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https://hackaday.com/2021/05/25/custom-music-box-cylinder-puts-a-spin-on-romance/ | Custom Music Box Cylinder Puts A Spin On Romance | Kristina Panos | [
"Musical Hacks"
] | [
"Music box",
"music box mechanism",
"python"
] | Music boxes are awesome little mechanical devices. These days, they even make some with slightly more modern tunes, like the Zelda and Star Wars themes. But they don’t have everything, of course — certainly not that one song from that TV series that [RandomPrototypes]’ girlfriend absolutely adores.
But it’s 2021, and ... | 9 | 3 | [
{
"comment_id": "6351635",
"author": "Hirudinea",
"timestamp": "2021-05-25T19:20:23",
"content": "Neat. I’d like to see him write a program that could take a MIDI file (yea I know old, but easier than an MP3) and spit out a file to print the song (or portion of it) as a music box cylinder.",
"pa... | 1,760,373,075.835488 | ||
https://hackaday.com/2021/05/25/technical-audacity-and-the-phone-book/ | Technical Audacity And The Phone Book | Al Williams | [
"Featured",
"History",
"Phone Hacks",
"Rants"
] | [
"phonebook"
] | I often think we — or maybe the people who control our money — lack the audacity to take on really big projects. It is hard to imagine laying the transatlantic cable for the first time today, for example. When I want a good example of this effect, I usually say something like: “Can you imagine going to a boardroom of a... | 74 | 28 | [
{
"comment_id": "6351547",
"author": "Skip Flem",
"timestamp": "2021-05-25T14:05:53",
"content": "And they also sent you a detailed bill of all the calls you made.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6351551",
"author": "uselessmore999",
"ti... | 1,760,373,076.21936 | ||
https://hackaday.com/2021/05/25/ram-fiddling-turns-vga-converter-into-video-synth/ | RAM Fiddling Turns VGA Converter Into Video Synth | Tom Nardi | [
"hardware",
"Video Hacks"
] | [
"circuit bending",
"composite video",
"vga",
"video synthesizer"
] | If you’re interested in circuit bent video but not sure where to start, the
excellent guide [LoFi Future] has come up with for modifying the cheap and readily available GBS-8100
VGA to composite converter would be a great first step. While we wouldn’t call it an easy modification, the circuit documentation and demonstr... | 2 | 2 | [
{
"comment_id": "6351698",
"author": "Ergotron",
"timestamp": "2021-05-25T23:09:21",
"content": "Would be interesting to use this as some kind of music visualizer. Could probably even use a microcontroller to automate the glitches by grounding out the pins to the GPIO, so it could loop through prese... | 1,760,373,075.59918 | ||
https://hackaday.com/2021/05/25/simple-micropython-game-is-a-30-minute-game-dev-course/ | Simple MicroPython Game Is A 30 Minute Game Dev Course | Donald Papp | [
"Games",
"Software Development"
] | [
"ardupy",
"galaga",
"micropython",
"retro",
"space invaders",
"wio terminal"
] | Sometimes, it’s really useful to watch a project’s parts come together one piece at a time in order to get a complete understanding and mental picture of the whole, and we found that to be the case with
this simple, retro-inspired sample game from [ezContents]
. (Video, embedded below.) The
code is on GitHub
but if you... | 7 | 2 | [
{
"comment_id": "6351509",
"author": "Osgeld",
"timestamp": "2021-05-25T11:54:37",
"content": "If only I could do this on a computer I already own instead of investing in yet more junk",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6351560",
"author"... | 1,760,373,075.788073 | ||
https://hackaday.com/2021/05/24/running-modern-linux-from-a-single-floppy-disk/ | Running Modern Linux From A Single Floppy Disk | Tom Nardi | [
"Linux Hacks",
"Software Development"
] | [
"3.5\" floppy disk",
"486",
"busybox",
"Embedded Linux",
"floppy disk",
"linux"
] | There was a time when booting Linux from a floppy disk was the norm, but of course, those days are long gone. Even if you still had a working 3.5 inch drive, surely the size of the modern kernel alone would far exceed the 1.44 MB capacity of the disks, to say nothing of all the support software required to create a usa... | 34 | 8 | [
{
"comment_id": "6351449",
"author": "Craig Hollabaugh",
"timestamp": "2021-05-25T06:13:53",
"content": "Oh yeah, booting from a floppy was common back then. In fact, I wrote many chapters of my Embedded Linux book using a single floppy. I’d park near the Ouray campground then boot a desktop with CR... | 1,760,373,075.739152 | ||
https://hackaday.com/2021/05/24/self-driving-or-mind-control-which-do-you-prefer/ | Self-Driving Or Mind Control? Which Do You Prefer? | Orlando Hoilett | [
"Medical Hacks",
"Science",
"Wearable Hacks"
] | [
"ai",
"artificial intelligence",
"biohack",
"Biopotential",
"electroencephalography",
"radio frequency"
] | We know you love a good biohack as much as we do, so we thought you would like
[Tony’s] brainwave-controlled RC truck
. Instead of building his own electroencephalogram (EEG), he thought he would use
NeuroSky’s MindWave
. EEGs are pretty complex, multi-frequency waves that require some fairly sophisticated circuitry an... | 9 | 5 | [
{
"comment_id": "6351421",
"author": "Somun",
"timestamp": "2021-05-25T02:32:30",
"content": "Didnt read the article yet. Just replying to the title, I would not like to get brainwashed so that leaves me with self driving. Just say no to mind control.",
"parent_id": null,
"depth": 1,
"re... | 1,760,373,075.881914 | ||
https://hackaday.com/2021/05/24/ground-effect-drone-flies-autonomously/ | Ground Effect Drone Flies Autonomously | Bryan Cockfield | [
"Transportation Hacks"
] | [
"arduino",
"ardupilot",
"autonomous",
"drone",
"ekranoplan",
"flight",
"ground effect",
"ground-effect vehicle",
"lake",
"rc"
] | There are a number of famous (yet fictional) sea monsters in the lakes and oceans around the world, but in the Caspian Sea one turned out to be real. This is where the first vehicles specifically built to take advantage of the ground effect were built by the Soviet Union, and one of the first was known as the Caspian S... | 14 | 4 | [
{
"comment_id": "6351405",
"author": "robocars",
"timestamp": "2021-05-25T01:21:44",
"content": "It doesn’t use an Arduino. It’s been a decade since the ArduPilot code actually ran on its namesake. Instead, it runs an a 32-bit ST-based Pixhawk autopilot",
"parent_id": null,
"depth": 1,
"... | 1,760,373,075.935256 | ||
https://hackaday.com/2021/05/24/optical-sensor-keeps-eye-on-wandering-saw-blade/ | Optical Sensor Keeps Eye On Wandering Saw Blade | Tom Nardi | [
"digital cameras hacks",
"Tool Hacks"
] | [
"CNC scroll saw",
"computer vision",
"optical sensor",
"Raspberry Pi HQ camera"
] | Over the last year or so, we’ve been checking in on the progress [Andrew Consroe] has been making with his incredible CNC scroll saw project. While we were already impressed with his first prototype version, he somehow manages to keep pushing the envelope forward with each new upgrade, and we’re always excited when one... | 17 | 7 | [
{
"comment_id": "6351323",
"author": "CRJEEA",
"timestamp": "2021-05-24T20:53:44",
"content": "Next step, a closed loop controller with his sensor instructing a series of magnets to tug the blade back into line, with a similarly high level of precision. A bit like the magnetic alignment in the lens ... | 1,760,373,075.660105 | ||
https://hackaday.com/2021/05/24/persistent-displays-with-uv-light/ | Persistent Displays With UV Light | Jenny List | [
"clock hacks",
"LED Hacks",
"The Hackaday Prize"
] | [
"2021 Hackaday Prize",
"glow in the dark",
"phosphorescence",
"uv"
] | This year’s Hackaday Prize has “Rethink Displays” as one of its first theme, and [Tucker Shannon] has given us his best shot on that subject with
a set of impressive displays that “write” on glow-in-the-dark material using ultra-violet light
. These materials glow for a while after UV illumination, so moving a light so... | 52 | 15 | [
{
"comment_id": "6351250",
"author": "ConsultingJoe",
"timestamp": "2021-05-24T18:35:05",
"content": "“PERSISTENT DISPLAYS WITH UV LIGTH”Such a hurry, you can’t proof read the title?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6351253",
"author": ... | 1,760,373,076.311888 | ||
https://hackaday.com/2021/05/24/starlink-a-review-and-some-hacks/ | Starlink: A Review And Some Hacks | Jonathan Bennett | [
"Featured",
"internet hacks",
"Reviews",
"Slider"
] | [
"IPv6",
"PoE",
"review",
"satellite internet",
"Starlink"
] | I could probably be described as a SpaceX enthusiast. I catch their launches when I can, and I’ve watched the development of Starship with great interest. But the side-effect of SpaceX’s reusable launch system is that getting to space has become a lot cheaper. Having excess launch capacity means that space projects tha... | 129 | 27 | [
{
"comment_id": "6351205",
"author": "Leonard",
"timestamp": "2021-05-24T17:21:18",
"content": "Any improvements in adjusted mtu?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6351272",
"author": "Jonathan Bennett",
"timestamp": "2021-05-24T... | 1,760,373,076.106931 | ||
https://hackaday.com/2021/05/24/a-high-torque-3d-printed-harmonic-drive/ | A High Torque 3D Printed Harmonic Drive | Danie Conradie | [
"Robots Hacks"
] | [
"3d printed",
"harmonic drive",
"robotic arm",
"strain wave gear"
] | Actuators that are powerful, accurate, compact, and cheap are like unicorns. They don’t exist. Yet this is what [3DprintedLife] needed for a robotic camera arm, so he developed a custom
3D printed high torque strain wave gearbox
to be powered by a cheap NEMA23 stepper motor.
Strain wave gears
, otherwise known as
harmo... | 5 | 2 | [
{
"comment_id": "6351174",
"author": "Brian Silverman",
"timestamp": "2021-05-24T15:55:58",
"content": "Nice build. What printer/plastic are you using?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6351252",
"author": "Gravis",
"timestamp":... | 1,760,373,076.451287 | ||
https://hackaday.com/2021/05/24/ask-hackaday-how-is-the-chip-shortage-affecting-you/ | Ask Hackaday: How Is The Chip Shortage Affecting You? | Jenny List | [
"Ask Hackaday",
"Current Events",
"News",
"Slider"
] | [
"chip shortage",
"parts",
"semiconductor"
] | Some friends of mine are designing a new board around the STM32F103 microcontroller, the commodity ARM chip that you’ll find in numerous projects and on plenty of development boards. When the time came to order the parts for the prototype, they were surprised to find that the usual stockholders don’t have any of these ... | 133 | 50 | [
{
"comment_id": "6351123",
"author": "Osgeld",
"timestamp": "2021-05-24T14:03:46",
"content": "It shut the factory I work at down for 2 weeks… Luckily I’m in systems engineering so free upgrade time for me",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6351124... | 1,760,373,076.875353 | ||
https://hackaday.com/2021/05/24/custom-keyfob-fixes-mazda-design-mistake/ | Custom Keyfob Fixes Mazda Design Mistake | Bryan Cockfield | [
"Transportation Hacks"
] | [
"3d print",
"car",
"keyfob",
"mazda",
"modification",
"pcb",
"shrink",
"small"
] | While Mazda has made some incredible advances in fuel efficient gasoline engines over the past few years, their design group seems to have fallen asleep at the wheel in the meantime, specifically in regards to the modern keyfob design. The enormous size and buttons on the side rather than the face are contrary to what ... | 60 | 19 | [
{
"comment_id": "6351089",
"author": "JanW",
"timestamp": "2021-05-24T11:22:54",
"content": "Well done video and explanation. Two critical things I see with his new design:1) no tab to attach it to a keyring/your keys. But maybe he doesn’t need it?!2) the copper tape. It is fine for a while but oxid... | 1,760,373,076.663252 | ||
https://hackaday.com/2021/05/24/cocktail-of-chemicals-makes-this-blueprint-camera-unique/ | Cocktail Of Chemicals Makes This Blueprint Camera Unique | Dan Maloney | [
"chemistry hacks",
"Misc Hacks"
] | [
"blueprint",
"camera",
"contact print",
"cyanotype",
"pigment",
"Prussian Blue",
"uv"
] | When you’re looking at blueprints today, chances are pretty good that what you’re seeing is anything but blue. Most building plans, diagrams of civil engineering projects, and even design documents for consumer products never even make it to paper, let alone get rendered in old-fashioned blue-and-white like large-forma... | 18 | 8 | [
{
"comment_id": "6351066",
"author": "Bob",
"timestamp": "2021-05-24T09:29:21",
"content": "Ammonium Dichromate is a carcinogen in addition to just toxicity. Read the MSDS before you even think about using this stuff.https://www.nj.gov/health/eoh/rtkweb/documents/fs/0097.pdfA mask is not enough pro... | 1,760,373,076.510665 | ||
https://hackaday.com/2021/05/23/python-runs-through-a-zombified-8-bit-avr/ | Python Runs Through A Zombified 8-Bit AVR | Stephen Ogier | [
"Microcontrollers"
] | [
"AVR",
"python",
"uart",
"UPDI"
] | As amazing as CircuitPython is, it hasn’t yet been ported to any 8-bit microcontrollers. [Chris Heo] was unsatisfied with his inability to use Python on his 8-bit ATmega4808 AVR, so he worked out a way to
zombify it and bend it to his will using Python on his PC
.
The trick to making this all work is the UPDI interface... | 16 | 7 | [
{
"comment_id": "6351037",
"author": "SetSceToAux",
"timestamp": "2021-05-24T06:24:43",
"content": "Good stuff. I have a general question that I would like to get other peoples opinion on. When doing register manipulation like in the above screenshot, what is your preferred way of setting the initia... | 1,760,373,076.713167 | ||
https://hackaday.com/2021/05/23/iridescent-rainbow-chocolate-just-add-diffraction-grating/ | Iridescent Rainbow Chocolate, Just Add Diffraction Grating! | Donald Papp | [
"Art",
"cooking hacks"
] | [
"chocolate",
"diffraction grating",
"holo-chocolate",
"sugar"
] | Chocolate plus diffraction grating equals rainbow chocolate
Here’s a great picture from [Jelly & Marshmallows] that shows off the wild effects of
melted chocolate poured onto a diffraction grating
. A diffraction grating is a kind of optical component whose micro-features act to disperse and scatter light. Diffraction ... | 15 | 8 | [
{
"comment_id": "6351014",
"author": "pelrun",
"timestamp": "2021-05-24T02:47:00",
"content": "> one side that is chock full of microscopic ridgesYou’re really satisfied with that one, I can tell.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6351022",
"a... | 1,760,373,076.566375 | ||
https://hackaday.com/2021/05/23/hackaday-links-may-23-2021/ | Hackaday Links: May 23, 2021 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links"
] | [
"amateur radio",
"CircuitPython",
"dummy load",
"Earth-Moon-Earth",
"EME",
"hackaday links",
"Karman vortex",
"mit",
"PCBWay",
"python",
"radar",
"radome",
"shenzhen",
"skyscraper",
"sla",
"ti-84"
] | The epicenter of the Chinese electronics scene drew a lot of attention this week as
a 70-story skyscraper started wobbling in exactly the way skyscrapers shouldn’t
. The 1,000-ft (305-m) SEG Plaza tower in Shenzhen began its unexpected movements on Tuesday morning, causing a bit of a panic as people ran for their lives... | 10 | 6 | [
{
"comment_id": "6350990",
"author": "Cbob",
"timestamp": "2021-05-23T23:22:30",
"content": "Such an interesting target for Tesla’s device. It’s good to see it’s been tuned for higher resolution",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6351103",
... | 1,760,373,076.923401 | ||
https://hackaday.com/2021/05/23/a-high-power-wood-rocket-in-5-days/ | A High Power Wood Rocket In 5 Days | Danie Conradie | [
"Space",
"Tech Hacks"
] | [
"national rocketry association",
"rocketry",
"xyla foxlin"
] | Getting started with model rocketry is relatively cheap and easy, but as you move up in high power rocketry, there are a few hoops to jump through. To be able to buy rocket motors larger than H (160 N·s / 36 lbf·s impulse) in the US, you need to get certified by the National Association of Rocketry. The main requiremen... | 30 | 11 | [
{
"comment_id": "6350965",
"author": "socksbot",
"timestamp": "2021-05-23T20:05:51",
"content": "I watched that this week; she knows her stuff and pays good attention to detail.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6350969",
"author": "Hirudinea"... | 1,760,373,076.989317 | ||
https://hackaday.com/2021/05/23/rc-car-gets-fan-assisted-downforce-to-slay-teslas-0-60-times/ | RC Car Gets Fan-Assisted Downforce To Slay Tesla’s 0-60 Times | Lewin Day | [
"Misc Hacks"
] | [
"fan car",
"R/C car",
"tesla"
] | Tesla have claimed that their upcoming new Roadster will post a sub-2 second 0-60mph time. While it’s backed up by little more than a shiny website at this stage,
[Engineering After Hours] took the number as a target to beat with his RC fan car build.
(Video, embedded below.)
We’ve seen an earlier prototype of this bui... | 26 | 15 | [
{
"comment_id": "6350935",
"author": "lthemick",
"timestamp": "2021-05-23T17:15:23",
"content": "How much resistance does a flat GoPro introduce?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6350941",
"author": "Mike",
"timestamp": "2021-05-23T17:45:... | 1,760,373,077.049 | ||
https://hackaday.com/2021/05/23/smart-guitar-will-practically-play-itself/ | Smart Guitar Will Practically Play Itself | Kristina Panos | [
"Musical Hacks"
] | [
"accessibility",
"fretboard",
"guitar"
] | Playing the guitar is pretty difficult to do, physically speaking. It requires a lot of force with the fretting hand to produce clear notes, and that means pressing a thin piece of metal against a block of wood until the nerve endings in your fingertips die off and you grow calluses that yearn to be toughened even furt... | 25 | 10 | [
{
"comment_id": "6350921",
"author": "Rogfanther",
"timestamp": "2021-05-23T14:57:15",
"content": "To answer the article´s question, seasoned players will probably stay with the traditional guitars. But if this can get a reasonable sound, it will be of great value for people that just want to enjoy ... | 1,760,373,077.11232 | ||
https://hackaday.com/2021/05/23/design-an-electronic-catan-board-in-a-day/ | Design An Electronic Catan Board In A Day | Rich Hawkes | [
"hardware"
] | [
"3D design",
"design",
"PCB design",
"settlers of catan"
] | One of the things that makers sometimes skip over is the design of the project that they’re creating. Some of us don’t do any design at all, we just pants it. The design part of making something
can
take quite a while – there is sketching to do, as well as 3d-modelling and PCB creation. [Sam March] wanted to try and cr... | 5 | 1 | [
{
"comment_id": "6350946",
"author": "Jan",
"timestamp": "2021-05-23T18:19:02",
"content": "“Some of us don’t do any design at all, we just pants it”The word design is overrated sometimes…You can buy a regular bathroom accessory that costs an acceptable amount of money.And you can buy some expensive... | 1,760,373,077.157726 | ||
https://hackaday.com/2021/05/23/modifying-lights-for-diy-ambiance/ | Modifying Lights For DIY Ambiance | Bryan Cockfield | [
"Microcontrollers"
] | [
"bulb",
"diy",
"diyhue",
"ESP8266",
"hue",
"lighting",
"philips",
"proprietary"
] | The ESP32 and ESP8266 spread like wildfire a few years ago due to their small form factor, low price, and wireless capability. They didn’t just take over the DIY scene, though. Plenty of mass market products began to incorporate these tiny chips as well, which means that there are some interesting pre-made devices arou... | 13 | 7 | [
{
"comment_id": "6350879",
"author": "IanS",
"timestamp": "2021-05-23T09:17:37",
"content": "Be careful removing the PCB using the method shown above. I have a similar bulb here where one of the LEDs broke up in the process.",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,373,077.331284 | ||
https://hackaday.com/2021/05/22/adding-remote-controls-to-a-blackmagic-studio-camera-without-breaking-the-bank/ | Adding Remote Controls To A Blackmagic Studio Camera Without Breaking The Bank | Maya Posch | [
"digital cameras hacks"
] | [
"blackmagic design",
"remote control",
"s.bus"
] | What to do when one ends up in the possession of a 4K studio camera, but without the requisite hardware and software to remotely control it? When [Glen Akins] ended up in this situation, he took the reasonable option here and
developed his own knob-based remote control
to adjust exposure and focus on the Blackmagic Des... | 2 | 2 | [
{
"comment_id": "6350922",
"author": "juli",
"timestamp": "2021-05-23T15:04:49",
"content": "Lanc expensive?. I thought was simple to build with arduino lanc libraries and it’s a serial interface similar to uart but different configuration. The problem it’s the codes are closed but you can find info... | 1,760,373,077.225106 | ||
https://hackaday.com/2021/05/22/affordable-transilluminator-helps-visualize-dna/ | Affordable Transilluminator Helps Visualize DNA | Al Williams | [
"Science"
] | [
"gel electrophoresis",
"illuminator",
"science"
] | If you want to examine the results of gel electrophoresis — and who doesn’t — you need a transilluminator. These devices can be quite pricey, though, so you might want to check out [Gabriel St-Pierre’s] plans to make an
affordable blue-light version
. You can see a video about the device below.
Using a UV filter, an Ar... | 2 | 1 | [
{
"comment_id": "6351042",
"author": "Ingenuity",
"timestamp": "2021-05-24T07:13:53",
"content": "Now I’ve seen it with my own eyes that legit comments are simply removed.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6351072",
"author": "Elliot Wil... | 1,760,373,077.266024 | ||
https://hackaday.com/2021/05/22/portable-drill-press/ | Portable Drill Press | Al Williams | [
"Tool Hacks"
] | [
"drill press",
"drillpress",
"power tools"
] | We aren’t sure that [John Heisz’s] build is really what we think of as a drill press, but it is a very portable way to convert
a regular drill into something like a drill press
. Your drill will probably be different, but you can follow along with his build in the video below.
On the face of it, it doesn’t seem like th... | 31 | 7 | [
{
"comment_id": "6350835",
"author": "Yeshua Watson",
"timestamp": "2021-05-23T00:04:17",
"content": "Am I missing something here, how is this different from the adapters you can buy on the cheap from most hardware store websites or Amazon?",
"parent_id": null,
"depth": 1,
"replies": [
... | 1,760,373,077.485847 | ||
https://hackaday.com/2021/05/22/a-close-look-at-usb-power/ | A Close Look At USB Power | Tom Nardi | [
"Peripherals Hacks"
] | [
"benchmark",
"electronic load",
"USB cable",
"usb charger",
"USB Power"
] | It’s not a stretch to say that most devices these days have settled on USB as their power source of choice. While we imagine you’ll still be running into the occasional wall wart and barrel jack for the foreseeable future, at least we’re getting closer to a unified charging and power delivery technology. But are all US... | 29 | 11 | [
{
"comment_id": "6350802",
"author": "Hirudinea",
"timestamp": "2021-05-22T20:29:35",
"content": "I would love a little test box, like a battery tester, that told me which usb power supplies and cables were good and which were crap, since I have so many floating around I could toss the crappy ones i... | 1,760,373,077.610215 | ||
https://hackaday.com/2021/05/22/yee-haw-full-set-of-cowboy-emojis-now-available/ | Yee Haw: Full Set Of Cowboy Emojis Now Available | Lewin Day | [
"Misc Hacks"
] | [
"cowboy",
"emoji",
"emoticon"
] | This cat looks like he plays bassoon in a jazz band.
Emojis are all well and good if you want to add a fun tiny picture to your textual communication to try and add some finer context or zing, but what if the appropriate tiny picture doesn’t accurately represent you or how you feel? Never fear, cowboys,
the emoji set y... | 8 | 4 | [
{
"comment_id": "6350800",
"author": "Hirudinea",
"timestamp": "2021-05-22T20:26:23",
"content": "Wait a minute, he has an emoji of a cow wearing a cowboy hat, but cows are girls! Is this one of those pronoun things?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_... | 1,760,373,077.536035 | ||
https://hackaday.com/2021/05/22/irc-will-never-die/ | IRC Will Never Die | Elliot Williams | [
"Hackaday Columns",
"News",
"Rants",
"Slider"
] | [
"Freenode",
"irc",
"newsletter",
"Rant"
] | The big kerfuffle in the open source world this week
surrounds the biggest IRC server operator, Freenode
. Wherever the dust settles, myriad important open source projects use Freenode’s IRC servers for their main channel of user feedback, and a number of vibrant communities call or called Freenode home. What you would... | 51 | 17 | [
{
"comment_id": "6350738",
"author": "JanW",
"timestamp": "2021-05-22T14:08:47",
"content": "TIL: kerfuffle is a proper English word.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350744",
"author": "Ostracus",
"timestamp": "2021-05-22T14:2... | 1,760,373,077.832307 | ||
https://hackaday.com/2021/05/22/3d-printed-earth-clock-is-cute-replica-of-our-delicate-planet/ | 3D Printed Earth Clock Is Cute Replica Of Our Delicate Planet | Lewin Day | [
"3d Printer hacks"
] | [
"clock",
"earth",
"earth clock"
] | Plenty of clocks around us are useful for telling us the precise hour, minute, and second of the day. However, few can give us an intuitive sense of how far away we are from the enveloping cloak of night.
This 3D printed Earth clock built by [Simon Rob] promises to do just that.
The build consists of an Arduino Nano dr... | 10 | 5 | [
{
"comment_id": "6350773",
"author": "Soc Rat",
"timestamp": "2021-05-22T17:26:10",
"content": "Cool idea but “The gear ratio isn’t perfect — [Simon] calculates its drift to be 20 hours over a year -but it’s close enough for the clock’s given purpose of being a cool thing.” So you’re drifting multi... | 1,760,373,077.742119 | ||
https://hackaday.com/2021/05/22/diy-insulating-nuts-and-bolts/ | DIY Insulating Nuts And Bolts | Chris Lott | [
"Tool Hacks"
] | [
"Bolts",
"nuts",
"threads",
"wooden threads"
] | [Rudi Schoenmackers] has devised a clever
set of custom 3D-printed jigs
that makes it easy to build your own wooden hex nuts and bolts. Well, easy if you have access to a woodworking shop with a router, bandsaw and belt sander.
You won’t be using these to mount your PCBs, however. They are pretty big — UNC 1½-6 threads... | 12 | 5 | [
{
"comment_id": "6350735",
"author": "e",
"timestamp": "2021-05-22T13:21:29",
"content": "The router with the 60 degree double angle cutter seems to have the cutter axis parallel to the threaded nut’s longitudinal axis, rather than inclined at the pitch of the thread.Presumably, for a small enough c... | 1,760,373,077.880857 | ||
https://hackaday.com/2021/05/21/lithophane-lamp-has-us-over-the-moon/ | Lithophane Lamp Has Us Over The Moon | Lewin Day | [
"3d Printer hacks"
] | [
"lamp",
"lithophane",
"moon"
] | Lithophanes are artistic creations which rely on the varying thickness of a material that is then backlit to reveal an image. While these were often made in porcelain in the past, these days we have the benefit of 3D printing on our side. The principle can be deftly applied to everything from flat planes to spheres,
wi... | 7 | 3 | [
{
"comment_id": "6350734",
"author": "Edward Nardella",
"timestamp": "2021-05-22T13:19:58",
"content": "Now make it have exaggerated surface texture based on the shape of the moon.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6350750",
"author": "Ren",
... | 1,760,373,077.691236 | ||
https://hackaday.com/2021/05/21/one-instruction-to-rule-them-all-c-compiler-emits-only-mov/ | One Instruction To Rule Them All: C Compiler Emits Only MOV | Al Williams | [
"Software Development",
"Software Hacks"
] | [
"c compiler",
"mov instruction",
"single instruction"
] | How many instructions do you need to successfully compile C code? Let’s see, you’d need some jump instructions, some arithmetic functions, and — of course — move instructions, right? Turns out you
only need the move instruction
, which — on x86, at least — is Turing complete.
While the effort is a bit tongue-in-cheek, ... | 17 | 9 | [
{
"comment_id": "6350681",
"author": "Joel",
"timestamp": "2021-05-22T03:17:18",
"content": "Congratulations, the gcc project finally is -O3 flag safe on all x86 cpus after several decades.;-)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6350682",
"autho... | 1,760,373,077.935811 | ||
https://hackaday.com/2021/05/21/custom-macro-keyboard-looks-good-in-wood/ | Custom Macro Keyboard Looks Good In Wood | Kristina Panos | [
"green hacks"
] | [
"cherry mx",
"cherry switches",
"keyboard",
"keyboard controller",
"oak",
"plywood",
"reuse"
] | There’s more than one way to make a mechanical macro pad, and this wooden wonder represents one of our favorites
. [Tauno Erik] had an old rubber dome rectangle keyboard lying around that still worked, but the poor thing was missing some of its caps. After salvaging the controller, [Tauno Erik] got to work on the tedio... | 5 | 4 | [
{
"comment_id": "6350685",
"author": "rok",
"timestamp": "2021-05-22T04:36:50",
"content": "It would look good If it would be in wood, instead of laminated glue",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6350688",
"author": "Newman",
"timestamp": "... | 1,760,373,077.984609 | ||
https://hackaday.com/2021/05/21/simple-probe-sniffs-out-emi/ | Simple Probe Sniffs Out EMI | Tom Nardi | [
"Arduino Hacks",
"Tool Hacks"
] | [
"arduino nano",
"electromagnetic interference",
"emi",
"emi probe"
] | Unable to account for the strange glitches he was seeing on his DIY CNC router, [Daniël Van Den Berg] wondered if his electronics might be suffering from some form of electromagnetic interference (EMI). So he did what any good hacker would do, and
rummaged through the parts bin to build an impromptu EMI detector
.
[Da... | 19 | 10 | [
{
"comment_id": "6350631",
"author": "Jace",
"timestamp": "2021-05-21T20:39:22",
"content": "…but did he find what was causing the glitches?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350700",
"author": "Giorgio Filardi",
"timestamp": "2... | 1,760,373,078.045505 | ||
https://hackaday.com/2021/05/20/reading-floppies-with-an-oscilloscope/ | Reading Floppies With An Oscilloscope | Al Williams | [
"Retrocomputing",
"Tool Hacks"
] | [
"BBC Micro",
"data recovery",
"floppy",
"floppy disc",
"floppy disk",
"floppy diskette",
"oscilloscope",
"siglent"
] | There’s a lot of data on magnetic media that will soon be lost forever, as floppies weren’t really made to sit in attics and basements for decades and still work. [Chris Evans] and [Phil Pemberton]
needed to read some disks
that reportedly contained source code for several BBC Micro games, including Repton 3. They turn... | 6 | 5 | [
{
"comment_id": "6350463",
"author": "yetihehe",
"timestamp": "2021-05-21T07:10:11",
"content": "> As a bonus, they can let us hear what the floppy data sounds like if you shift it into the human hearing range. Unsurprisingly, it sounds like an old modem.Semisurprisingly, most of data transfers hear... | 1,760,373,078.086505 | ||
https://hackaday.com/2021/05/20/project-starline-realizes-asimovs-3d-vision/ | Project Starline Realizes Asimov’s 3D Vision | Al Williams | [
"digital cameras hacks",
"google hacks",
"News",
"Virtual Reality"
] | [
"google",
"google starline",
"starline",
"trimensional personification",
"video conferencing",
"WebEx",
"zoom"
] | Issac Asimov wrote
Caves of Steel
in 1953. In it, he mentions something called trimensional personification. In an age before WebEx and Zoom, imagining that people would have remote meetings replete with 3D holograms was pretty far-sighted. We don’t know if any Google engineers read the book, but they are trying to cre... | 36 | 19 | [
{
"comment_id": "6350418",
"author": "Ostracus",
"timestamp": "2021-05-21T02:26:41",
"content": "Ah great. Add some “agony” to that booth and realize our Trek fantasies.Thing is these booths run smack into the desire for telecommuting because only the most monied (and hooked up) will be able to use ... | 1,760,373,078.265271 | ||
https://hackaday.com/2021/05/20/spherical-keyboard-build-leaves-hacker-well-rounded/ | Spherical Keyboard Build Leaves Hacker Well-Rounded | Kristina Panos | [
"Lifehacks",
"Microcontrollers",
"Misc Hacks"
] | [
"dactyl",
"dactyl keyboard",
"dactyl manuform",
"Elite-C",
"ergonomic keyboard",
"force feedback",
"mechanical keyboard",
"pointing device",
"QMK",
"stainless steel"
] | Often times we as hackers don’t know what we’re doing, and we sally forth and do it anyway. Here at Hackaday, we think that’s one of the best ways to go about a new project, and the absolute fastest way to learn a whole lot as you go. Just ask [Aaron Rasmussen] regarding this
spherical, standing 5×6 dactyl manuform key... | 20 | 11 | [
{
"comment_id": "6350382",
"author": "Joe.",
"timestamp": "2021-05-20T23:12:41",
"content": "Tik tok?!? Ugh, no thanks!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350410",
"author": "John",
"timestamp": "2021-05-21T01:43:31",
"co... | 1,760,373,078.329699 | ||
https://hackaday.com/2021/05/20/shop-exhaust-fan-salvaged-from-broken-microwave/ | Shop Exhaust Fan Salvaged From Broken Microwave | Tom Nardi | [
"home hacks",
"Parts"
] | [
"blower fan",
"exhaust",
"fan",
"fume extractor",
"microwave",
"microwave oven"
] | You don’t have to look hard to find a broken microwave. These ubiquitous kitchen appliances are so cheap that getting them repaired doesn’t make economical sense for most consumers, making them a common sight on trash day. But is it worth picking one of them up?
The [DuctTape Mechanic] certainly thinks so. In his lates... | 7 | 4 | [
{
"comment_id": "6350354",
"author": "drenehtsral",
"timestamp": "2021-05-20T20:53:51",
"content": "I have been constructing a home chemistry lab and found that an 80mm EDF intended for a RC jet makes an excellent exhaust fan. (Derating the motor’s maximum power by a factor of four by driving it fr... | 1,760,373,078.378109 | ||
https://hackaday.com/2021/05/20/roku-tv-hacked-to-run-philips-ambilight-setup/ | Roku TV Hacked To Run Philips Ambilight Setup | Lewin Day | [
"Misc Hacks"
] | [
"ambilight",
"hue",
"philips hue",
"roku",
"roku tv",
"smart tv",
"smart tv hacks",
"tv",
"tv hacks"
] | Roku TVs are interesting beasts, which use automatic content recognition on whatever you happen to be watching in order to market online streaming services direct to your loungeroom.
[Ammar Askar] realised that this technology could instead be used to feed data to a computer to run a Philips Ambilight setup natively fr... | 24 | 6 | [
{
"comment_id": "6350329",
"author": "mrehorst",
"timestamp": "2021-05-20T19:04:03",
"content": "Interesting hack, but can anyone tell me the point of ambilight?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350332",
"author": "jalnl",
"ti... | 1,760,373,078.682232 | ||
https://hackaday.com/2021/05/20/practical-sensors-the-hall-effect/ | Practical Sensors: The Hall Effect | Al Williams | [
"Hackaday Columns",
"hardware",
"Parts",
"Slider"
] | [
"edwin hall",
"hall effect",
"hall effect sensor",
"magnetometer",
"sensor"
] | Measuring a magnetic field can be very easy with some pretty low tech, or it can be very high tech. It just depends on what kind of measurement you need and how much effort you want to expend. The very simplest magnetic sensors are
reed switches
. These are basically relays with no coil. Instead of a coil, an external ... | 22 | 10 | [
{
"comment_id": "6350308",
"author": "Reactive Light",
"timestamp": "2021-05-20T17:33:26",
"content": "Could you improve the sensitivity by using a flux capacitor?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350309",
"author": "YGDES",
"t... | 1,760,373,078.613549 | ||
https://hackaday.com/2021/05/20/3d-printing-omni-balls-for-robot-locomotion/ | 3D Printing Omni-Balls For Robot Locomotion | Lewin Day | [
"3d Printer hacks"
] | [
"omniball",
"wheel",
"wheels"
] | Wheels are all well and good for getting around, but they only tend to rotate about a single axis. Omni-wheels exist, but they’re still a little too pedestrian for [James Bruton].
His latest project involved 3D printing custom omni-balls which roll in all directions.
(Video, embedded below.)
The omniball concept comes ... | 6 | 2 | [
{
"comment_id": "6350293",
"author": "Steven Clark",
"timestamp": "2021-05-20T16:56:58",
"content": "Next stop homemade Tachikomas",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350334",
"author": "Greg Graham",
"timestamp": "2021-05-20T19:2... | 1,760,373,078.419049 | ||
https://hackaday.com/2021/05/19/transparent-hard-drive-gives-peek-at-the-platters/ | Transparent Hard Drive Gives Peek At The Platters | Tom Nardi | [
"computer hacks",
"Peripherals Hacks"
] | [
"acrylic",
"hard drive",
"hdd",
"transparent"
] | Solid-state drives (SSDs) are all the rage these days, and for good reason. But that doesn’t mean the era of the spinning disk is over, as traditional mechanical hard drives still offer a compelling value for mass storage applications where access times aren’t as critical. But the components inside these “slow” mechani... | 29 | 10 | [
{
"comment_id": "6349964",
"author": "k-ww",
"timestamp": "2021-05-19T18:43:38",
"content": "BASF in the late 70’s / early 80’s made a 24Megabyte hard drive with a plexi cover in an 8″ floppy form factor. Unfortunately, the main body was out of a fiber reinforced plastic, so it both had to be shiel... | 1,760,373,078.808921 | ||
https://hackaday.com/2021/05/19/river-cleanup-aims-to-expand-in-earnest-to-tackle-plastic-pollution/ | River Cleanup Aims To Expand In Earnest To Tackle Plastic Pollution | Lewin Day | [
"Hackaday Columns",
"Interest",
"News",
"Original Art"
] | [] | The Great Pacific Garbage Patch is just one of a number of pollution disasters affecting the world’s oceans. All over the globe, huge amounts of plastic enter waterways every day, causing havoc in delicate ecosystems.
Heading up the charge to deal with the problem, The Ocean Cleanup have been working on a variety of pr... | 15 | 5 | [
{
"comment_id": "6349944",
"author": "Rok",
"timestamp": "2021-05-19T17:48:25",
"content": "It is a welcome solution for macroplastic, but i suspect it’s only the tip of the plastiberg, and smaller or just non-floating debris won’t be caught by this setup…",
"parent_id": null,
"depth": 1,
... | 1,760,373,078.737501 | ||
https://hackaday.com/2021/05/19/linus-akessons-a-mind-is-born-commodore-64-demo-in-just-256-bytes/ | Linus Åkesson’s ‘A Mind Is Born’ Commodore 64 Demo In Just 256 Bytes | Maya Posch | [
"Retrocomputing",
"Software Hacks"
] | [
"commodore 64",
"demo",
"demoscene"
] | It would be an understatement to say that the Commodore 64 demo scene is quite amazing. For those who are unaware, a ‘demo’ in this context is essentially a technological demonstration. Usually to show off particular effects or other (visual) properties that either push the limits of the platform on which it is being r... | 36 | 15 | [
{
"comment_id": "6349910",
"author": "Daniel Johnson",
"timestamp": "2021-05-19T16:12:05",
"content": "A single frame from the video is more bytes than the entire program was written with",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349957",
"auth... | 1,760,373,078.880853 | ||
https://hackaday.com/2021/05/19/raspberry-pi-rp2040-hands-on-experiences-from-an-stm32-perspective/ | Raspberry Pi RP2040: Hands-On Experiences From An STM32 Perspective | Maya Posch | [
"ARM",
"Featured",
"hardware",
"Microcontrollers"
] | [
"arm",
"arm cortex m0",
"CMSIS",
"raspberry pi",
"rp2040",
"stm32"
] | The release of the Raspberry Pi Foundation’s Raspberry Pi Pico board with RP2040 microcontroller has made big waves these past months in the maker community. Many have demonstrated how especially the two Programmable I/O (PIO) state machine peripherals can be used to create DVI video generators and other digital periph... | 97 | 21 | [
{
"comment_id": "6349887",
"author": "Greg A",
"timestamp": "2021-05-19T14:48:15",
"content": "i wish maya had gotten to the bottom of why the blinky doesn’t work, so we’d know which deficit was responsible for that stumbling block, and how severe it is…i’m really disappointed in RPF, now that i fin... | 1,760,373,079.024831 | ||
https://hackaday.com/2021/05/19/perfecting-paper-planes-peering-past-perspex-portals/ | Perfecting Paper Planes Peering Past Perspex Portals | Michael Shaub | [
"Science"
] | [
"3d print",
"cardboard",
"fan",
"maker faire",
"nasa",
"paper airplane",
"wind tunnel"
] | This wind tunnel
is a pile of junk and we love it! When making science and engineering accessible to kids, it really helps to show that it doesn’t require a fancy research lab. [Jelly & Marshmallows] show kids that it takes little more than cardboard, duct tape, and dumpster-diving to up your paper airplane game to NAS... | 11 | 6 | [
{
"comment_id": "6349847",
"author": "dgrc",
"timestamp": "2021-05-19T12:13:08",
"content": "Collect (or or model) everything you’ve ever seen tumble slowly from the sky.Maple seeds come most immediately to mind. Turn the tunnel upright (yeah, I know, easier said than done) and drive the fan with a ... | 1,760,373,079.077132 | ||
https://hackaday.com/2021/05/19/repairing-a-vintage-hp-9825-the-hard-way/ | Repairing A Vintage HP 9825 The Hard Way | Jonathan Bennett | [
"computer hacks",
"Repair Hacks",
"Retrocomputing"
] | [
"CuriousMarc",
"repair",
"retro computer"
] | [CuriousMarc] is at it again, this time trying to
undo the damage from a poorly designed power circuit, that fried the internals of his HP 9825 computer
. (Video, embedded below.)
The power supply on this particular model has a failure mode where a dying transistor can lead to 13 V on the 5 V line. This causes all the ... | 16 | 8 | [
{
"comment_id": "6349841",
"author": "Antron Argaiv",
"timestamp": "2021-05-19T11:46:52",
"content": "Sad to hear. HP was known for quality engineering, hopefully this power supply was an anomaly. On the upside, CuriousMarc is an excellent choice to fix it. And HP manuals are complete with circuit ... | 1,760,373,079.253906 | ||
https://hackaday.com/2021/05/18/omnibot-from-the-80s-gets-led-matrix-eyes-camera/ | Omnibot From The 80s Gets LED Matrix Eyes, Camera | Donald Papp | [
"Raspberry Pi",
"Robots Hacks"
] | [
"computer vision",
"eyes",
"led matrix",
"omnibot",
"raspberry pi",
"robot",
"Tomy"
] | [Ramin assadollahi] has been busy rebuilding and improving an Omnibot 5402, and the last piece of hardware he wanted to upgrade was
some LED matrix eyes and a high quality Raspberry Pi camera for computer vision
. An Omnibot was something most technical-minded youngsters remember drooling over in the 80s, and when [ram... | 8 | 4 | [
{
"comment_id": "6349808",
"author": "Gregg Eshelman",
"timestamp": "2021-05-19T06:48:04",
"content": "I’d like to see someone replace all the innards in an Androbot BOB. The Androbot’s wheels are the shape of a shallow, truncated cone and steeply angled. Along with the heavy, lead acid battery posi... | 1,760,373,079.202048 | ||
https://hackaday.com/2021/05/21/new-part-day-esp32-wroom-da/ | New Part Day: ESP32-WROOM-DA | Jenny List | [
"Parts",
"Slider"
] | [
"ESP32",
"espressif",
"wifi"
] | We’re always interested in the latest from the world’s semiconductor industry here at Hackaday, but you might be forgiven for noticing something a little familiar about today’s offering from Espressif. The
ESP32-WROOM-DA
has more than a passing resemblance to the ESP32-WROOM dual-core-microcontroller-with-WiFi module ... | 38 | 13 | [
{
"comment_id": "6350599",
"author": "Rok",
"timestamp": "2021-05-21T18:47:13",
"content": "ESP32-WROOM-DA ist hier !",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350608",
"author": "bastetfurry",
"timestamp": "2021-05-21T19:26:24",
... | 1,760,373,079.154196 | ||
https://hackaday.com/2021/05/21/retrotechtacular-double-for-nothing/ | Retrotechtacular: Double For Nothing | Jenny List | [
"Interest",
"Retrotechtacular",
"Software Hacks"
] | [
"disk doubler",
"ram doubler",
"scam",
"softram"
] | If you are in the market for web hosting in 2021 and you sign up with one of the cloud computing providers, you’ll soon see how the different resources are priced. Storage and bandwidth are cheap, while CPU time is expensive. This reflects the state of a modern computer, in which a typical disk drive now holds a teraby... | 52 | 20 | [
{
"comment_id": "6350576",
"author": "jonmayo",
"timestamp": "2021-05-21T17:29:16",
"content": "It was (and is) a problem with technology literacy. Computers are magic boxes and most people have no idea how they work. They’re unable to pose a simple thought experiment of what-if’s because they have ... | 1,760,373,079.339162 | ||
https://hackaday.com/2021/05/21/hackaday-podcast-119-random-robot-writing-slithering-snake-shenanigans-and-phased-array-phenomena/ | Hackaday Podcast 119: Random Robot Writing, Slithering Snake Shenanigans, And Phased Array Phenomena | Mike Szczys | [
"Hackaday Columns",
"Podcasts",
"Slider"
] | [
"Hackaday Podcast"
] | Hackaday editors Mike Szczys and Elliot Williams pick up on the neatest hacks you may have missed. We start off with another “What’s that Sound?” so put your geeky-ears to the test and win a Hackaday Podcast T-shirt. Here are a couple of classic hacks to bring you joy: music based on Markov chains, and a squiggly take ... | 2 | 1 | [
{
"comment_id": "6350936",
"author": "Lesley",
"timestamp": "2021-05-23T17:16:15",
"content": "Can we please talk about the building in Shenzhen?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6351074",
"author": "Elliot Williams",
"timestamp... | 1,760,373,080.952489 | ||
https://hackaday.com/2021/05/21/perfecting-a-3d-printed-camera-motion-control-rig/ | Perfecting A 3D Printed Camera Motion Control Rig | Tom Nardi | [
"Arduino Hacks",
"digital cameras hacks"
] | [
"camera rig",
"motion control",
"slip rings",
"stepper motor"
] | If you’ve ever watched one of those high production value YouTube videos and wondered how they’re able to get those smooth shots where the camera seems to be spinning around an object, you were probably looking at the product of an motorized camera motion system. There’s no question these rigs can produce visually stri... | 10 | 3 | [
{
"comment_id": "6350573",
"author": "Andy",
"timestamp": "2021-05-21T17:14:39",
"content": "Hey Tom,thank you so much for the article!This made my entire week!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350633",
"author": "Tenkara Anarchist",
... | 1,760,373,081.408119 | ||
https://hackaday.com/2021/05/21/this-week-in-security-watering-hole-attackception-ransomware-trick-and-more-pipeline-news/ | This Week In Security: Watering Hole Attackception, Ransomware Trick, And More Pipeline News | Jonathan Bennett | [
"Hackaday Columns",
"News",
"Security Hacks",
"Slider"
] | [
"pipeline",
"ransomware",
"This Week in Security"
] | In what may be a first for watering hole attacks, we’ve now seen
an attack that targeted watering holes
, or at least water utilities. The way this was discovered is a bit bizarre — it was found by Dragos during
an investigation into the February incident at Oldsmar, Florida
. A Florida contractor that specializes in w... | 11 | 5 | [
{
"comment_id": "6350543",
"author": "Alice Lalita Heald",
"timestamp": "2021-05-21T14:20:01",
"content": "Ironic AXA case, hope they learn :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6350551",
"author": "Piotrsko",
"timestamp": "2021-05-21T14:44... | 1,760,373,080.997845 | ||
https://hackaday.com/2021/05/21/building-a-quick-and-dirty-rc-mower-with-fpv/ | Building A Quick And Dirty RC Mower With FPV | Lewin Day | [
"Misc Hacks"
] | [
"FPV",
"grass",
"mower"
] | Mowing the lawn can be a tedious job. Tired of the effort involved,
[i did a thing] decided to enlist the help of [Makers Muse] to build a radio controlled mower instead to make the backyard chore a little more interesting.
(Video, embedded below.)
The mowing itself is done by a typical push-along garden mower with a g... | 4 | 2 | [
{
"comment_id": "6350550",
"author": "UnderSampled",
"timestamp": "2021-05-21T14:41:28",
"content": "I guess you could say they used an Inertial Dampener for image stabilization.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350553",
"author": "ome... | 1,760,373,081.267009 | ||
https://hackaday.com/2021/05/21/with-a-big-enough-laser-the-world-is-your-sensor/ | With A Big Enough Laser, The World Is Your Sensor | Tom Nardi | [
"Laser Hacks",
"Tech Hacks"
] | [
"big data",
"laser",
"retroreflector",
"sensing",
"vibration"
] | It’s difficult to tell with our dull human senses, but everything around us is vibrating. Sure it takes more energy to get big objects like bridges and houses humming compared to a telephone pole or mailbox, but make no mistake, they’ve all got a little buzz going on. With their new automated laser, the team behind Vib... | 31 | 9 | [
{
"comment_id": "6350470",
"author": "Rick",
"timestamp": "2021-05-21T08:13:58",
"content": "Point it at a window and listen in to anyone. Nice surveillance network.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350487",
"author": "jwrm22",
... | 1,760,373,081.17874 | ||
https://hackaday.com/2021/05/18/fir-filters-for-xilinx/ | FIR Filters For Xilinx | Al Williams | [
"FPGA"
] | [
"digital signal processing",
"dsp",
"FIR",
"FIR filter",
"fpga",
"mac",
"verilog"
] | Digital filters are always an interesting topic, and they are especially attractive with FPGAs. [Pabolo] has been working with them in a series of blog posts. The
latest
covers an 8th order FIR filter in Verilog. He covers some math, which you can find in many places, but he also shows how an implementation maps to DS... | 7 | 3 | [
{
"comment_id": "6349800",
"author": "macsimski",
"timestamp": "2021-05-19T05:25:00",
"content": "For the first time for me on hackaday I had no idea what this all is about and had to look up all acronyms except fpga. I feel youg again.",
"parent_id": null,
"depth": 1,
"replies": [
... | 1,760,373,081.357026 | ||
https://hackaday.com/2021/05/18/toolchanging-printers-get-a-nozzle-hanky-like-no-other/ | Toolchanging Printers Get A Nozzle Hanky Like No Other | Sonya Vasquez | [
"3d Printer hacks",
"News"
] | [
"3d printer",
"3D printer nozzle",
"multimaterial",
"nozzle cleaning",
"toolchanger",
"toolchanging"
] | When it comes to toolchanging 3D printers, idle nozzles tend to drool. Cleaning out that nozzle goo, though, is critical before switching them into use. And since switching nozzles can happen hundreds of times
per print
, having a rock-solid cleaning solution is key to making crisp clean parts. [Kevin Mardirossian] was... | 7 | 2 | [
{
"comment_id": "6349799",
"author": "Drew",
"timestamp": "2021-05-19T05:11:57",
"content": "Awesome work! I love that 3d printers run on GCODE so they’re so easy to extend and modify. Imagine if the most popular 3d printers were made by google and used some proprietary closed source system for slic... | 1,760,373,081.449594 | ||
https://hackaday.com/2021/05/18/send-old-fashioned-pager-messages-with-new-fashioned-hardware/ | Send Old-Fashioned Pager Messages With New-Fashioned Hardware | Bryan Cockfield | [
"Wireless Hacks"
] | [
"34u4",
"antenna",
"arduino",
"battery",
"communications",
"pager",
"pcb",
"pocket",
"POCSAG",
"solder"
] | In a world of always-connected devices and 24/7 access to email and various social media and messaging platforms, it’s sometimes a good idea to take a step away from the hustle and bustle for peace of mind. But not
too
big of a step. After all, we sometimes need some limited contact with other humans, so that’s what [E... | 5 | 4 | [
{
"comment_id": "6349697",
"author": "tryst",
"timestamp": "2021-05-18T20:48:07",
"content": "Pagers are funhttps://hackaday.io/project/160997-the-wireless-badger",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6349772",
"author": "n1kt0",
"timestamp": ... | 1,760,373,081.220914 | ||
https://hackaday.com/2021/05/18/making-minty-fresh-music-with-markov-chains-the-after-eight-step-sequencer/ | Making Minty Fresh Music With Markov Chains: The After Eight Step Sequencer | Adam Zeloof | [
"Arduino Hacks",
"hardware",
"Machine Learning",
"Musical Hacks",
"News"
] | [
"arduino",
"machine learning",
"max msp",
"ml",
"step sequencer"
] | Step sequencers are fantastic instruments, but they can be a little, well, repetitive. At it’s core, the step sequencer is a pretty simple device: it loops through a series of notes or phrases that are, well, sequentially ordered into steps. The operator can change the steps while the sequencer is looping, but it gener... | 7 | 5 | [
{
"comment_id": "6349725",
"author": "then",
"timestamp": "2021-05-18T22:04:44",
"content": "So this is what spam emails from the ’00’s would have sounded like =D Sounds great!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349764",
"author": "elsei... | 1,760,373,081.312756 | ||
https://hackaday.com/2021/05/18/do-you-really-own-it-motorcycle-airbag-requires-additional-purchase-to-inflate/ | Do You Really Own It? Motorcycle Airbag Requires Additional Purchase To Inflate | Al Williams | [
"Hackaday Columns",
"News",
"Rants",
"Slider"
] | [
"air bag",
"motorcycle",
"Rant"
] | If you ride a motorcycle, you may have noticed that the cost of airbag vests has dropped. In one case, something very different is going on here.
As reported by Motherboard
, you can pick up a KLIM Ai-1 for $400 but the airbag built into it will not function until unlocked with an additional purchase, and a big one at ... | 218 | 50 | [
{
"comment_id": "6349595",
"author": "rok",
"timestamp": "2021-05-18T17:16:11",
"content": "Spread the word and boycott !Safety features on subscription should be made illegal.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349661",
"author": "Hirud... | 1,760,373,081.700736 | ||
https://hackaday.com/2021/05/18/2021-hackaday-prize-hack-chat-join-us-live-on-wednesday/ | 2021 Hackaday Prize Hack Chat; Join Us Live On Wednesday | Dan Maloney | [
"Hackaday Columns",
"The Hackaday Prize"
] | [
"2021 Hackaday Prize",
"Hack Chat"
] | Join us on Wednesday, May 19 at noon Pacific for the
2021 Hackaday Prize Hack Chat
with Majenta Strongheart!
At this point last year, we probably all felt like we’d been put through a wringer, and that things would get back to normal any day now. Little did we know how much more was in store for us, and how many more c... | 1 | 1 | [
{
"comment_id": "6350373",
"author": "irox",
"timestamp": "2021-05-20T22:28:12",
"content": "FYI, transcript of the hack chat:https://hackaday.io/event/178151-2021-hackaday-prize-hack-chat/log/193026-hack-chat-transcript-part-1",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,373,081.809763 | ||
https://hackaday.com/2021/05/18/tiny-delorean-made-from-lighters-is-a-total-gas/ | Tiny DeLorean Made From Lighters Is A Total Gas | Kristina Panos | [
"green hacks",
"how-to"
] | [
"DeLorean",
"lighter",
"scrap acrylic"
] | There’s making stuff out of trash, and then there’s mind-blowing stuff like this:
a DeLorean built from four disposable cigarette lighters and various other bits and bobs
like wire sheathing and cotton bud sticks. If it weren’t for the video evidence embedded below, we would have never believed that [Ank Creative] or a... | 29 | 8 | [
{
"comment_id": "6349570",
"author": "misk",
"timestamp": "2021-05-18T16:18:21",
"content": "this is incredible. absolute piece of art!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6349573",
"author": "Observer",
"timestamp": "2021-05-18T16:27:06",
... | 1,760,373,081.768751 | ||
https://hackaday.com/2021/05/18/2021-hackaday-prize-rethink-refresh-and-rebuild/ | 2021 Hackaday Prize: Rethink, Refresh, And Rebuild | Mike Szczys | [
"contests",
"Featured",
"Slider",
"The Hackaday Prize"
] | [
"2021 Hackaday Prize"
] | The
2021 Hackaday Prize
begins right now. Tap into your creativity and build your piece of a better future on the topics of supportive technology, everyday robotics, imaginative displays, and work-from-home innovations.
Now in its eighth year, the Hackaday Prize is a global engineering initiative that seeks out new and... | 17 | 5 | [
{
"comment_id": "6349555",
"author": "Opossumax",
"timestamp": "2021-05-18T14:59:47",
"content": "I’ve always wanted to participate in these but I am neither talented nor creative enough to do anything on my own.If anyone needs an extra teammate please recruit me. I’m okay at most things and I do ha... | 1,760,373,081.86505 | ||
https://hackaday.com/2021/05/18/spy-tech-cia-masks-in-five-minutes-or-less/ | Spy Tech: CIA Masks In Five Minutes Or Less | Al Williams | [
"Misc Hacks",
"Wearable Hacks"
] | [
"cia",
"espionage",
"hyper realistic mask",
"silicone",
"silicone mask",
"spies",
"spy"
] | You know the old trope: James Bond is killed but it turns out to be someone else in an incredibly good-looking Sean Connery mask. Mission: Impossible and Scooby Doo regularly had some variation of the theme. But, apparently, truth is stranger than fiction. The CIA has — or at least had — a chief of disguise. A former h... | 23 | 9 | [
{
"comment_id": "6349491",
"author": "datacarrierdetect",
"timestamp": "2021-05-18T11:34:43",
"content": "How do you deal with sweat in such masks? I find wearing surgical gloves uncomfortable after as little as 10min, because transpiration starts to accumulate as moisture inside the gloves, and I ... | 1,760,373,082.008062 | ||
https://hackaday.com/2021/05/18/retro-isa-card-means-old-slow-computers-no-longer-need-old-heavy-monitors/ | Retro ISA Card Means Old, Slow Computers No Longer Need Old, Heavy Monitors | Donald Papp | [
"Retrocomputing",
"Video Hacks"
] | [
"cga",
"composite video",
"isa",
"MDA",
"retro",
"retrocomputing",
"vga",
"video card",
"vintage"
] | One thing about vintage computers is that they depend greatly on whether or not one can plug a compatible monitor into them. That’s what’s behind [Tube Time]’s
Graphics Gremlin, a modern-design retro ISA video card
that uses an FPGA to act just like a vintage
MDA
or
CGA
video card on the input end, but provides a VGA p... | 66 | 12 | [
{
"comment_id": "6349454",
"author": "Stappers",
"timestamp": "2021-05-18T08:16:22",
"content": "Nice.Yes, that is a compliment.It is very nice to see that [Tube Time] bridges vintage computer and modern monitor.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id":... | 1,760,373,082.309574 | ||
https://hackaday.com/2021/05/17/a-disgusting-1980s-computer-restored/ | A “Disgusting” 1980s Computer Restored | Al Williams | [
"Repair Hacks",
"Retrocomputing",
"Teardown"
] | [
"acorn",
"acorn electron",
"retrocomputing"
] | It takes a special eye to see a junkyard car and envision it as your latest hotrod. The guys at RMC found what they termed a “disgusting” Acorn Electron and
decided to restore it to its former glory
. The Electron was a budget version of the BBC micro with a 6502 running at 2 MHz when executing code from ROM and 1 MHz ... | 42 | 17 | [
{
"comment_id": "6349398",
"author": "jimmydevice",
"timestamp": "2021-05-18T05:09:03",
"content": "if you haven’t done a mouse piss rebuild your a bit lacking or live in a nice area",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349581",
"author": ... | 1,760,373,081.950316 | ||
https://hackaday.com/2021/05/17/the-history-of-neon-lights/ | The History Of Neon Lights | Al Williams | [
"Misc Hacks"
] | [
"geissler tube",
"history",
"neon",
"neon bulb",
"neon light"
] | We always enjoy history videos from [The History Guy] but they don’t always cover technology history. When they do, though, we enjoy them twice as much as with the recent video he posted on the
history of neon signs
. Of course, as he points out, many neon lights don’t have actual neon in them — they use various noble ... | 12 | 4 | [
{
"comment_id": "6349361",
"author": "Old Guy",
"timestamp": "2021-05-18T02:30:58",
"content": "“The other noble gas, Xenon…”So no love for Radon, also a noble gas? Measure twice, cut once, won’t you?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349422"... | 1,760,373,082.151362 | ||
https://hackaday.com/2021/05/17/a-standing-desk-on-the-cheap/ | A Standing Desk On The Cheap | Chris Lott | [
"home hacks"
] | [
"diy",
"low cost",
"monitor arm",
"standing desk"
] | A programmer forced to work from home during the pandemic, [MrAkpla] was having back pains from sitting in front of the computer all day. He considered buying a standing desk, but all the various options didn’t fit with either his desk or his budget. Not to be deterred, he devised
one of the simplest standing desk impl... | 23 | 15 | [
{
"comment_id": "6349340",
"author": "Mono",
"timestamp": "2021-05-18T00:29:15",
"content": "The ergonomics of this are all wrong. If you’re looking to try out a standing desk for health reasons, this isn’t it.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "... | 1,760,373,082.367865 | ||
https://hackaday.com/2021/05/17/gaming-headset-gets-simple-wireless-charging/ | Gaming Headset Gets Simple Wireless Charging | Tom Nardi | [
"digital audio hacks",
"Wireless Hacks"
] | [
"3D printed parts",
"headset",
"qi charger",
"wireless charging"
] | Despite the technology itself being widely available and relatively cheap, devices that offer wireless charging as a feature still aren’t as common as many would like. Sure it can’t deliver as much power as something like USB-C, but for low-draw devices that don’t necessarily need to be recharged in a hurry, the conven... | 9 | 5 | [
{
"comment_id": "6349300",
"author": "raster",
"timestamp": "2021-05-17T20:19:41",
"content": "I did something similar, but using contacts.http://blog.rastersoft.com/?p=1945http://blog.rastersoft.com/?p=2139",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "634... | 1,760,373,082.205656 | ||
https://hackaday.com/2021/05/20/freenode-debacle-prompts-staff-exodus-new-network/ | Freenode Debacle Prompts Staff Exodus, New Network | Tom Nardi | [
"Current Events",
"Featured",
"Slider",
"Software Development"
] | [
"foss",
"Freenode",
"irc",
"open source"
] | It’s no secret that Internet Relay Chat (IRC) has lost some of its appeal in recent years. These days there’s plenty of free chat platforms boasting slick web interfaces and smartphone push notifications, to say nothing of social networks like Facebook and Twitter. The ability to communicate with like minded individual... | 68 | 19 | [
{
"comment_id": "6350239",
"author": "zoobab",
"timestamp": "2021-05-20T14:36:49",
"content": "The price of centralisation.Can we decentralize, or is it too hard for humans?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350283",
"author": "Gravis",... | 1,760,373,082.474719 | ||
https://hackaday.com/2021/05/20/terminal-magic-with-notcurses/ | Terminal Magic With Notcurses | Jonathan Bennett | [
"computer hacks",
"Linux Hacks"
] | [
"demoscene",
"Notcurses"
] | Writing a command line program that needs a little more pizzaz? Ncurses just not colorful or high res enough? Or maybe you want to bring the demo scene to the command line.
Notcurses has your back
. The demo is great, and looks like it can push out enough detail to pull off silliness like pushing an SNES game’s output ... | 10 | 7 | [
{
"comment_id": "6350199",
"author": "Iván Stepaniuk",
"timestamp": "2021-05-20T11:31:35",
"content": "———-| MEH |———-",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6350206",
"author": "Vince",
"timestamp": "2021-05-20T12:12:14",
"content": "I’d l... | 1,760,373,082.519692 | ||
https://hackaday.com/2021/05/20/what-nes-development-looks-like-on-the-apple-ii/ | What NES Development Looks Like On The Apple II | Lewin Day | [
"Nintendo Hacks"
] | [
"apple",
"apple II",
"nes",
"Nintendo Entertainment System"
] | These days, if you want to code a game for the original Nintendo Entertainment System, it’s about as easy as downloading an assembler, firing up Notepad, and running the ROMs you cook up in any one of a variety of emulators. In the 1980s none of those things existed, and the process was a little more complicated –
as d... | 29 | 8 | [
{
"comment_id": "6350185",
"author": "kodjo",
"timestamp": "2021-05-20T10:18:10",
"content": "What is this extended keyboard? I don’t know Apple II had these.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6350236",
"author": "f15sim",
"times... | 1,760,373,082.580259 | ||
https://hackaday.com/2021/05/19/inside-the-vic-20/ | Inside The VIC-20 | Al Williams | [
"Retrocomputing",
"Teardown"
] | [
"commodore",
"retrocomputing",
"teardown",
"VIC-20",
"vic20"
] | Commodore machines are well-loved around here, but usually when you think Commodore, you think about the Commodore 64, or maybe the PET or Amiga. But the Commodore 64 had an older sister, the VIC 20. This was the first computer to sell a million units and has a lot in common with its better-known successor. The machine... | 51 | 18 | [
{
"comment_id": "6350148",
"author": "Tom Hargrave",
"timestamp": "2021-05-20T06:14:45",
"content": "I owned a VIC 20. It was my second computer, my first was a Timex Sinclair. The Sinclair used a Z80 and I expanded memory in both. Both machines used static RAM.The Sinclair was expanded by soldering... | 1,760,373,082.672008 | ||
https://hackaday.com/2021/05/19/psa-amazon-sidewalk-rolls-out-june-8th/ | PSA: Amazon Sidewalk Rolls Out June 8th | Kristina Panos | [
"News",
"Security Hacks"
] | [
"amazon",
"Amazon Echo",
"Amazon Sidewalk",
"bluetooth",
"LoRa",
"LoRaWAN",
"mesh network",
"privacy"
] | Whether you own any Amazon surveillance devices or not, we know how much you value your privacy. So consider this your friendly reminder that Amazon Sidewalk is going live in a few weeks, on June 8th. A rather long list of devices have this setting enabled by default, so if you haven’t done so already,
here’s how to tu... | 41 | 13 | [
{
"comment_id": "6350102",
"author": "Gyro",
"timestamp": "2021-05-20T02:52:57",
"content": "The link “here’s how to turn it off” does not have the correct instructions anymore. They moved the setting from where that article says it is. I’m not sure where they moved it to.They have moved settings be... | 1,760,373,082.864682 | ||
https://hackaday.com/2021/05/19/javascript-app-uses-advanced-math-to-make-pcbs-easier-to-etch/ | JavaScript App Uses Advanced Math To Make PCBs Easier To Etch | Dan Maloney | [
"Misc Hacks"
] | [
"app",
"etching",
"g-code",
"gerber",
"javascript",
"laser",
"pcb",
"resist",
"tessellation",
"voronoi"
] | We all remember the litany from various math classes we’ve taken, where frustration at a failure to understand a difficult concept bubbles over into the classic, “When am I ever going to need to know this in real life?” But as we all know, even the most esoteric mathematical concepts have applications in the real world... | 28 | 12 | [
{
"comment_id": "6350059",
"author": "Zelea",
"timestamp": "2021-05-19T23:19:23",
"content": "Does anyone know of a similar application that works on a vector format PCB rather than on raster images? I am routing my PCBs on a CNC machine so my workflow is Gerber -> isolation -> NC code. This works ... | 1,760,373,082.732513 | ||
https://hackaday.com/2021/05/19/thousands-of-discrete-mosfets-make-up-this-compact-cpu-less-computer/ | Thousands Of Discrete MOSFETs Make Up This Compact CPU-Less Computer | Dan Maloney | [
"computer hacks"
] | [
"ALU",
"discrete",
"logic",
"mosfet",
"nor",
"retrocomputer"
] | How long has it been since a computer could boast about the fact that it contained 2,500 transistors? Probably close to half a century now, at a guess. So in a world with a couple of billion transistors per chip, is a 2,500-transistor computer really something to brag about?
Yes. Yes, it is
.
The CPU-less computer, cal... | 19 | 14 | [
{
"comment_id": "6350002",
"author": "Severe Tire Damage",
"timestamp": "2021-05-19T20:13:25",
"content": "It is indeed pretty!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6350009",
"author": "boz",
"timestamp": "2021-05-19T20:24:55",
"content":... | 1,760,373,082.789123 | ||
https://hackaday.com/2021/05/17/disgusting-apple-ii-monitors-live-again/ | Disgusting Apple II Monitors Live Again | Chris Lott | [
"green hacks",
"Video Hacks"
] | [
"apple II",
"color monitor",
"landfill",
"refurbish",
"rescue"
] | [The 8-Bit Guy] recently went to check out a stash of old Apple II Color monitors which had been sitting outside in a trash pile for 20 years, and
decided to bring one home to restore
. As you can see from the lead photo, they were dirty — really dirty. Surprisingly, the team of volunteers who discovered these monitors... | 33 | 9 | [
{
"comment_id": "6349264",
"author": "BT",
"timestamp": "2021-05-17T18:33:41",
"content": "When I was a teenager in around 1977 my father brought home a colour TV he had found dumped in a roadside ditch, in the wet UK winter, for me to “fiddle with”. I let it dry out, replaced a big fat oozing capac... | 1,760,373,083.129617 | ||
https://hackaday.com/2021/05/17/telemetry-debate-rocks-audacity-community-in-open-source-dustup/ | Telemetry Debate Rocks Audacity Community In Open Source Dustup | Tom Nardi | [
"Current Events",
"Hackaday Columns",
"News",
"Slider",
"Software Development"
] | [
"analytics",
"foss",
"open source",
"privacy",
"telemetry"
] | Starting an open source project is easy: write some code, pick a compatible license, and push it up to GitHub. Extra points awarded if you came up with a clever logo and remembered to actually document what the project is supposed to do. But maintaining a large open source project and keeping its community happy while ... | 107 | 26 | [
{
"comment_id": "6349242",
"author": "Iiiiiii",
"timestamp": "2021-05-17T17:19:35",
"content": "Tl;Dr: ?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349256",
"author": "Eugene",
"timestamp": "2021-05-17T18:05:29",
"content": "Auda... | 1,760,373,083.535664 | ||
https://hackaday.com/2021/05/17/projecting-moving-images-in-air-with-lasers/ | Projecting Moving Images In Air With Lasers | Al Williams | [
"Laser Hacks"
] | [
"hologram",
"optical trap display",
"volumetric display"
] | You’ve seen it a million times in science fiction movies and TV shows: a moving holographic display. From Princess Leia asking for help to virtual tennis on
Total Recall
, it is a common enough idea. [Dan Smalley]’s team at BYU has made progress in
projecting moving 3D images
in thin air. While they might not be movie ... | 14 | 3 | [
{
"comment_id": "6349225",
"author": "mrehorst",
"timestamp": "2021-05-17T15:48:03",
"content": "I found this a little disappointing. Essentially you use a high powered laser to position a particle that you light up with another laser. I don’t know what kind of power it takes to levitate a particle ... | 1,760,373,083.341672 | ||
https://hackaday.com/2021/05/17/gassing-up-understanding-the-liquid-fuel-distribution-network/ | Gassing Up: Understanding The Liquid Fuel Distribution Network | Dan Maloney | [
"Engineering",
"Featured",
"Interest",
"News",
"Original Art",
"Slider"
] | [
"gas",
"infrastructure",
"pipeline"
] | When someone talks about “The Grid,” as in “dropping off the grid” or “the grid is down,” we tend to think in terms of the electromagnetic aspects of the infrastructure of modern life. The mind’s eye sees The Grid as the network of wires that moves electricity from power plants to homes and businesses, or the wires, op... | 40 | 16 | [
{
"comment_id": "6349206",
"author": "Steven-X",
"timestamp": "2021-05-17T14:44:11",
"content": "My wife and I walk through a local tank farm as part of our daily walk (a public road cuts it in two) and it was fascinating to watch as they went through some major upgrades last winter (pre covid).",
... | 1,760,373,083.616861 | ||
https://hackaday.com/2021/05/17/soil-moisture-sensors-how-do-they-work/ | Soil Moisture Sensors, How Do They Work? | Donald Papp | [
"green hacks"
] | [
"capacitive sensor",
"gardening",
"moisture sensor",
"plants",
"soil sensor",
"water"
] | In a way, the magic of a soil moisture sensor’s functionality boils down to a simple RC circuit. But of course, in practice there is a bit more to it than that. [rbaron]
explains exactly how capacitive soil moisture sensors work
simply, clearly, and concisely. He also shows, with a short video, exactly how their output... | 19 | 6 | [
{
"comment_id": "6349169",
"author": "Russ",
"timestamp": "2021-05-17T11:47:47",
"content": "Capacitive soil moisture sensors are very sensitive to salt content unless the frequency is high (> 50 MHz). This design appears to operate at 0.5 MHz.I experimented with a sensor like this for automated tom... | 1,760,373,083.292127 | ||
https://hackaday.com/2021/05/17/actively-balancing-a-robot-with-a-gyroscope/ | Actively Balancing A Robot With A Gyroscope | Danie Conradie | [
"Robots Hacks"
] | [
"balancing robot",
"gyroscope",
"james bruton"
] | Self-balancing robots are a common hacker project, but we don’t often see them using spinning gyroscopes to achieve that balance. Robot master [James Bruton] decided to build a robotic platform with
active gyroscopic stabilization
, starting from a simple
proof of concept
.
A gyroscope can balance, but cannot actively ... | 9 | 2 | [
{
"comment_id": "6349154",
"author": "Erik Christiansen",
"timestamp": "2021-05-17T09:10:37",
"content": "Very interesting to see double gyroscope balancing in action. Somewhere in my library there’s a novel from before WWI with a fictional tale of a young man driving a two-wheeled gyrocar through A... | 1,760,373,083.389617 | ||
https://hackaday.com/2021/05/16/rodriguez-iv-curve-tracer-on-the-cheap/ | Rodriguez — IV Curve Tracer On The Cheap | Chris Lott | [
"Arduino Hacks",
"Tech Hacks"
] | [
"arduino",
"curve tracer"
] | In response to an online discussion on the Electrical Engineering Stack Exchange, [Joseph Eoff] decided to prove his point by slapping together a
bare-bones IV curve tracer
using an Arduino Nano and a handful of passives. But he continued to tinker with the circuit, seeing just how much improvement was possible out of ... | 9 | 2 | [
{
"comment_id": "6349121",
"author": "Dude",
"timestamp": "2021-05-17T06:26:21",
"content": ">He squeezes a bit of extra resolution out of the PWM DAC circuit by using the Timer1 library to obtain 1024 instead of 256 steps.You can get up to 16 bits of resolution by summing the two 8-bit timers’ PWM ... | 1,760,373,083.668979 | ||
https://hackaday.com/2021/05/15/using-ikea-guts-to-add-sonos-compatibility-to-a-vintage-speaker/ | Using Ikea Guts To Add Sonos Compatibility To A Vintage Speaker | Jenny List | [
"digital audio hacks",
"home hacks"
] | [
"audio",
"ikea",
"sonos",
"speaker",
"symfonisk"
] | We’re in a fortunate position when it comes to audio gear, because advances in amplifier and signal processing technology have delivered us budget devices that produce a sound that’s excellent in comparison to those of a few years ago. That said, a decent quality device is good whichever decade it was manufactured in, ... | 8 | 6 | [
{
"comment_id": "6348813",
"author": "Dude",
"timestamp": "2021-05-15T09:41:28",
"content": "Are there any handy DSP modules you can just drop in between your sound source and the amp?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6348835",
"author"... | 1,760,373,083.712519 | ||
https://hackaday.com/2021/05/14/spacewar-on-pdp-11-restoration/ | Spacewar! On PDP-11 Restoration | Chris Lott | [
"classic hacks"
] | [
"DEC PDP-11",
"DECUS",
"PDP-1",
"restoration",
"spacewar"
] | If you want to play the original Spacewar! but you don’t have a PDP-1 nearby, then you’re in luck — assuming you have a PDP-11, that is. [Mattis Lind] has
successfully restored a PDP-11 port of the game
from PDF scans of the source code, which was thought to have been lost to the trash bins of
DECUS
(Digital Equipment ... | 10 | 6 | [
{
"comment_id": "6348798",
"author": "JWhitten",
"timestamp": "2021-05-15T08:07:56",
"content": "I remember this game. Or at least, I think I do. Wasn’t there a video-game console version of it made briefly? Pre-Atari, or thereabouts? I found a web site with the information about it. I remember play... | 1,760,373,083.764212 | ||
https://hackaday.com/2021/05/14/random-robot-makes-random-art/ | Random Robot Makes Random Art | Bryan Cockfield | [
"Robots Hacks"
] | [
"3d printer",
"art",
"bristlebot",
"control",
"random",
"rng",
"robot"
] | For the price of a toothbrush and a small motor with an offset weight, a bristlebot is essentially the cheapest robot that can be built. The motor shakes the toothbrush and the bristle pattern allows the robot to move, albeit in a completely random pattern. While this might not seem like a true robot that can interact ... | 4 | 3 | [
{
"comment_id": "6348772",
"author": "Somun",
"timestamp": "2021-05-15T04:25:31",
"content": "Random person makes random comment.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6348773",
"author": "Jul13",
"timestamp": "2021-05-15T04:53:31",
"conte... | 1,760,373,083.802989 | ||
https://hackaday.com/2021/05/14/automated-watering-machine-has-what-plants-crave-fertilizer/ | Automated Watering Machine Has What Plants Crave: Fertilizer | Kristina Panos | [
"Lifehacks",
"Microcontrollers"
] | [
"arduino",
"arduino nano",
"automated plant care",
"automatic plant watering",
"ESP32",
"fertilizer",
"lcd",
"peristaltic pump"
] | We’ve seen countless automated plant care systems over the years, but for some reason they almost never involve the secret sauce of gardening — fertilizer. But [xythobuz] knows what’s up. When they moved into their new flat by themselves, it was time to spread out and start growing some plants on the balcony. Before lo... | 19 | 8 | [
{
"comment_id": "6348741",
"author": "norro211",
"timestamp": "2021-05-14T23:53:24",
"content": "Because plants generally don’t need fertilizer, especially not litres of it for a balcony.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6348752",
"auth... | 1,760,373,083.859363 | ||
https://hackaday.com/2021/05/14/wood-enclosure-lends-warmth-to-this-diy-ribbon-microphone/ | Wood Enclosure Lends Warmth To This DIY Ribbon Microphone | Dan Maloney | [
"Misc Hacks"
] | [
"audio",
"cnc",
"microphone",
"neodymium",
"plywood",
"ribbon",
"wood"
] | We love it when someone takes an idea they’ve seen on Hackaday and runs with it, taking it in a new and different direction. That’s pretty much what we’re here for, after all, and it’s pretty gratifying to see projects like
this wooden ribbon microphone
come to life.
Now, we’re not completely sure that [Maya Román] was... | 7 | 6 | [
{
"comment_id": "6348713",
"author": "Dan Lavin",
"timestamp": "2021-05-14T20:19:21",
"content": "Bravo Maya! I thought this project was going to be a DIY casing of a kit microphone … which would’ve been awesome regardless. The fact that the whole dang microphone is from scratch is amazing! You have... | 1,760,373,083.952776 | ||
https://hackaday.com/2021/05/14/a-stackable-planetary-gearbox-you-can-print-at-home/ | A Stackable Planetary Gearbox You Can Print At Home | Lewin Day | [
"3d Printer hacks"
] | [
"gearbox"
] | In one little corner of YouTube is a small but vibrant community sharing videos about gearboxes of their own design, particularly those with very high ratios or other quirky features. Adherents of the subculture are known as
gearheads
, and [Let’s Print] is among them. His latest creation is a 3D printed planetary gear... | 0 | 0 | [] | 1,760,373,084.044549 | ||
https://hackaday.com/2021/05/14/increased-neutron-levels-at-chernobyl-4-how-dangerous-is-corium/ | Increased Neutron Levels At Chernobyl-4: How Dangerous Is Corium? | Maya Posch | [
"Featured",
"News",
"Science"
] | [
"Chernobyl",
"corium",
"nuclear safety"
] | When the Chernobyl nuclear plant suffered the
power output surge
that would destroy its #4 reactor, a substance called ‘
corium
‘ was formed. This originally lava-like substance formed out of the destroyed fuel rods along with surrounding materials, like concrete, that made up the reactor. The corium ultimately cooled ... | 60 | 12 | [
{
"comment_id": "6348655",
"author": "Artenz",
"timestamp": "2021-05-14T17:09:36",
"content": "Not great, not terrible",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6348662",
"author": "Alexander Wikström",
"timestamp": "2021-05-14T17:27:32"... | 1,760,373,084.232945 | ||
https://hackaday.com/2021/05/16/magic-pyramids-blink-eternal-with-the-power-of-the-sun/ | Magic Pyramids Blink Eternal With The Power Of The Sun | Kerry Scharfglass | [
"hardware",
"Solar Hacks"
] | [
"degassing",
"energy harvesting",
"indoor light",
"led",
"LIC capacitor",
"pyramid",
"resin casting",
"solar",
"solar energy",
"super capacitor"
] | Without knowing it, we’ve spent years watching [Jasper Sikken] piece together an empire of energy harvesting equipment, and now he’s putting the pieces together into wonderful creations. His recently finished
solar harvesting pyramids
are mesmerizing objects of geometric perfection we’d love to see glinting in the sun.... | 21 | 9 | [
{
"comment_id": "6349098",
"author": "Henry",
"timestamp": "2021-05-17T02:11:32",
"content": "really really nice build!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349284",
"author": "Hirudinea",
"timestamp": "2021-05-17T19:16:50",
... | 1,760,373,084.134162 | ||
https://hackaday.com/2021/05/16/hackaday-links-may-16-2021/ | Hackaday Links: May 16, 2021 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links"
] | [
"AFR",
"brain",
"Curiosity",
"fab",
"foundry",
"hackaday links",
"hard drive",
"inventory",
"marketplace",
"mars",
"mri",
"mtbf",
"semiconductor",
"shortages",
"wheels"
] | With the successful arrival of
China’s first Mars lander and rover this week
, and the relatively recent addition of NASA’s
Perseverance
rover and its little helicopter sidekick
Ingenuity
, Mars has collected a lot of new hardware lately. But while the new kids on the block are getting all the attention, spare a though... | 19 | 9 | [
{
"comment_id": "6349089",
"author": "Rumble_in_the_Jungle",
"timestamp": "2021-05-17T00:04:33",
"content": "XScomponents: “Our selling fee starts at 23.5% of the purchase price”",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349090",
"author": "Rum... | 1,760,373,084.702907 | ||
https://hackaday.com/2021/05/16/repurpose-a-monitor-arm-as-microscope-mount/ | Repurpose A Monitor Arm As Microscope Mount | Chris Lott | [
"Tool Hacks"
] | [
"3d printing",
"articulating arm",
"microscope",
"microscope mount",
"monitor arm"
] | Being a bit shocked at the prices of articulating arm microscope mounts, not to mention the shipping fees to the UK, [CapTec] realized they looked substantially similar to your typical computer monitor arm mount. Thinking he could adapt a monitor arm for much less money,
he fired up FreeCAD and started designing
.
[Cap... | 12 | 8 | [
{
"comment_id": "6349067",
"author": "rok",
"timestamp": "2021-05-16T20:09:43",
"content": "… and when one needs a sturdy but longer arm with a smooth movement look in the direction of second hand hair-dresser supplies for an old wall-mounted hair dryer:https://external-content.duckduckgo.com/iu/?u=... | 1,760,373,084.49274 | ||
https://hackaday.com/2021/05/16/thought-control-via-handwriting/ | Thought Control Via Handwriting | Al Williams | [
"Machine Learning",
"Medical Hacks"
] | [
"accessibility",
"handwriting",
"machine learning",
"neural network",
"paralysis"
] | Computers haven’t done much for the quality of our already poor handwriting. However, a man paralyzed by an accident can now feed input into a computer by simply
thinking about handwriting
, thanks to work by Stanford University researchers. Compared to more cumbersome systems based on eye motion or breath, the handwri... | 12 | 5 | [
{
"comment_id": "6349045",
"author": "Randy R",
"timestamp": "2021-05-16T17:53:18",
"content": "Shouldn’t the title be “Handwriting via thought control?”",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349048",
"author": "socksbot",
"timestam... | 1,760,373,084.542496 | ||
https://hackaday.com/2021/05/16/scratch-built-tricycle-maximizes-fuel-efficiency/ | Scratch Built Tricycle Maximizes Fuel Efficiency | Bryan Cockfield | [
"Transportation Hacks"
] | [
"bike",
"fuel efficient",
"reverse trike",
"tricycle",
"trike"
] | While the bicycling community is welcoming an influx of electric bikes, there’s a group of tuners on the fringes that are still intent on strapping gas motors of all sizes to bicycles and buzzing down the roads in a loud and raucous fashion. Kits are readily available and are much cheaper than comparable e-bike kits, a... | 27 | 11 | [
{
"comment_id": "6349021",
"author": "Mike",
"timestamp": "2021-05-16T14:21:39",
"content": "Looks like a really fun build and ride!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349160",
"author": "J.dickinson",
"timestamp": "2021-05-17T10... | 1,760,373,084.645077 | ||
https://hackaday.com/2021/05/16/3d-printed-tank-takes-on-the-elements/ | 3D Printed Tank Takes On The Elements | Lewin Day | [
"Robots Hacks",
"Toy Hacks"
] | [
"3D printed parts",
"remote control",
"tank",
"tank track",
"tank tread"
] | Commercially available radio control tanks are fun and all, but sometimes you’ve just got to build your own. [Let’s Print] did just that, whipping up a tank on his 3D printer before taking it out in the snow.
The tank is a fairly straightforward build, relying on a pair of brushed motors for propulsion, controlled by t... | 4 | 2 | [
{
"comment_id": "6349041",
"author": "William Gallant",
"timestamp": "2021-05-16T16:39:20",
"content": "Sorry, I saw tank and 3D printing and since I know zip I have to ask. Out from left field…can you 3D print a fish aquarium? Or even print lenses? Clear plastic?",
"parent_id": null,
"depth... | 1,760,373,084.584993 | ||
https://hackaday.com/2021/05/16/tape-cutter-makes-short-work-of-through-hole-resistor-reels/ | Tape Cutter Makes Short Work Of Through-Hole Resistor Reels | Jenny List | [
"Parts",
"Tool Hacks"
] | [
"components",
"parts",
"tape cutter",
"through hole"
] | As the world of electronics makes its inexorable movement from through-hole parts to surface-mount, it’s easy to forget about the humble wire-ended resistor. But a stack of them is still a very useful resource for any experimenter, and most of us probably have a bunch of them with their accompanying twin strips of tape... | 9 | 6 | [
{
"comment_id": "6348996",
"author": "Andrew",
"timestamp": "2021-05-16T09:00:08",
"content": "But! One of the nyloc nuts is on the wrong way! Can’t watch!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6349007",
"author": "Dave",
"timestamp"... | 1,760,373,084.797898 | ||
https://hackaday.com/2021/05/15/vintage-hp-25-calculator-gets-wireless-charging/ | Vintage HP-25 Calculator Gets Wireless Charging | Chris Lott | [
"classic hacks",
"Parts"
] | [
"battery packs",
"hp-25",
"replacement",
"restoration"
] | [Jan Rychter] really likes his multiple HP-25C calculators, but the original battery pack design is crude and outdated. No problem —
he whips up a replacement
using Fusion 360 to design an enclosure, prints a few on his SLS 3D printer, and packs them with LiPo batteries and Qi/WPC wireless charging circuits.
In his blo... | 9 | 9 | [
{
"comment_id": "6348977",
"author": "rnjacobs",
"timestamp": "2021-05-16T05:48:24",
"content": "I love it!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "6348984",
"author": "Nikolai",
"timestamp": "2021-05-16T06:48:09",
"content": "He cam make a ... | 1,760,373,084.753523 | ||
https://hackaday.com/2021/05/15/robotic-bartender-built-with-industrial-grade-hardware/ | Robotic Bartender Built With Industrial-Grade Hardware | Lewin Day | [
"Robots Hacks"
] | [
"barbot",
"robotic bartender",
"servo"
] | Robotic bartenders are a popular project around these parts. If there’s one thing hackers love, after all, it’s automating tasks – as much for the challenge as for the actual time saved. This build from a group of [Teknic Servo] engineers is an impressive example of
what can be done with some industrial-grade hardware.... | 12 | 6 | [
{
"comment_id": "6348965",
"author": "Yeshua Watson",
"timestamp": "2021-05-16T02:49:06",
"content": "I mean, this was an ad but at least it was an ad I didn’t mind watching to the end. And damn effective as I was really thinking “I need one of these in my life.” Sure you can accomplish this with so... | 1,760,373,085.254776 | ||
https://hackaday.com/2021/05/15/a-phased-array-ultrasonic-3d-scanner-from-scratch/ | A Phased-Array Ultrasonic 3D Scanner From Scratch | Jenny List | [
"Arduino Hacks",
"Tech Hacks"
] | [
"3d scanner",
"ultrasonic",
"ultrasonic array"
] | Who wouldn’t want an autonomous drone to deliver cans of fizzy drink fresh from the fridge? [Alex Toussaint] did, and in thinking how such a machine might work he embarked on a path that eventually led him to create
a fully functional ultrasonic 3D scanner.
In writing it up he’s produced a straightforward description o... | 6 | 3 | [
{
"comment_id": "6348960",
"author": "Cuthbert",
"timestamp": "2021-05-16T02:27:23",
"content": "I think this is really neat. Phased array with sound seems like it should be a lot more attainable by hobbyists. Always wanted to give this a try some day. Hopefully there will be something open source ... | 1,760,373,084.846216 |
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