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|---|---|---|---|---|---|---|---|---|---|---|---|
https://hackaday.com/2023/06/27/wind-to-heat-a-lot-of-hot-air/ | Wind-to-Heat: A Lot Of Hot Air? | Lewin Day | [
"Current Events",
"Engineering",
"Featured",
"Original Art",
"Slider"
] | [
"fluid brake",
"heat",
"Heat pump",
"joule machine",
"water brake",
"wind to heat"
] | Heating is one of the greatest uses of energy in human society today. Where we once burned logs to stave off the brutal winter chill, now we lean on gas and electricity to warm our homes and keep us safe and toasty. In some colder climates, like the UK, heating can make up 60-80% of total domestic energy demands.
Howev... | 87 | 15 | [
{
"comment_id": "6656450",
"author": "Dude",
"timestamp": "2023-06-27T14:13:08",
"content": ">Of course, the wind doesn’t blow all the timeAnd even more rarely does it blow at 11-14 m/s. The yearly mean wind speed in central and northern Europe revolves around 3 – 3.5 m/s. The power output of a turb... | 1,760,372,254.905739 | ||
https://hackaday.com/2023/06/27/spindle-upgrade-makes-pocketnc-faster-and-smoother/ | Spindle Upgrade Makes PocketNC Faster And Smoother | Dan Maloney | [
"cnc hacks"
] | [
"5-Axis",
"BLDC",
"chatter",
"cnc",
"collet",
"ER-11",
"esc",
"feeds and speeds",
"PocketNC",
"spindle"
] | Conventional wisdom says that rigidity is the name of the game when it comes to machine tool performance. After all, there’s got to be a reason for CNC machines that need specialized rigging companies just to deliver them. But is there perhaps a way for the hobby machinist to cheat a little on that?
From the look of [R... | 21 | 9 | [
{
"comment_id": "6656408",
"author": "Andy Pugh",
"timestamp": "2023-06-27T11:22:39",
"content": "Pocket-NC do offer a couple of 50k RPM spindle options. But I would be surprised if they were inexpensive :-) (They also seem to be air spindles, requiring a compressor)",
"parent_id": null,
"de... | 1,760,372,254.768807 | ||
https://hackaday.com/2023/06/27/escalate-the-nerf-arms-race-with-self-firing-missiles/ | Escalate The NERF Arms Race With Self-Firing Missiles | Jenny List | [
"Toy Hacks"
] | [
"nerf",
"nerf dart",
"nerf missile"
] | NERF guns are a toy that appeals to adults and youngsters alike — if you’ve never had the chance to pelt your friends with safe and kid friendly foam darts in a surprise ambush, you haven’t lived. But just as with real-world weapons of the type superpowers put in shows of military strength, there’s an arms race in the ... | 2 | 2 | [
{
"comment_id": "6656463",
"author": "PEBKAC",
"timestamp": "2023-06-27T15:15:30",
"content": "Can’t deny that it’s cool – but also don’t think anyone in a nerf war would be cool with it.Now a nicer, perhaps revolver style launcher…",
"parent_id": null,
"depth": 1,
"replies": []
},
{... | 1,760,372,254.382874 | ||
https://hackaday.com/2023/06/26/get-your-leafy-meats/ | Get Your Leafy Meats | Brian McEvoy | [
"chemistry hacks",
"cooking hacks",
"green hacks"
] | [
"artificial organism",
"artifishal",
"bioengineering",
"biology",
"decelluralized",
"ghost",
"Leaf",
"mad science",
"non-vegan",
"recelluralized",
"scaffolding",
"spinach"
] | Some of us jokingly refer to our hobbies as “mad science,” but [Justin] from The Thought Emporium could be one Igor away from living up to the jibe. The
latest project
to come out of the YouTube channel, video also after the break, outlines a map for creating an artificial organism in their new lab. The purpose is to t... | 23 | 8 | [
{
"comment_id": "6656380",
"author": "MarB",
"timestamp": "2023-06-27T08:12:36",
"content": "Citizen scientists are unfortunately still underestimated. Especially by the scientific community. The biggest advantage that citizen scientists have is their independence.",
"parent_id": null,
"dept... | 1,760,372,254.337719 | ||
https://hackaday.com/2023/06/26/a-browser-approach-to-parsing/ | A Browser Approach To Parsing | Al Williams | [
"Software Development",
"Software Hacks"
] | [
"parser combinators",
"parsing",
"recursive descent"
] | There are few rites of programmer passage as iconic as writing your first parser. You might want to interpret or compile a scripting language, or you might want to accept natural-language-like commands. You need a parser. [Varunramesh] wants to show you
parser combinators
, a technique used to make practical parsers. B... | 3 | 3 | [
{
"comment_id": "6656369",
"author": "Juan-Chul McDonough",
"timestamp": "2023-06-27T05:33:11",
"content": "Fascinating problem and solution! Looking forward to the series and hoping it eases newcomers spelunking into this rabbit hole.Also just love to see actual CS theory on here, and that’s not (e... | 1,760,372,254.488485 | ||
https://hackaday.com/2023/06/26/never-drill-in-the-wrong-place-with-this-camera/ | Never Drill In The Wrong Place, With This Camera! | Jenny List | [
"Tool Hacks"
] | [
"microscope",
"pcb",
"pcb drill"
] | It’s fair to say that one of the biggest advances for the electronic constructor over the last decade or so has been the advent of inexpensive small-order PCB manufacture. That said, there are still plenty who etch their own boards, and for them perhaps the most fiddly part of the process comes in drilling holes accura... | 11 | 6 | [
{
"comment_id": "6656187",
"author": "MartyK'",
"timestamp": "2023-06-26T13:47:48",
"content": "My drill-press has built-in laser cross-hairs.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6656207",
"author": "wayt",
"timestamp": "2023-06-26... | 1,760,372,254.279415 | ||
https://hackaday.com/2023/06/26/how-hardware-testing-got-plugged-into-a-continuous-integration-framework/ | How Hardware Testing Got Plugged Into A Continuous Integration Framework | Donald Papp | [
"Microcontrollers",
"Software Development"
] | [
"automated testing",
"ci",
"continuous integration",
"custom",
"embedded",
"testing"
] | The concept of Continuous Integration (CI) is a powerful tool in software development, and it’s not every day we get a look at how someone integrated automated hardware testing into their system. [Michael Orenstein] brought to our attention the
Hardware CI Arena
, a framework for doing exactly that across a variety of ... | 5 | 5 | [
{
"comment_id": "6656161",
"author": "Snicker Pop Munchies",
"timestamp": "2023-06-26T11:29:20",
"content": "This is brilliant, we need more of these which support other form factors, but so far I like it. Happy that it’s open sourced as well. Would buy one immediately if it were on Tindie.",
"p... | 1,760,372,254.706906 | ||
https://hackaday.com/2023/06/25/a-more-conspicuous-computer-assistant/ | A More Conspicuous Computer Assistant | Bryan Cockfield | [
"Art"
] | [
"60s",
"amazon",
"blinkenlights",
"computer",
"display",
"echo",
"leds",
"sci-fi",
"style"
] | Back in the last century, especially in the ’40s to the ’60s, one of the major home decor trends was to install various home appliances, like the television or stereo, into its own piece of furniture. These were usually bulky, awkward, and incredibly heavy. And, since real life inspires art, most of the futuristic sci-... | 11 | 6 | [
{
"comment_id": "6656090",
"author": "Andrew",
"timestamp": "2023-06-26T05:50:15",
"content": "Dr. Theopolis.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6656127",
"author": "Ewald",
"timestamp": "2023-06-26T09:42:35",
"content": "... | 1,760,372,254.662735 | ||
https://hackaday.com/2023/06/25/hydrogels-for-bioelectronic-interfaces/ | Hydrogels For Bioelectronic Interfaces | Navarre Bartz | [
"Medical Hacks"
] | [
"bioelectrical",
"biology",
"electrode",
"Electrodermal"
] | Interfacing biological and electrical systems has traditionally been done with metal electrodes, but something flexible can be more biocompatible. One possible option is
3D-printed bioelectric hydrogels
.
Electrically conductive hydrogels based on conducting polymers have mechanical, electrical, and chemical stability ... | 1 | 1 | [
{
"comment_id": "6656107",
"author": "David",
"timestamp": "2023-06-26T07:30:14",
"content": "Resistance is futile…",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,372,254.228145 | ||
https://hackaday.com/2023/06/25/hackaday-links-june-25-2023/ | Hackaday Links: June 25, 2023 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links",
"Slider"
] | [
"amateur radio",
"Cassini",
"contests",
"dystopia",
"Enceladus",
"Europa",
"exobiology",
"hackaday links",
"handy talkie",
"phosphates",
"RoboCop",
"singapore",
"spurious emissions",
"supercapacitor",
"surplus",
"telepresence",
"uv k5"
] | Is it really a dystopian future if the robots are radio-controlled? That’s what came to mind reading
this article on a police robot out of Singapore
, complete with a breathless headline invoking
Black Mirror
, which is now apparently the standard by which all dystopias are to be judged. Granted, the episode with the r... | 15 | 9 | [
{
"comment_id": "6656055",
"author": "Hirudinea",
"timestamp": "2023-06-25T23:19:19",
"content": "ED-209 has really let himself go.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6656100",
"author": "Andrea Campanella",
"timestamp": "2023-06-... | 1,760,372,254.436266 | ||
https://hackaday.com/2023/06/25/watch-hides-gesture-controls-in-wristband/ | Watch Hides Gesture Controls In Wristband | Bryan Cockfield | [
"Wearable Hacks"
] | [
"accessibility",
"gesture control",
"smartwatch"
] | Over the last five to ten years, smart watches have become fairly ubiquitous, with the Apple Watch being among the most prominent of them. Not everyone wants or needs all of the capabilities of these devices, though; plenty are still opting for simpler devices which only have a few functions built into them. [Josh] has... | 0 | 0 | [] | 1,760,372,254.941943 | ||
https://hackaday.com/2023/06/25/this-camera-does-not-exist/ | This Camera Does Not Exist | Jenny List | [
"digital cameras hacks"
] | [
"blender",
"film camera",
"simulation"
] | Blender is a professional-grade 3D-rendering platform and much more, but it suffers sometimes from the just-too-perfect images that rendering produces. You can
tell
, somehow. So just how do you make a perfectly rendered scene look a little more realistic? If you’re [sirrandalot], you take a photograph. But not by taki... | 26 | 10 | [
{
"comment_id": "6655971",
"author": "Jouni",
"timestamp": "2023-06-25T17:30:51",
"content": "Amazing work but the grain doesn’t work in realistic way.Film grain isn’t just digital noise (well, usually it is because of the mediocre digitization techniques used). Grain is clumps of silver crystals an... | 1,760,372,255.004684 | ||
https://hackaday.com/2023/06/23/a-chess-ai-in-only-4k-of-memory/ | A Chess AI In Only 4K Of Memory | Bryan Cockfield | [
"Games"
] | [
"ai",
"analysis",
"atari",
"chess",
"engine",
"Stockfish",
"video chess"
] | The first computer to ever beat a reigning chess world champion didn’t do so until 1996 when a supercomputer built by IBM beat Garry Kasparov. But anyone who wasn’t a chess Grandmaster could have been getting beaten by chess programs as early as 1979 when Atari released one of the first ever commercially-available ches... | 22 | 9 | [
{
"comment_id": "6655482",
"author": "Michael Black",
"timestamp": "2023-06-23T20:45:13",
"content": "There was chessfor the KIM-1, 1K of RAM. Microchess by Ken Jennings.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655492",
"author": "Andy Pugh"... | 1,760,372,255.06263 | ||
https://hackaday.com/2023/06/23/the-voice-of-gps/ | The Voice Of GPS | Al Williams | [
"Radio Hacks",
"Space"
] | [
"cospas-sarsat",
"gps"
] | Tuning into a GPS satellite is nothing new. Your phone and your car probably do that multiple times a day. But [dereksgc] has been
listening to GPS voice traffic
. The traffic originates from COSPAS-SARSAT, which is a decades-old international cooperative of 45 nations and agencies that operates a worldwide search and ... | 7 | 4 | [
{
"comment_id": "6655454",
"author": "a_do_z",
"timestamp": "2023-06-23T18:41:14",
"content": "rouge => rogue?(delete this comment at will)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655477",
"author": "Alex",
"timestamp": "2023-06-23T20... | 1,760,372,255.495538 | ||
https://hackaday.com/2023/06/23/et-tu-red-hat/ | Et Tu, Red Hat? | Jonathan Bennett | [
"Current Events",
"Featured",
"Linux Hacks",
"News"
] | [
"gpl",
"linux",
"open source",
"red hat"
] | Something odd happened to
git.centos.org
last week. That’s the repository where Red Hat has traditionally published the source code to everything that’s a part of Red Hat Enterprise Linux (RHEL) to fulfill
the requirements of the GPL license
. Last week, those packages just stopped flowing. Updates weren’t being publis... | 94 | 23 | [
{
"comment_id": "6655433",
"author": "Tom Brusehaver",
"timestamp": "2023-06-23T17:20:37",
"content": "Typical IBM,buy companyMake sorry sighted decisionsPiss off customersKill product",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655443",
"author"... | 1,760,372,255.782476 | ||
https://hackaday.com/2023/06/23/hackaday-podcast-224-star-wars-holograms-tricorders-and-other-sensors/ | Hackaday Podcast 224: Star Wars Holograms, Tricorders, And Other Sensors | Al Williams | [
"Hackaday Columns",
"Podcasts"
] | [
"Hackaday Podcast"
] | Elliot and Al got together to discuss this week’s projects, and you’re invited! You’ll hear news about replaceable batteries in the EU, along with some news about the Hackaday Op Amp Challenge winners and the start of a new contest. This week’s choice hacks ranged from a Star Wars-style volumetric display, navigation u... | 0 | 0 | [] | 1,760,372,255.539226 | ||
https://hackaday.com/2023/06/23/commodore-floppy-drive-fixing-chaos/ | Commodore Floppy Drive Fixing Chaos | Maya Posch | [
"Retrocomputing"
] | [
"commodore",
"Commodore 1541",
"commodore 1571",
"Commodore 1581",
"floppy drive"
] | One of the best parts of retrocomputing is that you can obtain so many broken systems and peripherals for repairing and other assorted fun. This was the wholesome activity that [Drygol] embarked on recently with a gaggle of Commodore floppy disk drives that he obtained, involving a lot of
cleaning, soldering, calibrati... | 7 | 4 | [
{
"comment_id": "6655410",
"author": "Joshua",
"timestamp": "2023-06-23T15:24:01",
"content": "And if we’re at, let’s fix the drive electronics and install a light barrier for proper track 0 detection.The 1541-C board supports it by default, if I remember correctly.So it’s perhaps better to fix thi... | 1,760,372,255.875521 | ||
https://hackaday.com/2023/06/23/this-week-in-security-noauth-minidlna-and-ticket-to-ride/ | This Week In Security: NOAuth, MiniDLNA, And Ticket To Ride | Jonathan Bennett | [
"Hackaday Columns",
"News",
"Security Hacks",
"Slider"
] | [
"Fortigate",
"MiniDLNA",
"This Week in Security"
] | There’s
a fun logic flaw in how multiple online services handle OAuth logins
, that abuses Microsoft’s Azure Active Directory service to allow account takeovers. The problem is how a site handles the “Sign In With Microsoft” option, when there’s an existing account under the same email address. This is an irritating pr... | 4 | 1 | [
{
"comment_id": "6655481",
"author": "limroh",
"timestamp": "2023-06-23T20:45:00",
"content": "Important parenthesis?> while( (line req_buf + h->req_buflen)) &&> (h->req_chunklen = strtol(line, &endptr, 16) > 0) &&> (endptr != line) )Isn’t there on too many in the first line?It closes the “whi... | 1,760,372,255.824216 | ||
https://hackaday.com/2023/06/23/easy-modifications-for-inexpensive-radios/ | Easy Modifications For Inexpensive Radios | Bryan Cockfield | [
"Radio Hacks"
] | [
"BK4819",
"firmware",
"frequency range",
"Quansheng",
"radio",
"uv k5"
] | Over the past decade or so, amateur radio operators have benefited from an influx of inexpensive radios based around a much simpler design than what was typically commercially available, bringing the price of handheld dual-band or GMRS radios to around $20. This makes the hobby much more accessible, but they have gener... | 68 | 14 | [
{
"comment_id": "6655341",
"author": "mip",
"timestamp": "2023-06-23T11:29:53",
"content": "I just received one of these radios as the price of 14.24€ (regular 19.45€) including shipping (1w from CN to DE) was too good to resist.Firmware update using `k5prog` went flawlessly after some problems: Fir... | 1,760,372,255.649181 | ||
https://hackaday.com/2023/06/25/automate-away-the-drudgery-of-cnc-manufacturing/ | Automate Away The Drudgery Of CNC Manufacturing | Dan Maloney | [
"cnc hacks"
] | [
"cnc",
"manufacturing",
"plc",
"Pneumatics",
"router",
"work cell"
] | One of the keys to making money with manufacturing is to find something that you can make a lot of. Most small manufacturers have one or two “bread and butter” items that can be cranked out in quantity, which of course has a quality all its own. The problem with that approach, though, is that it runs the risk of being ... | 39 | 9 | [
{
"comment_id": "6655942",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-06-25T14:54:32",
"content": "I had to blow up the photo of the coaster about twice actual size to be able to read the logo. I guess if it gets properly painted, readability will improve.But, a good build!"... | 1,760,372,256.109963 | ||
https://hackaday.com/2023/06/25/flying-submarine-documentary-is-a-story-of-defied-assumptions/ | Flying Submarine Documentary Is A Story Of Defied Assumptions | Donald Papp | [
"Biography",
"classic hacks",
"Transportation Hacks"
] | [
"aviation",
"bio",
"cold war",
"flying submarine",
"patent",
"submarine",
"submersible"
] | Donald Reid had a passion for applying himself to challenging problems, and in many ways his life’s work was that of developing a prototype submersible aircraft — or flying submarine — for which his son Bruce was a test pilot. [Jesse Moody] brought to our attention
a fantastic documentary he created
(with a short tease... | 39 | 11 | [
{
"comment_id": "6655888",
"author": "sgmi",
"timestamp": "2023-06-25T12:01:59",
"content": "Inventors and submarines eh? It’s a fine aged milk.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655896",
"author": "IIVQ",
"timestamp": "2023-06-... | 1,760,372,256.189184 | ||
https://hackaday.com/2023/06/25/exploring-the-anatomy-of-a-linux-kernel-exploit/ | Exploring The Anatomy Of A Linux Kernel Exploit | Bryan Cockfield | [
"Software Hacks"
] | [
"buffer",
"exploit",
"io_uring",
"linux",
"local privilege escalation",
"memory",
"software",
"vulnerability",
"zero-day"
] | A lot of talk and discussion happens anytime a hardware manufacturer releases a new line of faster, more powerful, or more efficient computers. It’s easy to see better and better specifications and assume that’s where all the progress is made. But without improved software and algorithms, often the full potential of th... | 21 | 10 | [
{
"comment_id": "6655845",
"author": "pigster6",
"timestamp": "2023-06-25T08:19:47",
"content": "Why are you calling this zero-day in 2023? The CVE is from 2021, the article describing the vulnerability as well and the kernel was patched the same year.",
"parent_id": null,
"depth": 1,
"r... | 1,760,372,255.929375 | ||
https://hackaday.com/2023/06/24/retro-inspired-computer-case-hosts-mechanical-keyboard/ | Retro-Inspired Computer Case Hosts Mechanical Keyboard | Bryan Cockfield | [
"computer hacks"
] | [
"3d printed",
"case",
"keyboard",
"mechanical keyboard",
"Odroid XU4",
"raspberry pi 400",
"retro"
] | During the time in the 1980s when the personal computer was gaining steam as a household fixture, plenty of models shipped with the keyboard built in to the machine itself. This helped reduce costs, lower the physical footprint of the device, and arguably improved aesthetics. But as technology progressed, this type of ... | 5 | 5 | [
{
"comment_id": "6656018",
"author": "Steven-X",
"timestamp": "2023-06-25T19:57:52",
"content": "Reminds me of my Laser Compact XT, except i didn’t have the cool RED backlit keyboard. Or the graphics. or the memory. And I ran DOS 3.3",
"parent_id": null,
"depth": 1,
"replies": []
},
... | 1,760,372,256.236531 | ||
https://hackaday.com/2023/06/24/a-32-bit-risc-v-cpu-core-in-600-lines-of-c/ | A 32-Bit RISC-V CPU Core In 600 Lines Of C | Donald Papp | [
"Software Hacks"
] | [
"ANSI C",
"emulator",
"risc",
"RISC-V"
] | If you have ever wanted to implement a RISC-V CPU core in about 600 lines of C,
you’re in luck
! [mnurzia]’s
rv
project does exactly that, providing a simple two-function API.
Technically, it’s a user-level
RV32IMC
implementation in ANSI C. There are many different possible flavors of
RISC-V
, and in this case is a 32-... | 29 | 6 | [
{
"comment_id": "6655801",
"author": "Joshua",
"timestamp": "2023-06-25T02:33:18",
"content": "I think that’s really cool, albeit not very practical. 32-Bit is dead.https://hackaday.com/2021/06/06/is-32-bits-really-dead/RV64I would make more sense.That being said, the existing emulation code likely ... | 1,760,372,256.303198 | ||
https://hackaday.com/2023/06/24/ventbots-are-fans-of-hvac-and-home-automation/ | Ventbots Are Fans Of HVAC And Home Automation | Michael Shaub | [
"home hacks",
"News"
] | [
"3D printed case",
"3d printing",
"BMP280",
"ESP32",
"esphome",
"home automation",
"home-assistant",
"hvac",
"openscad",
"pc fan",
"smart home",
"temperature sensor"
] | [WJCarpenter] had a common HVAC problem; not all the rooms got to a comfortable temperature when the heater was working to warm up their home. As often happens with HVAC systems, the rooms farthest from the heat source and/or with less insulation needed a boost of heat in the winter and cooling in the summer too. While... | 21 | 13 | [
{
"comment_id": "6655837",
"author": "Naaa...zghul",
"timestamp": "2023-06-25T07:19:21",
"content": "What about a Roomba on Steroids. A Turret with a 2×2 Fan Array on it. A Stronger Battery. Who Rides throught all rooms and regulate the themperature.A Roomba build to rule the Air circulation in the ... | 1,760,372,256.366299 | ||
https://hackaday.com/2023/06/24/electronic-earrings-are-pcb-art-you-can-wear/ | Electronic Earrings Are PCB Art You Can Wear | Lewin Day | [
"LED Hacks"
] | [
"Earring",
"jewellery",
"led"
] | If there’s one area of the human anatomy we rarely try to draw the eye, it’s the ears. Nonetheless,
[DIY GUY Chris] has developed some LED earrings that should do exactly that.
The earrings are made using PCBs as the very body of the jewelry itself. The PCBs for each ear play host to eight WS2812 LEDs in a tiny 2020 fo... | 4 | 3 | [
{
"comment_id": "6655768",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-06-24T22:25:11",
"content": "I like what he did, but does the circuit/program run the LEDs efficiently?P.s. is the voice on the video synthesized speech?",
"parent_id": null,
"depth": 1,
"repli... | 1,760,372,257.042465 | ||
https://hackaday.com/2023/06/24/robodog-goes-free-thanks-to-unofficial-sdk/ | Robodog Goes Free Thanks To Unofficial SDK | Donald Papp | [
"Robots Hacks",
"Software Hacks"
] | [
"mini cheetah",
"MIT mini cheetah",
"python",
"robodog",
"robot",
"sdk"
] | What’s better than a pretty nice legged robot? One with an
alternate SDK version that opens up expensive features, of course
. The author didn’t like that the original SDK only came as pre-compiled binaries restricted to the most expensive models, so rolled up their sleeves and started writing a new one.
The manufactur... | 8 | 6 | [
{
"comment_id": "6655759",
"author": "SB5K",
"timestamp": "2023-06-24T21:40:40",
"content": "Better looking dog than Dr. Who’s K9“Affirmative”",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655766",
"author": "NoWay",
"timestamp": "2023-06-2... | 1,760,372,256.905061 | ||
https://hackaday.com/2023/06/24/open-source-and-giving-back/ | Open Source And Giving Back | Elliot Williams | [
"3d Printer hacks",
"Hackaday Columns",
"Rants"
] | [
"3d printing",
"newsletter",
"open source",
"Rant"
] | 3D printing YouTuber [Thomas Sanladerer] made a fairly contentious claim in a video about the state of open source hardware and software:
namely that it’s not viable “anymore”
. You can watch his video for more nuance, but the basic claim is that there are so many firms who are reaping the benefits of open designs and ... | 41 | 12 | [
{
"comment_id": "6655674",
"author": "RobotToaster",
"timestamp": "2023-06-24T14:16:39",
"content": "A lot of creality printers are open sourcehttps://github.com/Creality3DPrinting",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655680",
"author": "m... | 1,760,372,257.120004 | ||
https://hackaday.com/2023/06/24/an-open-source-firmware-for-cheap-geiger-counters/ | An Open Source Firmware For Cheap Geiger Counters | Al Williams | [
"Software Hacks",
"Tool Hacks"
] | [
"geiger counter",
"replacement firmware"
] | It is a time-honored tradition: buy some cheap piece of gear and rewrite the firmware to make it work better. [Gissio]
managed to do just that for a cheap FS2011 Geiger counter
. Apparently, the
firmware
will also work with some similar Chinese models, too.
The new firmware boasts an improved UI and multiple measuremen... | 11 | 4 | [
{
"comment_id": "6655652",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-06-24T12:28:44",
"content": "“SHALL WE PLAY A GAME?”-WOPR",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655679",
"author": "LordNothing",
"timest... | 1,760,372,256.85395 | ||
https://hackaday.com/2023/06/24/fpga-plays-tic-tac-toe/ | FPGA Plays Tic-Tac-Toe | Bryan Cockfield | [
"FPGA",
"Games"
] | [
"fpga",
"logic",
"state machine",
"tic-tac-toe"
] | As computers get more and more powerful and artificial intelligence algorithms improve, few games remain where the best humans can reliably beat their electronic counterparts. In chess this barrier was passed in 2005 with the last human win against a computer, and recently humans lost to computers at go. Simpler games ... | 18 | 7 | [
{
"comment_id": "6655606",
"author": "Joshua",
"timestamp": "2023-06-24T08:17:41",
"content": "‘A strange game.The only winning move is not to play.How about a nice game of chess?’",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655615",
"author": "A... | 1,760,372,256.962331 | ||
https://hackaday.com/2023/06/23/gumball-coaster-is-3d-printed-candy-fun/ | Gumball Coaster Is 3D-Printed Candy Fun | Lewin Day | [
"3d Printer hacks"
] | [
"candy",
"gumball",
"marble run"
] | Marble runs are fun enough on their own, but what if you could eat the marbles? Gumballs are the satisfying answer to that question. To that end,
[Adrian Seeley] whipped up a system for producing gumball runs programmatically for entertainment and candy dispensing purposes.
Track descriptions can be coded via basic ins... | 2 | 2 | [
{
"comment_id": "6655655",
"author": "heatgap",
"timestamp": "2023-06-24T12:40:14",
"content": "My nephews would dig this great idea!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6655796",
"author": "John",
"timestamp": "2023-06-25T01:51:22",
"co... | 1,760,372,256.805665 | ||
https://hackaday.com/2023/06/23/ecological-system-dynamics-for-computing/ | Ecological System Dynamics For Computing | Navarre Bartz | [
"computer hacks",
"Science"
] | [
"bacteria",
"biochemistry",
"biocomputing",
"biological neural network",
"biology",
"ecology",
"machine learning",
"recurrent neural network",
"reservoir computing"
] | Some of you may remember that the ship’s computer on
Star Trek: Voyager
contained bioneural gel packs. Researchers have taken us one step closer to a biocomputing future with a study on the potential of
ecological systems for computing
.
Neural networks are a big deal in the world of machine learning, and it turns out ... | 3 | 1 | [
{
"comment_id": "6655558",
"author": "TG",
"timestamp": "2023-06-24T03:51:41",
"content": "Maybe debugging this would give insights towards debugging similar black-box, chaotic systems. Other than that I don’t know nothin’",
"parent_id": null,
"depth": 1,
"replies": [
{
"co... | 1,760,372,257.001293 | ||
https://hackaday.com/2023/06/23/ikea-hack-kvart-into-mic-stand/ | IKEA Hack – Kvart Into Mic Stand | Navarre Bartz | [
"digital audio hacks"
] | [
"3d print",
"audio",
"ikea hacks",
"ikea lamp",
"mic",
"mic stand",
"microphone"
] | While audiophiles might spend gazillions of hours finely honing a microphone stand that isolates their equipment from the trials and perturbations of the world, most of us who use a microphone don’t need anything so elaborate. Hackaday contributing editor [Jenny List] hacked together some thrift store finds into a snaz... | 21 | 8 | [
{
"comment_id": "6655502",
"author": "Leonardo",
"timestamp": "2023-06-23T23:39:03",
"content": "The problem with these types of mounts is that they transmit all the vibrations. In practice, they don’t work.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "665... | 1,760,372,257.23739 | ||
https://hackaday.com/2023/06/23/powerful-water-pump-is-modular-in-nature/ | Powerful Water Pump Is Modular In Nature | Lewin Day | [
"3d Printer hacks"
] | [
"3d printed",
"pump",
"water pump"
] | If you’ve got one decently powerful DC motor, you could conceivably build a water pump. Gang up ten of them, however, and you could build something considerably more powerful,
as [akashv44] demonstrates.
The design is straightforward, relying on simple impeller pumps driven by RS-775 DC motors. The pump housings and im... | 28 | 10 | [
{
"comment_id": "6655347",
"author": "drall",
"timestamp": "2023-06-23T11:58:40",
"content": "It looks like it can move a decent amount of water, but it doesn’t develop a lot of head. Interesting nonetheless.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "66... | 1,760,372,257.299289 | ||
https://hackaday.com/2023/06/22/will-the-lilium-jet-work-a-deep-dive-into-the-physics-behind-evtol-aircraft/ | Will The Lilium Jet Work? A Deep-Dive Into The Physics Behind EVTOL Aircraft | Maya Posch | [
"Science",
"Transportation Hacks"
] | [
"commercial air travel",
"electric aircraft",
"electric airplane",
"eVTOL",
"vtol"
] | The Lilium Jet is a proposed eVTOL (electric Vertical Take Off and Landing) aircraft that the German company Lilium GmbH has claimed it will bring to the market ‘soon’, which would made it the first eVTOL aircraft in the world to enter into commercial service. As anyone who has any experience with VTOL knows, it’s a tr... | 27 | 11 | [
{
"comment_id": "6655273",
"author": "Tom Brusehaver",
"timestamp": "2023-06-23T05:23:16",
"content": "I was excited about evtol 5-7 years ago. With nothing really flying, just an occasional demo flight and everyone promising next year they will be certified commercial flying aircraft (does FAA part... | 1,760,372,257.184297 | ||
https://hackaday.com/2023/06/22/forgotten-chemical-photography/ | Forgotten Chemical Photography | Bryan Cockfield | [
"chemistry hacks"
] | [
"Chemistry",
"develop",
"forgotten",
"image",
"large format",
"negative",
"paper",
"photography",
"platinum"
] | Much to the chagrin of Eastman Kodak, the world has moved on from chemical photography into the realm of digital, thanks to the ease of use and high quality of modern digital cameras. There are a few photographers here and there still using darkrooms and various chemical processes to develop film, and the most common o... | 14 | 10 | [
{
"comment_id": "6655238",
"author": "Mangus Khan",
"timestamp": "2023-06-23T02:38:39",
"content": "Great post…my brother just switched to digital about a year ago. He still talks about the 35mm days. He gave our dad’s K-1000 to our nephew, who’s a pro, he keeps a memento more than uses it.",
"p... | 1,760,372,257.517134 | ||
https://hackaday.com/2023/06/22/portable-soldering-station-runs-on-drill-batteries/ | Portable Soldering Station Runs On Drill Batteries | Lewin Day | [
"Misc Hacks"
] | [
"dewalt",
"drill batteries",
"solder",
"soldering iron"
] | Power tool batteries are a convenient portable power supply for all manner of different things. [Zachary Goode] noticed that Ryobi was using them to power soldering irons, but no such tool existed in the DeWalt range.
Thus, he set about to build such a rig himself.
The build relies on a simple 3D-printed adapter to suc... | 37 | 13 | [
{
"comment_id": "6655199",
"author": "Dan (No, the OTHER one)",
"timestamp": "2023-06-22T23:43:33",
"content": "Dewalt might steal this idea, and then sue for patent infringement.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655319",
"author": "Up... | 1,760,372,257.590576 | ||
https://hackaday.com/2023/06/22/is-this-the-worlds-largest-dot-matrix-printer/ | Is This The World’s Largest Dot Matrix Printer? | Bryan Cockfield | [
"Transportation Hacks"
] | [
"dot matrix",
"lines",
"paint",
"pavement",
"printer",
"pump",
"solenoid",
"truck",
"water"
] | [RyderCalmDown] was watching a road painting vehicle lay down fresh stripes on the road one day and started thinking about the mechanism that lets it paint stripes in such a precise way. Effectively the system that paints the interspersed lines acts as a dot matrix printer that can only print at a single frequency. Wit... | 27 | 10 | [
{
"comment_id": "6655164",
"author": "David Beck",
"timestamp": "2023-06-22T20:07:49",
"content": "I saw something similar a few years ago. A guy built a self contained cart that used fuel injection valves to write with water. It has a number of text it would print but also printed out a never endin... | 1,760,372,257.693724 | ||
https://hackaday.com/2023/06/22/adapter-lets-digital-gamepads-work-on-the-tandy-color-computer/ | Adapter Lets Digital Gamepads Work On The Tandy Color Computer | Lewin Day | [
"Peripherals Hacks",
"Retrocomputing"
] | [
"color computer",
"nintendo",
"radioshack",
"tandy"
] | The Tandy Color Computer came with analog joysticks, quite unlike most computers and consoles of the early 1980s. Many games of the era actually worked best with digital input, so [Gadget Reboot] whipped up a converter board
to allow Nintendo gamepads to work with the computer.
The build relies on an
earlier breakout b... | 2 | 2 | [
{
"comment_id": "6655155",
"author": "Gravis",
"timestamp": "2023-06-22T19:12:51",
"content": "Perfect for operating your homemade submersible. ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6655428",
"author": "raynard",
"timestamp": "2023-06-23T16... | 1,760,372,257.630687 | ||
https://hackaday.com/2023/06/22/ask-hackaday-the-turing-test-is-dead-long-live-the-turing-test/ | Ask Hackaday: The Turing Test Is Dead: Long Live The Turing Test! | Al Williams | [
"Artificial Intelligence",
"Hackaday Columns",
"Rants",
"Slider"
] | [
"ai",
"chatbot",
"turing test"
] | Alan Turing proposed a test for machine intelligence that no longer works. The idea was to have people communicate over a terminal, with another real person and with a computer. If the computer is intelligent, Turing mused, most people will incorrectly identify the computer as a human. Clearly, with the advent of moder... | 89 | 27 | [
{
"comment_id": "6655114",
"author": "Derek Tombrello",
"timestamp": "2023-06-22T17:09:21",
"content": "I actually DO consider a dog – and most, if not all other animals – sentient.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655128",
"author": "... | 1,760,372,257.828828 | ||
https://hackaday.com/2023/06/20/repairing-a-25000-hp-workstation-to-run-pac-man/ | Repairing A $25,000 HP Workstation To RunPac-Man | Robin Kearey | [
"classic hacks",
"Repair Hacks",
"Retrocomputing"
] | [
"gpib",
"HP",
"HP9836C",
"workstation"
] | The microcomputer revolution of the 1970s and 1980s turned computers from expensive machines aimed at professionals into consumer products found in the average household. But there always remained a market for professional users, who bought equipment that was so far ahead of consumer gear it seemed to belong in a diffe... | 21 | 8 | [
{
"comment_id": "6654701",
"author": "Darren",
"timestamp": "2023-06-21T07:55:40",
"content": "You have a typo in the link – it’s a 9836.HP was still using these in the late 90s as part of a phase noise measurement system in their test & measurement support centre. I recently came across a photo of ... | 1,760,372,257.892524 | ||
https://hackaday.com/2023/06/20/blood-pressure-monitor-for-under-1/ | Blood Pressure Monitor For Under $1 | Bryan Cockfield | [
"Medical Hacks"
] | [
"app",
"blood pressure",
"camera",
"finger",
"flashlight",
"Imaging",
"medical",
"monitor",
"processing",
"smartphone"
] | Medical equipment is not generally known for being inexpensive, with various imaging systems usually weighing in at over a million dollars, and even relatively simpler pieces of technology like digital thermometers, stethoscopes, and pulse oximeters coming in somewhere around $50. As the general pace of technological i... | 22 | 6 | [
{
"comment_id": "6654651",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-06-21T02:20:47",
"content": "And the good news is, once the app records your blood pressure, it will store it on the cloud for insurance companies to track your health.(That’s why I stopped using blood pre... | 1,760,372,258.041542 | ||
https://hackaday.com/2023/06/20/modular-keyboard-and-custom-game-controller/ | Modular Keyboard And Custom Game Controller | Bryan Cockfield | [
"Games"
] | [
"controller",
"customizable",
"flight simulator",
"gamepad",
"gaming",
"hid",
"keyboard",
"modular",
"raspberry pi",
"usb"
] | Most video games, whether on console or PC, have standardized around either a keyboard and mouse or an analog controller of some sort, with very little differences between various offerings from the likes of Sony, Microsoft, Nintendo, or even Valve. This will get most of us through almost all video games, but for those... | 3 | 2 | [
{
"comment_id": "6654644",
"author": "limroh",
"timestamp": "2023-06-21T01:03:30",
"content": "Have Raspberry Pies become so rare R Pi Picos are now mistaken for the original? ;-)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6654694",
"author": "Jo... | 1,760,372,257.978758 | ||
https://hackaday.com/2023/06/20/a-volumetric-display-with-a-star-wars-look-and-feel/ | A Volumetric Display With AStar WarsLook And Feel | Dan Maloney | [
"hardware"
] | [
"benq",
"dlp",
"POV",
"sync",
"volumetric",
"voxel"
] | It may not exactly be what [Princess Leia] used to beg [Obi-Wan] for help, but
this
Star Wars
-inspired volumetric display
is still a pretty cool hack, and with plenty of extra points for style.
In some ways, [Maker Mac]’s design is a bit like a 3D printer for images, in that it displays slices of a solid model onto cl... | 18 | 10 | [
{
"comment_id": "6654600",
"author": "NoWay",
"timestamp": "2023-06-20T21:05:35",
"content": "looking at 3d on 2d looks 2d.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6654603",
"author": "Joshua",
"timestamp": "2023-06-20T21:18:32",
"content":... | 1,760,372,258.096134 | ||
https://hackaday.com/2023/06/20/hackaday-prize-2023-sleek-macro-pad-makes-2fa-a-little-easier/ | Hackaday Prize 2023: Sleek Macro Pad Makes 2FA A Little Easier | Dan Maloney | [
"contests",
"The Hackaday Prize"
] | [
"2023 Hackaday Prize",
"2FA",
"cherry mx",
"ESP32-S3",
"Feather",
"ntp",
"RFC 6238",
"salt",
"tft",
"totp",
"two-factor authenication",
"usb hid"
] | We all know the drill when it comes to online security — something you know, and something you have. But when the “something you have” is a two-factor token in a keyfob at the bottom of a backpack, or an app on your phone that’s buried several swipes and taps deep, inconvenience can stand in the way of adding that seco... | 1 | 1 | [
{
"comment_id": "6654630",
"author": "Erik",
"timestamp": "2023-06-20T23:27:20",
"content": "This looks neat and all, but if the alternative is a two-factor token “at the bottom of your backpack”, all you need is a lanyard.",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,372,257.939251 | ||
https://hackaday.com/2023/06/20/jack-in-the-2023-cyberdeck-challenge-starts-now/ | Jack In, The 2023 Cyberdeck Challenge Starts Now | Tom Nardi | [
"contests",
"Cyberdecks",
"Hackaday Columns",
"Slider"
] | [
"2023 Cyberdeck Challenge"
] | The modern laptop is truly a masterpiece of engineering, craming an incredible amount of processing power into a thin and lightweight package that can run for hours on its internal batteries, all for just a few hundred bucks. Combine that with the ubiquitous smartphone, and it’s safe to say that the state of mobile com... | 17 | 7 | [
{
"comment_id": "6654592",
"author": "Rob",
"timestamp": "2023-06-20T20:06:10",
"content": "Awesome! Was looking for an excuse to learn more about embedded linux, hope this is it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6654612",
"author": "Lee",
... | 1,760,372,258.155499 | ||
https://hackaday.com/2023/06/20/punched-cards-are-in-the-cloud-with-this-arduino/ | Punched Cards Are In The Cloud, With This Arduino | Jenny List | [
"Arduino Hacks"
] | [
"lisp",
"Punched Card",
"punched card reader"
] | Grizzled veterans of the computing industry will relate stories of submitting projects on stacks of punched cards, something those of us who stored their 8-bit works on audio cassettes could only imagine. But for those who fancy experimenting with the format
it’s still possible to make a basic card reader using LEDs an... | 15 | 6 | [
{
"comment_id": "6654558",
"author": "Mark",
"timestamp": "2023-06-20T16:50:35",
"content": "Oh, the dispair of dropping a box of cards with minutes to go before deadline.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6654567",
"author": "MartyK",
"ti... | 1,760,372,258.302056 | ||
https://hackaday.com/2023/06/21/dingoquadruped-is-a-cheap-canine-like-robot/ | DingoQuadruped Is A Cheap Canine-Like Robot | Lewin Day | [
"Robots Hacks"
] | [
"quadruped",
"robot",
"robot dog",
"robotics"
] | Robot humanoids are cool, but also a bit hard to make work as they only have two legs to stand on. Four-legged robots can be a bit more approachable.
The Dingo Quadruped aims to be just such an open-source platform for teaching and experimentation purposes.
The robot is based on the Stanford Pupper, a robot platform
we... | 9 | 5 | [
{
"comment_id": "6654885",
"author": "ono",
"timestamp": "2023-06-21T20:10:00",
"content": "I see a lot of rigid bipeds talking, but not much quadruped action … will it walk or will it blend ?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6654915",
... | 1,760,372,258.411004 | ||
https://hackaday.com/2023/06/21/3d-printed-machine-shows-how-braiding-is-done/ | 3D Printed Machine Shows How Braiding Is Done | Dan Maloney | [
"classic hacks",
"Engineering"
] | [
"braid",
"braiding",
"shuttle",
"spool",
"tensioner",
"thread"
] | If there’s something more fascinating than watching cleverly engineered industrial machines do their work, we don’t know what it could be. And at the top of that list has to be the machines that do braiding. You’ve probably seen them, with spools of thread or wire dancing under and around each other in an endless balle... | 8 | 6 | [
{
"comment_id": "6654872",
"author": "David Taylor",
"timestamp": "2023-06-21T18:57:42",
"content": "it’s called a maypole machine.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6654916",
"author": "metalman",
"timestamp": "2023-06-21T23:46:27",
"... | 1,760,372,258.365601 | ||
https://hackaday.com/2023/06/21/congratulations-to-our-op-amp-challenge-winners/ | Congratulations To Our Op-Amp Challenge Winners! | Elliot Williams | [
"contests",
"Current Events",
"Featured",
"Slider"
] | [
"analog",
"challenge",
"contest",
"op-amp"
] | The real world is analog, and the op-amp is the indispensable building block of many analog circuits. We wanted to give you analog fanatics out there a chance to shine and to encourage our digital brothers and sisters to dip their toes in the murky waters where ones and zeroes define the ends of a spectrum rather than ... | 15 | 6 | [
{
"comment_id": "6654871",
"author": "Andy",
"timestamp": "2023-06-21T18:52:56",
"content": "The winner proudly displaying a bodge wire just makes it better! Congrats to all!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6654888",
"author": "Leander... | 1,760,372,258.478782 | ||
https://hackaday.com/2023/06/21/no-frills-autonomous-lawnmower-gets-the-job-done/ | No Frills Autonomous Lawnmower Gets The Job Done | Danie Conradie | [
"home hacks",
"Robots Hacks"
] | [
"ardumower",
"ardupilot",
"autonomous lawnmower"
] | [Nathan] needed an autonomous mower to help on the farm, so he
built his own
without breaking the bank. It might not be the prettiest machine, but it’s been keeping his roads, fences and yard clear for over a year. In the video after the break, he gives a detailed breakdown of its build and function.
It’s built around ... | 19 | 11 | [
{
"comment_id": "6654830",
"author": "PEBKAC",
"timestamp": "2023-06-21T16:16:41",
"content": "All wheel drive, tank steer, and quite a long wheelbase!I can’t help but think that it’d turn smoother with an actual steering rack (or two wheel tank steer and some casters)",
"parent_id": null,
"... | 1,760,372,260.132218 | ||
https://hackaday.com/2023/06/21/in-praise-of-rpn-with-python-or-c/ | In Praise Of RPN (with Python Or C) | Al Williams | [
"Hackaday Columns",
"Slider",
"Software Development"
] | [
"c++",
"python",
"RPN"
] | HP calculators, slide rules, and Forth all have something in common: reverse polish notation or RPN. Admittedly, slide rules don’t really have RPN, but you work problems on them the same way you do with an RPN calculator. For whatever reason, RPN didn’t really succeed in the general marketplace, and you might wonder wh... | 39 | 20 | [
{
"comment_id": "6654789",
"author": "macsimski",
"timestamp": "2023-06-21T14:19:35",
"content": "Its Friden, not Frieden.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6654838",
"author": "Al Williams",
"timestamp": "2023-06-21T16:45:10",
... | 1,760,372,260.486387 | ||
https://hackaday.com/2023/06/21/fuel-cell-turns-pet-and-carbon-dioxide-into-useful-chemicals/ | Fuel Cell Turns PET And Carbon Dioxide Into Useful Chemicals | Al Williams | [
"Science"
] | [
"carbon dioxide",
"carbon sequestration",
"pet",
"syngas"
] | The University of Cambridge has a novel fuel cell design that can grab CO
2
from the atmosphere or industrial processes and, combined with waste PET plastic, provides syngas and glycolic acid, a product used in some cosmetics. You can
read about the device in a recent paper
.
The strange juxtaposition of CO
2
and PET i... | 17 | 7 | [
{
"comment_id": "6654744",
"author": "Grawp",
"timestamp": "2023-06-21T11:27:59",
"content": "We have had the ability to go from CO2, water and electricity (with no other consumable) to methane/gasoline/kerosine/ for almost a century. No PET needed.For example not so recent HELMETH project demonstra... | 1,760,372,260.348775 | ||
https://hackaday.com/2023/06/21/how-to-land-a-model-rocket-vertically/ | How To Land A Model Rocket Vertically | Jenny List | [
"Transportation Hacks"
] | [
"model rocket",
"rocket",
"vertical landing"
] | Perhaps most readers will remember when they saw the first SpaceX demonstration of a rocket stage landing vertically on the pad under control. It’s something of a shock to be reminded that their first suborbital demonstration “hops” were around a decade ago, and how quickly what was once so special has become commonpla... | 20 | 7 | [
{
"comment_id": "6654703",
"author": "BrightBlueJim",
"timestamp": "2023-06-21T08:16:26",
"content": "“The basics of the system revolve around a directed rocket nozzle”Well, technically, to revolve, you have to direct at least two rocket nozzles.",
"parent_id": null,
"depth": 1,
"replies... | 1,760,372,260.405845 | ||
https://hackaday.com/2023/06/22/dual-channel-pov-display-also-has-nixie-tubes/ | Dual Channel POV Display Also Has Nixie Tubes | Al Williams | [
"Microcontrollers"
] | [
"POV display",
"steampunk"
] | What’s a
tachyscope
? According to [Daniel Ross], it is an animated display from an alternate timeline circa 1880. The
real ones
, of course, didn’t have LEDs and microcontrollers. The control unit looks like an old-timey radio, complete with Nixie tubes. The spinning part has blue and white LEDs, each accepting data f... | 4 | 3 | [
{
"comment_id": "6655136",
"author": "a_do_z",
"timestamp": "2023-06-22T18:24:19",
"content": "Contraction -> contraption?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6655171",
"author": "ono",
"timestamp": "2023-06-22T20:38:01",
"content": "“he... | 1,760,372,260.295483 | ||
https://hackaday.com/2023/06/22/china-plans-its-own-megaconstellation-to-challenge-starlink/ | China Plans Its Own Megaconstellation To Challenge Starlink | Lewin Day | [
"Current Events",
"Featured",
"Original Art",
"Slider",
"Space"
] | [
"china",
"guowang",
"gw",
"military",
"satellite internet",
"Satellites",
"Starlink"
] | Satellite internet used to be a woeful thing. Early networks relied on satellites in geostationary orbits, with high latency and minimal bandwidth keeping user demand low. That was until Starlink came along, and provided high-speed, low-latency internet access using a fleet of thousands of satellites in Low Earth orbit... | 39 | 15 | [
{
"comment_id": "6655058",
"author": "Ostracus",
"timestamp": "2023-06-22T14:07:51",
"content": "Lessens less chances of them tampering with Starlink. Although the “great firewall from space” might be a problem.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": ... | 1,760,372,260.655944 | ||
https://hackaday.com/2023/06/22/the-many-robots-that-ventured-into-the-chernobyl-npp-4-reactor/ | The Many Robots That Ventured Into The Chernobyl NPP #4 Reactor | Maya Posch | [
"History",
"Robots Hacks"
] | [
"Chernobyl",
"Chornobyl",
"remote controlled robot"
] | Before the Chernobyl Nuclear Power Plant (ChNPP, spelled ‘Chornobyl’ in Ukrainian) disaster in 1986, there had been little need for radiation-resistant robots to venture into high-risk zones.
The MF-2 Joker, also used for clearing debris at the Chernobyl NPP #4 disaster site.
Yet in the aftermath of the massive steam e... | 14 | 4 | [
{
"comment_id": "6655046",
"author": "Ostracus",
"timestamp": "2023-06-22T13:35:52",
"content": "Robodescendents are going to look upon this bit of history and wonder where all the humans went.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655135",
... | 1,760,372,260.250005 | ||
https://hackaday.com/2023/06/22/inside-digital-calipers/ | Inside Digital Calipers | Al Williams | [
"Teardown",
"Tool Hacks"
] | [
"caliper",
"capacitive sensing"
] | If you do any kind of machining, 3D printing, or PCB layout, you probably have at least considered buying a pair of calipers. Old-fashioned ones had a dial and were mechanical devices, but lately, digital ones have become quite affordable. We keep meaning to tear a set of ours apart to see what’s inside, but thanks to ... | 51 | 9 | [
{
"comment_id": "6654982",
"author": "daveboltman",
"timestamp": "2023-06-22T08:26:01",
"content": "Thanks! Now I don’t have to pull mine apart 😁",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6655088",
"author": "Dude",
"timestamp": "2023-0... | 1,760,372,260.74332 | ||
https://hackaday.com/2023/06/21/a-pico-based-zx-spectrum-emulator/ | A Pico-Based ZX Spectrum Emulator | Lewin Day | [
"Retrocomputing"
] | [
"handheld",
"pi pico",
"Raspberry Pi Pico",
"rp2040",
"spectrum",
"ZX Spectrum"
] | The ZX Spectrum was a popular computer of the 8-bit era. Now, it’s possible to emulate this machine on a microcontroller so cheap that it’s literally been given away on the front cover of magazines.
Yes, we’re talking about the Pico ZX Spectrum project.
The project consists of all the necessary code to emulate a ZX Spe... | 23 | 5 | [
{
"comment_id": "6654981",
"author": "Marian",
"timestamp": "2023-06-22T08:22:23",
"content": "The project from the picture looks like it achieved something I tought was absolutely impossible:Building a computer with a worse keyboard than the original Spectrum.:-)A ZX Spectrum was my first computer.... | 1,760,372,260.195448 | ||
https://hackaday.com/2023/06/21/an-unexpected-upset-in-ev-charging-standards/ | An Unexpected Upset In EV Charging Standards | Navarre Bartz | [
"car hacks",
"News"
] | [
"CCS",
"chademo",
"electric vehicle",
"ev",
"EV charger",
"standards",
"tesla"
] | Last November, Tesla open-sourced parts of its charging infrastructure, not-so-humbly unveiling it as the North American Charging Standard (NACS). It’s finally taking off with
a number of manufacturers
signing on.
Companies launching “standards” based on their previously proprietary technology in opposition to an estab... | 52 | 11 | [
{
"comment_id": "6654934",
"author": "RW ver 0.0.3",
"timestamp": "2023-06-22T03:00:22",
"content": "Since it’s been brewing for months an involves wide collaboration and apparently no proprietary lock in, I am failing so see why it’s either unexpected or an upset.",
"parent_id": null,
"dept... | 1,760,372,260.57477 | ||
https://hackaday.com/2023/06/21/fpga-breakout-board-for-dip-package-shenanigans/ | FPGA Breakout Board For DIP Package Shenanigans | Lewin Day | [
"FPGA"
] | [
"breadboard",
"breakout board",
"fpga"
] | FPGAs are supremely flexible and powerful devices. However, they usually come in QFP or BGA packages that are altogether difficult for hobbyists to play with. The DIP-FPGA breakout board aims to solve that problem by using a carrier PCB
to put an advanced chip in a friendlier form factor.
The board itself fits a DIP-20... | 22 | 7 | [
{
"comment_id": "6654922",
"author": "Todd",
"timestamp": "2023-06-22T00:39:12",
"content": "Looks quite a bit like the Digilent Cmod boards. My favorite form-factor for playing with FPGAs.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6654952",
"author"... | 1,760,372,260.808393 | ||
https://hackaday.com/2023/06/18/the-remoteduino-nano-is-a-tiny-ir-remote-thats-truly-universal/ | The Remoteduino Nano Is A Tiny IR Remote That’s Truly Universal | Robin Kearey | [
"Peripherals Hacks"
] | [
"atmega328p",
"infrared",
"remote control",
"universal remote"
] | Universal remotes are extremely convenient if they work correctly. But setting them up can be quite a hassle: often, you need to browse through long lists of TV models, key in the codes on the remote with just a blinking LED as confirmation, and then pray that the manufacturer included the correct codes for all your eq... | 13 | 6 | [
{
"comment_id": "6654164",
"author": "Future Bob",
"timestamp": "2023-06-19T05:37:25",
"content": "I would love to see his implementation of the receiver IR. There does not seem to be a good drop in library for reading old remotes.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
... | 1,760,372,261.279921 | ||
https://hackaday.com/2023/06/18/too-much-git-try-gitless/ | Too Much Git? Try Gitless | Bryan Cockfield | [
"Software Development"
] | [
"development",
"Git",
"gitless",
"learn",
"open source",
"simplified",
"software",
"version control"
] | Git has been a powerful tool for software development and version control since the mid ’00s, gaining widespread popularity since then. Originally built by none other than Linus Torvalds for handling Linux kernel development, it’s branched out for use with all kinds of other projects. That being said, it is not the eas... | 48 | 19 | [
{
"comment_id": "6654135",
"author": "CMH62",
"timestamp": "2023-06-19T02:38:32",
"content": "If only Ann and Nancy had been born a little later, maybe we would have had “Gitless”! :-)https://youtu.be/BnI9MdpaMjA",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": ... | 1,760,372,261.415576 | ||
https://hackaday.com/2023/06/18/hackaday-links-june-18-2023/ | Hackaday Links: June 18, 2023 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links",
"Slider"
] | [
"architecture",
"Betelgeuse",
"calculator",
"carrier",
"colocation",
"conversion",
"fractional",
"fusion",
"hackaday links",
"imperial",
"infrastructure",
"metric",
"One Wilshire",
"retrocomputer",
"Supernova",
"telecom"
] | Will it or won’t it? That’s the question much on the minds of astronomers, astrophysicists, and the astro-adjacent this week as
Betelgeuse continued its pattern of mysterious behavior
that might portend a supernova sometime soon. You’ll recall that the red giant star in the constellation Orion went through a “great dim... | 19 | 9 | [
{
"comment_id": "6654099",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-06-19T00:19:31",
"content": "As far as drill bits are concerned, I get confused about which bit size for a pilot hole before tapping threads. I have seen mixtures of decimal, Fractional, and other sizes, s... | 1,760,372,261.874287 | ||
https://hackaday.com/2023/06/18/marvin-minskys-2500-logo-computer/ | Marvin Minsky’s 2500 Logo Computer | Dave Rowntree | [
"computer hacks"
] | [
"logo",
"marvin minsky",
"turtle"
] | [Prof. Marvin Minsky] is a very well-known figure in the field of computing, having co-founded the MIT AI lab, published extensively on AI and computational intelligence, and, let’s not forget, inventing the confocal microscope and, of course, the useless machine. But did you know he also was a co-developer of the firs... | 7 | 3 | [
{
"comment_id": "6654046",
"author": "David Given",
"timestamp": "2023-06-18T20:37:32",
"content": "Logo’s a hugely underrated language — underneath the turtle graphics it’s basically a stealth Lisp. It was done a huge disservice by all the 8-bit microcomputer ports that weren’t really powerful enou... | 1,760,372,261.654484 | ||
https://hackaday.com/2023/06/18/better-antennas-via-annealing-simulated/ | Better Antennas Via Annealing (Simulated) | Al Williams | [
"Radio Hacks"
] | [
"antennas",
"simulated annealing"
] | If you want to simulate a tic-tac-toe game, that’s easy. You can evaluate every possible move in a reasonable amount of time. Simulating antennas, however, is much harder. [Rosrislav] has been experimenting with using simulated annealing to
iterate antenna designs
, and he shares his progress in a recent blog post.
For... | 26 | 7 | [
{
"comment_id": "6654000",
"author": "Davidmh",
"timestamp": "2023-06-18T17:47:06",
"content": "Scipy has a lot of general purpose optimisation routines that are a bit more advanced than SA. Basin hopping or Differential Evolution often perform better, specially if you have the CPU cycles to spare.T... | 1,760,372,261.609058 | ||
https://hackaday.com/2023/06/18/a-simple-guide-to-bit-banged-i2c-on-the-6502/ | A Simple Guide To Bit Banged I2C On The 6502 | Dave Rowntree | [
"computer hacks",
"Software Hacks"
] | [
"6502",
"6532",
"bit banging",
"i2c",
"OLED SSD1306",
"riot"
] | We covered [Anders Nielsen]’s 65duino project a short while ago, and
now he’s back with an update video
showing some more details of bit-banging I
2
C using plain old 6502 assembly language.
Obviously, with such a simple system, there is no dedicated I
2
C interface hardware, so the programmer must take care of all the... | 5 | 3 | [
{
"comment_id": "6653951",
"author": "Wibble",
"timestamp": "2023-06-18T14:13:11",
"content": "Takes me back to 6502 bit banging on the i2c interface to philips teletext tuner modules to provide real time news feeds via serial :-) Really cool at the time!",
"parent_id": null,
"depth": 1,
... | 1,760,372,261.325421 | ||
https://hackaday.com/2023/06/18/detecting-meteors-with-sdr/ | Detecting Meteors With SDR | Al Williams | [
"Radio Hacks",
"Space"
] | [
"ham radio",
"meteor"
] | The simplest way to look for meteors is to go outside at night and look up — but it’s not terribly effective. Fortunately, there’s a better way: radio. With a software-defined radio and a little know-how from [Tech Minds], you can
easily find them
, as you can see in the video below.
This uses the UK meteor beacon we’v... | 10 | 7 | [
{
"comment_id": "6653932",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-06-18T12:54:41",
"content": "Meteor Scatter was used by trucking companies in the latter 1980s to track their trucks/trailers.",
"parent_id": null,
"depth": 1,
"replies": [
{
"com... | 1,760,372,261.543864 | ||
https://hackaday.com/2023/06/20/cottonization-making-hemp-and-flax-fibers-into-the-better-cotton/ | Cottonization: Making Hemp And Flax Fibers Into The Better Cotton | Maya Posch | [
"Featured",
"green hacks",
"Interest",
"Original Art",
"Science",
"Slider"
] | [
"bast fiber",
"cottonization",
"flax",
"hemp"
] | These days it’s hard to imagine that fabrics were ever made out of anything other than cotton or synthetic fibers, yet it wasn’t too long ago that hemp and flax-based fabrics — linen — were the rule rather than the exception. Cotton production has for centuries had the major disadvantages of requiring a lot of water an... | 16 | 9 | [
{
"comment_id": "6654544",
"author": "Dude",
"timestamp": "2023-06-20T14:53:53",
"content": "For the alternative using reclaimed cotton and wood pulp, see Lyocell. It’s uses less toxic chemicals than rayon and has superior properties compared to real cotton.https://en.wikipedia.org/wiki/Lyocell",
... | 1,760,372,261.762789 | ||
https://hackaday.com/2023/06/20/cosmic-ray-navigation/ | Cosmic Ray Navigation | Al Williams | [
"gps hacks",
"Science"
] | [
"cosmic ray",
"gps",
"muon",
"navigation"
] | GPS is a handy modern gadget — until you go inside, underground, or underwater. Japanese researchers want to build a GPS-like system with a twist. It uses cosmic ray muons, which can easily penetrate buildings to create high-precision navigation systems. You can read about it in
their recent paper.
The technology goes ... | 19 | 4 | [
{
"comment_id": "6654504",
"author": "Mathias",
"timestamp": "2023-06-20T11:28:32",
"content": "If you can determine the direction of the Muons, can you use that detector as a kind of sextant under water?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "665452... | 1,760,372,261.816468 | ||
https://hackaday.com/2023/06/20/creating-lithography-free-photonic-reprogrammable-circuits/ | Creating Lithography-Free Photonic Reprogrammable Circuits | Maya Posch | [
"FPGA",
"Science"
] | [
"photonics"
] | The field of photonics has seen significant advances during the past decades, to the point where it is now an integral part of high-speed, international communications. For general processing photonics is currently less common, but is the subject of significant research. Unlike most photonic circuits which are formed u... | 2 | 2 | [
{
"comment_id": "6654554",
"author": "Brian Byrne",
"timestamp": "2023-06-20T16:20:21",
"content": "Is this in fact programmable matter or the beginnings of it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6654933",
"author": "RW ver 0.0.3",
"timesta... | 1,760,372,261.69855 | ||
https://hackaday.com/2023/06/19/whats-in-a-slip-ring/ | What’s In A Slip Ring? | Jenny List | [
"Parts",
"Teardown"
] | [
"bearing",
"rotating part",
"slip ring"
] | We know that when
[Big Clive] puts up another video
, the chances are we’re in for another fascinating look into a piece of tech on his bench. The latest is a slip ring assembly, and he gives it a teardown to reveal its secrets.
For most of us, the only place we encounter a slip ring is in some electric motors or alter... | 20 | 9 | [
{
"comment_id": "6654479",
"author": "Redguy",
"timestamp": "2023-06-20T08:33:31",
"content": "I’ve looked at these before, they seem.to be ok, especially for their price. But they are of limited use because there is no hole through them for an axle. They need to end mounted.",
"parent_id": nul... | 1,760,372,261.930991 | ||
https://hackaday.com/2023/06/19/using-trash-to-keep-plastic-trash-out-of-oceans-by-kabooming-them/ | Using Trash To Keep Plastic Trash Out Of Oceans By Kabooming Them | Maya Posch | [
"green hacks"
] | [
"kaboom",
"plastic pollution"
] | For a few years now, [Richard] of Tropical Ocean Cleanup fame has been working hard to clean the Philippines of the plastic trash that litters everything, and washes down the canals and rivers into the ocean. Using nothing but what is essentially trash – old car tires, rope and empty soda bottles – he creates ‘kabooms’... | 7 | 6 | [
{
"comment_id": "6654442",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-06-20T02:29:02",
"content": "Grass roots effort, not corrupted by government funding or laws.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6654532",
"aut... | 1,760,372,261.972866 | ||
https://hackaday.com/2023/06/19/bringing-back-the-minitel/ | Bringing Back The Minitel | Bryan Cockfield | [
"Network Hacks"
] | [
"ESP32",
"France",
"Minitel",
"networking",
"phone",
"restoration",
"retrocomputing",
"telecom"
] | If you didn’t live in France in the 80s or 90s, it’s likely you missed out on one of the most successful computer networks in existence prior to the modern Internet. Known as Minitel, it was an online service available over existing phone lines that offered a connected computer terminal for users to do most things we a... | 16 | 6 | [
{
"comment_id": "6654417",
"author": "Erik Johnson",
"timestamp": "2023-06-19T23:37:28",
"content": "Welcome to the club!https://i.imgur.com/UvczV0N.jpg",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6654420",
"author": "irox",
"timestamp": "... | 1,760,372,262.459741 | ||
https://hackaday.com/2023/06/19/smart-sphere-or-magnetic-magic/ | Smart Sphere Or Magnetic Magic | Brian McEvoy | [
"how-to",
"Toy Hacks",
"Wireless Hacks"
] | [
"ball bearing",
"ball bot",
"bb",
"BB-8",
"desktop toy",
"illusion",
"inductive charger",
"line follower",
"line following robot",
"linefollowing",
"Marblevator"
] | Sometimes a coworker sees something on your desk, and they have to ask, “Where can I get one of those?” and that has to be one of the greatest compliments to a maker. [Greg Zumwalt] nailed it with his “
Marblevator Line Follower
.” Roboticists will immediately recognize a black line on a white surface, but this uses hi... | 10 | 5 | [
{
"comment_id": "6654392",
"author": "CMH62",
"timestamp": "2023-06-19T21:25:48",
"content": "Video should use RATT’s “Round and Round” ;)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6654418",
"author": "capo mafia",
"timestamp": "2023-06-19T23:39:1... | 1,760,372,262.300708 | ||
https://hackaday.com/2023/06/19/behind-the-x86-pipeline-curtain/ | Behind The X86 Pipeline Curtain | Al Williams | [
"Misc Hacks"
] | [
"risc",
"x86"
] | We’ve often heard that modern x86 CPUs don’t really execute x86 instructions. Instead, they decode them into RISC instructions that are easier to schedule, pipeline, and execute. But we never really looked into that statement to see if it is true. [Fanael] did, though, and the
results are very interesting
.
The post st... | 12 | 4 | [
{
"comment_id": "6654369",
"author": "combinatorylogic",
"timestamp": "2023-06-19T19:49:15",
"content": "Depends on how one define what RISC is. If you define separate load/store as RISC – then indeed mu-ops in all modern CPUs, x86 included, are RISC – OoO cannot even work otherwise.",
"parent_i... | 1,760,372,262.247567 | ||
https://hackaday.com/2023/06/19/keebin-with-kristina-the-one-with-the-mouse-cropad/ | Keebin’ With Kristina: The One With The Mouse-cropad | Kristina Panos | [
"Hackaday Columns",
"Peripherals Hacks",
"Slider"
] | [
"dyeing keycaps",
"keycap dyeing",
"keycaps",
"macro pad",
"macropad",
"mousecropad"
] | Okay, so you built a macropad or even a keyboard. What now? Well, most people use some kind of mouse to go along with it, but no one uses
a mouse like this creation by [Joe_Scotto]
.
This is the mouse no one asked for, and yet I think it’s pretty awesome for something that’s supposed to be a joke. Maybe it’s in the gre... | 12 | 10 | [
{
"comment_id": "6654335",
"author": "rclark",
"timestamp": "2023-06-19T17:38:03",
"content": "“ergonomic keyboard”I use them at work and at home. I had to, as my wrists started to get sore after a day at work many years ago now. As soon as I went to the ergonomic keyboard — all is well. At work ... | 1,760,372,262.404956 | ||
https://hackaday.com/2023/06/19/diy-picosatellites-hack-chat/ | DIY Picosatellites Hack Chat | Dan Maloney | [
"Hackaday Columns",
"Slider"
] | [
"Hack Chat"
] | Join us on Wednesday, June 21 at noon Pacific for the
DIY Picosatellites Hack Chat
with
Nathaniel Evry
!
Building a satellite and putting it in orbit was until very recently something only a nation had the resources to accomplish, and even then only a select few. Oh sure, there were a few amateur satellites that someho... | 10 | 5 | [
{
"comment_id": "6654310",
"author": "David",
"timestamp": "2023-06-19T16:43:05",
"content": "Quite a few amateurs have been launching picoballoons with various telemetry functions that can be easily monitored by anyone. Most don’t stay up long, but some have completed several circumnavigations of ... | 1,760,372,262.345074 | ||
https://hackaday.com/2023/06/19/rock-tumbler-doubles-as-ice-cream-maker/ | Rock Tumbler Doubles As Ice Cream Maker | Bryan Cockfield | [
"Tool Hacks"
] | [
"grinder",
"ice",
"ice cream",
"national geographic",
"rock",
"stones",
"tool",
"tumbler"
] | When working with limited space or even with limited funding, finding a tool that can do many things for less space or cost than its separate counterparts is a tempting option. The most common downside is that these tools often can’t perform as well as the single-purpose tools they replace, with the obvious example bei... | 13 | 5 | [
{
"comment_id": "6654287",
"author": "Michael Black",
"timestamp": "2023-06-19T15:29:54",
"content": "I’d worry that the grit from tumbling would land in the ice cream.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6654294",
"author": "come2",
... | 1,760,372,262.506492 | ||
https://hackaday.com/2023/06/19/review-infiray-p2-pro-thermal-camera/ | Review: InfiRay P2 Pro Thermal Camera | Tom Nardi | [
"Featured",
"Interest",
"Reviews",
"Slider",
"Tool Hacks"
] | [
"android",
"InfiRay",
"review",
"thermal camera"
] | It probably won’t surprise you to learn that Hackaday is constantly hounded by companies that want us to review their latest and greatest gadget. After all, getting us to post about their product is cheaper, easier, and arguably more effective than trying to come up with their own ad campaign. But if you’ve been with u... | 65 | 17 | [
{
"comment_id": "6654273",
"author": "helge",
"timestamp": "2023-06-19T14:25:53",
"content": "Thanks, hackaday. May the price-hiking begin.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6654299",
"author": "okto",
"timestamp": "2023-06-19T15... | 1,760,372,262.880526 | ||
https://hackaday.com/2023/06/19/using-sonar-to-measure-traffic-speeds/ | Using Sonar To Measure Traffic Speeds | Bryan Cockfield | [
"car hacks"
] | [
"microphone",
"radar",
"sonar",
"sound",
"speed",
"time correlation",
"vehicle"
] | One of the most common ways of measuring the speed of a vehicle is by using radar, which typically involves generating radio waves, directing them at a moving vehicle, and measuring the various ways that they return to the device. This is a tried-and-true method, but can be expensive and technically complex. [GeeDub] w... | 21 | 6 | [
{
"comment_id": "6654240",
"author": "Monsonite",
"timestamp": "2023-06-19T11:58:44",
"content": "This is such a neat project. I live in a narrow, residential street, with a 30mph limit, but the street is used as a rat-run, by drivers who habitually exceed the 30mph limit.Some arrogant drivers look ... | 1,760,372,262.568522 | ||
https://hackaday.com/2023/06/19/teardown-of-an-aircraft-video-symbol-generator/ | Teardown Of An Aircraft Video Symbol Generator | Dave Rowntree | [
"Teardown"
] | [
"avionics",
"british airways",
"Intel 8086",
"radiation hardening",
"teardown",
"video",
"zilog z180"
] | [Adrian Smith] recently
scored an avionics module taken from a British Aerospace 146 airliner
and ripped it open for our viewing pleasure. This particular aircraft was designed in the early 1980s when the electronics used to feed the various displays in the cockpit were very different from modern designs. This particul... | 17 | 9 | [
{
"comment_id": "6654214",
"author": "mime",
"timestamp": "2023-06-19T08:55:31",
"content": "I like this kind of content.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6654223",
"author": "Martina",
"timestamp": "2023-06-19T09:55:26",
"content": "... | 1,760,372,262.716856 | ||
https://hackaday.com/2023/06/16/hackaday-podcast-223-smoking-smart-meter-489-megapixels-and-unshredding-documents/ | Hackaday Podcast 223: Smoking Smart Meter, 489 Megapixels, And Unshredding Documents | Dan Maloney | [
"Hackaday Columns",
"Podcasts"
] | [
"Hackaday Podcast"
] | Elliot’s back from vacation, and Dan stepped into the virtual podcast studio with him to uncover all the hacks he missed while hiking in Italy. There was a lot to miss, what with a smart meter getting snuffed by a Flipper Zero — or was it? How about a half-gigapixel camera built out of an old scanner, or a sonar-aimed ... | 10 | 3 | [
{
"comment_id": "6653503",
"author": "a_do_z",
"timestamp": "2023-06-16T22:38:14",
"content": "Not seeing it on Google Podcasts.Episode 222 is latest one on there.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6653562",
"author": "Elliot Williams",
... | 1,760,372,262.762813 | ||
https://hackaday.com/2023/06/16/ikea-lack-table-becomes-extremely-affordable-diy-copy-stand/ | IKEA LACK Table Becomes Extremely Affordable DIY Copy Stand | Donald Papp | [
"digital cameras hacks"
] | [
"3d printed",
"copy stand",
"diy",
"ikea",
"photography"
] | A copy stand is a tool used to capture images of photos, artwork, books, and things of a similar nature. It holds a camera perpendicular to a large and flat surface, upon which the subject rests.
A threaded rod provides effective vertical adjustment.
They are handy, but there’s no need to spend a lot when [BlandPasta]’... | 14 | 7 | [
{
"comment_id": "6653438",
"author": "Chris Pepin",
"timestamp": "2023-06-16T15:47:32",
"content": "Making your own copy stand is cool, but making one out of a generally accessible table and some 3-D printed parts as well as making the instructions and files available is awesome!",
"parent_id": ... | 1,760,372,262.932913 | ||
https://hackaday.com/2023/06/16/this-week-in-security-acme-sh-leaking-leds-and-android-apps/ | This Week In Security: ACME.sh, Leaking LEDs, And Android Apps | Jonathan Bennett | [
"Hackaday Columns",
"News",
"Slider"
] | [
"Acme",
"bitwarden",
"This Week in Security"
] | Let’s Encrypt has made an enormous difference to the landscape of the web. The protocol used for authenticating and receiving certificates, ACME, has spawned quite a few clients of various flavors. Some are written in Rust, some in Python or Go, and a few in straight Bash shell script. One of those last ones,
acme.sh
,... | 3 | 2 | [
{
"comment_id": "6653934",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-06-18T13:10:22",
"content": "So I can download an app from the official Play Store that has spyware, or download an app from another website that has malware…",
"parent_id": null,
"depth": 1,
"... | 1,760,372,263.122569 | ||
https://hackaday.com/2023/06/16/persistence-pays-in-ti-99-4a-cassette-tape-data-recovery/ | Persistence Pays In TI-99/4A Cassette Tape Data Recovery | Dan Maloney | [
"Retrocomputing"
] | [
"audacity",
"audio",
"cassette",
"checksum",
"FSK",
"recovery",
"retrocomputing",
"tape",
"TI-99/4A"
] | In the three or four decades since storing programs on audio cassettes has been relevant, a lot of irreplaceable personal computing history has been lost to the ravages of time and the sub-optimal conditions in the attics and basements where tapes have been stored. Luckily, over that time we’ve developed a lot of tools... | 11 | 7 | [
{
"comment_id": "6653378",
"author": "Gregg Eshelman",
"timestamp": "2023-06-16T11:27:17",
"content": "The running java on a TI link is a repeat of the previous link to the megademo.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6653393",
"author": "johnr... | 1,760,372,262.983163 | ||
https://hackaday.com/2023/06/16/these-illusions-celebrate-exploiting-human-senses/ | These Illusions Celebrate Exploiting Human Senses | Donald Papp | [
"Art"
] | [
"art",
"illusion"
] | Illusions are perceptual experiences that do not match physical reality, and the
2023 Illusion of the Year contest
produced a variety of nifty ones that are worth checking out. A video for each is embedded below the break, but we’ll briefly explain each as well.
Some of the visual illusions play with perspective. One s... | 7 | 3 | [
{
"comment_id": "6653382",
"author": "Tom",
"timestamp": "2023-06-16T11:57:19",
"content": "My favourite illusion is the checker shadow illusion.https://en.m.wikipedia.org/wiki/Checker_shadow_illusionWe think our vision is what our retinas detect, but our retinas would know the chess squares are the... | 1,760,372,263.079093 | ||
https://hackaday.com/2023/06/15/hack-club-grants-encourage-open-source-pcb-designs-by-teens/ | Hack Club Grants Encourage Open Source PCB Designs By Teens | Joseph Long | [
"hardware",
"PCB Hacks"
] | [
"grants",
"open source hardware",
"printed circuit boards",
"STEM education",
"students"
] | [Hack Club] is a nonprofit network of coder and maker clubs for teenage high school students around the world. With an impressive reach boasting clubs in about 400 schools, they serve approximately 10,000 students. Their
OnBoard
program asserts, “Circuit boards are magical. You design one, we’ll print it!”
Any teenage ... | 6 | 1 | [
{
"comment_id": "6653359",
"author": "Mark Garton",
"timestamp": "2023-06-16T09:29:59",
"content": "In the UK teenagers under 18 are banned from buying tools in case they injure themselves so have a problem doing practical hobby interests like electronics or model making etc so are restricted to loo... | 1,760,372,263.024146 | ||
https://hackaday.com/2023/06/15/the-fake-moon-landing-quarantine/ | The Fake Moon Landing Quarantine | Al Williams | [
"Space"
] | [
"apollo",
"nasa",
"space"
] | We aren’t much into theories denying the moon landing around here, but [Dagomar Degroot], an associate professor at Georgetown University, asserts that the Apollo 11 quarantine efforts
were bogus
. Realistically, we think today that the chance of infection from the moon, of all places, is low. So claiming it was succes... | 43 | 16 | [
{
"comment_id": "6653282",
"author": "Tom Brusehaver",
"timestamp": "2023-06-16T02:13:23",
"content": "There was some worry.Mike Collins said multiple times, it was a good thing to go to the moon and return, but it could have been the worst thing.Tongue in cheek mostly.",
"parent_id": null,
... | 1,760,372,263.204634 | ||
https://hackaday.com/2023/06/18/learning-x86_64-assembly-by-building-a-gui-from-scratch/ | Learning X86_64 Assembly By Building A GUI From Scratch | Dave Rowntree | [
"Software Hacks"
] | [
"assembly",
"gui",
"X windows",
"x11",
"x86_64"
] | Some professional coders are absolutely adamant that learning to program in assembly language in these modern times is simply a waste of time, and this post is not for them. This is for the rest of us, who still think there is value in knowing at a low level what is going on, a deeper appreciation can be developed. [Ph... | 34 | 10 | [
{
"comment_id": "6653866",
"author": "Graham",
"timestamp": "2023-06-18T09:03:36",
"content": "I disagree with the comment about speed and modern compilers. We coded in assembler and could beat the compiler even a high optimization levels. An example is a routine with multiple exit points. The comp... | 1,760,372,263.449112 | ||
https://hackaday.com/2023/06/17/if-not-ethernet/ | If Not Ethernet… | Al Williams | [
"Retrocomputing"
] | [
"networking",
"retrocomputing"
] | It is hard to imagine today, but there was a time when there were several competing network technologies. There was Ethernet, of course. But you could also find token ring, DEC Net, EcoNet, and ARCNet. If you’ve never dug into ARCNet, [Retrobytes] has a
comprehensive history
you can watch that will explain it all.
Like... | 65 | 20 | [
{
"comment_id": "6653830",
"author": "David Lang",
"timestamp": "2023-06-18T05:33:27",
"content": "Arcnet also allowed longer cable runs and was more forgiving in the cabling than ethernet, but significantly slower.(this was in the pre-switch days where your entire ethernet network, end-to-end, was ... | 1,760,372,263.929738 | ||
https://hackaday.com/2023/06/17/ham-pairs-nicely-with-gmrs/ | Ham Pairs Nicely With GMRS | Bryan Cockfield | [
"Radio Hacks"
] | [
"2m",
"70cm",
"amateur",
"fcc",
"gmrs",
"ham",
"radio",
"repeater"
] | Ignoring all of the regulations, band allocations, and “best amateur practices,” there’s no real fundamental difference between the frequencies allocated to the Family Radio Service (FRS), the General Mobile Radio Service (GMRS), the Multi-Use Radio Service (MURS), and the two-meter and 70-centimeter bands allocated to... | 37 | 12 | [
{
"comment_id": "6653791",
"author": "The Commenter Formerly Known As Ren",
"timestamp": "2023-06-18T02:19:13",
"content": "Veeerrrrryyyy interesting!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6653805",
"author": "The Commenter Formerly Known As... | 1,760,372,263.371444 | ||
https://hackaday.com/2023/06/17/intel-to-ship-quantum-chip/ | Intel To Ship Quantum Chip | Al Williams | [
"computer hacks",
"News"
] | [
"quantum computing",
"qubit"
] | In a world of 32-bit and 64-bit processors, it might surprise you to learn that Intel is releasing a 12-bit chip. Oh, wait, we mean
12-qubit
. That makes more sense. Code named Tunnel Falls, the chip uses tiny silicon spin quantum bits, which Intel says are more advantageous than other schemes for encoding qubits. Ther... | 29 | 12 | [
{
"comment_id": "6653777",
"author": "Mystick",
"timestamp": "2023-06-18T00:25:34",
"content": "To be clear, what I got from the article is that Intel’s qubit solution is fermion half-odd spin(the particle attribute) measurement of a silicon atom(or a group of atoms with coherence) in a containment ... | 1,760,372,263.585698 | ||
https://hackaday.com/2023/06/17/3d-printering-treating-filament-like-paint-opens-wild-possibilities/ | 3D Printering: Treating Filament Like Paint Opens Wild Possibilities | Donald Papp | [
"3d Printer hacks",
"Art"
] | [
"3d printed",
"filament blending",
"filament painting",
"hueforge",
"lithophane"
] | New angles and concepts in 3D printing are always welcome, and we haven’t seen anything
quite
like [Horn & Rhode]’s
3D prints that do not look anything like 3D prints
, accomplished with an experimental tool called
HueForge
. The concept behind it is simple (though not easy), and the results can be striking when applie... | 27 | 16 | [
{
"comment_id": "6653745",
"author": "Derek Tombrello",
"timestamp": "2023-06-17T21:38:15",
"content": "Why does the one on the left so…. GOOD while the one on the right… meh?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6653746",
"author": "Thovth... | 1,760,372,263.519938 | ||
https://hackaday.com/2023/06/17/get-back-your-replaceable-batteries-thanks-to-the-eu/ | Get Back Your Replaceable Batteries, Thanks To The EU | Jenny List | [
"Phone Hacks"
] | [
"battery",
"eu",
"European Union",
"smartphone battery"
] | The world’s tech companies must harbour a hearty dislike for the European Union because when the many cogs of its bureaucracies turn, they find themselves with little choice but to follow or risk losing access to a huge and affluent market. There are a few areas of technology that don’t have some concessions to EU rule... | 125 | 23 | [
{
"comment_id": "6653686",
"author": "Pat",
"timestamp": "2023-06-17T17:09:54",
"content": "I’m sure many people’s responses will be “but I like my super-thin phone” but honestly if the only thing this accomplishes is getting rid of manufacturers gluing down those easy-to-bend lithium ion internal b... | 1,760,372,263.831515 | ||
https://hackaday.com/2023/06/17/get-in-over-your-head/ | Get In Over Your Head! | Elliot Williams | [
"Hackaday Columns",
"Rants"
] | [
"newsletter"
] | When you talk to hackers who’ve just finished an epic project, they’ll often start off with a very familiar refrain: “I had no idea what I was getting into.” And maybe they’ll even follow up with the traditional second line “If I knew how hard this was going to be, I probably wouldn’t have tried.” And that’s from peopl... | 19 | 7 | [
{
"comment_id": "6653632",
"author": "Julianne",
"timestamp": "2023-06-17T14:19:58",
"content": "Lately I’ve completed many of my projects, as opposed to earlier days when I’d frequently let feature creep get the best of me.The beauty of my main hobby, home automation is that it’s very modular and y... | 1,760,372,264.085839 | ||
https://hackaday.com/2023/06/17/kinefox-tracks-wildlife-for-a-lifetime/ | Kinefox Tracks Wildlife For A Lifetime | Navarre Bartz | [
"hardware",
"Science"
] | [
"energy harvester",
"gps tracker",
"MSG32 energy harvester",
"sensors",
"sigfox",
"wildlife",
"wildlife conservation"
] | Radio trackers have become an important part of studying the movements of wildlife, but keeping one running for the life of an animal has been challenging. Researchers have now developed a way to let wildlife recharge trackers
via their movements
.
With trackers limited to less than 5% of an animal’s total mass to prev... | 17 | 5 | [
{
"comment_id": "6653598",
"author": "Andrew",
"timestamp": "2023-06-17T11:52:11",
"content": "I suppose a nuclear-powered device was not considered.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6653605",
"author": "Ostracus",
"timestamp": ... | 1,760,372,263.983519 | ||
https://hackaday.com/2023/06/17/clock-project-doesnt-require-a-decision/ | Clock Project Doesn’t Require A Decision | Al Williams | [
"clock hacks"
] | [] | You decide to build a clock. The first thing you have you determine if it is going to be digital or analog. Or is it? If you build [
Ivanek240267]’s clock
, you can have both.
The digital portion uses an OLED display. The analog portion contains two rings of smart LEDs. The WiFi configuration is always an issue in proj... | 12 | 4 | [
{
"comment_id": "6653578",
"author": "Chiron",
"timestamp": "2023-06-17T09:15:06",
"content": "Great clock, but a ring of LEDs is hardly an analog display.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6653727",
"author": "Alex",
"timestamp"... | 1,760,372,264.032511 | ||
https://hackaday.com/2023/06/16/your-iphone-cant-do-what-this-wince-device-can/ | Your IPhone Can’t Do What This WinCE Device Can! | Jenny List | [
"computer hacks"
] | [
"HP",
"Journada",
"WinCE"
] | Most of us probably now have a smartphone, an extremely capable pocket computer — even if sometimes its abilities are disguised a little by its manufacturer. There are many contenders to the crown of first smartphone, but in that discussion it’s often forgotten that the first generally available such devices weren’t ph... | 44 | 18 | [
{
"comment_id": "6653547",
"author": "Ale",
"timestamp": "2023-06-17T05:35:58",
"content": "Some of those machines had a reset button too…Some others had a 640×480 screen, MIPS, SH-3",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6653549",
"author": "jpa",... | 1,760,372,264.167114 | ||
https://hackaday.com/2023/06/16/reliable-3d-printing-with-ceramic-slurry/ | Reliable 3D Printing With Ceramic Slurry | Bryan Cockfield | [
"3d Printer hacks"
] | [
"3d printer",
"ceramic",
"curing",
"infrared",
"research",
"support structures",
"ultraviolet",
"university"
] | 3D printing is at its most accessible (and most affordable) when printing in various plastics or resin. Printers of this sort are available for less than the cost of plenty of common power tools. Printing in materials other than plastic, though, can be a bit more involved. There are printers now for various metals and ... | 4 | 3 | [
{
"comment_id": "6653554",
"author": "Gregg Eshelman",
"timestamp": "2023-06-17T06:55:55",
"content": "If you want to ensure the fired ceramic 3D print is non-porous, apply a coating of glaze to it then fire it after firing the 3D print the first time. Do not just dunk the item in a tub of liquid gl... | 1,760,372,264.208541 |
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