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https://hackaday.com/2025/05/16/wireless-doorbell-extension-features-home-wound-coil/ | Wireless Doorbell Extension Features Home-Wound Coil | John Elliot V | [
"home hacks"
] | [
"coil",
"ding-dong doorbell",
"solenoid",
"wireless doorbell"
] | Today in the it’s-surprising-that-it-works department we have a
ding dong doorbell extension
from [Ajoy Raman].
What [Ajoy] wanted to do was to extend the range of his existing doorbell so that he could hear it in his workshop. His plan of attack was to buy a new wireless doorbell and then interface its transmitter wit... | 12 | 6 | [
{
"comment_id": "8128334",
"author": "Bob the builder",
"timestamp": "2025-05-16T08:26:23",
"content": "That’s a neat solution.One of the first projects I built was a copy of this one:https://frenck.dev/diy-smart-doorbell-for-just-2-dollar/Connected it to home assistant and have these google homes a... | 1,760,371,546.155188 | ||
https://hackaday.com/2025/05/15/not-a-sewing-machine-a-multimedia-briefcase/ | Not A Sewing Machine: A Multimedia Briefcase | Al Williams | [
"Teardown"
] | [
"cassette",
"filmstrip",
"Singer"
] | When you think of Singer, you usually think of sewing machines, although if you are a history buff, you might remember they diversified into calculators, flight simulation, and a few other odd businesses for a while. [Techmoan] has an unusual device from Singer that is decidedly not a sewing machine. It is a 1970s-era ... | 11 | 7 | [
{
"comment_id": "8128339",
"author": "CJay",
"timestamp": "2025-05-16T08:58:21",
"content": "Nice n all but damn, that Swiss Army knife…. Who has pockets that big?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8128358",
"author": "Shannon",
... | 1,760,371,546.048969 | ||
https://hackaday.com/2025/05/15/voyager-1s-primary-thrusters-revived-before-dsn-command-pause/ | Voyager 1’s Primary Thrusters Revived Before DSN Command Pause | Maya Posch | [
"Space"
] | [
"Voyager 1"
] | As with all aging bodies, clogged tubes form an increasing issue. So too with the 47-year old Voyager 1 spacecraft and its hydrazine thrusters. Over the decades silicon dioxide from an aging rubber diaphragm in the fuel tank has been depositing on the inside of fuel tubes. By switching between primary, backup and traje... | 43 | 8 | [
{
"comment_id": "8128261",
"author": "M",
"timestamp": "2025-05-16T02:10:50",
"content": "board computer -> onboard computerswhich would troubleshooting – > which would make troubleshootingchanges appears -> changes appear",
"parent_id": null,
"depth": 1,
"replies": [
{
"co... | 1,760,371,546.480643 | ||
https://hackaday.com/2025/05/15/automatic-transmission-for-manual-transportation/ | Automatic Transmission For Manual Transportation | Bryan Cockfield | [
"Transportation Hacks"
] | [
"automatic transmission",
"bicycle",
"bike",
"gear ratio",
"torque converter"
] | The drivetrain of most modern bicycles has remained relatively unchanged for nearly a century. There have been marginal upgrades here and there like electronic shifting but you’ll still mostly see a chain with a derailleur or two. [Matthew] is taking a swing at a major upgrade to this system by
replacing the front dera... | 31 | 12 | [
{
"comment_id": "8128226",
"author": "HaHa",
"timestamp": "2025-05-15T23:11:30",
"content": "NO.Slushboxes were a bad idea for cars.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8128246",
"author": "TG",
"timestamp": "2025-05-16T00:59:40",
... | 1,760,371,546.401805 | ||
https://hackaday.com/2025/05/15/laced-peeling-back-pcb-layers-with-chemical-etching-and-a-laser/ | LACED: Peeling Back PCB Layers With Chemical Etching And A Laser | Maya Posch | [
"Reverse Engineering"
] | [
"etching PCBs",
"laser engraving"
] | Once a printed circuit board (PCB) has been assembled it’s rather hard to look inside of it, which can be problematic when you have e.g. a multilayer PCB of an (old) system that you really would like to dissect to take a look at the copper layers and other details that may be hidden inside, such as Easter eggs on inner... | 9 | 2 | [
{
"comment_id": "8128183",
"author": "Lorentio Brodesco",
"timestamp": "2025-05-15T21:08:39",
"content": "I’m Lorentio Brodesco, the creator of LACED, and I feel compelled to leave a response because, frankly, this article significantly underrepresents the essence and technical depth of the project.... | 1,760,371,546.104277 | ||
https://hackaday.com/2025/05/15/mylar-space-blankets-as-rf-reflectors/ | Mylar Space Blankets As RF Reflectors | Jenny List | [
"Radio Hacks"
] | [
"antenna",
"HF",
"mylar",
"reflector"
] | Metalized Mylar “space blankets” are sold as a survivalist’s accessory, primarily due to their propensity for reflecting heat. They’re pretty cheap, and [HamJazz] has performed some experiments on their RF properties. Do they reflect radio waves as well as they reflect heat? As it turns out,
yes they do
.
Any antenna s... | 11 | 9 | [
{
"comment_id": "8128143",
"author": "TG",
"timestamp": "2025-05-15T18:55:15",
"content": "They make mylar umbrellas as well. Wonder how one of those would perform.. Or if you could tweak it with different springy ribs or positions for the latch so that it better approximates a parabola",
"paren... | 1,760,371,546.200253 | ||
https://hackaday.com/2025/05/15/remembering-more-memory-xms-and-a-real-hack/ | Remembering More Memory: XMS And A Real Hack | Al Williams | [
"Hackaday Columns",
"Retrocomputing"
] | [
"8086",
"8088",
"ems",
"pc",
"protected mode",
"unreal mode",
"XMS"
] | Last time we talked about how the original PC has a limit of 640 kB for your programs and 1 MB in total
. But of course those restrictions chafed. People demanded more memory, and there were workarounds to provide it.
However, the workarounds were made to primarily work with the old 8088 CPU. Expanded memory (EMS) swap... | 28 | 7 | [
{
"comment_id": "8128116",
"author": "George",
"timestamp": "2025-05-15T17:12:46",
"content": "We used 8088 and 8086 a lot for embedded systems we designed. IAR compiler had a banked memory model. Easy to turn on. Then each memory area (RAM and ROM) has a section that was always present and anoth... | 1,760,371,545.952745 | ||
https://hackaday.com/2025/05/15/fpv-drone-takes-off-from-a-rocketing-start/ | FPV Drone Takes Off From A Rocketing Start | Ian Bos | [
"drone hacks"
] | [
"3d printing",
"amateur rocketry",
"DIYdrones",
"drone fpv"
] | Launching rockets into the sky can be a thrill, but why not make the fall just as interesting? That is exactly what
[I Build Stuff]
thought when attempting to build a self-landing payload. The idea is to release a can sized “satellite” from a rocket at an altitude upwards of 1 km, which will then fly back down to the l... | 24 | 6 | [
{
"comment_id": "8128102",
"author": "JJ Alpha",
"timestamp": "2025-05-15T16:24:59",
"content": "Awesome, MIRV FPVs, if the war keeps up it will be 20% more horrific in a few months",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8128441",
"author": "... | 1,760,371,546.330375 | ||
https://hackaday.com/2025/05/15/falling-down-the-land-camera-rabbit-hole/ | Falling Down The Land Camera Rabbit Hole | Jenny List | [
"chemistry hacks",
"Featured",
"History",
"Interest",
"Slider"
] | [
"edwin land",
"photography",
"polaroid"
] | It was such an innocent purchase, a slightly grubby and scuffed grey plastic box with the word “
P O L A R O I D
” intriguingly printed along its top edge. For a little more than a tenner it was mine, and I’d just bought one of Edwin Land’s instant cameras. The film packs it takes are now a decade out of production, bu... | 24 | 11 | [
{
"comment_id": "8128132",
"author": "Mike",
"timestamp": "2025-05-15T18:26:59",
"content": "I recently bought a typewriter. Then I bought another one…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8128163",
"author": "HaHa",
"timestamp": "2025-05-15T... | 1,760,371,546.267376 | ||
https://hackaday.com/2025/05/15/welcome-your-new-ai-lego-overlord/ | Welcome Your New AI (LEGO) Overlord | Al Williams | [
"Artificial Intelligence",
"Toy Hacks"
] | [
"ai",
"lego",
"LLM"
] | You’d think a paper from a science team from Carnegie Mellon would be short on fun. But the team behind
LegoGPT
would prove you wrong. The system allows you to enter prompt text and produce physically stable LEGO models. They’ve done more than just a paper. You can find a
GitHub
repo and a running
demo
, too.
The autho... | 13 | 5 | [
{
"comment_id": "8128023",
"author": "Lightislight",
"timestamp": "2025-05-15T11:28:37",
"content": "Millions of dollars, high tech equipment, some of the worlds greatest minds, a top university, and yes we have finally done it. Children’s toys can now be constructed by robots.",
"parent_id": nu... | 1,760,371,546.004357 | ||
https://hackaday.com/2025/05/15/smart-terrarium-run-by-esp32/ | Smart Terrarium Run By ESP32 | Lewin Day | [
"home hacks",
"Microcontrollers"
] | [
"ESP32",
"plant life",
"plants",
"terrarium"
] | A terrarium is a little piece of the living world captured in a small enclosure you can pop on your desk or coffee table at home. If you want to keep it as alive as possible, though, you might like to implement some controls. That’s precisely what
[yotitote] did with their smart terrarium build
.
At the heart of the bu... | 8 | 4 | [
{
"comment_id": "8127998",
"author": "PatG",
"timestamp": "2025-05-15T09:24:05",
"content": "I’m doing something similar for my mushroom grow-tent :)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8128003",
"author": "Carl Breen",
"timestamp"... | 1,760,371,546.705391 | ||
https://hackaday.com/2025/05/14/fancy-adding-a-transputer-or-two-to-your-atari-st/ | Fancy Adding A Transputer Or Two To Your Atari ST? | Dave Rowntree | [
"Retrocomputing"
] | [
"atari st",
"ATW800",
"fpga",
"inmos",
"Mega-ST",
"Tang 20k",
"transputer",
"VME"
] | Has anybody heard of the ATW800 transputer workstation? The one that used a modified Atari ST motherboard as a glorified I/O controller for a T-series transputer? No, we hadn’t either, but transputer superfan [Axel Muhr] has created the
ATW800/2, an Atari Transputer card, the way it was meant to be.
The transputer was... | 9 | 5 | [
{
"comment_id": "8127960",
"author": "Tom G",
"timestamp": "2025-05-15T06:34:55",
"content": "The modern version of the Transputer and Occam are alive and kicking: buy them at DigiKey.They are the XMOS xCORE processors (4000MIPS/chip, expandable) and xC.Unique benefit: they givehardrealtime process... | 1,760,371,546.574687 | ||
https://hackaday.com/2025/05/14/inside-starlinks-user-terminal/ | Inside Starlink’s User Terminal | Al Williams | [
"Teardown"
] | [
"reverse engineering",
"satellite",
"Starlink"
] | If you talk about Starlink, you are usually talking about the satellites that orbit the Earth carrying data to and from ground stations. Why not? Space is cool. But there’s another important part of the system: the terminals themselves. Thanks to [DarkNavy], you don’t have to tear one open yourself to
see what’s inside... | 34 | 9 | [
{
"comment_id": "8127925",
"author": "Truth",
"timestamp": "2025-05-15T03:21:16",
"content": "41 trusted ssh keysAt a guess, they are the exact same public ssh keys on all StarLink terminals globally. I can not see anything that could possibly go wrong with that :)",
"parent_id": null,
"dept... | 1,760,371,546.657777 | ||
https://hackaday.com/2025/05/14/led-layer-makes-plywood-glow/ | LED Layer Makes Plywood Glow | Tyler August | [
"Art",
"Microcontrollers"
] | [
"bending acrylic",
"bending plywood",
"CO2 laser cutter",
"custom plywood",
"epoxy",
"PY32",
"RGB LED"
] | Plywood is an interesting material: made up of many layers of thin wood plys, it can be built up into elegantly curved shapes. Do you need to limit it to just wood, though? [Zach of All Trades] has proved you do not, when he embedded a light guide, LEDs, microcontrollers and touch sensors
into a quarter inch (about six... | 4 | 4 | [
{
"comment_id": "8128009",
"author": "macsimki",
"timestamp": "2025-05-15T10:39:34",
"content": "very elegant. without the headphone its an art piece by itself.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8128025",
"author": "TDT",
"timestamp": "202... | 1,760,371,546.929012 | ||
https://hackaday.com/2025/05/13/trackside-observations-of-a-rail-power-enthusiast/ | Trackside Observations Of A Rail Power Enthusiast | Jenny List | [
"Featured",
"Interest",
"Original Art",
"Slider",
"Transportation Hacks"
] | [] | The life of a Hackaday writer often involves hours spent at a computer searching for all the cool hacks you love, but its perks come in not being tied to an office, and in periodically traveling around our community’s spaces. This suits me perfectly, because as well as having an all-consuming interest in technology, I ... | 59 | 14 | [
{
"comment_id": "8127177",
"author": "Tyler August",
"timestamp": "2025-05-13T14:19:08",
"content": "“This is a trend reflected in many other countries with large railway networks, except sadly for the United States, which has electrified only a small proportion of its huge network.” — and Canada, w... | 1,760,371,547.172718 | ||
https://hackaday.com/2025/05/13/studying-qr-code-degradation/ | Studying QR Code Degradation | Jenny List | [
"Repair Hacks"
] | [
"cliff edge",
"error correction",
"qr code"
] | It’s fair to say that QR codes are a technology that has finally come of age. A decade or more ago they were a little over-hyped and sometimes used in inappropriate or pointless ways, but now they are an accepted and useful part of life.
They’re not without their faults though, one of which is that despite four increas... | 30 | 8 | [
{
"comment_id": "8127106",
"author": "Iván Stepaniuk",
"timestamp": "2025-05-13T11:06:44",
"content": "Sadly, many QR codes are broken before they even get printed. Someone had the brilliant idea to start abusing the data redundancy mechanism to put whatever logo in the middle of it, make them color... | 1,760,371,547.286463 | ||
https://hackaday.com/2025/05/13/simulating-high-side-bootstrap-circuits-with-ltspice/ | Simulating High-Side Bootstrap Circuits With LTSpice | Dave Rowntree | [
"Software Hacks"
] | [
"bootstrapping",
"LTSpice",
"power supplies",
"simulation"
] | LTSpice is a tool that every electronics nerd should have at least a basic knowledge of. Those of us who work professionally in the analog and power worlds rely heavily on the validity of our simulations. It’s one of the basic skills taught at college, and essential to truly understand how a circuit behaves. [Mano] has... | 14 | 6 | [
{
"comment_id": "8127066",
"author": "RetepV",
"timestamp": "2025-05-13T08:37:32",
"content": "As a motorbike rider, I try to avoid low side and high side driving as the plague. :DBut this is what Hackaday is doing for me: as (digital) computer scientist, I am gradually learning about analog electro... | 1,760,371,546.98917 | ||
https://hackaday.com/2025/05/12/the-zx-spectrum-logic-analyzer/ | The ZX Spectrum Logic Analyzer | Al Williams | [
"Raspberry Pi",
"Retrocomputing"
] | [
"logic analyzer",
"pi pico",
"rp2040",
"Spectrum ZX"
] | We know [Happy Little Diodes] frequently works with logic analyzer projects. His recent
wireless logic analyzer for the ZX Spectrum
is one of the oddest ones we’ve seen in a while. The heart of the system is an RP2040, and there are two boards. One board interfaces with the computer, and another hosts the controller.
T... | 8 | 4 | [
{
"comment_id": "8127040",
"author": "Nikolai",
"timestamp": "2025-05-13T07:11:01",
"content": "I was thinking to use ECG (EKG) as a logic analyzer. I have collected some ECG parts from surplus. It is technically a logic analyzer already, but kinda expensive if you look at original price.",
"par... | 1,760,371,547.219024 | ||
https://hackaday.com/2025/05/12/a-single-pixel-camera-without-moving-parts-using-compressed-sensing/ | A Single-Pixel Camera Without Moving Parts Using Compressed Sensing | Maya Posch | [
"digital cameras hacks",
"Science"
] | [
"compressed sensing",
"single pixel camera"
] | One of the reconstructed images, using all 4,096 matrix patterns as input, next to the original object. (Credit: okooptics, Jon Bumstead)
There’s a strange allure to single-pixel cameras due to the simultaneous simplicity and yet fascinating features that they can offer, such as no set resolution limit. That said, the ... | 18 | 7 | [
{
"comment_id": "8127012",
"author": "Ject",
"timestamp": "2025-05-13T02:53:46",
"content": "I would like to have seen him try illuminating 1 pixel at a time, and just assign the photodetector value to the corresponding pixel. That’s less time efficient than using the patterns, but I think it would... | 1,760,371,547.34225 | ||
https://hackaday.com/2025/05/12/work-eat-sleep-repeat-become-a-human-tamagotchi/ | Work, Eat, Sleep, Repeat: Become A Human Tamagotchi | Heidi Ulrich | [
"Games",
"News",
"Toy Hacks"
] | [
"dystopia",
"led",
"led matrix",
"maslow",
"pixel",
"python",
"raspberry pi",
"tamagotchi"
] | When [Terence Grover] set out to build a Tamagotchi-inspired simulator,
he didn’t just add a few modern tweaks.
He ditched the entire concept and rebuilt it from the ground up. Forget cute wide-eyed blobby animals and pixel-poop. This Raspberry Pi-powered project ditches nostalgia in favour of brutal realism: inflation... | 10 | 7 | [
{
"comment_id": "8127030",
"author": "jpa",
"timestamp": "2025-05-13T05:50:09",
"content": "From the title I expected this to be an AI that gives you the commands that you would give to a Tamagotchi. No more deciding things yourself!",
"parent_id": null,
"depth": 1,
"replies": []
},
... | 1,760,371,547.389942 | ||
https://hackaday.com/2025/05/12/unwinding-an-unusual-slide-rule/ | Unwinding An Unusual Slide Rule | Al Williams | [
"Retrocomputing"
] | [
"otis king",
"slide rule"
] | If the
Otis King slide rule
in [Chris Staecker’s] latest video looks a bit familiar, you might be getting up there in age, or you might remember seeing us talk about one
in our collection
. Actually, we have two floating around one of the Hackaday bunkers, and they are quite the conversation piece. You can watch the vi... | 15 | 9 | [
{
"comment_id": "8126979",
"author": "Tom G",
"timestamp": "2025-05-12T22:00:57",
"content": "Ah, the diddy pocket slide rule. Why not get a “full-size” one?The Fuller calculator has a scale that is nominally[1] equivalent to a 1000inch/25.4m scale standard straight slide rule. Over 14000 were made... | 1,760,371,547.445623 | ||
https://hackaday.com/2025/05/14/your-own-core-rope-memory/ | Your Own Core Rope Memory | Al Williams | [
"Retrocomputing"
] | [
"core memory",
"Core rope memory",
"magnetics",
"memory"
] | If you want read-only memory today, you might be tempted to use flash memory or, if you want old-school, maybe an EPROM. But there was a time when that wasn’t feasible. [Igor Brichkov] shows us how to
make a core rope memory
using a set of ferrite cores and wire. This was famously used in early UNIVAC computers and the... | 14 | 8 | [
{
"comment_id": "8127843",
"author": "Carl Breen",
"timestamp": "2025-05-14T20:05:04",
"content": "https://hackaday.com/2022/01/13/soviet-era-auto-dialler-uses-magnetic-rope-core-memory/Probably the best use that existed in civil applications you could actually buy.",
"parent_id": null,
"dep... | 1,760,371,547.494765 | ||
https://hackaday.com/2025/05/14/2025-pet-hacks-contest-automatic-treat-dispenser-makes-kitty-work-for-it/ | 2025 Pet Hacks Contest: Automatic Treat Dispenser Makes Kitty Work For It | Tyler August | [
"contests",
"home hacks"
] | [
"2025 Pet Hacks Contest",
"cat wheel",
"continuous rotation servo",
"ESP32 wroom",
"treat dispenser"
] | Treat dispensers are old hat around here, but what if kitty doesn’t need the extra calories — and actually needs to drop some pounds? [MethodicalMaker] decided to
link the treat dispenser to a cat wheel, and reward kitty for healthy behaviors
. The dispenser can be programmed to make the cat run long enough to burn the... | 10 | 7 | [
{
"comment_id": "8127810",
"author": "Hirudinea",
"timestamp": "2025-05-14T19:05:31",
"content": "Make it human sized and dispense donuts and you have the next new fitness fad.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8127852",
"author": "Tyler... | 1,760,371,547.547714 | ||
https://hackaday.com/2025/05/14/rtems-statement-deepens-libogc-license-controversy/ | RTEMS Statement Deepens Libogc License Controversy | Tom Nardi | [
"Current Events",
"Featured",
"Nintendo Wii Hacks",
"Slider",
"Software Development"
] | [
"gamecube",
"homebrew",
"libogc",
"nintendo",
"RTEMS",
"software license",
"wii"
] | Earlier this month
we covered the brewing controversy over libogc
, the community-developed C library that functions as the backbone for GameCube and Wii homebrew software. Questions about how much of the library was based on leaked information from Nintendo had been circulating for decades, but the more recent accusat... | 41 | 11 | [
{
"comment_id": "8127791",
"author": "jpa",
"timestamp": "2025-05-14T18:21:39",
"content": "Relicensing libogc from permissive license to GPL shouldn’t be that much of a trouble. It may be more difficult for projects depending on it.The similarity to linux 2.4.10 spinlock.h is almost 100%. And becau... | 1,760,371,547.632514 | ||
https://hackaday.com/2025/05/14/raduga-the-retro-computer-from-behind-the-curtain/ | RADUGA: The Retro Computer From Behind The Curtain | Al Williams | [
"Retrocomputing"
] | [
"USSR",
"z80"
] | When [Kasyan] was six years old, he saw a
RADUGA computer
, a Russian unit from the 1990s, and it sparked his imagination. He has one now that is a little beat up, but we feel like he sees it through his six-year-old eyes as a shiny new computer. The computer, which you can see in the video below, was a clone of the Sp... | 7 | 5 | [
{
"comment_id": "8127740",
"author": "Joshua",
"timestamp": "2025-05-14T16:26:02",
"content": "Wonderful machine! 😃💙These computer designs have something retro futuristic to them, I think.The only thing I don’t really understand why they did bother to support color.I mean, IBM’s CGA and the ZX Spe... | 1,760,371,547.673442 | ||
https://hackaday.com/2025/05/14/version-control-to-the-max/ | Version Control To The Max | Al Williams | [
"Featured",
"Rants",
"Slider",
"Software Development"
] | [
"Rant",
"version control",
"virtualization"
] | There was a time when version control was an exotic idea. Today, things like Git and a handful of other tools allow developers to easily rewind the clock or work on different versions of the same thing with very little effort. I’m here to encourage you not only to use version control but also to go even a step further,... | 42 | 20 | [
{
"comment_id": "8127687",
"author": "jens",
"timestamp": "2025-05-14T14:17:05",
"content": "We use docker / podman containers that contain all the environment including external code and libraries which obviously could also disappear in the future.The docker file can be versioned as well, the resul... | 1,760,371,547.967746 | ||
https://hackaday.com/2025/05/14/a-brain-transplant-for-a-philips-smart-lamp/ | A Brain Transplant For A Philips Smart Lamp | Tyler August | [
"home hacks",
"Microcontrollers"
] | [
"ESP32-C6",
"smart light",
"zigbee"
] | As the saying goes, modern problems require modern solutions. When the modern problem is that your smart light is being hijacked by the neighbors, [Wejn]’s modern solution is to
reverse engineer and replace the mainboard.
The light in question is a Phillips Hue Ambiance, and [Wejn]’s excellently-documented six part ser... | 25 | 8 | [
{
"comment_id": "8127617",
"author": "Jan",
"timestamp": "2025-05-14T11:19:25",
"content": "“Even if you’re scratching your head wondering why a light switch isn’t good enough anymore…”Ahh… you’ve read my mind. This is scary…“smart light is being hijacked by the neighbors”What… that’s even scarier!B... | 1,760,371,547.883557 | ||
https://hackaday.com/2025/05/14/turning-a-chromebox-into-a-proper-power-efficient-pc/ | Turning A Chromebox Into A Proper Power-Efficient PC | Maya Posch | [
"computer hacks",
"google hacks"
] | [
"chromebox",
"ChromeOS"
] | Google’s ChromeOS and associated hardware get a lot of praise for being easy to manage and for providing affordable hardware for school and other educational settings. It’s also undeniable that their locked-down nature forms a major obstacle and provides limited reusability.
That is unless you don’t mind doing a bit of... | 21 | 7 | [
{
"comment_id": "8127561",
"author": "shinsukke",
"timestamp": "2025-05-14T08:31:55",
"content": "Great, now I want it too! (I have no use for it, I already have a ryzen 5 3550H server running 24/7)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8127592",
... | 1,760,371,548.094419 | ||
https://hackaday.com/2025/05/12/semiconductor-simulator-lets-you-play-ic-designer/ | Semiconductor Simulator Lets You Play IC Designer | Al Williams | [
"Software Hacks",
"Tool Hacks"
] | [
"IC design",
"semiconductor",
"simulator"
] | For circuit simulation, we have always been enthralled with the Falstad simulator which is a simple, Spice-like simulator that runs in the browser. [Brandon] has a simulator, too, but it simulates semiconductor devices. With help from [Paul Falstad], that
simulator also runs in the browser
.
This simulator takes a litt... | 8 | 4 | [
{
"comment_id": "8126964",
"author": "Steven Clark",
"timestamp": "2025-05-12T19:18:42",
"content": "Sothat’swhy the DAC in Successive-Approximation-Register ADCs is a C2C instead of R2R ladder.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8126971",
"aut... | 1,760,371,548.190316 | ||
https://hackaday.com/2025/05/12/keebin-with-kristina-the-one-with-the-mingkwai-typewriter/ | Keebin’ With Kristina: The One With The MingKwai Typewriter | Kristina Panos | [
"Hackaday Columns",
"Peripherals Hacks",
"Slider"
] | [
"endgame keyboard",
"media control",
"MingKwai typewriter",
"Munson",
"portable endgame",
"portable keyboard",
"seeed xiao",
"the Munson typewriter"
] | Sometimes, a little goes a long way. I believe that’s the case with
this tiny media control bar
from [likeablob] that uses an ESP32-C3 Super Mini.
Image by [likeablob] via
Hackaday.IO
From left to right you’ve got a meta key that allows double functions for all the other keys. The base functions are play/pause, previou... | 4 | 4 | [
{
"comment_id": "8126928",
"author": "JRD",
"timestamp": "2025-05-12T17:41:29",
"content": "That whiteout station would fit in the film THX-1138. Imagine an endless white void with a desk far in the distance, and as you get closer you see a white desk with an all-white computer, with one lone guy we... | 1,760,371,548.147259 | ||
https://hackaday.com/2025/05/12/print-pla-in-pla-with-a-giant-molecular-model-kit/ | Print PLA In PLA With A Giant Molecular Model Kit | Tyler August | [
"chemistry hacks"
] | [
"3D printable",
"Chemistry",
"educational toy",
"molecule"
] | It isn’t too often we post a hack that’s just a pure 3D print with no other components, but for this
Giant Molecular Model kit
by [3D Printy], we’ll make an exception. After all, even if you print with PLA every day, how often do you get to play with its molecular bonds? (If you want to see that molecule, check out the... | 1 | 1 | [
{
"comment_id": "8126986",
"author": "lightislight",
"timestamp": "2025-05-12T22:43:24",
"content": "Print quality on those is pretty great! These things are surprisingly expensive to buy. It brings me a lot of joy to see jumbo versions freely available to download an d print at will",
"parent_i... | 1,760,371,548.307818 | ||
https://hackaday.com/2025/05/12/radio-apocalypse-meteor-burst-communications/ | Radio Apocalypse: Meteor Burst Communications | Dan Maloney | [
"Featured",
"History",
"Interest",
"Radio Hacks",
"Slider"
] | [
"burst",
"cold war",
"ion",
"ionosphere",
"meteor",
"propagation",
"radio"
] | The world’s militaries have always been at the forefront of communications technology. From trumpets and drums to signal flags and semaphores, anything that allows a military commander to relay orders to troops in the field quickly or call for reinforcements was quickly seized upon and optimized. So once radio was inve... | 15 | 8 | [
{
"comment_id": "8126866",
"author": "Clancydaenlightened",
"timestamp": "2025-05-12T14:08:09",
"content": "Well using HF you can control a drone anywhere on the globe with as low as 10W of power given the right conditions and bandUse the ghz band via a sattlink simply for video and high bandwidth d... | 1,760,371,548.367386 | ||
https://hackaday.com/2025/05/12/whats-in-a-washer/ | What’s In A Washer? | Al Williams | [
"Misc Hacks"
] | [
"Belleville washer",
"washers"
] | Some things are so common you forget about them. How often do you think about an ordinary resistor, for example? Yet if you have a bad resistor, you’ll find it can be a big problem. Plus, how can you really understand electronics if you don’t know all the subtle details of a resistor? In the mechanical world, you could... | 15 | 7 | [
{
"comment_id": "8126823",
"author": "Fiteboss",
"timestamp": "2025-05-12T12:03:11",
"content": "Really never expected to see a photo of a machine tool drawbar on Hackaday.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8126843",
"author": "Kman",
"tim... | 1,760,371,548.418579 | ||
https://hackaday.com/2025/05/12/rebooting-an-1973-art-installation-running-on-a-nova/ | Rebooting An 1973 Art Installation Running On A Nova | Dave Rowntree | [
"Art"
] | [
"Data General Nova",
"neon lamp",
"PT8211",
"Raspberry Pi 4",
"SIMH",
"synthesiser",
"Teensy 4.0",
"ws2811"
] | Electronics-based art installations are often fleeting and specific things that only a select few people who are in the right place
or time
get to experience before they are lost to the ravages of ‘progress.’ So it’s wonderful to find a dedicated son who has recreated his father’s 1973 art installation, showing it to t... | 19 | 11 | [
{
"comment_id": "8126792",
"author": "M",
"timestamp": "2025-05-12T09:33:20",
"content": "I think usagi electric is working on bringing up exactly one of those NOVA minicomputers.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8126960",
"author": "mr... | 1,760,371,548.542453 | ||
https://hackaday.com/2025/05/11/simulating-cable-tv/ | Simulating Cable TV | Al Williams | [
"home entertainment hacks",
"Raspberry Pi"
] | [
"cable TV"
] | [Wrongdog Recons] suffers from a severe case of nostalgia. His earlier project simulated broadcast TV, and he was a little surprised at how popular the project was on GitHub. As people requested features, he realized that he could create a simulated cable box and
emulate a 1990s-era cable TV system
. Of course, you als... | 16 | 6 | [
{
"comment_id": "8126757",
"author": "LordNothing",
"timestamp": "2025-05-12T06:10:54",
"content": "brownie points if you use fake commercials from the likes of robocop and others.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8126764",
"author": "N... | 1,760,371,548.476774 | ||
https://hackaday.com/2025/05/13/you-wouldnt-download-a-helmet/ | You Wouldn’t Download A Helmet? | Fenix Guthrie | [
"Transportation Hacks"
] | [
"airbag",
"airbags",
"bike hack",
"bike helmet"
] | Odds are, if you have ridden a bicycle for any amount of time, you have crashed. Crashes are fast, violent and chaotic events that leave you confused, and very glad to have a helmet. But what if there was another way of protecting your head? [Seth] decided to find out by taking a look at
the Hövding airbag helmet
.
The... | 33 | 15 | [
{
"comment_id": "8127504",
"author": "Oscar",
"timestamp": "2025-05-14T05:31:44",
"content": "Living in Stockholm when these were popular, it was clear that it was simply a class and style symbol. It was a way to distinguish yourself from the poor bikers, without actually driving a car.€300, single-... | 1,760,371,548.749923 | ||
https://hackaday.com/2025/05/13/whats-an-lcr-databridge/ | What’s An LCR Databridge? | Al Williams | [
"Teardown"
] | [
"aim",
"LCR meter",
"Racal-Dana",
"z80"
] | [Thomas Scherrer] has an odd piece of vintage test equipment in his most recent video. An
AIM LCR Databridge 401
. What’s a databridge? We assume it was a play on words of an LCR bridge with a digital output. Maybe. You can see a teardown in the video below.
Inside the box is a vintage 1983 Z80 CPU with all the extra p... | 6 | 4 | [
{
"comment_id": "8127471",
"author": "asheets",
"timestamp": "2025-05-14T03:00:32",
"content": "I had to look up what “LCR” stood for. I probably could have eventually guessed, but the context of the article was, for me, a bit off.",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,371,548.582913 | ||
https://hackaday.com/2025/05/13/a-web-based-controller-for-your-garage-door/ | A Web Based Controller For Your Garage Door | Lewin Day | [
"Misc Hacks"
] | [
"ESP32",
"garage door",
"garage door opener",
"magnetic switch"
] | Garage doors! You could get out of your vehicle and open and close them yourself, but that kinda sucks. It’s much preferable to have them raise and lower courtesy some mechanical contrivance, and even better if that is controlled via the web.
[Juan Schiavoni] shows us how to achieve the latter with their latest project... | 17 | 8 | [
{
"comment_id": "8127412",
"author": "Chris Cecil",
"timestamp": "2025-05-13T23:28:24",
"content": "Good work.I was planning something very similar at one point except I was just going to use a small relay across the pushbutton switch on the wall instead of opening a remote, or emulating the radio.J... | 1,760,371,548.846855 | ||
https://hackaday.com/2025/05/13/thermal-monocular-brings-the-heat-at-10x/ | Thermal Monocular Brings The Heat At 10X | Al Williams | [
"digital cameras hacks"
] | [
"ir camera",
"telescope"
] | [Project 326] is following up on his thermal microscope with a thermal telescope or, more precisely, a
thermal monocular
. In fact, many of the components and lenses in this project are the same as those in the microscope, so you could cannibalize that project for this one, if you wanted.
During the microscope project,... | 5 | 3 | [
{
"comment_id": "8127341",
"author": "Beowulf Shaeffer",
"timestamp": "2025-05-13T20:12:27",
"content": "Huh… Really thought the mirrors would work.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8127420",
"author": "Lightislight",
"timestamp... | 1,760,371,548.796953 | ||
https://hackaday.com/2025/05/13/a-toolchanging-delta-3d-printer/ | A Toolchanging Delta 3D Printer | Aaron Beckendorf | [
"3d Printer hacks"
] | [
"delta 3D printer",
"delta printer",
"toolchanger",
"toolchanging"
] | We’ve seen quite a few delta 3D printers, and a good number of toolchanging printers, but not many that combine both worlds. Fortunately,
[Ben Wolpert]’s project fills that gap
with a particularly elegant and precise delta toolchanger.
The hotend uses three steel spheres and triangular brackets to make a repeatable thr... | 3 | 3 | [
{
"comment_id": "8127413",
"author": "Andy",
"timestamp": "2025-05-13T23:29:09",
"content": "DeltaMaker has had this for a while. Pretty much same concept.https://www.deltamaker.com/blogs/news/halo-toolchanger-percision-test",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"co... | 1,760,371,549.209402 | ||
https://hackaday.com/2025/05/13/remembering-memory-ems-and-tsrs/ | Remembering Memory: EMS, And TSRs | Al Williams | [
"Hackaday Columns",
"Retrocomputing",
"Slider"
] | [
"8086",
"8088",
"ems",
"IBM PC",
"TSR"
] | You often hear that Bill Gates once proclaimed, “640 kB is enough for anyone,” but, apparently, that’s a myth — he never said it. On the other hand, early PCs did have that limit, and, at first, that limit was mostly theoretical.
After all, earlier computers often topped out at 64 kB or less, or — if you had some fancy... | 48 | 19 | [
{
"comment_id": "8127254",
"author": "Jon Mayo",
"timestamp": "2025-05-13T17:18:18",
"content": "I had a 386 with options in the BIOS to assign some of the memory to hardware EMS. Probably a C&T NEAT (CS8281?) but I don’t remember.I had 6 of those 386sx33 motherboards with 4MB – 16MB of RAM in each... | 1,760,371,548.991313 | ||
https://hackaday.com/2025/05/13/the-worlds-longest-range-led-flashlight/ | The World’s Longest Range LED Flashlight | John Elliot V | [
"LED Hacks"
] | [
"led flashlight",
"long range"
] | [ApprehensiveHawk6178] reports that they have made
the world’s longest range LED flashlight
! While technically “handheld”, you’re gonna need both hands for this monster. According to the creator, it draws 1.2 kW (20 A @ 60 V) to deliver 100,000 lumens and approximately 20,000,000 candelas.
This spotlight is made from ... | 39 | 17 | [
{
"comment_id": "8127198",
"author": "threeve",
"timestamp": "2025-05-13T15:32:40",
"content": "https://xkcd.com/1603/",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8127205",
"author": "macsimki",
"timestamp": "2025-05-13T15:46:21",
... | 1,760,371,549.122538 | ||
https://hackaday.com/2025/05/11/reading-the-color-of-money/ | Reading The Color Of Money | Matt Varian | [
"Reverse Engineering"
] | [
"money",
"reverse engineering"
] | Ever wondered what happens when you insert a bill into a vending machine? [Janne] is back with his latest project: reverse engineering a
banknote validator
. Curious about how these common devices work, he searched for information but found few resources explaining their operation.
To learn more, [Janne] explored the s... | 9 | 3 | [
{
"comment_id": "8126722",
"author": "Ostracus",
"timestamp": "2025-05-12T02:36:07",
"content": "Seeing how Passports are made is also interesting.https://youtu.be/bnKyw5-_E6o",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8126807",
"author": "R",
... | 1,760,371,549.045612 | ||
https://hackaday.com/2025/05/11/hackaday-links-may-11-2025/ | Hackaday Links: May 11, 2025 | Dan Maloney | [
"Hackaday Columns",
"Hackaday links",
"Slider"
] | [
"ai",
"arctic",
"court",
"deep-fake",
"galaxies",
"hackaday links",
"Hubble",
"Indian Ocean",
"jwst",
"Kosmos 482",
"legal",
"Meltdown",
"nuclear",
"pressurized water reactor",
"PWR",
"thermal paste",
"venus",
"victim"
] | Did artificial intelligence just
jump the shark
? Maybe so, and it came from the legal world of all places, with
this report
of an AI-generated victim impact statement. In an apparent first, the family of an Arizona man killed in a road rage incident in 2021 used AI to bring the victim back to life to testify during th... | 6 | 3 | [
{
"comment_id": "8126718",
"author": "localroger",
"timestamp": "2025-05-12T02:21:06",
"content": "It is important to note that the AI victim statement doesn’t reflect anything that the victim might have said or believed, since the victim wasn’t there to participate in its creation. Rather, it’s re... | 1,760,371,549.167648 | ||
https://hackaday.com/2025/05/11/open-source-elint-accidentally-from-nasa/ | Open Source ELINT Accidentally From NASA | Al Williams | [
"Space"
] | [
"ELINT",
"jamming",
"SMAP"
] | You normally think of ELINT — Electronic Intelligence — as something done in secret by shadowy three-letter agencies or the military. The term usually means gathering intelligence from signals that don’t contain speech (since that’s COMINT). But [Nukes] was looking at public data from NASA’s SMAP satellite and made an ... | 9 | 2 | [
{
"comment_id": "8126713",
"author": "limroh",
"timestamp": "2025-05-12T02:02:11",
"content": "Interesting but the source is – let’s say – a little “odd”.a handful of posts since Jan 2024an empty about page:https://radioandnukes.substack.com/aboutlittle wired distinction/separation between Crimea an... | 1,760,371,549.292957 | ||
https://hackaday.com/2025/05/11/learn-15-print-in-place-mechanisms-in-15-minutes/ | Learn 15 Print-in-Place Mechanisms In 15 Minutes | Dave Rowntree | [
"3d Printer hacks"
] | [
"3d printed",
"design",
"flexures",
"living hinge",
"Mechanisms",
"springs"
] | 3D printed in-place mechanisms and flexures, such as living hinges, are really neat when you can get them to print correctly. But how do you actually do that? YouTuber [Slant 3D] is here with a
helpful video demonstrating the different kinds of springs and hinges
(Video, embedded below) that can be printed reliably, an... | 4 | 4 | [
{
"comment_id": "8126745",
"author": "Deividas Strole",
"timestamp": "2025-05-12T05:20:28",
"content": "3D printing flexures and living hinges is such a cool challenge! Slant 3D’s video does a great job breaking down the process and pointing out common pitfalls. It’s amazing how small adjustments ca... | 1,760,371,549.250588 | ||
https://hackaday.com/2025/05/11/exploring-the-rp2350s-uart-bootloader/ | Exploring The RP2350’s UART-Bootloader | Tyler August | [
"Microcontrollers"
] | [
"microcontroller",
"rp2350",
"uart",
"UART bootloader"
] | The RP2350 has a few advantages over its predecessor, one of which is the ability to load firmware remotely via UART, as [Thomas Pfister]
has documented on his blog
and in the video below.
[Thomas] had a project that needed more PWM than the RP2350 could provide, and hit upon the idea of using a second RP2350 as a port... | 12 | 6 | [
{
"comment_id": "8126616",
"author": "CRJEEA",
"timestamp": "2025-05-11T15:50:22",
"content": "It might be interesting for a cubesat.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8126623",
"author": "0xdeadbeef",
"timestamp": "2025-05-11T16:19:10",
... | 1,760,371,549.527578 | ||
https://hackaday.com/2025/05/11/tearing-down-a-forgotten-video-game/ | Tearing Down A Forgotten Video Game | Al Williams | [
"Retrocomputing",
"Teardown"
] | [
"pong",
"video game"
] | Remember Video Volley? No? We don’t either. It looks like it was a very
early video game console
that could play tennis, hockey, or handball. In this video, [James] tears one apart. If you are like us, we are guessing there will be little more than one of those General Instrument video game chips inside.
These don’t lo... | 5 | 4 | [
{
"comment_id": "8126560",
"author": "Chris Pepin",
"timestamp": "2025-05-11T11:20:56",
"content": "Pong machines are the 70’s equivalent of the all-in-one TV game joysticks of the 2000’s.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8126652",
"aut... | 1,760,371,549.478961 | ||
https://hackaday.com/2025/05/11/boxie-a-gameboy-esque-audio-player/ | Boxie – A Gameboy-Esque Audio Player | Matt Varian | [
"Musical Hacks"
] | [
"audio player",
"cartidge",
"ESP32-S3",
"nimh"
] | This little audiobook player is a stellar example of the learning process behind a multifaceted project blending mechanical, electrical, and software design. [Mario] designed this
audiobook player
, dubbed Boxie, for his 3-year-old son to replace the often-used but flawed Toniebox.
The inspiration for Boxie was the Ton... | 8 | 6 | [
{
"comment_id": "8126513",
"author": "jme",
"timestamp": "2025-05-11T08:35:33",
"content": "This is a fantastic project!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8126528",
"author": "Atoomnet",
"timestamp": "2025-05-11T09:02:38",
"content": "... | 1,760,371,549.581486 | ||
https://hackaday.com/2025/05/10/another-old-thinkpad-gets-a-new-motherboard/ | Another Old ThinkPad Gets A New Motherboard | Jenny List | [
"Retrocomputing"
] | [
"IBM Thinkpad",
"motherboard",
"x200"
] | The Thinkpad line of laptops, originally from IBM, and then from Lenovo, have long been the choice of many in our community. They offer a level of robustness and reliability missing in many cheaper machines. You may not be surprised to find that this article is being written on one. With such a following, it’s not surp... | 18 | 10 | [
{
"comment_id": "8126531",
"author": "Geoffrey Dowen",
"timestamp": "2025-05-11T09:18:35",
"content": "I just purchased @ T14 gen 1",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8126559",
"author": "The Solutor",
"timestamp": "2025-05-11T11:... | 1,760,371,549.639077 | ||
https://hackaday.com/2025/05/10/an-llm-for-the-raspberry-pi/ | An LLM For The Raspberry Pi | Al Williams | [
"Artificial Intelligence",
"Raspberry Pi"
] | [
"LLM",
"microsoft"
] | Microsoft’s latest Phi4 LLM has 14 billion parameters that require about 11 GB of storage. Can you run it on a Raspberry Pi? Get serious. However, the
Phi4-mini-reasoning model
is a cut-down version with “only” 3.8 billion parameters that requires 3.2 GB. That’s more realistic and, in a recent video, [Gary Explains] te... | 32 | 15 | [
{
"comment_id": "8126456",
"author": "Experienced Experimenter",
"timestamp": "2025-05-11T02:38:47",
"content": "There are more choices available for limited memory systems. Qwen3 8B is remarkably competitive to that 14B and to the 70Bs for its size.",
"parent_id": null,
"depth": 1,
"rep... | 1,760,371,551.921845 | ||
https://hackaday.com/2025/05/10/restoring-a-sinclair-c5-for-the-road/ | Restoring A Sinclair C5 For The Road | Jenny List | [
"Transportation Hacks"
] | [
"5d",
"Clive Sinclair",
"Sinclair C5"
] | The Sinclair C5 was Sir Clive’s famous first venture into electric mobility, a recumbent electric-assisted tricycle which would have been hardly unusual in 2025. In 1985, though, the C5 was so far out there that it became a notorious failure. The C5 retains a huge following among enthusiasts, though, and among those is... | 26 | 7 | [
{
"comment_id": "8126421",
"author": "Hirudinea",
"timestamp": "2025-05-10T23:36:44",
"content": "Restoring it, good idea. Putting it on the road, not so much.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8126534",
"author": "Jan-Willem Markus",
... | 1,760,371,551.783809 | ||
https://hackaday.com/2025/05/10/move-over-lithopane-3d-printed-3d-photos-with-gaussian-splats/ | Move Over, Lithophane: 3D Printed 3D Photos With Gaussian Splats | Tyler August | [
"3d Printer hacks"
] | [
"3d print",
"DLP printer",
"gaussian splat",
"resin"
] | If you had asked us yesterday “How do you 3D Print a Photo”, we would have said “well, that’s easy, do a lithophane”– but artist, hacker and man with a very relaxing voice [Wyatt Roy] has a much more impressive answer:
Gaussian splats, rendered in resin.
Gaussian splats are a 3D scanning technique aimed at replicating ... | 24 | 7 | [
{
"comment_id": "8126403",
"author": "Daniel",
"timestamp": "2025-05-10T20:51:37",
"content": "And he didn’t notice that his idea of Gaussian splats is wrong? They are not the Gaussian distribution curve rotated around the x axis, which looks like an onion. He has to take that function, give it the ... | 1,760,371,551.851985 | ||
https://hackaday.com/2025/05/10/best-practices-for-fdm-printing/ | Best Practices For FDM Printing | Al Williams | [
"3d Printer hacks"
] | [
"3D design",
"3d printing"
] | If you’ve been designing parts for 3D printing, you probably have some tricks and standards for your designs. [Rahix] decided to write out
a well-thought-out set of design rules for FDM prints
, and we can all benefit.
One of the things we liked about the list is that it’s written in a way that explains everything. Eve... | 38 | 10 | [
{
"comment_id": "8126372",
"author": "Echo",
"timestamp": "2025-05-10T18:26:49",
"content": "Did not expect to learn much new, but I ended up liking its style and attentionto details.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8127018",
"author":... | 1,760,371,551.666984 | ||
https://hackaday.com/2025/05/10/man-and-machine-vs-man-vs-machine/ | “Man And Machine” Vs “Man Vs Machine” | Elliot Williams | [
"Hackaday Columns",
"Rants",
"Slider"
] | [
"art",
"artificial intelligence",
"laser cutter",
"machine",
"mastery"
] | Every time we end up talking about 3D printers, Al Williams starts off on how bad he is in a machine shop. I’m absolutely sure that he’s exaggerating, but the gist is that he’s much happier to work on stuff in CAD and let the machine take care of the precision and fine physical details. I’m like that too, but with me, ... | 10 | 4 | [
{
"comment_id": "8126342",
"author": "Ostracus",
"timestamp": "2025-05-10T17:10:18",
"content": "“People have used tools since the stone age, and the people who master their tools transcend them, and produce work where the “human” shines through despite having traced a curve or having passed the Gco... | 1,760,371,551.439039 | ||
https://hackaday.com/2025/05/10/poe-powered-gpib-adapter-with-ethernet-and-usb-c-support/ | PoE-powered GPIB Adapter With Ethernet And USB-C Support | Maya Posch | [
"Peripherals Hacks",
"Retrocomputing"
] | [
"ethernet",
"gpib",
"power over ethernet",
"test equipment"
] | In the world of (expensive) lab test equipment the GPIB (general purpose interface bus) connection is hard to avoid if you want any kind of automation, but nobody likes wrangling with the bulky cables and compatibility issues when they can just use Ethernet instead. Here
[Chris]’s Ethernet-GPIB adapter
provides an easy... | 10 | 6 | [
{
"comment_id": "8126310",
"author": "Oliver",
"timestamp": "2025-05-10T13:07:54",
"content": "Wow – this could not come more timely as I recently acquired a trusty old HP 53131A frequency counter in pristine condition (super bright VFD, clean, no smell, caps looking good so far). Looking around the... | 1,760,371,551.590486 | ||
https://hackaday.com/2025/05/10/web-dashboard-and-ota-updates-for-the-esp32/ | Web Dashboard And OTA Updates For The ESP32 | John Elliot V | [
"Microcontrollers",
"Software Development"
] | [
"admin dashboard",
"embedded web server",
"ESP32",
"gui",
"mongoose",
"OTA",
"over-the-air update",
"REST interface",
"web-based interface"
] | Today we are happy to present
a web-based GUI for making a web-based GUI
! If you’re a programmer then web front-end development might not be your bag. But a web-based graphical user interface (GUI) for administration and reporting for your microcontroller device can look very professional and be super useful. The
Mong... | 10 | 7 | [
{
"comment_id": "8126273",
"author": "Carl Breen",
"timestamp": "2025-05-10T09:43:33",
"content": "Needs a way to sign the firmware or only upload after authentication with a username and password on the flash menu in the browser. Other than that solid work. (watched without sound, if I missed that ... | 1,760,371,551.487792 | ||
https://hackaday.com/2025/05/09/the-apple-ii-mousecard-irq-is-synced-to-vertical-blanking-after-all/ | The Apple II MouseCard IRQ Is Synced To Vertical Blanking After All | Maya Posch | [
"Retrocomputing",
"Reverse Engineering"
] | [
"apple II",
"interrupts"
] | Recently [Colin Leroy-Mira]
found himself slipping into a bit of a rabbit hole
while investigating why only under Apple II MAME emulation there was a lot of flickering when using the (emulated) Apple II MouseCard. This issue could not be reproduced on real (PAL or NTSC) hardware. The answer all comes down to how the ca... | 5 | 3 | [
{
"comment_id": "8126258",
"author": "Gravis",
"timestamp": "2025-05-10T06:58:44",
"content": "Defy the so-called experts!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8126280",
"author": "Rastersoft",
"timestamp": "2025-05-10T10:45:35",
"content... | 1,760,371,551.962877 | ||
https://hackaday.com/2025/05/09/the-nuclear-war-you-didnt-notice/ | The Nuclear War You Didn’t Notice | Al Williams | [
"Science"
] | [
"cold war",
"cyclotron",
"periodic table",
"transfermium"
] | We always enjoy [The History Guy], and we wish he’d do more history of science and technology. But when he does, he always delivers! His latest video, which you can see below, focuses on the Cold War pursuit of creating
transfermium elements
. That is, the discovery of elements that appear above fermium using advanced ... | 7 | 5 | [
{
"comment_id": "8126218",
"author": "TG",
"timestamp": "2025-05-10T02:22:04",
"content": "The administrators and professors at Berkeley were heartwarmingly friendly with the Soviets? You don’t say! I’m shocked, I tell you!The header photo and the ones in the video are super cool. Can’t find any oth... | 1,760,371,551.716253 | ||
https://hackaday.com/2025/05/09/antique-mill-satisfies-food-cravings/ | Antique Mill Satisfies Food Cravings | Tyler August | [
"News"
] | [
"manual machining",
"pantograph",
"waffles breakfast"
] | Everyone knows what its like to get a hankering for a specific food. In [Attoparsec]’s case, he wanted waffles. Not any waffles would do, though; he needed waffles in the form of a labyrinth. Those don’t exist, so he had to
machine his own waffle maker
.
When computers were the size of rooms, these stood in where we’d ... | 16 | 12 | [
{
"comment_id": "8126188",
"author": "Piecutter",
"timestamp": "2025-05-10T00:46:53",
"content": "Just to watch the syrup slowly find it’s way out.Excellent.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8126392",
"author": "Hirudinea",
"tim... | 1,760,371,551.541245 | ||
https://hackaday.com/2025/05/09/inside-a-selective-voltmeter/ | Inside A Selective Voltmeter | Al Williams | [
"Repair Hacks",
"Teardown"
] | [
"Harmon",
"rms",
"selective voltmeter"
] | [Martin Lorton] has a vintage
Harmon 4200B selective voltmeter
that needed repair. He picked it up on eBay, and he knew it wasn’t working, but it was in good condition, especially for the price. He’s posted four videos about what’s inside and how he’s fixing it. You can see the first installment below.
The 4200B is an ... | 0 | 0 | [] | 1,760,371,552.034203 | ||
https://hackaday.com/2025/05/09/a-single-chip-computer-for-the-8051-generation/ | A Single Chip Computer For The 8051 Generation | Jenny List | [
"classic hacks",
"Microcontrollers"
] | [
"8051",
"8052",
"MCS-51 BASIC"
] | The Intel 8051 series of 8-bit microcontrollers is long-discontinued by its original manufacturer, but lives on as a core included in all manner of more recent chips. It’s easy to understand and program, so it remains a fixture despite much faster replacements appearing.
If you can’t find an original 40-pin DIP don’t w... | 36 | 11 | [
{
"comment_id": "8126117",
"author": "deL",
"timestamp": "2025-05-09T19:05:59",
"content": "Starting out with a controller that features definite CPU-cycle and memory-resource constraints, will teach you a great deal about how to code efficiently. That’s something completely lost to the ‘programmers... | 1,760,371,552.149302 | ||
https://hackaday.com/2025/05/09/supercon-2024-an-immersive-motion-rehabilitation-device/ | Supercon 2024: An Immersive Motion Rehabilitation Device | Lewin Day | [
"cons",
"Hackaday Columns"
] | [
"2024 Hackaday Supercon",
"cons",
"medical device",
"rehabilitation"
] | When you’ve had some kind of injury, rehabilitation can be challenging. You often need to be careful about how you’re using the affected parts of your body, as well as pursue careful exercises for repair and restoration of function. It can be tedious and tiring work, for patients and treating practitioners alike.
Juan ... | 1 | 1 | [
{
"comment_id": "8126409",
"author": "Daniel Larrosa",
"timestamp": "2025-05-10T21:48:43",
"content": "Very nice project! Also useful and generous, for the benefit of those in need.The idea of gamification as a motivation for physiotherapy reminded me of something I read in the Reader’s Digest, ma... | 1,760,371,552.079099 | ||
https://hackaday.com/2025/05/08/diy-driving-simulator-pedals/ | DIY Driving Simulator Pedals | Matthew Carlson | [
"Peripherals Hacks"
] | [
"3d printed",
"foot pedals",
"racing simulation"
] | In the driving simulator community, setups can quickly grow ever more complicated and expensive, all in the quest for fidelity. For [CNCDan], rather than buy pedals off the shelf, he
opted to build his own
.
[Dan] has been using some commercial pedals alongside his own DIY steering wheel and the experience is rather la... | 8 | 5 | [
{
"comment_id": "8125842",
"author": "Miles",
"timestamp": "2025-05-08T23:58:15",
"content": "Bottom hinged pedals allow the foot to actuate the pedal in an arc similar to the one your ankle moves in.Activating them from school bus driving seat height and too far away is cringe.🤷🏼♂️ To each their... | 1,760,371,552.315811 | ||
https://hackaday.com/2025/05/08/edison-phonograph-plays-the-cylinders/ | Edison Phonograph Plays The Cylinders | Al Williams | [
"home entertainment hacks"
] | [
"amberol",
"edison",
"phonograph"
] | You might be old enough to remember record platters, but you probably aren’t old enough to remember when records were cylinders. The Edison Blue Amberol records came out in 1912 and were far superior to the earlier wax cylinders. If you had one today, how could you play it? Easy. Just build [Palingenesis’]
record playe... | 9 | 8 | [
{
"comment_id": "8125786",
"author": "Jonathan Whitaker",
"timestamp": "2025-05-08T20:07:58",
"content": "Good timing! I started trying to cobble together a player yesterday, now I have a reference 😁",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "8125808",
... | 1,760,371,552.273512 | ||
https://hackaday.com/2025/05/08/let-the-wookie-win-with-this-diy-holochess-table/ | Let The Wookie Win With This DIY Holochess Table | Tyler August | [
"Games",
"hardware"
] | [
"chess board",
"holographic",
"holographic display",
"star wars",
"volumetric display"
] | If you have seen
Star Wars
, you know what is being referenced here. Holochess appeared as a diversion built into the Millennium Falcon in the very first movie, way back in 1977. While not quite as iconic a use of simulated holograms as tiny Princess Leia begging for hope, it evidently struck a chord with [Maker Mac70]... | 9 | 4 | [
{
"comment_id": "8125767",
"author": "Igor",
"timestamp": "2025-05-08T19:13:57",
"content": "You only need a wookie to play with",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8126963",
"author": "scott_tx",
"timestamp": "2025-05-12T19:18:07"... | 1,760,371,552.471274 | ||
https://hackaday.com/2025/05/08/the-owon-hds160-reviewed/ | The Owon HDS160 Reviewed | Al Williams | [
"Reviews",
"Teardown"
] | [
"HDS160",
"oscilloscope",
"owon",
"scopemeter"
] | These days, if you are in the market for a capable digital voltmeter, you might as well consider getting one with an oscilloscope built-in. One choice is the
Owon HDS160
, which [Kerry Wong] covers in the video below. The model is very similar to the HDS120, but the multimeter in the HDS160 has more counts–60,000 vs 20... | 11 | 2 | [
{
"comment_id": "8125696",
"author": "Sok Puppette",
"timestamp": "2025-05-08T15:55:52",
"content": "The internal chip is an HY3131, which is rated at 50,000 counts which is odd since the meter is 60,000 counts, but presumably the meter uses some capability of the chip, possibly putting it out of sp... | 1,760,371,552.517706 | ||
https://hackaday.com/2025/05/08/flow-visualization-with-schlieren-photography/ | Flow Visualization With Schlieren Photography | Tyler August | [
"Featured",
"Interest",
"Original Art"
] | [
"photography",
"Schlieren",
"science",
"shimmer"
] | The word “Schlieren” is German, and translates roughly to “streaks”. What is streaky photography, and why might you want to use it in a project? And where did this funny term come from?
Think of the heat shimmer you can see on a hot day. From the ideal gas law, we know that hot air is less dense than cold air. Because ... | 9 | 6 | [
{
"comment_id": "8125681",
"author": "Meek the Geek",
"timestamp": "2025-05-08T14:44:29",
"content": "After seeing the video seeing the invisible by Physics explainedhttps://youtu.be/GCloRHSyaGU?si=WP0jMG2irE3eJ35GI had to try building the setup for our Physics lab as a demonstration. I will try th... | 1,760,371,552.424173 | ||
https://hackaday.com/2025/05/08/a-constant-fraction-discriminator-for-sub-nanosecond-timing/ | A Constant-Fraction Discriminator For Sub-Nanosecond Timing | Aaron Beckendorf | [
"hardware"
] | [
"constant fraction discriminator",
"pulse",
"signal processing"
] | Detecting a signal pulse is usually basic electronics, but you start to find more complications when you need to time the signal’s arrival in the picoseconds domain. These include the time-walk effect: if your circuit compares the input with a set threshold, a stronger signal will cross the threshold faster than a weak... | 3 | 2 | [
{
"comment_id": "8125637",
"author": "Ostracus",
"timestamp": "2025-05-08T12:09:01",
"content": "Proper component matching and layout for consistent timing and impedance matching to avoid reflections in delay line. A clean source would work better, maybe some analog clamping or RC differentiators?"... | 1,760,371,552.559399 | ||
https://hackaday.com/2025/05/08/3d-printed-tpu-bellows-with-pla-interface-layers/ | 3D Printed TPU Bellows With PLA Interface Layers | Maya Posch | [
"3d Printer hacks"
] | [
"bellows",
"TPU"
] | Of all FDM filament types, flexible ones such as TPU invite a whole new way of thinking, as well as applications. Case in point the
TPU-based bellows
that the [Functional Part Friday] channel on YouTube recently demonstrated.
The idea is quite straightforward: you print TPU and PLA in alternating layers, making sure th... | 22 | 8 | [
{
"comment_id": "8125583",
"author": "Krzysztof",
"timestamp": "2025-05-08T08:29:43",
"content": "Great idea for all those soft robot actuators!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8125614",
"author": "helge",
"timestamp": "2025-05... | 1,760,371,552.754338 | ||
https://hackaday.com/2025/05/09/hackaday-podcast-episode-320-a-lot-of-cool-3d-printing-diy-penicillin-and-an-optical-twofer/ | Hackaday Podcast Episode 320: A Lot Of Cool 3D Printing, DIY Penicillin, And An Optical Twofer | Kristina Panos | [
"Hackaday Columns",
"Podcasts"
] | [
"Hackaday Podcast"
] | This week, Hackaday’s Elliot Williams and Kristina Panos met up across the universe to bring you the latest news, mystery sound, and of course, a big bunch of hacks from the previous week.
In Hackaday news,
the 2025 Pet Hacks Contest
rolls on. You have until June 10th to show us what you’ve got, so head over to Hackada... | 0 | 0 | [] | 1,760,371,552.601848 | ||
https://hackaday.com/2025/05/09/oscilloscope-digital-storage-1990s-style/ | Oscilloscope Digital Storage, 1990s Style | Al Williams | [
"Teardown",
"Tool Hacks"
] | [
"analog shift register",
"oscilloscope",
"tektronix"
] | You’re designing an oscilloscope with modest storage — only 15,000 samples per channel. However, the sample rate is at 5 Gs/s, and you have to store all four channels at that speed and depth. While there is a bit of a challenge implied, this is quite doable using today’s technology. But what about in the 1990s when
the... | 13 | 6 | [
{
"comment_id": "8126045",
"author": "MattAtHazmat",
"timestamp": "2025-05-09T15:54:00",
"content": "Great series of scopes- I think they are the last Tek series that were not Windows based- And many in the series could get a memory upgrade by the FAE running a disk- Had to buy this from Tek about ... | 1,760,371,552.693572 | ||
https://hackaday.com/2025/05/09/this-week-in-security-encrypted-messaging-nsos-judgement-and-ai-cve-ddos/ | This Week In Security: Encrypted Messaging, NSO’s Judgement, And AI CVE DDoS | Jonathan Bennett | [
"Hackaday Columns",
"News",
"Security Hacks"
] | [
"ai",
"CVEs",
"supply chain attack",
"This Week in Security"
] | Cryptographic messaging has been in the news a lot recently. Like
the formal audit of WhatsApp
(
the actual PDF
). And the results are good. There are some minor potential problems that the audit highlights, but they are of questionable real-world impact. The most consequential is how easy it is to add additional membe... | 3 | 1 | [
{
"comment_id": "8126162",
"author": "limroh",
"timestamp": "2025-05-09T22:47:07",
"content": "This nicely demonstrates the inherent tension between the need for transparent archiving as required by the US government for internal communications, and the need for end-to-end encryption.How does this d... | 1,760,371,552.797165 | ||
https://hackaday.com/2025/05/09/triggering-lightning-and-safely-guiding-it-using-a-drone/ | Triggering Lightning And Safely Guiding It Using A Drone | Maya Posch | [
"drone hacks",
"Science"
] | [
"drone",
"lightning"
] | Every year lightning strikes cause a lot of damage — with the high-voltage discharges being a major risk to buildings, infrastructure, and the continued existence of squishy bags of mostly salty water. While some ways exist to reduce their impact such as lightning rods, these passive systems can only be deployed in sel... | 43 | 12 | [
{
"comment_id": "8125953",
"author": "shinsukke",
"timestamp": "2025-05-09T11:55:27",
"content": "The drones turned out to be fine up to 150 kA which is five times more than natural lightningThat means natural lightning is 30kA. I always imagined it to be a lot more, for whatever reason. Something l... | 1,760,371,552.939667 | ||
https://hackaday.com/2025/05/09/scan-your-caliper-for-physical-part-copies/ | Scan Your Caliper For Physical Part Copies | Al Williams | [
"3d Printer hacks"
] | [
"3d printing",
"cad"
] | We’ve certainly seen people take a photo of a part, bring it into CAD, and then scale it until some dimension on the screen is the same as a known dimension of the part. We like what [Scale Addition] shows in the video below. In addition to a picture of the part, he also
takes a picture of a vernier caliper gripping th... | 60 | 13 | [
{
"comment_id": "8125900",
"author": "Michael Karliner",
"timestamp": "2025-05-09T08:15:10",
"content": "When I need to copy a part that may be in a location away from my workbench, I just photo it with a £1 coin for scale (other currencies are available).",
"parent_id": null,
"depth": 1,
... | 1,760,371,553.114349 | ||
https://hackaday.com/2025/05/08/hacky-shack-the-trs-80-model-i-story/ | Hacky Shack? The TRS-80 Model I Story | Maya Posch | [
"Retrocomputing"
] | [
"tandy",
"trs-80"
] | The 1970s saw a veritable goldrush to corner the home computer market, with Tandy’s Z80-powered TRS-80 probably one of the most (in)famous entries. Designed from the ground up to be as cheap as possible, the original (Model I) TRS-80 cut all corners management could get away with. The story of the TRS-80 Model I is the... | 44 | 19 | [
{
"comment_id": "8125885",
"author": "Ostracus",
"timestamp": "2025-05-09T06:01:18",
"content": "Trash-80 indeed. One look from me across the room and it rebooted, losing work.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8125988",
"author": "ziggu... | 1,760,371,553.022833 | ||
https://hackaday.com/2025/05/08/understanding-linear-regression/ | Understanding Linear Regression | Al Williams | [
"Machine Learning"
] | [
"linear regression",
"math"
] | Although [Vitor Fróis] is explaining
linear regression
because it relates to machine learning, the post and, indeed, the topic have wide applications in many things that we do with electronics and computers. It is one way to use independent variables to predict dependent variables, and, in its simplest form, it is base... | 7 | 3 | [
{
"comment_id": "8125926",
"author": "shinsukke",
"timestamp": "2025-05-09T09:53:48",
"content": "Knowledge of regression, curve fitting and statistics is immensely helpful for engineers and software folk. Spend a few afternoons just exploring these fields and you will gain amazing tools to do whate... | 1,760,371,553.15694 | ||
https://hackaday.com/2025/05/06/supercon-2024-a-hackers-guide-to-analog-design-in-a-digital-world/ | Supercon 2024: A Hacker’s Guide To Analog Design In A Digital World | Navarre Bartz | [
"cons",
"Hackaday Columns",
"Slider"
] | [
"2024 Hackaday Superconference",
"analog",
"analog design",
"analog electronics"
] | We often think of analog computing as a relic of the past, room-sized monstrosities filled with vacuum tubes doing their best to calculate Monte Carlo simulations or orbital velocities. Analog isn’t as dead as it might seem though, and analog mix signal design engineer [Nanik Adnani] gave us a
crash course on analog ci... | 9 | 4 | [
{
"comment_id": "8125070",
"author": "jawnhenry",
"timestamp": "2025-05-06T18:01:19",
"content": "“… if a humble undergraduate can do analog work, then any hacker can too…”This statement is what is commonly known as anon sequitur.",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,371,553.250511 | ||
https://hackaday.com/2025/05/06/ai-brings-play-by-play-commentary-to-pong/ | AI Brings Play-by-Play Commentary To Pong | Al Williams | [
"Artificial Intelligence",
"Games"
] | [
"ai",
"LLM",
"pong"
] | While most of us won’t ever play Wimbledon, we can play Pong. But it isn’t the same without the thrill of the sportscaster’s commentary during the game. Thanks to [Parth Parikh] and an LLM, you
can now watch Pong matches with commentary during the game
. You can see the very cool result in the video below — the game it... | 6 | 2 | [
{
"comment_id": "8125031",
"author": "threeve",
"timestamp": "2025-05-06T15:54:38",
"content": "Is it really commentary if it’s 90% filler?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8125034",
"author": "purplepeopleated",
"timestamp": "2... | 1,760,371,553.200147 | ||
https://hackaday.com/2025/05/06/optical-contact-bonding-where-the-macro-meets-the-molecular/ | Optical Contact Bonding: Where The Macro Meets The Molecular | Maya Posch | [
"Featured",
"Interest",
"Original Art",
"Science",
"Slider"
] | [
"optical contact binding"
] | If you take two objects with fairly smooth surfaces, and put these together, you would not expect them to stick together. At least not without a liberal amount of adhesive, water or some other substance to facilitate a temporary or more permanent bond. This assumption gets tossed out of the window when it comes to opti... | 19 | 12 | [
{
"comment_id": "8125041",
"author": "Ostracus",
"timestamp": "2025-05-06T16:20:50",
"content": "“Wonder-bond powers, activate”!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8125247",
"author": "Tinothy X",
"timestamp": "2025-05-07T05:15:24... | 1,760,371,553.376118 | ||
https://hackaday.com/2025/05/06/improving-flying-drones-by-mimicking-flying-squirrels/ | Improving Flying Drones By Mimicking Flying Squirrels | Maya Posch | [
"drone hacks"
] | [
"quadcopter",
"squirrel"
] | With the ability to independently adjust the thrust of each of their four motors, quadcopters are exceptionally agile compared to more traditional aircraft. But in an effort to create an even more maneuverable drone platform, a group of South Korean researchers have studied
adding flying squirrel tech to quadcopters
. ... | 12 | 6 | [
{
"comment_id": "8124962",
"author": "Jouni",
"timestamp": "2025-05-06T11:17:53",
"content": "Did they optimize the flying parameters of non-squirrel version too?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8124977",
"author": "Shara",
"ti... | 1,760,371,553.424197 | ||
https://hackaday.com/2025/05/06/hardware-built-for-executing-python-not-pythons/ | Hardware Built For Executing Python (Not Pythons) | Lewin Day | [
"hardware",
"Software Development"
] | [
"determinism",
"programming",
"python",
"pyxl",
"speed"
] | Lots of microcontrollers will accept Python these days, with CircuitPython and MicroPython becoming ever more popular in recent years. However, there’s now a new player in town. Enter PyXL, a project to
run Python directly in hardware for maximum speed
.
What’s the deal with PyXL? “It’s actual Python executed in silico... | 42 | 12 | [
{
"comment_id": "8124935",
"author": "bateske",
"timestamp": "2025-05-06T08:29:41",
"content": "Wow all that work and still several times slower than C",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8124937",
"author": "Richard",
"timestamp":... | 1,760,371,553.843415 | ||
https://hackaday.com/2025/05/05/nebula-mouse-the-6-dof-you-build-yourself/ | Nebula Mouse: The 6-DOF You Build Yourself | Heidi Ulrich | [
"Peripherals Hacks"
] | [
"6-DOF",
"axis",
"mouse",
"nebula",
"nRF52840",
"seeed xiao",
"space mouse"
] | Let’s say your CAD workflow is starving for spatial awareness. Your fingers yearn to push, twist, and orbit – not just click.
Enter the Nebula Mouse
. A 6-DOF DIY marvel, blending 3D printing, magnets, and microcontroller wizardry into a handheld input device that emulates the revered 3DConnexion SpaceMouse – at a hack... | 31 | 12 | [
{
"comment_id": "8124905",
"author": "jpa",
"timestamp": "2025-05-06T05:54:16",
"content": "Open source alternatives:https://hackaday.io/project/187172-os3m-mousehttps://www.instructables.com/Space-Mushroom-Full-6-DOFs-Controller-for-CAD-Appl/",
"parent_id": null,
"depth": 1,
"replies": ... | 1,760,371,553.571448 | ||
https://hackaday.com/2025/05/05/3d-print-your-own-injection-molds-ejector-pins-and-all/ | 3D Print Your Own Injection Molds, Ejector Pins And All | Lewin Day | [
"3d Printer hacks"
] | [
"3d printing",
"injection mold",
"injection molding"
] | 3D printing is all well and good for prototyping, and it can even produce useful parts. If you want real strenght in plastics, though, or to produce a LOT of parts, you probably want to step up to injection molding. As it turns out, 3D printing can help in that regard, with injection molding company [APSX] has given us... | 20 | 8 | [
{
"comment_id": "8124882",
"author": "Clyde",
"timestamp": "2025-05-06T03:26:45",
"content": "The random full screen flashing in the video was rather unpleasant. Would have been nice to see the design process.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8... | 1,760,371,553.631114 | ||
https://hackaday.com/2025/05/07/magic-on-your-desk-via-maglev-toy/ | Magic On Your Desk Via MagLev Toy | Tyler August | [
"classic hacks"
] | [
"levitation",
"Magnetic levitation",
"magnets",
"stm32"
] | Magnets aren’t magic, but sometimes you can do things with them to fool the uninitiated — like levitating. [Jonathan Lock] does that with
his new maglev desk toy
, that looks like at least a level 2 enchantment.
This levitator is USB-powered, and typically draws 1 W to 3 W to levitate masses between 10 g and 500 g. The... | 9 | 6 | [
{
"comment_id": "8125310",
"author": "Jonathan Lock",
"timestamp": "2025-05-07T11:11:19",
"content": "Thanks for the write-up Tyler! It’ll be fun to see if anyone either builds one of their own or extends on this, e.g. doing something useful with the ESP32 or something more interesting than just lig... | 1,760,371,553.682452 | ||
https://hackaday.com/2025/05/07/tracking-the-sun-nah/ | Tracking The Sun? Nah! | Al Williams | [
"Solar Hacks"
] | [
"east west array",
"solar power",
"solar tracker"
] | If you want solar power, you usually have to make a choice. You can put a solar panel in a fixed location and accept that it will only put out the maximum when the sun is properly positioned. Or, you can make the panels move to track the sun.
While this isn’t difficult, it does add cost and complexity, plus mechanical ... | 43 | 15 | [
{
"comment_id": "8125285",
"author": "paulvdh",
"timestamp": "2025-05-07T08:17:54",
"content": "Tracking systems for solar panels have always been a very niche phenomena because of this. Even 20 years ago when solar panels were still expensive, tracking systems were rare. And it’s not only installa... | 1,760,371,553.761875 | ||
https://hackaday.com/2025/05/06/adorable-robot-steals-the-show/ | Adorable Robot Steals The Show | Tyler August | [
"Tech Hacks"
] | [
"arduino",
"movie prop",
"remote control"
] | An ongoing refrain with modern movies is “Why is all of this CG?”– sometimes, it seems like practical effects are simultaneously a dying art, while at the same time modern technology lets them rise to new hights. [Davis Dewitt] proves that second statement with his
RC movie star “robot” for an upcoming feature film
.
T... | 12 | 9 | [
{
"comment_id": "8125294",
"author": "IanS",
"timestamp": "2025-05-07T09:00:23",
"content": "“Lightening” means getting less dark. “Lightning” is a an electrical discharge in the atmosphere.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8125323",
"... | 1,760,371,554.009348 | ||
https://hackaday.com/2025/05/06/diy-penicillin/ | DIY Penicillin | Al Williams | [
"Science"
] | [
"antibiotic",
"bioreactor"
] | We don’t often consider using do-it-yourself projects as a hedge against the apocalypse. But [The Thought Emporium] thinks we should
know how to make penicillin
just in case. We aren’t so sure, but we do think it is a cool science experiment, and you can learn how to replicate it in the video below.
If you want to skip... | 16 | 6 | [
{
"comment_id": "8125214",
"author": "David",
"timestamp": "2025-05-07T02:11:22",
"content": "Only until the apocalypse. As the song says, “When the states and the cities fall … Black power and alcohol [and penicillin].”",
"parent_id": null,
"depth": 1,
"replies": [
{
"com... | 1,760,371,553.959054 | ||
https://hackaday.com/2025/05/06/five-oddest-op-amp-applications/ | Five Oddest Op Amp Applications | Al Williams | [
"Parts"
] | [
"analog",
"op amps",
"parts"
] | You think of op amps as amplifiers because, no kidding, it is right in the name. But just like some people say, “you could do that with a 555,” [Doctor Volt] might say, “
you can do that with an op amp
.” In a recent video, you can see below, he looks at simulations and breadboards for five applications that aren’t tra... | 25 | 10 | [
{
"comment_id": "8125216",
"author": "AZdave",
"timestamp": "2025-05-07T02:16:34",
"content": "A clue to why op amps aren’t simply a traditional amplifier (and never have been) can be found in their name, which is “operational amplifier”.",
"parent_id": null,
"depth": 1,
"replies": [
... | 1,760,371,553.909729 | ||
https://hackaday.com/2025/05/06/a-new-smarter-universal-remote/ | A New, Smarter Universal Remote | Matthew Carlson | [
"home hacks",
"Wireless Hacks"
] | [
"ESP32",
"homeassistant",
"remote",
"smarthome"
] | The remote for [Dillan Stock]’s TV broke,
so he built a remote
. Not just as a replacement but as something new. For some of us, there was a glorious time in the early 2000s when a smart remote was needed and there were options you could buy off the shelf. Just one handy button next to the screen had a macro programmed... | 21 | 6 | [
{
"comment_id": "8125162",
"author": "Miles",
"timestamp": "2025-05-06T22:36:03",
"content": "I was a big fan of the all-in-one you could buy dirt cheap from Radio Shack or Walmart. Even the ‘blue peanut” from Tivo was one of theirs. There were blank pads on the PCB and a 6-pin programming header ... | 1,760,371,554.066254 | ||
https://hackaday.com/2025/05/06/building-a-diy-chicken-incubator/ | Building A DIY Chicken Incubator | Lewin Day | [
"classic hacks"
] | [
"chicken",
"eggs",
"incubator"
] | If you want to keep eggs warm to hatch, you’ll need an incubator. You could buy one off the shelf, but they’re not so complex — just a nicely-controlled warm box you could easily whip up yourself. As it turns out,
that’s precisely what [RCLifeOn] did.
The incubator is built out of wooden panels screwed together to make... | 16 | 9 | [
{
"comment_id": "8125081",
"author": "craig",
"timestamp": "2025-05-06T18:50:17",
"content": "Nice tuning in to HaD and seeing hot chicks!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8125467",
"author": "CAROL",
"timestamp": "2025-05-07T22... | 1,760,371,554.115842 | ||
https://hackaday.com/2025/05/07/jellybean-mac-hides-modern-pc/ | Jellybean Mac Hides Modern PC | Tyler August | [
"Retrocomputing"
] | [
"case",
"imac",
"mac",
"pc"
] | The iMac G3 is an absolute icon of industrial design, as (or perhaps more) era-defining than the Mac Classic before it. In the modern day, if your old iMac even boots, well, you can’t do much with it. [Rick Norcross] got a hold of a dead (hopefully irreparable) specimen, and
stuffed a modern PC inside of it
.
From the ... | 19 | 9 | [
{
"comment_id": "8125524",
"author": "drypaperhammerbro",
"timestamp": "2025-05-08T05:03:49",
"content": "Neat case, shame the CRT was thrown out",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8125547",
"author": "Joshua",
"timestamp": "2025-... | 1,760,371,554.320508 | ||
https://hackaday.com/2025/05/07/superconductivity-news-what-makes-floquet-majorana-fermions-special-for-quantum-computing/ | Superconductivity News: What Makes Floquet Majorana Fermions Special For Quantum Computing? | John Elliot V | [
"Science"
] | [
"Floquet Majorana fermions",
"Josephson effect",
"quantum computing",
"superconductivity",
"topological superconductors"
] | Researchers from the USA and India have proposed that
Floquet Majorana fermions may improve quantum computing by controlling superconducting currents
, potentially reducing errors and increasing stability.
In
a study
published in Physical Review Letters that was co-authored by [Babak Seradjeh], a Professor of Physics a... | 13 | 5 | [
{
"comment_id": "8125520",
"author": "Gravis",
"timestamp": "2025-05-08T03:54:06",
"content": "Numerical simulations are of course only valid if our equations describing reality are an accurate representation. Obviously it’s a reasonable hypothesis that is worth pursuing but it’s impossible to accou... | 1,760,371,554.254319 | ||
https://hackaday.com/2025/05/07/wireless-usb-autopsy/ | Wireless USB Autopsy | Al Williams | [
"Retrocomputing"
] | [
"CF-USB",
"CW-USB",
"usb",
"Wireless USB"
] | It might seem strange to people like us, but normal people hate wires. Really hate wires. A lot. So it makes sense that with so many wireless technologies, there should be a way to do USB over wireless. There is, but it really hasn’t caught on outside of a few small pockets. [Cameron Kaiser] wants to
share why he think... | 22 | 7 | [
{
"comment_id": "8125500",
"author": "D",
"timestamp": "2025-05-08T01:35:42",
"content": "As a hacker, I love cables for myself, but everyone else in my apartment building should feel free to use the RF spectrum if they want.",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,371,554.682979 | ||
https://hackaday.com/2025/05/07/liquid-silicone-3d-printing-is-no-joke/ | Liquid Silicone 3D Printing Is No Joke | Tyler August | [
"3d Printer hacks"
] | [
"3d printing",
"liquid printing",
"silicone"
] | They might call it Levity, but there’s nothing funny about Rapid Liquid Print’s new silicone 3D printer. It has to be seen to be believed, and luckily [3D Printing Nerd] gives us lots of
beauty shots in this short video
, embedded below.
Smooth, and
fast
. This bladder took 51 minutes according to the RLP website.
Prin... | 45 | 14 | [
{
"comment_id": "8125444",
"author": "KR3ATOR",
"timestamp": "2025-05-07T20:14:52",
"content": "Cool tech and nice write-up!I suppose you mean it is more isotropic than FDM (instead of less)?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8125446",
"... | 1,760,371,554.622706 | ||
https://hackaday.com/2025/05/07/floss-weekly-episode-832-give-yourself-a-medal/ | FLOSS Weekly Episode 832: Give Yourself A Medal | Jonathan Bennett | [
"Hackaday Columns",
"Podcasts",
"Slider"
] | [
"CIRCL",
"FLOSS Weekly",
"Kunai"
] | This week,
Jonathan Bennett
chats with
Alexandre
Dulaunoy
and
Quentin Jérôme
about
Kunai
and CIRCL! How does Kunai help solve Linux security monitoring? Why is eBPF the right place for one of these tools to run? And how is CIRCL helping Luxembourg and the world deal with the modern security landscape? Watch to find out... | 0 | 0 | [] | 1,760,371,554.451083 | ||
https://hackaday.com/2025/05/07/germanys-cabinentaxi-the-double-sided-monorail-that-wasnt-meant-to-be/ | Germany’s Cabinentaxi: The Double-Sided Monorail That Wasn’t Meant To Be | Maya Posch | [
"Transportation Hacks"
] | [
"monorail",
"public transportation"
] | The 1970s was a perfect time for alternative modes of transport to be trialed that might replace cars in the wake of the global oil crisis. One of these was the Cabinentaxi, or C-Bahn as it was later called, which was a variation on the standard suspended and monorail concepts.
It was a people mover concept, with ‘pods... | 14 | 8 | [
{
"comment_id": "8125382",
"author": "Aaron",
"timestamp": "2025-05-07T16:16:58",
"content": "“Gadgetbahn”. What a great word. Probably because of Disneyland, I have always loved monorails and am just a little heartbroken that they aren’t really practical.This reminds me quite a lot of the Morgantow... | 1,760,371,554.737449 | ||
https://hackaday.com/2025/05/07/big-chemistry-cement-and-concrete/ | Big Chemistry: Cement And Concrete | Dan Maloney | [
"Engineering",
"Featured",
"Interest",
"Original Art",
"Slider"
] | [
"architecture",
"cement",
"Chemistry",
"concrete"
] | Not too long ago, I was searching for ideas for the next installment of
the “Big Chemistry” series
when I found
an article
that discussed the world’s most-produced chemicals. It was an interesting article, right up my alley, and helpfully contained a top-ten list that I could use as a crib sheet for future articles, at... | 24 | 11 | [
{
"comment_id": "8125379",
"author": "Cheese Whiz",
"timestamp": "2025-05-07T15:58:26",
"content": "On picture #2, is it tilting down to the right or to the left?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8125383",
"author": "Cheese Whiz",
... | 1,760,371,554.851845 | ||
https://hackaday.com/2025/05/04/a-delay-line-memory-demo-board/ | A Delay Line Memory Demo Board | Lewin Day | [
"LED Hacks",
"Retrocomputing"
] | [
"delay line memory",
"memory"
] | Delay line memory is a technology from yesteryear, but it’s not been entirely forgotten. [P-Lab] has developed
a demo board for delay-line memory
, which shows how it worked in a very obvious way with lots of visual aids.
If you’re unfamiliar with the technology, it’s a form of memory that was used in classic computers... | 9 | 5 | [
{
"comment_id": "8124282",
"author": "Quinn Evans",
"timestamp": "2025-05-04T12:12:00",
"content": "Acoustic delay lines (the coiled nickel wire mentioned) are great. Stomp hard enough next to the control box for the 3270s and corrupt everyone’s screen.",
"parent_id": null,
"depth": 1,
"... | 1,760,371,554.784022 | ||
https://hackaday.com/2025/05/04/frnisi-dmc-100-a-clamp-meter-worth-cracking-open/ | Frnisi DMC-100: A Clamp Meter Worth Cracking Open | Heidi Ulrich | [
"Teardown",
"Tool Hacks"
] | [
"clamp meter",
"dmc-100",
"flashlight",
"FNIRSI",
"probes"
] | Not all clamp meters are the same, and this video shows just that. In
a recent teardown by [Kerry Wong]
, the new Fnirsi DMC-100 proves that affordable doesn’t mean boring. This 10,000-count clamp meter strays from the classic rotary dial in favour of a fully button-based interface – a choice that’s got sparks flying i... | 17 | 7 | [
{
"comment_id": "8124227",
"author": "Cricri",
"timestamp": "2025-05-04T08:27:20",
"content": "Typo in title: FNIRSI, not FRNISI.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "8124235",
"author": "helge",
"timestamp": "2025-05-04T09:15:34",
... | 1,760,371,554.909512 |
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