yeah, us too. But now there’s an alternative that should feel a little less illegal:
this new index of the world’s research papers over on the Internet Archive
.
It’s an index of words and short phrases ... | 10 | 4 | [
{
"comment_id": "6396207",
"author": "Steve L",
"timestamp": "2021-11-03T02:51:26",
"content": "Hmmm…interesting legal angle. I’ve read that removing all vowels from text actually SPEEDS UP reading and comprehension for some people…",
"parent_id": null,
"depth": 1,
"replies": []
},
{... | 1,760,372,897.226734 | ||
https://hackaday.com/2021/11/02/tiny-open-hardware-linux-sbc-hides-in-plain-sight/ | Tiny Open Hardware Linux SBC Hides In Plain Sight | Tom Nardi | [
"Security Hacks",
"The Hackaday Prize"
] | [
"2021 Hackaday Prize",
"computer security",
"covert",
"penetration testing",
"WiFiWart"
] | There was a time, not quite so long ago, when a computer was a beige box that sat on your desk. Before that, computers were big enough to double as desks, and even farther back, they took up a whole room. Today? Well today it’s complicated. Single-board computers (SBCs) like the Raspberry Pi put a full desktop experien... | 20 | 6 | [
{
"comment_id": "6396176",
"author": "Justin",
"timestamp": "2021-11-02T23:26:51",
"content": "Is it me, or does the lower board appear to have been overheated / burned, right in the middle?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6396177",
"a... | 1,760,372,898.081692 | ||
https://hackaday.com/2021/11/02/computer-vision-lets-you-skip-songs-with-a-glance/ | Computer Vision Lets You Skip Songs With A Glance | Tom Nardi | [
"Machine Learning",
"Raspberry Pi"
] | [
"computer vision",
"Face detection",
"gpio",
"mp3 player",
"opencv"
] | Have you ever wished you could control your home automation devices with nothing more than a withering stare? Well then you’re in luck, as
[Norbert Zare] has come up with a clever way of controlling an MP3 player with only your face
. Though as you might imagine, the technique could be applied to a whole range of home ... | 7 | 4 | [
{
"comment_id": "6396161",
"author": "Dan",
"timestamp": "2021-11-02T21:54:00",
"content": "Is dinner cooked yet?Oven turns off.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6396163",
"author": "Dan",
"timestamp": "2021-11-02T21:54:58",
... | 1,760,372,897.27756 | ||
https://hackaday.com/2021/11/02/flying-blind-taking-flight-simulation-to-a-new-level-in-accessibility/ | Flying Blind: Taking Flight Simulation To A New Level In Accessibility | Ryan Flowers | [
"classic hacks"
] | [
"accessibility",
"blind",
"blindness",
"flight simulator",
"screen reader",
"visually impaired"
] | Software developers [Andy Borka] and [Jason Fayre] have a love for aviation. They are also both totally blind. They’ve developed software called
Talking Flight Monitor
, and it has made flight simulation possible for anyone with impaired vision or blindness, as you can experience in
the blurry video below the break
. W... | 14 | 6 | [
{
"comment_id": "6396148",
"author": "Ren",
"timestamp": "2021-11-02T19:51:30",
"content": "“Take my love, take my land,Take me where I cannot stand.I don’t care, I’m still free,You can’t take the sky from me.”-Joss Whedonsource:https://www.lyricsondemand.com/tvthemes/fireflylyrics.html",
"paren... | 1,760,372,897.327329 | ||
https://hackaday.com/2021/11/02/how-to-get-into-cars-endurance-racing-builds/ | How To Get Into Cars: Endurance Racing Builds | Lewin Day | [
"car hacks",
"Hackaday Columns",
"Slider"
] | [
"24 hours of lemons",
"endurance",
"endurance racing",
"motor sport",
"motor sports",
"motorsport",
"motorsports"
] | Many an automotive enthusiast finds themselves at a track day eventually. Typically, this involves competing against the clock to better one’s laptimes in short sessions throughout the day. Such events are fun, but it often creates a perishing thirst for a greater level of competition.
Regularity and endurance events a... | 21 | 9 | [
{
"comment_id": "6396131",
"author": "Ale",
"timestamp": "2021-11-02T17:25:58",
"content": "The FAQ of the lemon’s site is a lot of fun ! “Don’t you have friends dumb enough to join you… ” hahahaI wonder if something like that is done in Germany, this is most probably forbidden too, I mean here is e... | 1,760,372,897.497032 | ||
https://hackaday.com/2021/11/02/hardware-project-becomes-successful-product-for-solo-developer/ | Hardware Project Becomes Successful Product For Solo Developer | Donald Papp | [
"hardware",
"Raspberry Pi"
] | [
"business",
"kvm",
"product",
"product development",
"raspberry pi",
"remote access"
] | [Michael Lynch] has been a solo developer for over three years now, and has been
carefully cataloguing his attempts at generating revenue for himself
ever since making the jump to being self-employed. Success is not just hard work; it is partly knowing when the pull the plug on an idea, and [Micheal] has been very open... | 26 | 13 | [
{
"comment_id": "6396090",
"author": "Jeremy S Cook",
"timestamp": "2021-11-02T15:33:43",
"content": "That’s awesome that he cataloged his successes and failures. I suppose we could all do a better job of that!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "63... | 1,760,372,897.731558 | ||
https://hackaday.com/2021/11/02/30-days-of-terror-the-logistics-of-launching-the-james-webb-space-telescope/ | 30 Days Of Terror: The Logistics Of Launching The James Webb Space Telescope | Dan Maloney | [
"Current Events",
"Featured",
"News",
"Slider",
"Space"
] | [
"Ariane",
"deployment",
"james webb space telescope",
"jwst",
"lanuch",
"rocket",
"space",
"telescope"
] | Back during the 2019 Superconference in Pasadena, I had the chance to go to Northrop Grumman’s Redondo Beach campus to get a look at the James Webb Space Telescope. There is the high-bay class 10,000+ cleanroom in building M8, my wife and I along with fellow space nerd Tom Nardi got a chance to look upon what is likely... | 21 | 7 | [
{
"comment_id": "6396068",
"author": "Astro Jetson",
"timestamp": "2021-11-02T14:19:31",
"content": "Cool birthday present on 18 December for the 21 million that share that birthday with my son J. Looking forward to the launch, and of the next decade stacks of photos from deep space.",
"parent... | 1,760,372,897.666016 | ||
https://hackaday.com/2021/11/02/hedgehog-gesture-sensor-built-with-cheap-time-of-flight-modules/ | Hedgehog Gesture Sensor Built With Cheap Time-of-Flight Modules | Lewin Day | [
"Misc Hacks"
] | [
"gesture",
"gesture control"
] | Time-of-flight sensors used to be expensive obscurities, capable of measuring the travel time of photons themselves and often used for tracking purposes. However, the technology is cheaper now, such that [jean.perardel] has used TOF sensors to build a useful and affordable
gesture-tracking system.
The system relies on ... | 6 | 4 | [
{
"comment_id": "6396029",
"author": "Truth",
"timestamp": "2021-11-02T11:14:02",
"content": "I’m looking forward to when the VL53L1X drop in price to that of LED’s.But the flip side of the coin will be google with mobile 3D scanners (one long diagonal strip either side of their next generation of s... | 1,760,372,897.769244 | ||
https://hackaday.com/2021/11/02/janksy-robot-paints-murals-one-dot-at-a-time/ | Janksy Robot Paints Murals One Dot At A Time | Adam Fabio | [
"Art",
"Robots Hacks"
] | [] | [Stuff Made Here] has a new shop, with a huge blank wall. A blank white wall just wouldn’t do, so rather than paint the wall himself, he designed a
robot to do it for him
. (Video, embedded below.)
The result is Janksy. A huge machine made of metal, wood, and 3D printed parts. Janksy is an ingenious design in that it h... | 22 | 10 | [
{
"comment_id": "6396006",
"author": "janci",
"timestamp": "2021-11-02T09:12:48",
"content": "The counterweight trick to balance the reactive forces is neat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6396027",
"author": "Carl Confusion",
"timestam... | 1,760,372,897.825697 | ||
https://hackaday.com/2021/11/01/modded-gba-sp-does-its-best-switch-impression/ | Modded GBA SP Does Its Best Switch Impression | Tom Nardi | [
"Games",
"Nintendo Game Boy Hacks"
] | [
"game boy advance",
"GBA SP",
"mod",
"Nintendo Switch"
] | The whole idea behind the Nintendo Switch is that the system isn’t just a handheld, but can be converted into a more traditional home game console when placed into its dock. The wireless controllers even pop off the sides so you can kick back on the couch and enjoy your big-screen gaming from a distance. Judging by how... | 4 | 2 | [
{
"comment_id": "6396005",
"author": "Will",
"timestamp": "2021-11-02T09:02:57",
"content": "Would be awesome to just replace the gba pcb with the pi zero 2 at this point. Psp, nds emulation should be smooth",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "63960... | 1,760,372,897.871039 | ||
https://hackaday.com/2021/11/01/supersonic-baseball-hitting-a-gallon-of-mayo-is-great-flow-visualization/ | Supersonic Baseball Hitting A Gallon Of Mayo Is Great Flow Visualization | Lewin Day | [
"Science"
] | [
"air cannon",
"baseball",
"baseballs",
"high speed video",
"slomo",
"slow mo",
"slow motion",
"slowmo"
] | Those of us who enjoy seeing mechanical carnage have been blessed by the rise of video sharing services and high speed cameras. Oftentimes, these slow motion videos are heavy on destruction and light on science. However, this video from [Smarter Every Day] is worth watching, purely for the fluid mechanics at play when
... | 22 | 9 | [
{
"comment_id": "6395981",
"author": "Chris Knight",
"timestamp": "2021-11-02T04:48:48",
"content": "As I said on the Youtube video, there’s a distinct need for a non-Newtonian fluid as a target. Mayo just wrong…",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id":... | 1,760,372,897.926169 | ||
https://hackaday.com/2021/11/01/waterjet-powered-speedboat-for-fun-and-research/ | Waterjet-Powered Speedboat For Fun And Research | Bryan Cockfield | [
"Robots Hacks"
] | [
"2021 Hackaday Prize",
"3d printed",
"autonomous",
"boat",
"catamaran",
"education",
"impeller",
"jet",
"platform",
"remote control",
"research",
"robotic",
"water jet"
] | There are a lot of cliches about the perils of boat ownership. “The best two days of a boat owner’s life are the day they buy their boat, and the day they sell it” immediately springs to mind, for example, but there is a loophole to an otherwise bottomless pit of boat ownership: building a small robotic speedboat inste... | 1 | 1 | [
{
"comment_id": "6395968",
"author": "The Gambler",
"timestamp": "2021-11-02T02:41:15",
"content": "neat project thanks i’ve not seen that one.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,372,897.963739 | ||
https://hackaday.com/2021/11/01/building-a-bicycle-dash-cam-with-advanced-capabilites/ | Building A Bicycle Dash Cam With Advanced Capabilites | Lewin Day | [
"Misc Hacks"
] | [
"bicycle",
"bicycle safety",
"bike",
"bike safety",
"DashCam",
"rear view camera",
"safety"
] | Riding a bicycle is a wonderful and healthy way to get around. However, just like with any other vehicle on the road, it can be useful to have a camera to record what goes on in traffic.
[Richard Audette] built just such a rig.
The original setup relies on a Raspberry Pi 3, which takes a photo every 10 seconds using th... | 15 | 7 | [
{
"comment_id": "6395889",
"author": "alex eames",
"timestamp": "2021-11-01T20:11:11",
"content": "I did one a few years back. Live blogged it for a week during development. Was quite fun. I had a small screen on the handlebars which connected to front and rear Pi zero cameras. No need for streaming... | 1,760,372,898.02026 | ||
https://hackaday.com/2021/11/01/smoothing-out-foam-parts-with-lots-of-gesso/ | Smoothing Out Foam Parts With Lots Of Gesso | Tom Nardi | [
"Misc Hacks"
] | [
"finishing",
"gesso",
"part smoothing",
"primer",
"sanding"
] | Whether you’re building a product mock-up or a lightweight enclosure, carving your parts out of hard foam is a fast way to get the job done. Unfortunately, the end result can have a bit of a rough finish; a problem if you’re looking to attract investors or get some nice shots so you can send your handiwork into Hackada... | 16 | 8 | [
{
"comment_id": "6395877",
"author": "Steven Clark",
"timestamp": "2021-11-01T19:57:10",
"content": "In cosplay circles Mod Podge is the substance of choice for sealing EVA foam so it might work here too. Although I’m guessing the flexibility would go to waste.",
"parent_id": null,
"depth":... | 1,760,372,898.142662 | ||
https://hackaday.com/2021/11/01/shall-we-play-a-game/ | Shall We Play A Game? | Mike Szczys | [
"cons"
] | [
"2021 Hackaday Remoticon",
"Hacker Trivia"
] | A game show just for hackers like you is coming to
the Hackaday Remoticon
for the first time this year. Everyone is invited to take part in Hacker Trivia on Friday November 19th at 5 pm Pacific time.
Think of this as a very specialized type of bar trivia. You’re welcome to grab some friends and form a team, or play as ... | 6 | 2 | [
{
"comment_id": "6395840",
"author": "Ren",
"timestamp": "2021-11-01T18:06:35",
"content": "“The biggest difference here is that all of the questions have been drawn up by the wonderful people who write the articles you read every day on Hackaday. To say there is a geeky flair to this is a gross und... | 1,760,372,898.223004 | ||
https://hackaday.com/2021/11/01/magnesium-where-it-comes-from-and-why-were-running-out/ | Magnesium: Where It Comes From And Why We’re Running Out | Adam Zeloof | [
"chemistry hacks",
"Current Events",
"Hackaday Columns",
"News",
"Original Art",
"Slider"
] | [
"aerospace",
"aluminum",
"auto industry",
"magnesium",
"materials science",
"supply"
] | Okay, we’re not running out. We actually have tons of the stuff. But there
is
a global supply chain crisis. Most of the world’s magnesium is processed in China and several months ago, they just… stopped. In an effort to hit energy consumption quotas, the government of the city of Yulin (where most of the country’s magn... | 94 | 17 | [
{
"comment_id": "6395811",
"author": "Viktor",
"timestamp": "2021-11-01T17:13:30",
"content": "Turns out the PV panels are not so sustainable.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395846",
"author": "Dr.McRando",
"timestamp": "2021... | 1,760,372,898.554659 | ||
https://hackaday.com/2021/11/01/retro-memory-hack-chat/ | Retro Memory Hack Chat | Dan Maloney | [
"Hackaday Columns"
] | [
"Hack Chat"
] | Join us on Wednesday, November 3 at noon Pacific for the
Retro Memory Hack Chat
with Andy Geppert!
With how cheap and easy-to-integrate modern memory chips have become, it’s easy to lose track of the fact that it wasn’t too long ago that memory was the limiting factor in most computer designs. Before the advent of sili... | 6 | 4 | [
{
"comment_id": "6395794",
"author": "Bob A.",
"timestamp": "2021-11-01T16:20:56",
"content": "My all time favorite obsolete memory type is the William’s tube, an electrostatic memory that stored bits as tiny charges on the face plate of a cathode ray tube. In the pioneer days of computing (1940’s t... | 1,760,372,898.330373 | ||
https://hackaday.com/2021/11/01/an-emulator-for-obp-the-spaceflight-computer-from-the-1960s/ | An Emulator For OBP, The Spaceflight Computer From The 1960s | Donald Papp | [
"Retrocomputing",
"Space"
] | [
"assembly",
"emulator",
"nasa",
"natural language",
"OBP",
"retrocomputing",
"vintage",
"vintage hardware"
] | [David Given] frequently dives into retrocomputing, and we don’t just mean he refurbishes old computers. We mean things like
creating a simulator and assembler for the OBP spaceflight computer
, which was used in the OAO-3 Copernicus space telescope, pictured above. Far from being a niche and forgotten piece of technol... | 9 | 5 | [
{
"comment_id": "6395763",
"author": "Zap Brannigan",
"timestamp": "2021-11-01T15:09:01",
"content": "Little known fact, Señor Given (along with John Glen) where the primary inspirations for Clint Eastwood’s character in the movie Space Cowboys.",
"parent_id": null,
"depth": 1,
"replies"... | 1,760,372,898.387455 | ||
https://hackaday.com/2021/11/01/the-pi-zero-2-w-is-the-most-efficient-pi/ | The Pi Zero 2 W Is The Most Efficient Pi | Elliot Williams | [
"Engineering",
"Featured",
"Raspberry Pi",
"Reviews",
"Slider"
] | [
"battery operated",
"new parts",
"portable raspberry pi",
"power measurement",
"Raspberry Pi Zero 2 W",
"zombie current"
] | Last week we saw the announcement of
the new Raspberry Pi Zero 2 W
, which is basically an improved quad-core version of the Pi Zero — more comparable in speed to the Pi 3B+, but in the smaller Zero form factor. One remarkable aspect of the board is the Raspberry-designed RP3A0 system-in-package, which includes the fou... | 115 | 25 | [
{
"comment_id": "6395750",
"author": "josephsleary",
"timestamp": "2021-11-01T14:13:49",
"content": "1stNice. Wish I could get one from Microcenter",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395765",
"author": "FlaxWombat",
"timestamp": ... | 1,760,372,898.930662 | ||
https://hackaday.com/2021/11/01/dc-ups-keeps-the-internet-up/ | DC UPS Keeps The Internet Up | Al Williams | [
"home hacks"
] | [
"battery",
"dc ups",
"ups"
] | We occasionally get annoyed that so much gear takes the ubiquitous “wall wart” these days. But one advantage is that the devices operate on DC voltage. [TechRally] takes advantage of this to create an
automatic DC UPS
with dual outputs to power a router and modem in the event of a power outage. You can see two videos a... | 33 | 16 | [
{
"comment_id": "6395721",
"author": "MoFoQ",
"timestamp": "2021-11-01T11:05:33",
"content": "OpenUPS or microUPS come to mind (originally existed for car computing needs)https://www.mini-box.com/micro-UPS-load-sharingPop in a few cells and viola:https://www.mini-box.com/OpenUPS2?sc=8&category=1264"... | 1,760,372,898.765066 | ||
https://hackaday.com/2021/11/01/hacking-an-obsolete-yet-modern-calculator/ | Hacking An Obsolete Yet Modern Calculator | Bryan Cockfield | [
"computer hacks",
"Retrocomputing"
] | [
"calculator",
"retro",
"texas instruments",
"ti",
"ti-84",
"ticalc.org",
"z80",
"zshell"
] | The gold standard for graphing calculators, at least in the US, are the Texas Instruments TI-84 series. Some black sheep may have other types, but largely due to standardized testing these calculators dominate the market. Also because of standardized testing, these calculators have remained essentially unchanged for de... | 7 | 4 | [
{
"comment_id": "6395715",
"author": "rpavlik",
"timestamp": "2021-11-01T10:49:29",
"content": "So annoying that new models require “jailbreaking” to run assembly code. That’s a pretty recent addition and not an improvement. On the other hand, they do also make one now that has CircuitPython integra... | 1,760,372,898.594842 | ||
https://hackaday.com/2021/10/31/cherry-pomodoro-timer-forces-you-to-follow/ | Cherry Pomodoro Timer Forces You To Follow | Kristina Panos | [
"ATtiny Hacks",
"Microcontrollers"
] | [
"attiny85",
"Digispark",
"oled screen",
"pomodoro",
"the pomodoro technique",
"time management"
] | If you have trouble staying focused and getting work done, the Pomodoro Technique of working in 25-minute intervals with 5-minute breaks is pretty hard to beat. The only problem is that it requires a lot of input from the user, and all that timer-setting can get in the way of actually getting down to business. The abso... | 13 | 4 | [
{
"comment_id": "6395697",
"author": "RobHeffo",
"timestamp": "2021-11-01T08:23:18",
"content": "I think a software solution that switches you between productive and break desktops automatically would be better with less stress on the USB ports.",
"parent_id": null,
"depth": 1,
"replies"... | 1,760,372,898.988094 | ||
https://hackaday.com/2021/10/31/building-a-kinetic-sand-art-table/ | Building A Kinetic Sand Art Table | Lewin Day | [
"home hacks"
] | [
"kinetic art",
"kinetic sand",
"kinetic sculpture",
"sand",
"sand sculpture"
] | Many of us have marveled at art installations that feature marbles quietly and ceaselessly tracing out beautiful patterns in sand. [DIY Machines] is here to show us that it’s entirely possible
to build one yourself at home!
The basic mechanism is simple enough. The table uses a Cartesian motion platform to move a magne... | 16 | 10 | [
{
"comment_id": "6395679",
"author": "mrehorst",
"timestamp": "2021-11-01T04:10:25",
"content": "If you really want easy, use an off-the-shelf 3D printer controller board, corexy belt arrangement, and Sandify to generate gcode patterns. No programming is needed. The controller thinks the table is a... | 1,760,372,899.040118 | ||
https://hackaday.com/2021/10/31/hackaday-links-october-31-2021/ | Hackaday Links: October 31, 2021 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links"
] | [
"bluetooth",
"crypto",
"dynamo",
"fabrication",
"fisher-price",
"hackaday links",
"metal buying",
"phone",
"raspberry pi",
"sputnik",
"spy radio",
"steel",
"supply chain",
"toy"
] | Global supply chain issues are beginning to hit closer to home for the hacker community, as Raspberry Pi has
announced their first-ever price increase on their flagship Pi 4
. The move essentially undoes the price drop on the 2GB version of the Pi 4 that was announced in February, and sets the price back up from $35 to... | 17 | 8 | [
{
"comment_id": "6395636",
"author": "Ren",
"timestamp": "2021-10-31T23:21:03",
"content": "Don’t forget, bed frames can be used as a source of angle iron. Some can be found curbside, and some bedding/mattress stores will let you have an old one from their pile of trade-ins.",
"parent_id": null... | 1,760,372,899.096983 | ||
https://hackaday.com/2021/10/31/extracting-data-from-smart-scale-gives-rube-goldberg-a-run-for-his-money/ | Extracting Data From Smart Scale Gives Rube Goldberg A Run For His Money | Donald Papp | [
"home hacks"
] | [
"fitness",
"ocr",
"rube goldberg",
"screen scraping",
"screenshot",
"smart scale",
"tesseract-ocr"
] | [Kevin Norman] got himself a smart body scale with the intention of logging data for his own analysis, but discovered that
extracting data from the device was anything but easy
. It turns out that the only way to access data from his scale is by viewing it in a mobile app. Screen-scraping is a time-honored method of pu... | 20 | 16 | [
{
"comment_id": "6395609",
"author": "japhethite",
"timestamp": "2021-10-31T20:36:59",
"content": "why won’t he used bluetooth and rpi or something? it is easy to get data from btle devices",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6395610",
"author":... | 1,760,372,899.157568 | ||
https://hackaday.com/2021/10/31/raspberry-pi-reads-what-it-sees-delights-children/ | Raspberry Pi Reads What It Sees, Delights Children | Donald Papp | [
"Raspberry Pi"
] | [
"eSpeak",
"ocr",
"raspberry pi",
"text to speech"
] | [Geyes30]’s Raspberry Pi project does one thing:
it finds arbitrary text in the camera’s view and reads it out loud
. Does it do so flawlessly? Not really. Was it at least effortless to put together? Also no, but it does wonderfully illustrate the process of gluing together different bits of functionality to make somet... | 13 | 6 | [
{
"comment_id": "6395574",
"author": "a Jaded Hobo",
"timestamp": "2021-10-31T17:46:13",
"content": "Could be done with an Amiga 30 years ago :p",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395644",
"author": "resident",
"timestamp": "2021... | 1,760,372,899.207108 | ||
https://hackaday.com/2021/10/31/a-builders-guide-for-the-perfect-solid-state-tesla-coil/ | A Builders Guide For The Perfect Solid-State Tesla Coil | Dave Rowntree | [
"hardware",
"Misc Hacks"
] | [
"guide",
"igbt",
"plasma",
"Solid State Tesla Coil",
"tesla coil"
] | [Zach Armstrong] presents for your viewing pleasure a simple guide to
building a solid-state Tesla coil
. The design is based around a self-resonant setup using the
UCC2742x
gate driver IC, which is used in a transformer-coupled full-wave configuration for delivering maximum power from the line input. The self-resonant... | 14 | 7 | [
{
"comment_id": "6395563",
"author": "Greg Garriss",
"timestamp": "2021-10-31T16:44:34",
"content": "Happy Halloween!! I built my first TC as a kid in the late 60s with glass plate capacitors and a couple of neon sign transformers and have helped build a dozen or so since. Time to build another one!... | 1,760,372,899.267324 | ||
https://hackaday.com/2021/10/31/dantes-inferno-arcade-reveals-your-true-fate/ | Dante’s Inferno Arcade Reveals Your True Fate | Lewin Day | [
"Games"
] | [
"arcade game",
"dante",
"dante's inferno",
"love tester"
] | Many of us are vaguely familiar with the levels of hell described in Dante’s epic poem from the 14th century, even if we’ve never visited ourselves. It’s natural to wonder in which circle of hell one might end up, but that’s a question that [scubabear’s] arcade build
seeks to answer.
The artwork is vibrant and enticing... | 6 | 2 | [
{
"comment_id": "6395538",
"author": "Ren",
"timestamp": "2021-10-31T14:24:29",
"content": "I recall the Magic Castle was featured in Bill Bixby’s TV series “The Magician”,",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395540",
"author": "Ren",
... | 1,760,372,899.318505 | ||
https://hackaday.com/2021/10/31/a-fascinating-plot-twist-as-researchers-recreate-classic-primordial-soup-experiment/ | A Fascinating Plot Twist As Researchers Recreate Classic “Primordial Soup” Experiment | Dan Maloney | [
"chemistry hacks",
"News"
] | [
"abiogenesis",
"amino acids",
"ammonia",
"borosilicate",
"catalyst",
"Chemistry",
"methane",
"Miller-Urey"
] | Science is built on reproducibility; if someone else can replicate your results, chances are pretty good that you’re looking at the truth. And there’s no statute of limitations on reproducibility; even experiments from 70 years ago are fair game for a fresh look. A great example is
this recent reboot of the 1952 Miller... | 46 | 15 | [
{
"comment_id": "6395485",
"author": "Rob Ward",
"timestamp": "2021-10-31T08:42:00",
"content": "Add in about a billion years for some form of replicating amino acid replicating itself to take off in the soup, life has begun. When it randomly starts to change (mutations) to generate the ability to g... | 1,760,372,899.449107 | ||
https://hackaday.com/2021/10/30/a-hackable-keyboard-that-even-has-screens/ | A Hackable Keyboard That Even Has Screens | Lewin Day | [
"Peripherals Hacks"
] | [
"key switch",
"key switches",
"keyboard",
"mechanical keyboard",
"oled"
] | There are a huge number of available keyboards out in the world these days, catering to all of the plainest and the most advanced desires. However, if you want something that’s
just right,
sometimes it pays to build your own.
[Zach] did just that.
One of the key features of [Zach]’s build is that it diverges away from ... | 4 | 4 | [
{
"comment_id": "6395486",
"author": "Jump cut",
"timestamp": "2021-10-31T08:48:11",
"content": "Beautiful! A certain cyberpunk lofi aesthetic that I love. I’d love it if this could be bought as a kit. Zach makes it look like this could even be assembled by a beginner custom keyboard hobbyist like m... | 1,760,372,899.357197 | ||
https://hackaday.com/2021/10/30/handwriting-robots-are-sending-snail-mail/ | Handwriting Robots Are Sending Snail Mail | Matthew Carlson | [
"3d Printer hacks"
] | [
"axidraw",
"handwriting",
"ink",
"plotter"
] | As a kid, you might remember taking a whole fistful of markers or crayons, gently lining them all up for maximum contact, mashing them into the paper, and marveling at the colorful multitude of lines. It seemed like an easy way to write many times more things with less effort. While not quite the same idea but in a sim... | 40 | 18 | [
{
"comment_id": "6395434",
"author": "anon",
"timestamp": "2021-10-31T02:25:06",
"content": "The world does not need more spam / spammers. That they are killing trees to send their spam makes it even worse.Perhaps they can pivot to something more useful, like a service that provides “hand written” ... | 1,760,372,899.726943 | ||
https://hackaday.com/2021/10/30/this-smart-watch-keeps-an-eye-on-ambient-co2-levels/ | This Smart Watch Keeps An Eye On Ambient CO2 Levels | Lewin Day | [
"Wearable Hacks"
] | [
"co2",
"smart watch",
"smartwatch",
"watch"
] | Human respiration takes in oxygen and in turn, we exhale carbon dioxide. Thus, an uptick of carbon dioxide levels around us can indicate we’re in the presence of other humans, and also, perhaps, the pathogens they carry. To explore this phenomenon, [C Scott Ananian] developed a mod for the Watchy open-source smartwatch... | 20 | 6 | [
{
"comment_id": "6395396",
"author": "Ren",
"timestamp": "2021-10-30T23:13:29",
"content": "I like the “industrial” look of it, but wonder if the wristband is uncomfortable.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395401",
"author": "C. Scott... | 1,760,372,901.286941 | ||
https://hackaday.com/2021/10/30/modified-toggle-switches-grace-hyper-detailed-cockpit-simulator-panels/ | Modified Toggle Switches Grace Hyper-Detailed Cockpit Simulator Panels | Dan Maloney | [
"Games",
"hardware"
] | [
"A-10",
"cockpit",
"electromagentic",
"simulator",
"switch",
"Thunderbolt II",
"toggle",
"warthog"
] | In the world of the cockpit simulator hobby, no detail is too small to obsess over. Getting the look and feel of each and every cockpit control just right is important, and often means shelling out for cockpit-accurate parts. But not always, as
these DIY magnetically captured toggle switches
show.
Chances are good you’... | 18 | 8 | [
{
"comment_id": "6395376",
"author": "Ren",
"timestamp": "2021-10-30T20:52:59",
"content": "Grace HyperGrace Hopper?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395488",
"author": "Jump cut",
"timestamp": "2021-10-31T08:55:09",
"c... | 1,760,372,901.583455 | ||
https://hackaday.com/2021/10/29/muggle-uses-e-paper-for-daily-prophet-replica/ | Muggle Uses E-Paper For Daily Prophet Replica | Chris Wilkinson | [
"Microcontrollers",
"Misc Hacks"
] | [
"e-paper",
"ESP32",
"harry potter",
"newspaper",
"Teensy"
] | News from the wizarding world is a little hard to come by for common muggles, but [Deep Tronix] has brought us one step closer to our magical counterparts with their
electronic replica of the Daily Prophet newspaper
.
Those familiar with the Harry Potter series will no doubt be familiar with the Daily Prophet. In the f... | 12 | 5 | [
{
"comment_id": "6395138",
"author": "Klausman",
"timestamp": "2021-10-29T20:28:47",
"content": "Wow! That thing is awesome!Maybe shorter breaks and flashes between the animations, but awesome idea!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395150",
... | 1,760,372,901.876457 | ||
https://hackaday.com/2021/10/29/all-aboard-the-railroad-keyboard-is-now-serving-open-sourceville/ | All Aboard! The Railroad Keyboard Is Now Serving Open Sourceville | Kristina Panos | [
"Peripherals Hacks"
] | [
"custom keyboard",
"ISO Enter",
"olkb",
"ortholinear"
] | Sometimes you don’t know what you want until you see it, and that goes for keyboard designs as much as it does the dessert cart.
The Railroad is [DiplomacyPunIn10Did]’s first keyboard design, believe it or not
. And, well, we like what we see. Good thing it’s open-source, eh?
While we personally don’t normally go for s... | 4 | 4 | [
{
"comment_id": "6395106",
"author": "peter",
"timestamp": "2021-10-29T18:37:34",
"content": "With a little reworking, you could make the F key section into a numpad with a layer button somewhere to enable it",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6395... | 1,760,372,901.63699 | ||
https://hackaday.com/2021/10/29/how-practical-is-harvesting-water-from-the-air/ | How Practical Is Harvesting Water From The Air? | Lewin Day | [
"Engineering",
"Science"
] | [] | Water is one of the most precious substances required to sustain human life. Unfortunately, in some areas like California, it’s starting to run out.
The ongoing drought has some people looking towards alternative solutions, such as sucking water out of the very air itself. In particular, a company called Tsunami Produc... | 117 | 35 | [
{
"comment_id": "6395063",
"author": "Ostracus",
"timestamp": "2021-10-29T17:05:09",
"content": "Do these require a special kind of droid to talk to them?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395066",
"author": "Ren",
"timestamp": ... | 1,760,372,901.830864 | ||
https://hackaday.com/2021/10/29/hackaday-podcast-142-65-days-of-airtime-racecars-staring-at-the-ceiling-a-pushy-white-cane-and-soapy-water-rockets/ | Hackaday Podcast 142: 65 Days Of Airtime, Racecars Staring At The Ceiling, A Pushy White Cane, And Soapy Water Rockets | Mike Szczys | [
"Hackaday Columns",
"Podcasts"
] | [
"Hackaday Podcast"
] | Hackaday editors Elliot Williams and Mike Szczys flap their gums about all the great hacks of the week. Something as simple as a wheel can be totally revolutionary, as we saw with a white cane mod for the visually impaired which adds an omniwheel that knows where it’s going. We enjoyed the collection of great hacks fro... | 0 | 0 | [] | 1,760,372,901.483336 | ||
https://hackaday.com/2021/10/29/can-3d-printed-press-tools-produce-repeatable-parts/ | Can 3D Printed Press Tools Produce Repeatable Parts? | Ryan Flowers | [
"3d Printer hacks"
] | [
"3d printed tool",
"3d printer",
"copper",
"press",
"tool"
] | When we think of using a press to form metal we think of large stamps with custom made metal dies under unimaginable hydraulic pressure. It’s unlikely we’d e think of anything 3D printed. And in a commercial environment we’d be right. But your average garage hacker is far more likely to have access to a bench vise and ... | 12 | 8 | [
{
"comment_id": "6395041",
"author": "smellsofbikes",
"timestamp": "2021-10-29T15:37:13",
"content": "I’ve been playing with this and have found that if you use a set of progressive dies, with each one only stretching the metal like 2mm, you can have quite long-lifetime dies and do some pretty amazi... | 1,760,372,901.533006 | ||
https://hackaday.com/2021/10/29/this-week-in-securityuse-after-free-for-dummies-wifi-cracking-and-php-fpm/ | This Week In Security:Use-After-Free For Dummies, WiFi Cracking, And PHP-FPM | Jonathan Bennett | [
"Hackaday Columns",
"News",
"Security Hacks",
"Slider"
] | [
"ctf",
"gitlab",
"This Week in Security",
"wpa"
] | In a brilliant write-up, [Stephen Tong] brings us his “
Use-After-Free for Dummies
“. It’s a surprising tale of a vulnerability that really shouldn’t exist, and a walkthrough of how to complete a capture the flag challenge. The vulnerable binary is running on a Raspberry Pi, which turns out to be very important. It’s a... | 27 | 6 | [
{
"comment_id": "6395027",
"author": "abjq",
"timestamp": "2021-10-29T14:41:18",
"content": "With ARM compilers using volatile isn’t enough for such operations (depending on the compiler).You also have to use memory barrier instructions (again, syntax depending on the compiler) to enforce that data ... | 1,760,372,901.446571 | ||
https://hackaday.com/2021/10/29/fixing-a-broken-game-installer-by-sheer-force-of-will/ | Fixing A Broken Game Installer By Sheer Force Of Will | Lewin Day | [
"Games",
"Misc Hacks"
] | [
"game",
"games",
"heroes of might and magic",
"installer",
"installshield",
"ubisoft",
"video games"
] | These days, we seldom purchase games on physical media. Even when buying titles from yesteryear, we usually download them from an online service. Some of these older games haven’t been properly ported to their new delivery platform, as [Slortibort] found out. Thus, it was time to dive into the game files
and sort the p... | 25 | 5 | [
{
"comment_id": "6395002",
"author": "Viktor",
"timestamp": "2021-10-29T12:08:44",
"content": "Sounds like cracking not hacking.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395009",
"author": "Brandano",
"timestamp": "2021-10-29T12:25:38"... | 1,760,372,901.940703 | ||
https://hackaday.com/2021/10/28/gamecubepc-packs-plenty-of-punch-into-gamecube-plastics/ | GamecubePC Packs Plenty Of Punch Into GameCube Plastics | Ryan Flowers | [
"Games"
] | [
"dolphin emulator",
"gamecube",
"gamecube hack",
"mSTX",
"nintendo gamecube",
"nintendo wii",
"wii"
] | If reading Hackaday teaches us anything, it’s that there is a subset of hackers who take things like emulator builds a step farther than most. [RetroModder] is very clearly one such hacker. Enter the
GamecubePC, which you can read about on Hackaday.io
. The GamecubePC is a multi-year project that aims to stuff an entir... | 2 | 2 | [
{
"comment_id": "6394934",
"author": "Ren",
"timestamp": "2021-10-29T01:06:27",
"content": "I didn’t have a GameCube, but I did have the LCD monitor that attached to one.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6394943",
"author": "Danjovic",
"t... | 1,760,372,901.680936 | ||
https://hackaday.com/2021/10/28/speaker-stun-gun-aims-to-combat-chinas-dancing-grannies/ | Speaker ‘Stun Gun’ Aims To Combat China’s Dancing Grannies | Lewin Day | [
"classic hacks",
"Featured",
"Interest",
"News",
"Original Art",
"Slider"
] | [
"anti-square dancing device",
"infrared",
"jammer",
"square dance",
"square dancing",
"tv-b-gone"
] | One of the more popular social activities in China is group dancing in public squares. Often the pastime of many middle-aged and older women, participants are colloquially referred to as “dancing grannies.” While the activity is relatively wholesome, some dancers have begun to draw the ire of their neighbourhoods with ... | 74 | 28 | [
{
"comment_id": "6394772",
"author": "Gravis",
"timestamp": "2021-10-28T14:37:23",
"content": "Honestly, this seems like the coward’s way of telling someone to turn down the music.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6394779",
"author": "T... | 1,760,372,902.09038 | ||
https://hackaday.com/2021/10/28/really-robotic-robot-costume-will-probably-win-the-contest/ | Really Robotic Robot Costume Will Probably Win The Contest | Kristina Panos | [
"Holiday Hacks",
"Robots Hacks"
] | [
"cardboard",
"cardboard robot",
"Micro:bit",
"robot"
] | Still don’t have anything to wear to that Halloween party this weekend? Or worse, your kid hasn’t decided on a costume that you both can agree on? Well, look no further than [Natasha Dzurny]’s
Sally Servo the Really Robotic Robot Costume and accompanying multi-part build guide
. You might want to start by raiding that ... | 8 | 6 | [
{
"comment_id": "6394747",
"author": "vib",
"timestamp": "2021-10-28T12:39:58",
"content": "Where is the keeb ? and the soap dispenser option ?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6394767",
"author": "Ren",
"timestamp": "2021-10-28... | 1,760,372,902.158808 | ||
https://hackaday.com/2021/10/28/taking-a-stroll-down-uncanny-valley-with-the-artificial-muscle-robotic-arm/ | Taking A Stroll Down Uncanny Valley With The Artificial Muscle Robotic Arm | Ryan Flowers | [
"Robots Hacks"
] | [
"artificial muscle",
"hydraulic",
"robot hand",
"uncanny valley",
"water pressure"
] | Wikipedia says “The uncanny valley hypothesis predicts that an entity appearing almost human will risk eliciting cold, eerie feelings in viewers.” And yes, we have to admit that as incredible as it is, seeing [Automaton Robotics]’ hand and forearm move in almost human fashion is a bit on the disturbing side. Don’t just... | 24 | 10 | [
{
"comment_id": "6394687",
"author": "BrightBlueJim",
"timestamp": "2021-10-28T08:17:29",
"content": "At least they didn’t go with a flesh-colored covering.This is promising. Muscle-analogs that pull when activated have advantages when it comes to mounting them, because unlike pushing actuators, th... | 1,760,372,902.257459 | ||
https://hackaday.com/2021/10/27/new-raspberry-pi-zero-2-upgrades-to-quad-core-processor/ | New Raspberry Pi Zero 2 Upgrades To Quad-Core Processor | Tom Nardi | [
"News",
"Raspberry Pi"
] | [
"announcement",
"pi zero",
"Pi Zero 2 W",
"SBC"
] | Over the years, we’ve seen a steady stream of updates for the Raspberry Pi Foundation’s flagship single-board computer (SBC), with each new release representing a significant boost in processing power and capability. But the slim Raspberry Pi Zero, released all the way back in 2015, hasn’t been quite so fortunate. Beyo... | 78 | 20 | [
{
"comment_id": "6394665",
"author": "Eric_S",
"timestamp": "2021-10-28T06:27:04",
"content": "I was (very) vainly hoping for the RP2040 to be merged into the SoC somehow. But a special silicon spin for a Zero is “a bit” of a tall order, I understand.",
"parent_id": null,
"depth": 1,
"re... | 1,760,372,902.51414 | ||
https://hackaday.com/2021/10/27/halloween-themed-talking-clock-relies-on-pi-pico/ | Halloween-Themed Talking Clock Relies On Pi Pico | Lewin Day | [
"clock hacks",
"Holiday Hacks"
] | [
"clock",
"talking clock"
] | Many of us learn to read clocks at a young age, however, talking clocks eliminate the need to do that entirely. [Alberto] whipped up one of his own, in this case designed with
some Halloween holiday spookiness
.
A basic clock movement is used to display the time in the typical fashion. However, the movement also featur... | 3 | 2 | [
{
"comment_id": "6394646",
"author": "andrea",
"timestamp": "2021-10-28T03:33:50",
"content": "put some blue leds into the eyes and make sans",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6394654",
"author": "Chris j",
"timestamp": "2021-10-28T04:44:1... | 1,760,372,902.194801 | ||
https://hackaday.com/2021/10/27/a-tidy-clamshell-keyboard-for-the-pinephone/ | A Tidy Clamshell Keyboard For The Pinephone | Lewin Day | [
"Phone Hacks"
] | [
"phone",
"pinephone"
] | Something a lot of people don’t realise about modern smartphones is that many of them have fully-featured USB interfaces. Perhaps the best of all is the Pinephone, which is a fully open-source smartphone that gives end users total control over their phone experience. [silver] has such a phone, and set about building hi... | 9 | 7 | [
{
"comment_id": "6394617",
"author": "BrightBlueJim",
"timestamp": "2021-10-28T00:03:30",
"content": "Nice. Very nice. Looks like some thought went into the hinge, too. Damn nice.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6394639",
"author": "Derek... | 1,760,372,902.301104 | ||
https://hackaday.com/2021/10/29/vcf-east-2021-the-early-evolution-of-personal-computer-graphics/ | VCF East 2021: The Early Evolution Of Personal Computer Graphics | Chris Wilkinson | [
"cons",
"Retrocomputing"
] | [
"graphics",
"retrocomputing",
"transducer",
"Vintage Computer Festival",
"vintage computing"
] | The evolution of computer graphics is something that has been well documented over the years, and it’s a topic that we always enjoy revisiting with our retrocomputing readers. To wit, [Stephen A. Edwards] has put together an
impressively detailed presentation
that looks back at the computer graphics technology of the 1... | 12 | 5 | [
{
"comment_id": "6394990",
"author": "Bob",
"timestamp": "2021-10-29T09:34:16",
"content": "Missing a generation. Early displays also used storage tube displays. The tube itself is bistable and image remains (mostly) until erased. ARDS terminals used this. They also used U-core ROMS. Drive wire... | 1,760,372,902.710208 | ||
https://hackaday.com/2021/10/28/turn-a-parking-sensor-into-an-anemometer/ | Turn A Parking Sensor Into An Anemometer | Danie Conradie | [
"classic hacks",
"Microcontrollers"
] | [] | To measure wind speed and direction, most people turn the traditional cup anemometer and wind vane. Another less-known method is to use an array of ultrasonic transducers, which doesn’t need any moving parts. [Andy] demonstrates building an
ultrasonic anemometer using a cheap after-market parking distance sensor kit
an... | 10 | 2 | [
{
"comment_id": "6395004",
"author": "Jack",
"timestamp": "2021-10-29T12:10:11",
"content": "The question is why the wind sensors are so expensive, or at least, why isn’t there a cheaper wind sensor based on similar level of hardware. Just a different sensor configuration, housing and programming c... | 1,760,372,902.562647 | ||
https://hackaday.com/2021/10/28/rc-minecraft-boat-patrols-the-pool-for-treasure/ | RCMinecraftBoat Patrols The Pool For Treasure | Tom Nardi | [
"Games",
"Toy Hacks"
] | [
"minecraft",
"propeller",
"rc",
"rc boat",
"rudder",
"servo"
] | Looking to recreate those relaxing
Minecraft
fishing sessions in real life,
[electrosync] recently set out to 3D print himself a blocky remote controlled boat
, complete with a similarly cubic occupant to ride in it. Each element of the build, from the oars to the bobber on the end of the fishing line, has been designe... | 5 | 4 | [
{
"comment_id": "6394947",
"author": "Ren",
"timestamp": "2021-10-29T03:02:49",
"content": "Enjoyed the video!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6394953",
"author": "scoldog",
"timestamp": "2021-10-29T03:51:51",
"content": "Yes, but do... | 1,760,372,902.60781 | ||
https://hackaday.com/2021/10/28/soil-sensor-shows-flip-dots-arent-just-for-signs/ | Soil Sensor Shows Flip-Dots Aren’t Just For Signs | Donald Papp | [
"green hacks"
] | [
"ESP32",
"flip-dot",
"moisture sensor",
"plant care",
"soil sensor"
] | Soil sensors are handy things, but while sensing moisture is what they
do
, how they handle that data is what makes them
useful
. Ensuring usefulness is what led [Maakbaas] to design and create
an ESP32-based soil moisture sensor
with wireless connectivity, deep sleep, data logging, and the ability to indicate that the... | 13 | 7 | [
{
"comment_id": "6394928",
"author": "rpavlik",
"timestamp": "2021-10-29T00:22:55",
"content": "Bistable displays!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6394929",
"author": "BrightBlueJim",
"timestamp": "2021-10-29T00:31:49",
"content": "O... | 1,760,372,902.660421 | ||
https://hackaday.com/2021/10/28/oscilloscope-clocks-now-in-color/ | Oscilloscope Clocks: Now In Color! | Adam Zeloof | [
"clock hacks",
"FPGA",
"Tool Hacks"
] | [
"clock",
"fpga",
"oscilloscope"
] | Ordinarily, when we hear the words “clock” and “oscilloscope” in the same sentence we conjure images of measuring a stable, repeating square wave that acts as the heartbeat of a system. Of course, that’s not the only meaning– there’s a much more fun and less useful one: using an oscilloscope to display the time.
That’s... | 5 | 2 | [
{
"comment_id": "6394935",
"author": "W2AEW",
"timestamp": "2021-10-29T01:13:37",
"content": "Cool, and thank you for Rt reference to my blog on the DAC.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395024",
"author": "WF",
"timestamp": "2... | 1,760,372,902.874615 | ||
https://hackaday.com/2021/10/28/eye-tracking-device-is-a-tiny-movie-theatre-for-jumping-spiders/ | Eye-Tracking Device Is A Tiny Movie Theatre For Jumping Spiders | Donald Papp | [
"digital cameras hacks",
"Science"
] | [
"eye tracking",
"ir",
"jumping spider",
"research",
"science"
] | The eyes are windows into the mind, and
this research into what jumping spiders look at and why
required a clever device that performs eye tracking, but for jumping spiders. The eyesight of these fascinating creatures in some ways has a lot in common with humans. We both perceive a wide-angle region of lower visual fid... | 18 | 6 | [
{
"comment_id": "6394847",
"author": "smellsofbikes",
"timestamp": "2021-10-28T18:48:51",
"content": "A cool thing about some insects (and if I recall correctly spiders do this too) is that they can derive color information even though they only have monochromatic photoreceptors. By separately proc... | 1,760,372,902.831159 | ||
https://hackaday.com/2021/10/28/four-more-talks-added-to-the-2021-remoticon-lineup/ | Four More Talks Added To The 2021 Remoticon Lineup | Tom Nardi | [
"cons",
"Hackaday Columns",
"Slider"
] | [
"2021 Hackaday Remoticon",
"presenters",
"Remoticon",
"talks"
] | We’ve already unveiled multiple keynote speakers and a slate of fascinating presenters that will be showing off everything from reverse engineering vintage calculators to taking those first tentative steps on your CAD journey for this year’s Remoticon. You’d be forgiven for thinking that’s everything you’ll see at the ... | 1 | 1 | [
{
"comment_id": "6394842",
"author": "Ren",
"timestamp": "2021-10-28T18:25:53",
"content": "With this list of speakers, my appetite is whet!Now to find time to view (“attend”) the talks.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,372,902.758711 | ||
https://hackaday.com/2021/10/26/being-green-its-a-rich-mans-game/ | Being Green, It’s A Rich Man’s Game | Jenny List | [
"Current Events",
"Featured",
"green hacks",
"Rants",
"Slider"
] | [
"affordable tech",
"climate change",
"electric car",
"green tech",
"Heat pump",
"insulation",
"solar panels"
] | It’s an old saying with an apocryphal origin: “
May you live in interesting times
“. We Brits are certainly living in interesting times at the moment, as a perfect storm of the pandemic, rising energy prices, global supply chain issues, and arguably the post-Brexit departure of EU-national truck drivers has given us sh... | 245 | 33 | [
{
"comment_id": "6393985",
"author": "dave b",
"timestamp": "2021-10-26T14:10:34",
"content": "verrrrry cherry picked facts to make the point.In essence the post says the obvious. Living according to todays preferences in a luxurious manner is expensive. Having some lesser degree of style comes with... | 1,760,372,903.367695 | ||
https://hackaday.com/2021/10/26/this-really-really-is-your-last-chance-to-enter-the-2021-hackaday-prize-really/ | This Really Really Is Your Last Chance To Enter The 2021 Hackaday Prize (Really!) | Mike Szczys | [
"contests",
"The Hackaday Prize"
] | [
"2021 Hackaday Prize",
"Reactive Wildcard"
] | Oh, walnuts! How can we
already
be at the end of the last round? 2021 has been a time warp and now we are staring down
the final day to enter the Reactivate Wildcard challenge of the Hackaday Prize
. You must enter by 7 AM Pacific time on Wednesday or it’s too late!
Of course the good news is that the topic is wide-ope... | 2 | 1 | [
{
"comment_id": "6393986",
"author": "behle",
"timestamp": "2021-10-26T14:15:48",
"content": "Regarding the titel, may I still enter next week? :D",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6394065",
"author": "Mike Szczys",
"timestamp": ... | 1,760,372,902.91018 | ||
https://hackaday.com/2021/10/26/spider-man-swings-a-little-closer-to-reality/ | Spider-Man Swings A Little Closer To Reality | Matthew Carlson | [
"Toy Hacks",
"Weapons Hacks"
] | [
"hot glue",
"spider-man",
"spiderman",
"web shooter",
"web slinger",
"webshooter"
] | Despite reading Hackaday daily and seeing the incredible things that people do, something comes along that just sort of blows you away every once in a while. Sometimes it’s just technically impressive, but often it is just, “I didn’t think that anyone would try this or even think of this.” [Joel Creates] is one such ex... | 5 | 2 | [
{
"comment_id": "6393955",
"author": "Viktor",
"timestamp": "2021-10-26T11:17:29",
"content": "Maybe superglue-on-impact bag shooted out?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6393967",
"author": "Fred",
"timestamp": "2021-10-26T12:38:08",
... | 1,760,372,903.405612 | ||
https://hackaday.com/2021/10/26/classic-80s-text-to-speech-on-classic-80s-hardware/ | Classic 80s Text-To-Speech On Classic 80s Hardware | Bryan Cockfield | [
"Retrocomputing"
] | [
"c++",
"ESP8266",
"I2S",
"retrocomputer",
"serial",
"software",
"speech",
"synthesizer",
"text to speech",
"VIC-20"
] | Those of us who were around in the late 70s and into the 80s might remember the Speak & Spell, a children’s toy with a remarkable text-to-speech synthesizer. While it sounds dated by today’s standards, it was revolutionary for the time and was riding a wave of text-to-speech functionality that was starting to arrive to... | 34 | 14 | [
{
"comment_id": "6393934",
"author": "Nitpicker Smartyass",
"timestamp": "2021-10-26T08:27:17",
"content": "Pretty sure there was a small version of SAM for the VC20 (SAM/Reciter was quite popular on the C64) … it did create quite understandable output, and by this to me seemed superior to a lot of ... | 1,760,372,903.685576 | ||
https://hackaday.com/2021/10/25/surf-sensor-adds-depth-to-finding-the-ultimate-wave/ | Surf Sensor Adds Depth To Finding The Ultimate Wave | Ryan Flowers | [
"Raspberry Pi",
"Tech Hacks"
] | [
"breaking wave",
"depth sensing",
"Raspberry Pi 4B",
"sonar",
"surfing",
"transducer",
"underwater sonar"
] | To say that the ocean is a dynamic environment would be a gross understatement, especially when coastlines are involved. Waves crash, tides go in and out, and countless variables make even the usual conditions a guessing game. When [foobarbecue] goes surfing, he tries to take into account all of these things. The best ... | 9 | 6 | [
{
"comment_id": "6393942",
"author": "HorstBaerbel",
"timestamp": "2021-10-26T09:05:54",
"content": "Nice, but maybe use an Arduino (or ESP if you need BT/WiFi) for longer runtimes? A Pi 4b seem seriously overpowered and also too big space-wise for this application…",
"parent_id": null,
"dep... | 1,760,372,903.492458 | ||
https://hackaday.com/2021/10/25/building-a-water-rocket-that-lands-via-parachute/ | Building A Water Rocket That Lands Via Parachute | Lewin Day | [
"Misc Hacks"
] | [
"rocket",
"water rocket"
] | Water rockets are plenty of fun, but they can be even more fun if you go wild with the engineering. [The Q] is one such experimenter, who built a dual-thrust water rocket that even has
a parachute for landing!
The testing took place in an area strangely reminiscent of a certain operating system.
The dual-thrust concept... | 6 | 3 | [
{
"comment_id": "6393977",
"author": "Garth Bock",
"timestamp": "2021-10-26T13:25:58",
"content": "This is great ! I remember the plastic water rocket with the pump that I had as a kid. I think it was 2 stage as well. Maybe this could work as a sounding rocket with some kind of guidance system. I wo... | 1,760,372,903.452177 | ||
https://hackaday.com/2021/10/25/drawing-robot-creates-portraits-using-pen-paper-and-algorithms/ | Drawing Robot Creates Portraits Using Pen, Paper And Algorithms | Robin Kearey | [
"Art",
"Robots Hacks"
] | [
"art",
"drawing",
"portrait",
"robot"
] | Although the market for hand-drawn portraits largely collapsed following the invention of photography, there’s something magical about watching an artist create a lifelike image using nothing but a pencil, some paper, and their fine motor skills. Watching a machine do the same is a similarly captivating experience, tho... | 6 | 1 | [
{
"comment_id": "6393892",
"author": "Paul",
"timestamp": "2021-10-26T01:32:07",
"content": "Darn, I was hoping to finally see an algorithm that actually *drew* a picture. But this is yet another plotter that converts a webcam picture to an edge-enhanced low-resolution 4-level grayscale bitmap, and... | 1,760,372,903.613038 | ||
https://hackaday.com/2021/10/26/add-mycelium-to-your-mesh-networks/ | Add Mycelium To Your Mesh Networks | Bryan Cockfield | [
"Radio Hacks"
] | [
"amateur",
"antenna",
"encrypted",
"ESP32",
"ham",
"mesh",
"message",
"messaging",
"mushroom",
"mycelium",
"radio",
"secure"
] | In many parts of the world, days after a good rainfall, it’s fairly common to see various species of mushrooms popping up out of the ground. These mysterious organisms aren’t the whole story, though. The living being is a vast network of hidden fibers, called mycelium, spreading through the ground and into any other or... | 21 | 13 | [
{
"comment_id": "6394287",
"author": "aceat64",
"timestamp": "2021-10-27T05:24:25",
"content": "How does this compare to something like Meshtastic?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6394655",
"author": "2ftg",
"timestamp": "2021-... | 1,760,372,903.739786 | ||
https://hackaday.com/2021/10/26/simple-electronic-hacks-inspire-doing-more-with-less/ | Simple Electronic Hacks Inspire Doing More With Less | Ryan Flowers | [
"classic hacks",
"Misc Hacks"
] | [
"blinking led",
"diode",
"diode hacks",
"electronics hack",
"LED hack",
"lm7805",
"op amp hack",
"op-amp",
"salvaged",
"salvaged electronics",
"voltage regulator"
] | It’s late at night. The solder smoke keeps getting in your tired eyes, but your project is nearly done. The main circuit is powered by your 13.8 V bench supply, but
part
of the circuit needs 9 V. You dig into your stash to find your last LM7809 voltage regulator, but all you have is a bunch of LM7805’s. Are you done fo... | 18 | 8 | [
{
"comment_id": "6394274",
"author": "Arthur Mezins",
"timestamp": "2021-10-27T03:58:59",
"content": "There’s a old “trick” almost as old as the original LM309 5V regulator, to convert any 3 terminal into an adjustable regulator whose output voltage is GREATER than the regulator’s. This was develop... | 1,760,372,903.862021 | ||
https://hackaday.com/2021/10/26/theres-not-a-cassingle-thing-missing-from-this-cassette-deck-masterclass/ | There’s Not A Cassingle Thing Missing From This Cassette Deck Masterclass | Kristina Panos | [
"how-to"
] | [
"audio cassette",
"capstan",
"cassette",
"cassette deck",
"repair",
"tape head"
] | For [ke4mcl], this whole cassette craze of late is not a new discovery so much as it is a personal nostalgia machine. Since [ke4mcl] sees a lot of basic questions go unanswered, they made
an incredible beginner’s guide to all things cassette deck
. This concise wealth of information covers everything from terminology t... | 78 | 18 | [
{
"comment_id": "6394213",
"author": "Gregg Eshelman",
"timestamp": "2021-10-26T23:10:44",
"content": "If only some company would manufacture a high quality cassette mechanism. There’s only one or two manufacturers of them now and even when all the best build options are selected, they’re still garb... | 1,760,372,903.977472 | ||
https://hackaday.com/2021/10/26/3d-printer-bed-probing-using-a-tact-switch-and-coin-cell/ | 3D Printer Bed Probing Using A Tact Switch And Coin Cell | Al Williams | [
"3d Printer hacks"
] | [
"3d printer",
"z probe"
] | Inspired by his CNC’s leveling system, [Chuck] built a small PCB to
help level his 3D printer
and he shares the details in the video you can see below. The idea is simple, the nozzle pushes down on the PCB which has a tact switch underneath. When the switch closes, an LED lights.
In practice, you measure the height of ... | 39 | 12 | [
{
"comment_id": "6394136",
"author": "Jan Praegert",
"timestamp": "2021-10-26T20:14:21",
"content": "A cheap fully automated clone probe costs less than 10 €.To me automatic bed leveling was really a game changer.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id"... | 1,760,372,903.813706 | ||
https://hackaday.com/2021/10/26/superslicer-reviewed-another-3dp-slicer/ | SuperSlicer Reviewed: Another 3DP Slicer? | Al Williams | [
"3d Printer hacks"
] | [
"cura",
"PrusaSlicer",
"simplify3d",
"slic3r",
"slicer",
"superslicer"
] | When you think of slicers for FDM 3D printing — especially free slicers — you probably think of Cura, Slic3r, or PrusaSlicer. There are fans of MatterControl and many people pay for Simplify3D. However, there are quite a few other slicers out there including the one [TeachingTech] has switched to:
SuperSlicer
. You can... | 32 | 10 | [
{
"comment_id": "6394105",
"author": "Prusa",
"timestamp": "2021-10-26T18:52:56",
"content": "SuperSlicer is a community fork of PrusaSlicer. Basically, Ctrl+C, Ctrl+V of PrusaSlicer, where the author then experiments with new things. Some might be a good idea, some not. Some might work, some might ... | 1,760,372,904.122093 | ||
https://hackaday.com/2021/10/26/how-much-is-that-shirt-in-the-atmospheric-window/ | How Much Is That Shirt In The (Atmospheric) Window? | Kristina Panos | [
"chemistry hacks",
"Featured",
"Interest",
"Original Art",
"Slider"
] | [
"atmospheric window",
"climate change",
"electromagnetic radiation",
"greenhouse gases",
"infrared",
"passive cooling"
] | Summer is fading into a memory now, but as surely as the earth orbits the sun, those hot and sweaty days will return soon enough. And what can you do about it at the level of a single, suffering human being? After all, a person can only remove so much clothing to help cool off. Until someone figures out a way to make t... | 41 | 16 | [
{
"comment_id": "6394087",
"author": "PWalsh",
"timestamp": "2021-10-26T17:46:15",
"content": "Here’s something to consider: PTFE is teflon, which is a fluoride.I’d be concerned about wearing a fluoride compound on my body, with rubbing and sweat and possible transfer. Also, I routinely get scratche... | 1,760,372,904.058128 | ||
https://hackaday.com/2021/10/26/smart-flower-pot-build-is-all-about-that-base/ | Smart Flower Pot Build Is All About That Base | Kristina Panos | [
"how-to",
"Misc Hacks"
] | [
"automated plant care",
"flower pot",
"internet of flower pots",
"IoT",
"PyPortal"
] | For some reason, it seems like most of the plant monitoring setups we see separate the plant and the monitoring system. This makes sense in a don’t-own-a-waterbed-and-a-cat kind of way, but it also doesn’t from an aestheitc standpoint.
This build by [Jorge Enrique Gamboa Fuentes] sure does look nice and tidy as an all-... | 10 | 3 | [
{
"comment_id": "6394028",
"author": "Ren",
"timestamp": "2021-10-26T15:36:46",
"content": "And the base is a vase!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6394038",
"author": "some guy",
"timestamp": "2021-10-26T16:07:52",
"co... | 1,760,372,904.312969 | ||
https://hackaday.com/2021/10/30/esp32-internet-radio-is-no-game/ | ESP32 Internet Radio Is No Game | Al Williams | [
"Arduino Hacks",
"ARM"
] | [
"ESP32",
"internet radio",
"t-display",
"tto"
] | More than once, we’ve looked at a cool board like the TTGO T-Display and thought, “What can we build with this?” If you’re [Danko Bertović], the answer is the
tiny Internet radio you can see in the
Volos Projects
video below
.
Of course, the core Internet streaming code would be useful with any ESP32, but the display m... | 6 | 3 | [
{
"comment_id": "6395365",
"author": "Popolon",
"timestamp": "2021-10-30T19:18:04",
"content": "There is a mistake in the “Posted in”, if this is ESP32, this isn’t ARM, this is Espressif LX6 or RISC-V ISA. Here is an LX6.",
"parent_id": null,
"depth": 1,
"replies": [
{
"com... | 1,760,372,904.351499 | ||
https://hackaday.com/2021/10/30/dream-bigger-predict-the-future/ | Dream Bigger, Predict The Future | Elliot Williams | [
"Hackaday Columns",
"Parts",
"Rants"
] | [
"accelerometer",
"cheap",
"right",
"wrong"
] | I’d love to tell you that I’m never wrong, but I’ve been wrong a lot. Remember the Arduino? When it was brand new, I thought it was some silly collection of libraries and a drop-down menu for people who are too lazy to just type out their own
#include
statements. Needless to say, it launched about a million hacks and b... | 55 | 14 | [
{
"comment_id": "6395325",
"author": "tyjtyjty",
"timestamp": "2021-10-30T14:59:41",
"content": "I dream about linux device with working time a mont on one charge",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395345",
"author": "Gravis",
"t... | 1,760,372,904.527801 | ||
https://hackaday.com/2021/10/30/skeleton-watches-you-intensely-because-its-halloween-okay/ | Skeleton Watches You Intensely Because It’s Halloween, Okay | Lewin Day | [
"Holiday Hacks"
] | [
"halloween",
"opencv",
"raspberry pi",
"skeleton"
] | If you’ve ever seen a painting in which the eyes follow you around the room, you might have found that a bit uneasy. [CuriousInventor] has taken that concept further with a skeleton that literally holds a gaze on
anyone in its field of view.
The heart of the system is a Raspberry Pi Zero, fitted with a Pi Camera. Runni... | 1 | 1 | [
{
"comment_id": "6395596",
"author": "Hirudinea",
"timestamp": "2021-10-31T19:53:10",
"content": "There’s nothing creepier than a guy sitting on his steps not wearing pants on watching you.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,372,904.267841 | ||
https://hackaday.com/2021/10/30/cheap-caliper-hack-keeps-em-running-longer/ | Cheap Caliper Hack Keeps ‘Em Running Longer | Lewin Day | [
"Tool Hacks"
] | [
"caliper",
"digital caliper"
] | Many a hacker is a fan of the cheapest calipers on the market. Manufactured in China and priced low enough that they’re virtually disposable, they get a lot of jobs done in the world where clinical accuracy isn’t required. However, their batteries often die when left in a drawer for a long time. [Ben] was sick of that,... | 48 | 22 | [
{
"comment_id": "6395258",
"author": "vib",
"timestamp": "2021-10-30T08:35:59",
"content": "Because the micro-controller from those cheap callipers isn´t optimized for low-power, or lacks the necessary power states, they drain the batteries all the time. All they do is switching the LCD off, which d... | 1,760,372,904.434586 | ||
https://hackaday.com/2021/10/29/emc-tutorial-puts-you-in-the-loop/ | EMC Tutorial Puts You In The Loop | Al Williams | [
"Misc Hacks"
] | [
"emc",
"LTSpice",
"noise",
"noise simulation",
"smps",
"switching power supply"
] | A student once asked his lab instructor why his amplifier was oscillating. After looking at it and noting the wild construction, the instructor remarked, “A better question would be why shouldn’t it oscillate?” The truth of it is, our circuits generate noise and especially if they are oscillating anyway. Distortion and... | 2 | 2 | [
{
"comment_id": "6395254",
"author": "helge",
"timestamp": "2021-10-30T07:35:18",
"content": "Or, as the Texas Instruments AN-2155 puts it, “The goal of our DC/DC converter design is to make bad antennas out of the loops that carry the high di/dt currents.”",
"parent_id": null,
"depth": 1,
... | 1,760,372,904.677099 | ||
https://hackaday.com/2021/10/29/this-eyeball-watches-you-thanks-to-kinect-tracking/ | This Eyeball Watches You Thanks To Kinect Tracking | Lewin Day | [
"Holiday Hacks"
] | [
"eyeball",
"halloween",
"Kinect"
] | Eyeballs are often watching us, but they’re usually embedded in the skull of another human or animal. When they’re staring at you by themselves, they can be altogether more creepy. This Halloween project from [allpartscombined] aims to elicit
that exact spooky vibe
.
The project relies on a Kinect V2 to do body trackin... | 4 | 2 | [
{
"comment_id": "6395255",
"author": "Blue Moon",
"timestamp": "2021-10-30T08:14:42",
"content": "People really are finding every cool way to use Kinect that doesn’t involve making a fun game using one.Always thought that the tech for Kinect was a little too niche and not quite responsive enough for... | 1,760,372,904.717385 | ||
https://hackaday.com/2021/10/29/worlds-cutest-pomodoro-timer-is-also-a-clock/ | World’s Cutest Pomodoro Timer Is Also A Clock | Kristina Panos | [
"Arduino Hacks",
"clock hacks"
] | [
"7-segment display",
"arduino",
"arduino nano",
"buzzer",
"pomodoro",
"rtc",
"the pomodoro technique",
"time management"
] | Student and hacker [prusteen] recently fell in love with the Pomodoro method of time management. That’s where you concentrate on your task for 25 minutes, then take a five-minute break, and repeat this four times with a longer break at the end. Initially, [prusteen] was keeping track on their phone, but hated having to... | 17 | 5 | [
{
"comment_id": "6395200",
"author": "Drone",
"timestamp": "2021-10-29T23:20:29",
"content": "A clock without seconds is not a clock.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6395202",
"author": "adrian godwin",
"timestamp": "2021-10-29... | 1,760,372,904.773308 | ||
https://hackaday.com/2021/10/27/ethernet-cable-turned-into-antenna-to-exploit-air-gapped-computers/ | Ethernet Cable Turned Into Antenna To Exploit Air-Gapped Computers | Dan Maloney | [
"Security Hacks"
] | [
"air gap",
"Cat6",
"ethernet",
"exfiltration",
"exploit",
"HackRF",
"RF",
"RTL-SDR"
] | Good news, everyone! Security researcher [Mordechai Guri] has given us yet another reason to look askance at our computers and wonder who might be sniffing in our private doings.
This time, your suspicious gaze will settle on the lowly Ethernet cable, which he has used to
exfiltrate data across an air gap
. The exploit... | 30 | 13 | [
{
"comment_id": "6394578",
"author": "Gravis",
"timestamp": "2021-10-27T21:18:54",
"content": "Very cool. Also, I’m pretty sure that if you air gapping your systems then you are at the very least going to be using shielded LAN cable. I would hope you would use fiber to at least make tapping in dif... | 1,760,372,905.444516 | ||
https://hackaday.com/2021/10/27/heavy-metal-lathe-build-doesnt-spare-the-steel/ | Heavy Metal Lathe Build Doesn’t Spare The Steel | Dan Maloney | [
"Tool Hacks"
] | [
"fabrication",
"lathe",
"Machine tool",
"machining",
"steel",
"welding"
] | It’s common wisdom that the lathe is the essential machine tool, and the only one that can make copies of itself. While we won’t argue the primacy of the lathe in the machine shop,
this scratch-built, heavy-duty lathe
gives the lie to the latter argument — almost.
We’re used to seeing homebrew lathes, of course, and we... | 22 | 10 | [
{
"comment_id": "6394537",
"author": "Wheels17",
"timestamp": "2021-10-27T18:46:42",
"content": "Beautiful work. Quite a commitment and skilled execution. The els would be a great addition.At just over 1000 lbs it’s not real heavy metal. Here’s on where the machinist rides the carriage:https://i1... | 1,760,372,904.831348 | ||
https://hackaday.com/2021/10/27/vcf-east-2021-preserving-heathkits-8-bit-computers/ | VCF East 2021: Preserving Heathkit’s 8-Bit Computers | Tom Nardi | [
"cons",
"Featured",
"History",
"Retrocomputing",
"Slider"
] | [
"heathkit",
"Intel 8080",
"microcomputer",
"VCF East",
"VCF East 2021"
] | To say the Heathkit name is well known among Hackaday readers would be something of an understatement. Their legendary kits launched an untold number of electronics hobbies, and ultimately, plenty of careers. From relatively simple radio receivers to oscilloscopes and televisions, the company offered kits for every ski... | 39 | 15 | [
{
"comment_id": "6394500",
"author": "Ren",
"timestamp": "2021-10-27T17:15:57",
"content": "Each time I read “H8”, my mind thought of the Hitachi family of processor.https://en.wikipedia.org/wiki/H8_Family",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6394508... | 1,760,372,904.911584 | ||
https://hackaday.com/2021/10/27/3d-printed-printing-plates-made-using-modern-tools/ | 3D Printed Printing Plates Made Using Modern Tools | Dave Rowntree | [
"Art",
"Misc Hacks"
] | [
"3d printing",
"inkscape",
"KiCAD",
"letterpress",
"openscad"
] | It’s widely accepted that the invention of the printing press by Gutenberg in the 15
th
Century was the event that essentially enabled the development of the modern world, allowing access to knowledge beyond anything that came before, even if the Chinese got in on the bookmaking act some 500 years previously. Fast-forw... | 15 | 9 | [
{
"comment_id": "6394468",
"author": "Joseph Eoff",
"timestamp": "2021-10-27T15:41:00",
"content": "Guteberg’s real inovation was movable type. Rather than carving each page, you could assemble them from common pieces (letters.)There were printing presses in use in Europe before Gutenberg – he didn... | 1,760,372,904.959991 | ||
https://hackaday.com/2021/10/27/tech-in-plain-sight-air-conditioning/ | Tech In Plain Sight: Air Conditioning | Al Williams | [
"Hackaday Columns",
"home hacks",
"Misc Hacks",
"Slider"
] | [
"air conditioning",
"carrier",
"ice",
"refigeration"
] | I’m always amazed that technology can totally wipe out industries. Sure, some people make a living making horseshoes, for example, but the demand for them is way down compared to what it would have been when horses were the normal mode of transportation. But even so, people still make horseshoes. But think about the ic... | 41 | 13 | [
{
"comment_id": "6394433",
"author": "cyberteque",
"timestamp": "2021-10-27T14:08:53",
"content": "not many farriers actually forge horseshoes these daysmost use premade ones, Winchester no longer make guns and ammo but the horseshoe business is in full swing",
"parent_id": null,
"depth": 1,... | 1,760,372,905.039988 | ||
https://hackaday.com/2021/10/27/esp32-clock-takes-time-to-give-weather-info-too/ | ESP32 Clock Takes Time To Give Weather Info, Too | Kristina Panos | [
"clock hacks",
"Microcontrollers"
] | [
"clock",
"ESP32",
"weather"
] | It’s fall in the northern hemisphere, so [Mike Rankin]’s kids are back in school and have returned to consulting him every morning about the weather and what they should wear. Since he’s no meteorologist,
[Mike] built a beautifully dim and diminutive clock
that does all the work for him, plus much more. It glows a love... | 9 | 5 | [
{
"comment_id": "6394401",
"author": "Mike A Rankin",
"timestamp": "2021-10-27T13:01:14",
"content": "Thank you for the wonderful write up and it is an honor to see the project on Hackaday. I rarely write code so I basically mashed together bits and pieces of a few different sketches so I’m surprise... | 1,760,372,905.085489 |
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