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https://hackaday.com/2018/07/19/hackers-on-planet-earth-here-we-come/ | Hackers On Planet Earth, Here We Come! | Mike Szczys | [
"cons"
] | [
"HOPE XII"
] | This weekend is
HOPE XII
. The Hackers on Planet Earth conference is a biennial event held in New York City.
Dating all the way back to 1994, HOPE is an excellent collection of people and ideas. I was lucky enough to attend two years ago (my first time) and had a fantastic time meeting Cory Doctorow after
his rousing t... | 7 | 4 | [
{
"comment_id": "4761332",
"author": "Ostracus",
"timestamp": "2018-07-19T16:43:29",
"content": "“Dating all the way back to 1994, HOPE is an excellent collection of people and ideas. ”A real-life TED talks.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "476... | 1,760,374,287.979279 | ||
https://hackaday.com/2018/07/19/expanding-the-k40-laser-cutter-with-aluminum-extrusion/ | Expanding The K40 Laser Cutter With Aluminum Extrusion | Brian Benchoff | [
"Laser Hacks"
] | [
"K40",
"K40 laser cutter",
"laser cutter"
] | The K40 laser cutter is an excellent option if you need to laze some plywood or acrylic. It’s ubiquitous, it’s cheap, and there’s a vast community out there that will help you support any issue you could have. Unfortunately, the K40 laser cutter is lacking. It has a small bed, and it doesn’t have the latest technology ... | 34 | 12 | [
{
"comment_id": "4759637",
"author": "norro211",
"timestamp": "2018-07-19T15:04:36",
"content": "This acrylic case clearly isn’t laser safe though! The metal case is the one good part that doesn’t need replacing.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id"... | 1,760,374,288.476013 | ||
https://hackaday.com/2018/07/19/delta-clipper-a-1990s-reusable-single-stage-to-orbit-spaceship-prototype/ | Delta Clipper: A 1990s Reusable Single-Stage To Orbit Spaceship Prototype | Steven Dufresne | [
"Featured",
"History",
"Slider",
"Space"
] | [
"DC-X",
"delta clipper",
"rocket",
"spaceship",
"vtol"
] | With all the talk of SpaceX and Blue Origin sending rockets to orbit and vertically landing part or all of them back on Earth for reuse you’d think that they were the first to try it. Nothing can be further from the truth. Back in the 1990s, a small team backed by McDonnell Douglas and the US government vertically laun... | 51 | 10 | [
{
"comment_id": "4759255",
"author": "Robert Mateja",
"timestamp": "2018-07-19T14:07:43",
"content": "If only someone with funds can grab this idea, add modern tech and engineers that would be breakthrough in reusable space crafts. Maybe we can find at least 2 people with that vision.",
"parent_... | 1,760,374,288.163482 | ||
https://hackaday.com/2018/07/19/whats-inside-a-scientology-e-meter/ | What’s Inside A Scientology E-Meter? | Brian Benchoff | [
"Slider",
"Teardown"
] | [
"e-meter",
"teardown"
] | This is something we’ve been waiting a very long time for. The Church of Scientology uses devices called E-Meters to measure Thetans in the body. We’re not going to discuss this further, because we don’t want to be murdered. In reality, the E-Meter is simply a device that costs five thousand dollars and only measures t... | 146 | 47 | [
{
"comment_id": "4758454",
"author": "4710481676",
"timestamp": "2018-07-19T11:04:59",
"content": "I’d take a guess on this, but someone obviously didn’t want them to be confiscated by the RoHS/EMC Mafiosi at the border(s).",
"parent_id": null,
"depth": 1,
"replies": [
{
"c... | 1,760,374,288.705336 | ||
https://hackaday.com/2018/07/19/a-farewell-to-printrbot/ | A Farewell To Printrbot | Tom Nardi | [
"3d Printer hacks",
"News",
"Slider"
] | [
"3d printing",
"Brook Drumm",
"makerbot",
"printrbot"
] | It’s with a heavy heart that we must report Printrbot has announced they are ceasing operations. Founded in 2011 after a wildly successful Kickstarter campaign, the company set out to make 3D printing cheaper and easier. Their first printer was an amalgamation of printed parts and wood that at the time offered an incre... | 71 | 37 | [
{
"comment_id": "4758175",
"author": "Gregg Eshelman",
"timestamp": "2018-07-19T08:19:38",
"content": "The Malyan M200 and Monoprice’s importing of it took a huge bite out of the low price 3D printer market by coming out of the box fully assembled, needing only checking the bed level to be ready to ... | 1,760,374,288.273318 | ||
https://hackaday.com/2018/07/18/twitch-stream-turned-infinity-mirror/ | Twitch Stream Turned Infinity Mirror | Tom Nardi | [
"Software Hacks",
"Video Hacks"
] | [
"feedback",
"infinity mirror",
"stream",
"twitch"
] | Most Hackaday readers are likely to be familiar with the infinity mirror, a piece of home decor so awesome that Spock still has one up on the wall in 2285. The idea is simple: two parallel mirrors bounce and image back and forth, which creates a duplicate reflection that seems to recede away into infinity. A digital ve... | 6 | 5 | [
{
"comment_id": "4757978",
"author": "neotechni",
"timestamp": "2018-07-19T05:47:53",
"content": "“Spock still has one up on the wall in 2285. ”Ha!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4758242",
"author": "IAmNotTheSame",
"timestamp": "2018-0... | 1,760,374,288.526465 | ||
https://hackaday.com/2018/07/18/understanding-math-vs-understanding-math/ | Understanding Math Vs Understanding Math | Al Williams | [
"Misc Hacks"
] | [
"convolution",
"fourier series",
"fourier transform",
"math"
] | One of the things hard about engineering — electrical engineering, in particular — is that you can’t really visualize what’s important. Sure, you can see a resistor and an LED in your hands, but the real stuff that we care about — electron flow, space charge, and all that — is totally abstract. If you just tinker, you ... | 26 | 11 | [
{
"comment_id": "4757646",
"author": "Ren",
"timestamp": "2018-07-19T02:22:51",
"content": "And if Mathias is standing on your shoulders, you are standing under Math!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4757728",
"author": "Pirate Tom",
... | 1,760,374,288.824696 | ||
https://hackaday.com/2018/07/20/sharpies-and-glue-sticks-fight-the-gummy-metal-machining-blues/ | Sharpies And Glue Sticks Fight The Gummy Metal Machining Blues | Dan Maloney | [
"Misc Hacks"
] | [
"aluminum",
"chip",
"chip formation",
"copper",
"cutting tool",
"dykem",
"glue",
"gummy",
"machining",
"sharpie",
"shear planes",
"steel"
] | “Gummy” might not be an adjective that springs to mind when describing metals, but anyone who has had the flutes of a drill bit or end mill jammed with aluminum will tell you that certain metals do indeed behave in unhelpful ways. But
a new research paper
seeks to shed light on the gummy metal phenomenon, and may just ... | 25 | 11 | [
{
"comment_id": "4763521",
"author": "Arcturus",
"timestamp": "2018-07-20T08:21:11",
"content": "When will people learn to use ethanol as cutting fluid? Works VERY good for cutting, drilling, filing etc. No mess to clean up afterwards either. I once heard about some morons using diesel for this – I’... | 1,760,374,288.764527 | ||
https://hackaday.com/2018/07/19/a-super-simple-esp8266-iot-motion-sensor/ | A Super Simple ESP8266 IOT Motion Sensor | Tom Nardi | [
"Microcontrollers"
] | [
"ESP8266",
"IoT",
"motion",
"pir",
"wemos d1 mini"
] | It’s really hard to overstate how awesome ESP8266 development boards like the Wemos D1 Mini really are. For literally a couple of dollars you can get a decently powerful Wi-Fi enabled microcontroller that has enough free digital pins to do some useful work. Like the Arduino and Raspberry Pi before it, the ESP8266 is a ... | 31 | 8 | [
{
"comment_id": "4763292",
"author": "JD",
"timestamp": "2018-07-20T06:10:57",
"content": "Great project, but that soldering makes me cringe.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4763370",
"author": "Cyk",
"timestamp": "2018-07-20T0... | 1,760,374,288.408148 | ||
https://hackaday.com/2018/07/19/a-slightly-scientific-examination-of-epoxies/ | A Slightly Scientific Examination Of Epoxies | Brian Benchoff | [
"hardware"
] | [
"epoxy",
"glue",
"JB Weld"
] | Two-part epoxy is one of those must-have items in your toolbox, albeit kept in a ziploc bag to keep all that goo off the rest of your tools. It’s a glue with a million uses, but which brand is best? Should you keep some cheap five-minute epoxy around, or should you splurge for the fancy, long-setting JB Weld. It’s not ... | 31 | 18 | [
{
"comment_id": "4763124",
"author": "Adobe/Flash hater",
"timestamp": "2018-07-20T04:26:27",
"content": "The surface prep is a fail.Always double wipe with a cotton cloth dampened with a non-residue solvent.Use a clean rag or portion of it for each pass.Dust from grinding the mill scale and rust of... | 1,760,374,288.336339 | ||
https://hackaday.com/2018/07/19/thinking-inside-the-cardboard-box-with-nintendo-labo-hacks/ | Thinking Inside The (Cardboard) Box With Nintendo Labo Hacks | Roger Cheng | [
"Nintendo Hacks"
] | [
"cardboard",
"cardboard box",
"contest",
"contests",
"joy-con",
"Labo",
"nintendo",
"Nintendo Switch",
"switch"
] | Cardboard is one of the easiest ways to build something physical, far easier than the 3D printing and laser cutting we usually write about here. So when Nintendo released their Labo line of cardboard accessories, it doesn’t take a genius to predict the official product would be followed by a ton of user creations. Nint... | 2 | 1 | [
{
"comment_id": "4762967",
"author": "jcverive",
"timestamp": "2018-07-20T01:51:18",
"content": "!!!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4775210",
"author": "Rodney McKay",
"timestamp": "2018-07-25T19:56:12",
"content": "Ba... | 1,760,374,288.870706 | ||
https://hackaday.com/2018/07/19/mario-candy-machine-gamifies-halloween/ | Mario Candy Machine Gamifies Halloween | Kristina Panos | [
"Games",
"Holiday Hacks",
"Lifehacks"
] | [
"candy dispenser",
"candy machine",
"gear motor",
"halloween",
"relay",
"super mario bros"
] | Picture it: Halloween, 2018. You want to go to a party or take the kids out trick-or-treating, but remember what happened last year when you weren’t there to answer the door? A pack of wild children blew their allowances on 48 rolls of the cheapest toilet paper ever printed, and it took you four full hours to get all t... | 5 | 5 | [
{
"comment_id": "4762933",
"author": "cde",
"timestamp": "2018-07-20T01:17:33",
"content": "Should have made it Nintendo Hard tho :D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4762976",
"author": "Ren",
"timestamp": "2018-07-20T02:01:03",
"cont... | 1,760,374,289.015922 | ||
https://hackaday.com/2018/07/19/energy-harvesting-design-doesnt-need-sleep/ | Energy Harvesting Design Doesn’t Need Sleep | Donald Papp | [
"Microcontrollers",
"Solar Hacks",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"arduino",
"attiny85",
"bpw34",
"energy harvesting",
"photodiode",
"Power Harvesting",
"solar cell",
"solar power"
] | Every scrap of power is precious when it comes to power harvesting, and working with such designs usually means getting cozy with a microcontroller’s low-power tricks and sleep modes. But in the case of the
Ultra Low Power Energy Harvester design
by [bobricius], the attached microcontroller doesn’t need to worry about ... | 10 | 4 | [
{
"comment_id": "4762056",
"author": "Doc Oct",
"timestamp": "2018-07-19T18:55:58",
"content": "I’m guessing the photodiodes don’t provide as much power as even a solar panel meant for a solar powered calculator would use?Could be interesting to build something like this to ping out a temperature re... | 1,760,374,289.060771 | ||
https://hackaday.com/2018/07/19/using-pad-printers-to-add-color-to-artistic-pcbs/ | Using Pad Printers To Add Color To Artistic PCBs | Brian Benchoff | [
"Hackaday Columns",
"Skills",
"Slider"
] | [
"badgelife",
"color pcb",
"lithography",
"manufacturing",
"pad printing",
"photolithography"
] | I’ve done a few experiments in adding color to printed circuit boards.
These experiments used a process known as pad printing
, and so far all indications are that pad printing is a viable process for truly multicolor artistic PCBs. For this year’s DEF CON, I’m stepping things up and taking them to their logical conclu... | 11 | 8 | [
{
"comment_id": "4761433",
"author": "Brian Cockburn",
"timestamp": "2018-07-19T17:13:12",
"content": "Surely there’s a niche here for the prototyping PCB services to offer a better range of ‘silkscreens’ and also multiple silkscreen layers. Wouldn’t a board with a white resist and then black and r... | 1,760,374,289.257955 | ||
https://hackaday.com/2018/07/20/arduino-powered-arcade-button-lighting-effects/ | Arduino Powered Arcade Button Lighting Effects | Tom Nardi | [
"Arduino Hacks",
"Games",
"LED Hacks"
] | [
"arcade",
"arduino",
"led",
"lighting effect",
"pwm"
] | As if you already weren’t agonizing over whether or not you should build your own arcade cabinet, add this one to the list of compelling reasons why you should dedicate an unreasonable amount of physical space to playing games you’ve probably already got emulated on your phone. [Rodrigo] writes in to show off his proje... | 4 | 2 | [
{
"comment_id": "4764777",
"author": "Lord Nothing",
"timestamp": "2018-07-20T20:35:53",
"content": "i did a hackier version of same a couple years ago. not as nice looking as this one though.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4765520",
"autho... | 1,760,374,289.193909 | ||
https://hackaday.com/2018/07/20/bucky-glow-have-a-ball-while-you-practice-coding/ | Bucky Glow: Have A Ball While You Practice Coding | Kristina Panos | [
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"arduino nano",
"dodecahedron",
"midi controller",
"RGB LEDs"
] | About a year ago, [Jonathan Bumstead] built a
giant, touch-sensitive, interactive RGB LED geodesic dome
that somehow escaped our attention entirely. For this year’s Hackaday Prize, he’s designed a smaller version that’s just as awesome, but a lot faster and easier to build.
The Bucky Glow is great way for hackers of al... | 2 | 2 | [
{
"comment_id": "4765118",
"author": "Xerxes3rd",
"timestamp": "2018-07-20T22:48:14",
"content": "That’s really cool, and very well executed! Seems like a good fit for an ESP8266/32 so you could control it over WiFi instead of having a desktop-based app.",
"parent_id": null,
"depth": 1,
... | 1,760,374,289.293704 | ||
https://hackaday.com/2018/07/20/belgrade-badge-hacks/ | Belgrade Badge Hacks | Brian Benchoff | [
"cons",
"Hackaday Columns",
"Slider"
] | [
"badge hacking",
"badgelife",
"badges",
"basic badge",
"Hackaday Belgrade 2018"
] | We’re still coming off the Hackaday Belgrade conference right now. If you were there, you know it was the greatest hardware conference ever. If you weren’t there, you missed out. Sorry. (Make sure you get in on the
Hackaday Superconference
in November.)
One of the many highlights of the Belgrade conference was, of cour... | 6 | 5 | [
{
"comment_id": "4764563",
"author": "Ren",
"timestamp": "2018-07-20T17:52:36",
"content": "I’m guessing with your recent post, Brian, that this upcoming badge will have the interface for all those badgettes you’re making.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comm... | 1,760,374,289.632632 | ||
https://hackaday.com/2018/07/20/hackaday-passes-100000-subscribers-on-youtube/ | Hackaday Passes 100,000 Subscribers On YouTube | Mike Szczys | [
"Hackaday Columns",
"Slider",
"Video Hacks"
] | [
"hackaday",
"subscribers",
"youtube"
] | Check it out, the Hackaday YouTube channel just passed 100,000 Subscribers! Thank you to everyone who has been following the great stream of videos on our channel. If you’re not yet following us,
now’s the time
!
We’ve upped our video content game over the last couple of years and the steady stream of awesome is the re... | 19 | 9 | [
{
"comment_id": "4764470",
"author": "Tyranis Khan",
"timestamp": "2018-07-20T16:46:34",
"content": "Hackaday has a Youtube channel? And Brian Benchoff videos? AWESOME!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4764491",
"author": "Lucas",
... | 1,760,374,289.497976 | ||
https://hackaday.com/2018/07/20/build-a-boat-with-your-buddies/ | Build A Boat With Your Buddies | Jenny List | [
"Transportation Hacks"
] | [
"boat",
"electric outboard",
"homemade boat",
"outboard motor",
"plywood boat"
] | It’s probably a dream common to many groups of friends among the Hackaday readership: go away together to a sunny island some time in the summer, take a load of beer and maybe a BBQ, and build something. Some of us get close to it at hacker camps such as Toorcamp or EMF, but few do it as well as [KristianKalm] and his ... | 20 | 7 | [
{
"comment_id": "4764340",
"author": "norro211",
"timestamp": "2018-07-20T15:02:36",
"content": "Should be wearing a life jacket",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4764346",
"author": "Ren",
"timestamp": "2018-07-20T15:09:45",
... | 1,760,374,289.436681 | ||
https://hackaday.com/2018/07/20/learn-to-count-in-seximal-its-a-position-above-the-rest/ | Learn To Count In Seximal, A Position Above The Rest | Tucker Ervin | [
"Featured",
"Interest",
"Original Art"
] | [
"binary",
"counting",
"duodecimal",
"hexadecimal",
"history",
"math",
"numbers",
"numerals",
"senary",
"seximal",
"ternary"
] | Believe it or not, counting is not special.
Quite a few animals have figured it out over the years
. Tiny honeybees compare what is less and what is more, and their brains are smaller than a pinky nail.
They even understand the concept of zero
, which — as anyone who has had to teach a toddler knows — is rather difficu... | 42 | 18 | [
{
"comment_id": "4764222",
"author": "Ostracus",
"timestamp": "2018-07-20T14:08:24",
"content": "Starts with four fingers, and a thumb.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4764243",
"author": "Darren",
"timestamp": "2018-07-20T14:18:13",
... | 1,760,374,289.733507 | ||
https://hackaday.com/2018/07/20/the-c-h-i-p-returns-maybe/ | The C.H.I.P Returns, Maybe | Jenny List | [
"hardware",
"News"
] | [
"C.H.I.P.",
"C.H.I.P. Pro",
"Next Thing Co."
] | Remember the C.H.I.P? The little ARM-based and Linux-capable single board computer that was launched in 2015 at what was then a seemingly impossibly cheap price of $9, then took ages to arrive before fading away and the company behind it going under? Like a zombie,
it has returned from the dead
!
So, should we be reach... | 36 | 12 | [
{
"comment_id": "4763951",
"author": "makomk",
"timestamp": "2018-07-20T11:35:20",
"content": "That’s odd. The C.H.I.P. Pro may have an open source PCB, but as far as I know next Thing Co were the only source for the GR8 chip at the heart of it. So I’m not sure how anyone else could build clones now... | 1,760,374,289.568971 | ||
https://hackaday.com/2018/07/18/harley-hardened-wire-helps-high-gain-antenna-hack/ | Harley-Hardened Wire Helps High-Gain Antenna Hack | Dan Maloney | [
"Radio Hacks"
] | [
"antenna",
"collinear",
"copper",
"Harley-Davidson",
"LoRa",
"motorcycle",
"stiffness",
"strain-hardening",
"stretch",
"work-hardening"
] | What does a Harley-Davidson motorcycle have to do with building antennas? Absolutely nothing, unless you happen to have one and need to
work-harden copper wire to build a collinear antenna for LoRa
.
We’ll explain. Never being one to settle, [Andreas Spiess] needed a better antenna for his LoRa experiments. Looking for... | 46 | 15 | [
{
"comment_id": "4757288",
"author": "TERRA Operative",
"timestamp": "2018-07-18T23:32:36",
"content": "And in my day, a wire-stretcher was something you sent the apprentice to go and get. It’s in the shed next to the sky-hooks and left handed screwdrivers.",
"parent_id": null,
"depth": 1,
... | 1,760,374,289.820974 | ||
https://hackaday.com/2018/07/18/3d-printed-gun-saga-court-case-over-cad-files-settled/ | 3D Printed Gun Saga: Court Case Over CAD Files Settled | Mike Szczys | [
"Current Events",
"Hackaday Columns",
"News"
] | [
"3d printed gun",
"CAD files",
"Defense Distributed",
"itar",
"settlement"
] | Can you create 3D printed designs and distribute them freely and without restriction? Maybe, and it’s likely to become easier in the future. A settlement has been reached in the saga of the US Department of State versus Cody Wilson, and beginning August 1st the Defense Distributed library of gun designs will once again... | 88 | 27 | [
{
"comment_id": "4756643",
"author": "Ren",
"timestamp": "2018-07-18T20:09:42",
"content": "“When the plastic latch on your dishwasher breaks, what are your options?”Well, if it is a Kenmore dishwasher, even replacement parts will not be stocked if/when Sears goes under.",
"parent_id": null,
... | 1,760,374,289.9962 | ||
https://hackaday.com/2018/07/18/dual-brushed-motor-controller-doesnt-care-how-it-receives-commands/ | Dual Brushed Motor Controller Doesn’t Care How It Receives Commands | Ben James | [
"Robots Hacks",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"brushed",
"dc",
"driver",
"i2c",
"lyra-5a",
"motor"
] | The simple DC brushed motor is at the heart of many a robotics project. For making little toy bots that zip around the house, you can’t beat the price and simplicity of a pair of brushed motors. They’re also easy to control; you could roll your own H-bridge out of discrete transistors, or pick up one of the commonly us... | 3 | 3 | [
{
"comment_id": "4757760",
"author": "Gravis",
"timestamp": "2018-07-19T03:19:50",
"content": "Impressed by IR receiver but disappointed at the lack of CAN bus. :(",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4759617",
"author": "Rudy vK",
"timestamp... | 1,760,374,289.870165 | ||
https://hackaday.com/2018/07/18/errf-18-the-start-of-something-great/ | ERRF 18: The Start Of Something Great | Tom Nardi | [
"3d Printer hacks",
"cons",
"Hackaday Columns"
] | [
"3d printing",
"ERRF",
"ERRF 18",
"reprap"
] | For years, the undisputed king of desktop 3D printing conferences has been the Midwest RepRap Festival (MRRF). Hosted in the tropical paradise that is Goshen, Indiana, MRRF has been running largely unopposed for the top spot since its inception. There are other conferences focused on the industrial and professional end... | 7 | 4 | [
{
"comment_id": "4756329",
"author": "Ostracus",
"timestamp": "2018-07-18T17:23:11",
"content": "Tropical paradise indeed. At least Maryland should be more comfortable (and picturesque).",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4756360",
"author": "C... | 1,760,374,290.056825 | ||
https://hackaday.com/2018/07/18/hot-camera-contest-build-a-battery-powered-thermal-camera/ | Hot Camera Contest: Build A Battery Powered Thermal Camera | Brian Benchoff | [
"contests",
"hardware"
] | [
"contest",
"flir",
"Flir lepton",
"thermal imaging camera"
] | Here’s a challenge for all you hardware hackers out there. Peter Jansen has opened up
the Hot Camera Contest
on Hackaday.io to use a thermal imaging camera in a battery-powered project.
The challenge here is simple. Use a Flir Lepton thermal imaging camera module in a battery-powered configuration. There’s a catch, tho... | 36 | 11 | [
{
"comment_id": "4756265",
"author": "Jan",
"timestamp": "2018-07-18T16:46:19",
"content": "So if I understand correctly, I first must invest (Sparkfun: $293,95 excluding shipment costs OR Groupgets: 397,00 excluding shipment costs) in order to “win” a prize of $125.Looks to me that the real winner ... | 1,760,374,290.135051 | ||
https://hackaday.com/2018/07/18/transforming-a-bookshelf-speaker-into-a-portable-boombox/ | Transforming A Bookshelf Speaker Into A Portable Boombox | Steven Dufresne | [
"digital audio hacks"
] | [
"18650",
"amp",
"boombox",
"speaker"
] | There’s a lot of fun to be had in modernizing an old boombox but what about
turning one of those ubiquitous shelf speakers into a portable boombox
, complete with a handle for carrying? That’s what [GreatScott] did when a friend gave him a just such a shelf speaker.
These days you’d very likely use your phone as the au... | 7 | 3 | [
{
"comment_id": "4756546",
"author": "Marty",
"timestamp": "2018-07-18T19:11:48",
"content": "It would have been acceptable if the bookshelf speaker was broken in the first place, but no, he actually ruined a still-working one.IMO this one’s not a hack but vandalism.",
"parent_id": null,
"de... | 1,760,374,290.287552 | ||
https://hackaday.com/2018/07/18/what-to-expect-when-youre-expecting-a-trademark/ | What To Expect When You’re Expecting – A Trademark | Bob Baddeley | [
"Business",
"Featured",
"Original Art"
] | [
"brand",
"copyright",
"patent",
"trademark"
] | A trademark represents a brand, so it can be words like “Apple”, including made up words like “Kleenex”. It can be symbols, like the Nike swoosh. It can also be colors, like UPS brown, and even scents like the flowery musk scent in Verizon stores. Filing a trademark in the United States is surprisingly easy. With a cou... | 18 | 9 | [
{
"comment_id": "4755885",
"author": "Luke A.",
"timestamp": "2018-07-18T14:19:04",
"content": "It costs me about $1000 each time to have a lawyer handle the registration for me, in the Atlanta area. Not trying to debate whether its a good idea to attempt it yourself, but thought folks might be cur... | 1,760,374,290.457176 | ||
https://hackaday.com/2018/07/18/diy-tube-oven-brings-the-heat-to-homebrew-semiconductor-fab/ | DIY Tube Oven Brings The Heat To Homebrew Semiconductor Fab | Dan Maloney | [
"Tool Hacks"
] | [
"alumina",
"ceramic",
"fab",
"fabrication",
"furnace",
"kanthal",
"oven",
"pid",
"refractory",
"semiconductor",
"thermocouple"
] | Specialized processes require specialized tools and instruments, and processes don’t get much more specialized than the making of semiconductors. There’s a huge industry devoted to making the equipment needed for semiconductor fabrication plants, but most of it is fabulously expensive and out of reach to the home gamer... | 16 | 4 | [
{
"comment_id": "4755628",
"author": "Ostracus",
"timestamp": "2018-07-18T11:13:50",
"content": "“Specialized processes require specialized tools and instruments, and processes don’t get much more specialized than the making of semiconductors. There’s a huge industry devoted to making the equipment ... | 1,760,374,290.39729 | ||
https://hackaday.com/2018/07/18/how-low-can-you-go-tiny-current-generator/ | How Low Can You Go? Tiny Current Generator | Jenny List | [
"hardware"
] | [
"current limiting",
"current source",
"pnp",
"transistor"
] | Current limited power supplies are a ubiquitous feature of the bench, and have no doubt helped prevent many calamities and much magic smoke being released from pieces of electronics. But for all their usefulness they are a crude tool that has a current resolution in the range of amps rather than single digit milliamps ... | 19 | 4 | [
{
"comment_id": "4755378",
"author": "Cyk",
"timestamp": "2018-07-18T08:36:33",
"content": "Does this really work that well with unmatched and not thermally coupled transistors?I would’ve used something like a BCM857BS.https://www.nexperia.com/products/bipolar-transistors/general-purpose-bipolar-tra... | 1,760,374,290.344398 | ||
https://hackaday.com/2018/07/17/the-biggest-corner-antenna-weve-ever-seen/ | The Biggest Corner Antenna We’ve Ever Seen | Brian McEvoy | [
"Radio Hacks"
] | [
"antenna",
"astronomy",
"chicken wire",
"corner antenna",
"fence",
"pulsar",
"Radio Astronomy"
] | Radio waves are received on antennas, for which when the signal in question comes over a long distance a big reflector is needed. When the reception distance is literally astronomical, the reflector has to be pretty darn big. [The Thought Emporium] wants to
pick up signals from distant satellites
, the moon, and hopefu... | 23 | 10 | [
{
"comment_id": "4755277",
"author": "steves",
"timestamp": "2018-07-18T07:12:49",
"content": "Hmm, can’t help but be thinking that his $200 hasn’t been well spent.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4755390",
"author": "Cyk",
"ti... | 1,760,374,290.518399 | ||
https://hackaday.com/2018/07/17/bomb-hoist-teardown-shows-cold-war-era-big-iron/ | Bomb Hoist Teardown Shows Cold-War-Era Big Iron | Jenny List | [
"Teardown"
] | [
"bomb hoist",
"cold war",
"gearbox",
"gears",
"motor"
] | Buying surplus equipment lends a frisson of excitement as you eagerly await the package or crate containing your purchase. Did you buy a hidden treasure, or has some shyster succeeded in unloading a pile of garbage onto you, their mark? [Professor Churls] shelled out $49.99 for a military surplus bomb hoist which defin... | 10 | 5 | [
{
"comment_id": "4755467",
"author": "Jii",
"timestamp": "2018-07-18T09:27:59",
"content": "Nice, i wish i had access to one.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4755564",
"author": "Martin",
"timestamp": "2018-07-18T10:16:54",
... | 1,760,374,290.605481 | ||
https://hackaday.com/2018/07/17/teensy-hat-controls-games/ | Teensy Hat Controls Games | Al Williams | [
"Arduino Hacks"
] | [
"accelerometer",
"head mounted",
"Joystick"
] | [Carson] didn’t know how to use an accelerometer until he wired one up to a Teensy and put it all in a hat. The result is
a joystick
that will probably cause you neck problems if you play video games for very long. You can see a video of how the device came to be and how it works, below.
We liked the approach of buildi... | 3 | 2 | [
{
"comment_id": "4754552",
"author": "RFP-A",
"timestamp": "2018-07-18T00:41:06",
"content": "That video is too annoying to watch for me at this point.Also it’s a video.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4755268",
"author": "Yarr",
... | 1,760,374,290.557927 | ||
https://hackaday.com/2018/07/17/beverage-holder-of-science/ | Beverage Holder Of Science | Brian McEvoy | [
"Beer Hacks",
"how-to"
] | [
"beer",
"beverage",
"cola",
"cozy",
"koozie",
"magnets",
"neodymium",
"soda"
] | The folks at [K&J Magnetics] have access to precise magnetometers, a wealth of knowledge from years of experience but when it comes to playing around with a silly project like a
magnetic koozie
, they go right to trial and error rather than simulations and calculations. Granted, this is the opposite of mission-critical... | 8 | 3 | [
{
"comment_id": "4754324",
"author": "Paul",
"timestamp": "2018-07-17T20:38:30",
"content": "Dang. When I saw “K&J Magnetics” and “beverage” I was really hoping they had cobbled together a magnetic refrigerator for beer. (see, for example,https://en.wikipedia.org/wiki/Magnetic_refrigeration)",
... | 1,760,374,291.150361 | ||
https://hackaday.com/2018/07/17/spines-design-makes-for-modular-energy-harvesting/ | SPINES Design Makes For Modular Energy Harvesting | Donald Papp | [
"Solar Hacks",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"arduino",
"energy harvesting",
"IoT",
"Power Harvesting",
"sensor node",
"solar",
"SPINES",
"wireless"
] | The
SPINES (Self-Powered IoT Node for Environmental Sensing) Mote
is a wireless IoT environmental sensor, but don’t let the neatly packed single PCB fool you into thinking it’s not hackable. [Macro Yau] specifically designed SPINES to be highly modular in order to make designing an energy harvesting sensor node an easi... | 7 | 4 | [
{
"comment_id": "4754138",
"author": "Steve Spence - KK4HFJ",
"timestamp": "2018-07-17T18:39:21",
"content": "Since when is connecting a solar panel to a microcontroller “ambient energy harvesting” ….",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4754213",
... | 1,760,374,291.103131 | ||
https://hackaday.com/2018/07/16/acrylic-stencils-help-with-component-placement-for-smd-assembly/ | Acrylic Stencils Help With Component Placement For SMD Assembly | Dan Maloney | [
"Tool Hacks"
] | [
"acrylic laser cutter",
"assembly",
"pcb",
"pick and place",
"placement",
"smd",
"smt",
"stencil",
"surface mount"
] | Surface mount is where the action is in the world of DIY PCBs, and deservedly so. SMDs are so much smaller than through-hole components, and fewer holes to drill make surface-mount PCBs easier to manufacture. Reflow soldering is even a snap now thanks to DIY ovens and solder stencils you can get when you order your boa... | 12 | 4 | [
{
"comment_id": "4751537",
"author": "Mike",
"timestamp": "2018-07-16T11:18:08",
"content": "You’re mirroring the Adafruit blog a bit too closely in my personal opinion",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4751668",
"author": "deshipu",
... | 1,760,374,291.206824 | ||
https://hackaday.com/2018/07/16/its-1984-and-you-cant-afford-a-computer-never-mind-have-this-pop-up-paper-one-instead/ | It’s 1984, And You Can’t Afford A Computer. Never Mind, Have This Pop-Up Paper One Instead! | Jenny List | [
"Retrocomputing"
] | [
"books",
"papercraft",
"pop-up",
"retrocomputing"
] | It’s an oft-derided sentiment from a Certain Type of Older Person, that the Youth of Today don’t know how lucky they are with their technology. Back when they were young they were happy with paper and string! Part of the hilarity comes from their often getting the technology itself wrong, for example chastising the you... | 40 | 17 | [
{
"comment_id": "4751199",
"author": "Sutfuf",
"timestamp": "2018-07-16T08:05:28",
"content": "Lol. I had that exact book when i was “little”. I wonder if it’s still around.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4751737",
"author": "Absolut... | 1,760,374,291.483534 | ||
https://hackaday.com/2018/07/15/incredible-atari-800xl-case-restoration/ | Incredible Atari 800XL Case Restoration | Tom Nardi | [
"Repair Hacks",
"Retrocomputing"
] | [
"atari 800xl",
"mold making",
"polyester",
"resin",
"restoration"
] | If you’ve been hanging around Hackaday for a while, you know that a large portion of the stuff we publish goes above and beyond what most people would consider a reasonable level of time and effort. One could argue that’s sort of the point: the easy way out is rarely the most exciting and interesting route you can take... | 29 | 12 | [
{
"comment_id": "4750698",
"author": "macona",
"timestamp": "2018-07-16T05:21:44",
"content": "Nice job. But why? You can get a good condition 800XL for less than $100 on ebay, he probably spent almost that much in mold material.",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,374,291.355117 | ||
https://hackaday.com/2018/07/15/dual-source-laser-cutter-built-like-a-tank-cuts-most-anything/ | Dual Source Laser Cutter Built Like A Tank, Cuts Most Anything | Richard Baguley | [
"Laser Hacks"
] | [
"laser cutter"
] | Laser cutters aren’t the sort of thing that you might think about making at home, but there’s no reason not to if you are careful and do your research. That’s what [Daniele Ingrassia] did with the
Laser Duo
, an open source laser cutter that has two light sources for cutting various materials. His final product is not ... | 15 | 6 | [
{
"comment_id": "4750366",
"author": "james",
"timestamp": "2018-07-16T02:39:25",
"content": "looks like a shark tank…………………………………did you get it?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4750450",
"author": "Salsaman",
"timestamp": "2018-07-16T03... | 1,760,374,291.284307 | ||
https://hackaday.com/2018/07/15/hackaday-links-july-15-2018/ | Hackaday Links: July 15, 2018 | Brian Benchoff | [
"Hackaday Columns",
"Hackaday links"
] | [
"arm",
"patent",
"RISC-V",
"wired",
"XYZ Printing"
] | Have you tried Altium CircuitMaker? Uh, you probably shouldn’t. [Dave] of EEVBlog fame informs us via a reliable source that CircuitMaker
is intentionally crippled by adding a random sleep
on high pad-count boards. The hilarious pseudocode suggested on the forum is
if ((time.secs % 3) == 0) delayMicroseconds(padCount *... | 29 | 10 | [
{
"comment_id": "4749883",
"author": "Jerry",
"timestamp": "2018-07-15T23:23:56",
"content": "Wu Wu",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4749918",
"author": "NiHaoMike",
"timestamp": "2018-07-15T23:35:01",
"content": "XYZ apparently is vi... | 1,760,374,291.60372 | ||
https://hackaday.com/2018/07/15/harvesting-power-from-microwave-popcorn/ | Harvesting Power From Microwave Popcorn | Brian Benchoff | [
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"microwave",
"Power Harvesting",
"Power Harvesting Challenge"
] | One of the challenges in this year’s Hackaday Prize is
Power Harvesting
where we’re asking everybody to create something that harvests energy from something. It could be solar, it could be harvesting energy from a falling weight. If you’d like to give a TED talk, it could be harvesting energy from sound waves. It could... | 22 | 6 | [
{
"comment_id": "4749525",
"author": "Justin",
"timestamp": "2018-07-15T21:18:38",
"content": "That mesh on the window is there to minimize the amount of microwaves exciting the microwave so it might make this project a bit difficult.",
"parent_id": null,
"depth": 1,
"replies": [
{... | 1,760,374,291.756604 | ||
https://hackaday.com/2018/07/15/interactive-mandelbrot-set-viewer-runs-on-fpgas/ | Interactive Mandelbrot Set Viewer Runs On FPGAs | Richard Baguley | [
"FPGA"
] | [
"FPGAs",
"mandelbrot"
] | The Mandelbrot Set is a mathematical oddity where a simple function creates an infinitely complex landscape that you can literally zoom into forever. Like most people, I’ve downloaded Mandelbrot set viewers and marveled at the infinite whorls and spirals, and then waited while each frame took minutes or hours to render... | 22 | 11 | [
{
"comment_id": "4749074",
"author": "deskdrawersite",
"timestamp": "2018-07-15T17:20:35",
"content": "I believe you mean DDRR3 memory. DDR5 isn’t projected to be available until late this year.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4749079",
... | 1,760,374,291.411295 | ||
https://hackaday.com/2018/07/17/francoise-barre-sinoussi-virus-hunter/ | Françoise Barré-Sinoussi: Virus Hunter | Steven Dufresne | [
"Biography",
"Hackaday Columns",
"History",
"Original Art"
] | [
"aids",
"centrifuge",
"dna",
"hiv",
"rna",
"virus"
] | It was early 1983 and Françoise Barré-Sinoussi of the prestigious Pasteur Institute in Paris was busy at the centrifuge trying to detect the presence of a retrovirus. The sample in the centrifuge came from an AIDS patient, though the disease wasn’t called AIDS yet.
Barré-Sinoussi and Montagnier in 1983, Image source:
L... | 13 | 6 | [
{
"comment_id": "4754054",
"author": "bty",
"timestamp": "2018-07-17T17:06:44",
"content": "I just saw a report on the discovery of the Ebola Virus back in the late seventies. Back then the samples of a new unknown deadly disease from missionaries in Congo were put in card board boxes that were carr... | 1,760,374,291.537541 | ||
https://hackaday.com/2018/07/17/emotional-hazards-that-lurk-far-from-the-uncanny-valley/ | Emotional Hazards That Lurk Far From The Uncanny Valley | Roger Cheng | [
"Robots Hacks"
] | [
"Christine Sunu",
"cute robot",
"emotion",
"emotional response",
"empathy",
"robot",
"robots",
"uncanny valley"
] | A web search for “Uncanny Valley” will retrieve a lot of information about that discomfort we feel when an artificial creation is eerily lifelike. The syndrome tells us a lot about both human psychology and design challenges ahead. What about the opposite, when machines are clearly machines? Are we all clear? It turns ... | 14 | 9 | [
{
"comment_id": "4753966",
"author": "Ostracus",
"timestamp": "2018-07-17T15:43:26",
"content": "Doesn’t that empathy mean when the robot revolution comes we’ll be ready to hold hands and sing kumbaya with our overlords?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comm... | 1,760,374,291.804979 | ||
https://hackaday.com/2018/07/17/lets-talk-about-elon-musks-submarine/ | Let’s Talk About Elon Musk’s Submarine | Tom Nardi | [
"Current Events",
"Featured",
"News",
"Original Art",
"Slider",
"Transportation Hacks"
] | [
"cave rescue",
"Elon Musk",
"Falcon 9",
"rescue",
"SpaceX",
"submarine"
] | When word first broke that Elon Musk was designing a kid-sized submarine to help rescue the children stuck in Thailand’s Tham Luang cave, it seemed like a logical thing for Hackaday to cover. An eccentric builder of rockets and rocket-launched electric sports cars, pushing his engineering teams and not inconsiderable f... | 223 | 50 | [
{
"comment_id": "4753871",
"author": "Olsen",
"timestamp": "2018-07-17T14:13:40",
"content": "At least it’s an honest attempt. I hope he keeps it around, it may have other uses in longer, wider caves.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4753984",
... | 1,760,374,292.346775 | ||
https://hackaday.com/2018/07/17/freak-out-your-smartphone-with-ultrasound/ | Freak Out Your Smartphone With Ultrasound | Tom Nardi | [
"digital audio hacks",
"Security Hacks",
"Weapons Hacks"
] | [
"accelerometer",
"gyroscope",
"jamming",
"MEMS",
"ultrasonic"
] | There’s a school of thought that says complexity has an inversely proportional relation to reliability. In other words, the smarter you try to make something, the more likely it is to end up failing for a dumb reason. As a totally random example: you’re trying to write up a post for a popular hacking blog, all the whil... | 13 | 7 | [
{
"comment_id": "4753699",
"author": "Mike Rogers",
"timestamp": "2018-07-17T11:35:33",
"content": "This looks like an extension of the “fake steps on your fitbit” technique.https://hackaday.com/2017/03/15/this-wav-file-can-confuse-your-fitbit/",
"parent_id": null,
"depth": 1,
"replies":... | 1,760,374,292.083686 | ||
https://hackaday.com/2018/07/17/cortexprog-is-a-real-arm-twister/ | CortexProg Is A Real ARM-Twister | Elliot Williams | [
"hardware",
"Microcontrollers"
] | [
"arm",
"arm development",
"bootstrapping",
"debugging",
"gdb",
"kickstarter",
"programmer"
] | We’ve got a small box of microcontroller programmers on our desktop. AVR, PIC, and ARM, or at least the STMicro version of ARM. Why? Some program faster, some debug better, some have nicer cables, and others, well, we’re just
sentimental
about. Don’t judge.
[Dmitry Grinberg], on the other hand, is searching for the One... | 32 | 8 | [
{
"comment_id": "4753486",
"author": "jcamdr",
"timestamp": "2018-07-17T08:41:01",
"content": "OpenOCDhttp://openocd.org/allow to program and debug a lot of processors with various probes, including bar GPIO. If only the core team would merge more patches instead of leaving so many of them forever i... | 1,760,374,292.587402 | ||
https://hackaday.com/2018/07/16/row-your-bike-to-china/ | Row Your Bike To China | Bryan Cockfield | [
"Transportation Hacks"
] | [
"bike",
"electric",
"endurance",
"motor",
"panel",
"pedaling",
"RACE",
"rowing",
"solar",
"sun trip",
"tandem"
] | If you’re a fan of endurance racing motor vehicles, there’s one that puts the 24 Hours of Le Mans, the Dakar Rally, and the Baja 1000 to shame, and the race doesn’t even involve cars. Indeed, the vehicles used for this massive trek from France to China are electric bicycles, powered only by solar panels. This is the ep... | 11 | 4 | [
{
"comment_id": "4753761",
"author": "quack",
"timestamp": "2018-07-17T12:25:51",
"content": "I think you mean TRIKE.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4753773",
"author": "Steven-X",
"timestamp": "2018-07-17T12:38:36",
"content": "Whe... | 1,760,374,292.450892 | ||
https://hackaday.com/2018/07/16/fail-of-the-week-when-good-foundries-go-bad/ | Fail Of The Week: When Good Foundries Go Bad | Dan Maloney | [
"Fail of the Week"
] | [
"aluminum",
"casting",
"charcoal",
"coal",
"fail of the week",
"forge",
"foundry",
"furnace",
"kiln",
"lost PLA"
] | Like many of us, [Tony] was entranced by the idea of casting metal, and set about building the tools he’d need to melt aluminum for lost-PLA casting. Little did he know that he was about to
exceed the limits of his system and melt a hole in his patio
.
[Tony]’s tale of woe begins innocently enough, and where it usually... | 33 | 12 | [
{
"comment_id": "4752980",
"author": "jorhlok",
"timestamp": "2018-07-17T02:20:45",
"content": "Ugh, don’t call that man just “The King.” He doesn’t deserve it. The King is definitely Elvis.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4752994",
"a... | 1,760,374,292.520854 | ||
https://hackaday.com/2018/07/15/stepper-motor-encoder-its-both/ | Stepper Motor? Encoder? It’s Both! | Al Williams | [
"Arduino Hacks",
"Microcontrollers"
] | [
"rotary encoder",
"stepper motor"
] | We always think it is interesting that a regular DC motor and a generator are about the same thing. Sure, each is optimized for its purpose, but inefficiencies aside, you can use electricity to rotate a shaft or use a rotating shaft to generate electricity. [Andriyf1] has a slightly different trick. He shows how to
use... | 22 | 12 | [
{
"comment_id": "4748750",
"author": "Robert Mateja",
"timestamp": "2018-07-15T14:07:58",
"content": "As for second part of video, here someone make it with even simpler method ;)https://youtu.be/c2tBwzq4G18?t=10",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id":... | 1,760,374,292.403117 | ||
https://hackaday.com/2018/07/15/drive-big-servos-with-ease/ | Drive Big Servos With Ease | Jenny List | [
"cnc hacks"
] | [
"cnc",
"high voltage servo",
"servo",
"Servo driver"
] | CNC machines of all types are a staple here at Hackaday, in that we have featured many CNC builds over the years. But the vast majority of those that we see are of relatively modest size and assembled in a home workshop, using small and readily available components such as small stepper motors. These drives are a world... | 5 | 5 | [
{
"comment_id": "4748370",
"author": "Andy",
"timestamp": "2018-07-15T11:48:40",
"content": "Project done by Rene Hopfhttps://www.youtube.com/user/gammelpro",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4748835",
"author": "Teg",
"timestamp": "2018-07... | 1,760,374,294.18849 | ||
https://hackaday.com/2018/07/15/watney-a-fully-3d-printed-rover-platform/ | Watney: A Fully 3D Printed Rover Platform | Tom Nardi | [
"3d Printer hacks",
"Robots Hacks"
] | [
"3d printed",
"L298N",
"robotics",
"rover"
] | We’re getting to the point that seeing 3D printed parts in a project or hack isn’t as exciting as it was just a few years ago. The proliferation of low-cost desktop 3D printers means that finding a printer to squirt out a few parts for your build isn’t the adventure it once was. Gone are the days of heading to a local ... | 9 | 3 | [
{
"comment_id": "4747792",
"author": "spiritplumber",
"timestamp": "2018-07-15T08:10:55",
"content": "https://www.youtube.com/watch?v=XmD5N5W7DZsHere’s mine! (STL files on thingiverse, just look for Android Antbot). Admittedly, it uses lego treads.",
"parent_id": null,
"depth": 1,
"repli... | 1,760,374,294.24395 | ||
https://hackaday.com/2018/07/14/robot-maps-rooms-with-help-from-iphone/ | Robot Maps Rooms With Help From IPhone | Bryan Cockfield | [
"Robots Hacks"
] | [
"3d",
"arduino",
"augmented reality",
"computer",
"following",
"mapping",
"node mcu",
"robot",
"unity",
"vision"
] | The Unity engine has been around since Apple started using Intel chips, and has made quite a splash in the gaming world. Unity allows developers to create 2D and 3D games, but there are some other interesting applications of this gaming engine as well. For example, [matthewhallberg] used it to
build a robot that can ma... | 9 | 4 | [
{
"comment_id": "4747668",
"author": "--A",
"timestamp": "2018-07-15T05:54:20",
"content": "only carries AN iPhone",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4747774",
"author": "Xeon",
"timestamp": "2018-07-15T07:52:05",
"content": "So instead... | 1,760,374,294.638138 | ||
https://hackaday.com/2018/07/14/iot-solar-pool-heating/ | IoT Solar Pool Heating | Dan Maloney | [
"home hacks",
"Solar Hacks"
] | [
"emoncms",
"heat",
"hot water",
"pool. swimming",
"pump",
"solar"
] | A backyard swimming pool can be a great place to take a refreshing dip on a summer’s day. It can also be a place to freeze your giblets off if the sun has been hiding for even a few hours. That can make pools an iffy proposition unless they’re heated, and that starts to get really expensive in terms of upfront costs an... | 10 | 8 | [
{
"comment_id": "4747397",
"author": "dcfusor2015",
"timestamp": "2018-07-15T02:08:20",
"content": "Although a better term for this at my place is LAN of things, or maybe just home automation, I do the same sorts of stuff, but it never gets near the internet – no point in the attack surface and in g... | 1,760,374,294.486706 | ||
https://hackaday.com/2018/07/14/3d-printed-variable-area-jet-nozzle/ | 3D Printed Variable Area Jet Nozzle | Tom Nardi | [
"3d Printer hacks"
] | [
"EDF",
"jet engine",
"Nozzle",
"parametric design",
"scale model"
] | If you’ve ever seen the back end of a military jet, you’ve likely seen variable area nozzles. They’re used to adjust the exhaust flow out of the rear of a jet engine during supersonic flight and while the afterburner is engaged. Commercial aircraft, with the exception of the Concorde, don’t need such fancy hardware sin... | 8 | 6 | [
{
"comment_id": "4747011",
"author": "Serge",
"timestamp": "2018-07-14T23:40:54",
"content": "“[Marco] says they expect performance to be worse with the nozzle fitted”.I think they may be surprised by the result. The flow restriction is rather small, and the small increase in back pressure on the du... | 1,760,374,294.684048 | ||
https://hackaday.com/2018/07/14/charging-usb-c-devices-off-of-lipo-battery-packs/ | Charging USB-C Devices Off Of LiPo Battery Packs | Brian Benchoff | [
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"lipo",
"USB C",
"XT-30"
] | When it was introduced in the late 90s, USB was the greatest achievement in all of computing. Gone were the PS/2 connectors for keyboards and mice, ADB ports, parallel ports, game ports, and serial ports. This was a Tower of Babel that would unite all ports under one standard
universal
bus.
Then more ports were introdu... | 22 | 14 | [
{
"comment_id": "4746243",
"author": "shades66",
"timestamp": "2018-07-14T20:17:28",
"content": "Is it just me or is the title the wrong way around? The article talks about charging lipo’s from USB-C not charging USB-C devices using a lipo ?",
"parent_id": null,
"depth": 1,
"replies": [... | 1,760,374,294.743287 | ||
https://hackaday.com/2018/07/21/hacking-a-very-special-486/ | Hacking A Very Special 486 | Jenny List | [
"classic hacks"
] | [
"486",
"486DX4",
"HP",
"HP internet advisor"
] | It’s fair to say that Moore’s Law is not delivering on its promise of advancing semiconductor capabilities as fast as it used to, as the limits of current fabrication techniques are being met. Where this is being written for example there are two laptops, one from the last year and one that is 11 years old, and while t... | 23 | 10 | [
{
"comment_id": "4766576",
"author": "Ostracus",
"timestamp": "2018-07-21T17:12:03",
"content": "Waiting for gaming on a CNC machine.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4766649",
"author": "scott t",
"timestamp": "2018-07-21T18:09... | 1,760,374,294.593246 | ||
https://hackaday.com/2018/07/21/hope-xiii-oh-the-fun-youll-have-with-a-bit-of-social-engineering/ | HOPE XIII: Oh The Fun You’ll Have With A Bit Of Social Engineering | Mike Szczys | [
"cons"
] | [
"Alexander J. Urbelis",
"Cheshire Catalyst",
"Emmanuel Goldstein",
"Flyko",
"HOPE XII",
"social engineering"
] | I’ve been aware of the Social Engineering panels, talks, and villages at many conferences over the past few years. For some reason, be it the line to get in or conflicting schedules, I haven’t made it to one. Today was my day and I had a blast. The
Social Engineering Panel at HOPE XIII
is a great introduction to the da... | 9 | 4 | [
{
"comment_id": "4766332",
"author": "Tomo",
"timestamp": "2018-07-21T14:10:43",
"content": "The guy with the beard looks like Methuselah.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4766426",
"author": "Jan",
"timestamp": "2018-07-21T15:2... | 1,760,374,294.295871 | ||
https://hackaday.com/2018/07/21/measuring-web-latency-in-the-browser/ | Measuring Web Latency In The Browser | Tom Nardi | [
"computer hacks",
"Network Hacks",
"Software Hacks"
] | [
"diagnostics",
"HTTP",
"icmp",
"networking",
"ping"
] | We’ll go out on a limb and assume that anyone reading these words is probably familiar with the classic
ping
command. Depending on which operating system you worship the options might be slightly different, but every variation of this simple tool does the same thing: send an ICMP echo request and wait for a response. H... | 8 | 6 | [
{
"comment_id": "4766181",
"author": "Michael Mather",
"timestamp": "2018-07-21T12:14:31",
"content": "This (like ping itself) provides a cool way to estimate a lower bound to the speed of light in glass fibre.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "47... | 1,760,374,294.53503 | ||
https://hackaday.com/2018/07/21/digital-attenuator-goes-from-manual-to-arduino-control/ | Digital Attenuator Goes From Manual To Arduino Control | Dan Maloney | [
"Radio Hacks"
] | [
"arduino",
"attenuator",
"GaAs",
"gallium arsenide",
"HMC624LP4E",
"microwave",
"MMIC",
"parallel",
"RF",
"spi"
] | [Kerry Wong] comes across the coolest hardware, and always manages to do something interesting with it. His widget du jour is an old demo board for a digital RF attenuator chip, which can pad a signal in discrete steps according to the settings of some DIP switches. [Kerry]’s goal:
forget the finger switch-flipping and... | 6 | 3 | [
{
"comment_id": "4766205",
"author": "mxb",
"timestamp": "2018-07-21T12:25:49",
"content": "You can buy these as modules from the usual Chinese suppliers – just needing some power and signal control.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4766501",
... | 1,760,374,294.336676 | ||
https://hackaday.com/2018/07/20/open-source-laboratory-rocker-is-super-smooth/ | Open Source Laboratory Rocker Is Super Smooth | Donald Papp | [
"Arduino Hacks",
"Tool Hacks"
] | [
"arudino",
"diy",
"lab",
"lab equipment",
"laboratory",
"NEMA17",
"rocker",
"science",
"skate bearing",
"stepper motor"
] | Lab equipment is often expensive, but budgets can be tight and not always up to getting small labs or researchers what they need. That’s why [akshay_d21] designed an
Open Source Lab Rocker
with a modular tray that uses commonly available hardware and 3D printed parts. The device generates precisely controlled, smooth m... | 19 | 8 | [
{
"comment_id": "4765709",
"author": "Leithoa",
"timestamp": "2018-07-21T05:23:40",
"content": "Wonder why they went with a rocker rather than a shaker.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4765840",
"author": "Shoe",
"timestamp": "... | 1,760,374,294.979711 | ||
https://hackaday.com/2018/07/20/bananas-against-racism/ | Bananas Against Racism | Brian McEvoy | [
"classic hacks",
"Robots Hacks"
] | [
"ban",
"banana",
"banned account",
"filter",
"puns",
"security",
"twitch"
] | This is a tale as old as time. Not love, it is about keeping something you made safe from those who would destroy something beautiful. In this case, the thing of beauty is a
talking banana
who reads Twitch and Youtube comments. The ne’er-do-wells are trolls seeking to ban-anana the account by forcing it to recite restr... | 42 | 13 | [
{
"comment_id": "4765525",
"author": "RÖB",
"timestamp": "2018-07-21T02:39:10",
"content": "Well that banana story was a little bent and was quite curly at the end.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4765528",
"author": "Brian McEvoy",
... | 1,760,374,295.345807 | ||
https://hackaday.com/2018/07/20/failed-3d-print-saved-with-manual-coding/ | Failed 3D Print Saved With Manual Coding | Al Williams | [
"3d Printer hacks"
] | [
"3d printing",
"gcode"
] | Toast falls face down. Your car always breaks after the warranty period. A 3D print only fails after it is has been printing for 12 hours. Those things might not always be true, but they are true often enough. Another pessimistic adage is “no good deed goes unpunished.” [Shippey123] did a good deed. He agreed to make a... | 20 | 9 | [
{
"comment_id": "4765149",
"author": "Mr Name Required",
"timestamp": "2018-07-20T23:11:41",
"content": "A very interesting article, thanks for firstly showing it can be done, and secondly a simple and clear description on how to do it. Good work Shippey123, I’ll definately bookmark this page for th... | 1,760,374,295.664178 | ||
https://hackaday.com/2018/07/16/global-radio-direction-finding-in-your-browser/ | Global Radio Direction Finding In Your Browser | Tom Nardi | [
"internet hacks",
"Radio Hacks"
] | [
"KiwiSDR",
"radio direction finding",
"sdr",
"triangulation"
] | Radio direction finding is one of those things that most Hackaday readers are likely to be familiar with at least on a conceptual level, but probably without much first-hand experience. After all it’s not everyday that you need to track down a rogue signal, let alone have access to the infrastructure necessary to trian... | 16 | 8 | [
{
"comment_id": "4752664",
"author": "Doc",
"timestamp": "2018-07-16T23:40:09",
"content": "Dandy for SDR, but RDF is already incorporated in “Speclab” software by just connecting two receivers to sound input. Speclab is awesome!",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,374,295.717931 | ||
https://hackaday.com/2018/07/16/replace-old-electrolytics-not-so-fast-maybe/ | Replace Old Electrolytics? Not So Fast… Maybe | Al Williams | [
"Repair Hacks"
] | [
"capacitor",
"electrolytic capacitor",
"repair",
"vintage"
] | [CuriousMarc] was restoring an old Model 19 TeleType. The design for these dates back to the 1930s, and they are built like tanks (well, except for the ones built during the war with parts using cheaper metals like zinc). Along the way, he restored a hefty tube-based power supply that had two very large electrolytic ca... | 52 | 12 | [
{
"comment_id": "4752486",
"author": "flyinglotus1983",
"timestamp": "2018-07-16T20:55:32",
"content": "If I’m taking the engine out of my car at 90,000 miles and the clutch isn’t quite worn out yet, I’m still replacing the damn clutch because it’s easier to do it at that point than at some later da... | 1,760,374,295.489667 | ||
https://hackaday.com/2018/07/16/3d-printer-guardian-watches-for-worst-case-failures/ | 3D Printer Guardian Watches For Worst-case Failures | Donald Papp | [
"3d Printer hacks",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"3d printer",
"3d printer watchdog",
"fire",
"monitor",
"safety",
"temperature monitoring",
"thermal runaway",
"watchdog"
] | Some devices have one job to do, but that job can have many facets. To [jmcservv], an example of this is the job of protecting against worst-case failures in a 3D printer, and it led him to develop the
3D Printer Watchdog Guardian
. When it comes to fire, secondary protection is the name of the game because it’s one th... | 17 | 6 | [
{
"comment_id": "4752267",
"author": "jaegi",
"timestamp": "2018-07-16T18:37:28",
"content": "Yeah, 3D printers. No other hardware has so many safety problems. I can buy $10 soldering iron or or $60 inverter TIG/stick welder and they will work flawlessly for 10-15 years, won’t electrocute me or burn... | 1,760,374,295.547004 | ||
https://hackaday.com/2018/07/16/review-smd-tweezer-meter-or-tweezer-probes-for-your-multimeter/ | Review: SMD Tweezer Meter Or Tweezer Probes For Your Multimeter? | Jenny List | [
"Hackaday Columns",
"Reviews",
"Tool Hacks"
] | [
"smd",
"smd meter",
"smd tweezers",
"test equipment"
] | It’s remarkable how tiny electronics have become. Heaven knows what an old-timer whose experience started with tubes must think, to go from solder tags to SMD in a lifetime is some journey. Even the generation that started with discrete transistors has lived through an incredible shift. But it’s true, SMD components
a... | 22 | 8 | [
{
"comment_id": "4752095",
"author": "frustrated hacker",
"timestamp": "2018-07-16T17:22:38",
"content": "“Heaven knows what an old-timer whose experience started with tubes must think”I’m not sure that heaven knows much of anything but in my experience if you want (or don’t want) to know what those... | 1,760,374,295.981244 | ||
https://hackaday.com/2018/07/16/human-computer-interface-challenge-change-how-we-interact-with-computers-win-prizes/ | Human-Computer Interface Challenge: Change How We Interact With Computers, Win Prizes | Mike Szczys | [
"contests",
"Hackaday Columns",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"hci",
"human computer interaction",
"Human Computer Interface",
"Human Computer Interface Challenge"
] | Pay no attention to the man behind the curtain. It’s a quote from the
Wizard of Oz
but also an interesting way to look at our interactions with electronics. The most natural interactions free us from thinking about the ones and zeros behind them. Your next challenge is to build an innovative interface for humans to tal... | 19 | 6 | [
{
"comment_id": "4751983",
"author": "Jon h",
"timestamp": "2018-07-16T16:23:35",
"content": "That picture at the top looks like an arm-breaking machine.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4751994",
"author": "Tegwyn Twmfatt",
"ti... | 1,760,374,295.607172 | ||
https://hackaday.com/2018/07/16/a-microwave-erector-set/ | A Microwave Erector Set | Al Williams | [
"Radio Hacks"
] | [
"microwave",
"microwave prototyping",
"RF Design",
"simulation"
] | RF design isn’t always easy, especially at higher frequencies. Despite improvements in simulation tools, there’s still no substitute for prototyping and trying out different things. That wasn’t so bad when that meant nailing some nails in a piece of wood and wiring up discrete components. But at today’s microwave frequ... | 17 | 6 | [
{
"comment_id": "4751889",
"author": "Ren",
"timestamp": "2018-07-16T15:27:57",
"content": "I’m not an RF guy, that looks cool.What is the second module in the video, the one with the diagonal slashes?I didn’t hear anything while playing the video, does it have sound?Although, I wonder if just build... | 1,760,374,295.405004 | ||
https://hackaday.com/2018/07/16/getting-the-lead-out-of-lithium-battery-recycling/ | Getting The Lead Out Of Lithium Battery Recycling | Dan Maloney | [
"Current Events",
"Featured",
"green hacks",
"Interest",
"Original Art",
"Slider"
] | [
"electrolyte",
"green",
"lead",
"lead-acid",
"lithium",
"lithium ion",
"Pb",
"recycling",
"sulfate"
] | When that fateful morning comes that your car no longer roars to life with a quick twist of the key, but rather groans its displeasure at the sad state of your ride’s electrical system, your course is clear: you need a new battery. Whether you do it yourself or – perish the thought – farm out the job to someone else, t... | 74 | 19 | [
{
"comment_id": "4751762",
"author": "Ostracus",
"timestamp": "2018-07-16T14:06:53",
"content": "Interesting one mentions lead-acid, but how many put their UPS batteries in the same stream car batteries go into?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": ... | 1,760,374,295.917963 | ||
https://hackaday.com/2018/07/12/old-time-traffic-signal-revived-with-a-raspberry-pi-controller/ | Old Time Traffic Signal Revived With A Raspberry Pi Controller | Dan Maloney | [
"classic hacks",
"Raspberry Pi"
] | [
"Acme",
"controller",
"Looney Tunes",
"raspberry pi",
"relay",
"signal",
"traffic light",
"zero crossing"
] | Anyone with even a passing familiarity with the classic animated shorts of the 1940s will recognize the traffic signal in the image above. Yes, such things actually existed in the real world, not just in the Looney world of [Bugs Bunny] et al. As sturdy as such devices were, they don’t last forever, though, which is wh... | 28 | 7 | [
{
"comment_id": "4740545",
"author": "foxpup",
"timestamp": "2018-07-13T05:09:02",
"content": "Way cool restoration project. For a minute there, I thought the re-builder wanted to set up an old traffic light for inside his own home, sort of Mister Roger’s Neighborhood style, but museums are better ... | 1,760,374,296.040341 | ||
https://hackaday.com/2018/07/12/fail-of-the-week-careful-case-mod-is-all-for-naught/ | Fail Of The Week: Careful Case Mod Is All For Naught | Tom Nardi | [
"computer hacks",
"Fail of the Week"
] | [
"body filler",
"casemod",
"external hard drive",
"fail"
] | Today’s entry comes to us from [Robert Tomsons], who was kind enough to document this crushing tale of woe so that we might all learn what true heartbreak is. If you’ve ever toiled away at getting that
perfect
surface finish with body filler, this one is going to hurt. In fact, you might just want to hit that “Back” bu... | 20 | 11 | [
{
"comment_id": "4740152",
"author": "Dusk357",
"timestamp": "2018-07-13T02:22:07",
"content": "The fact it was ‘only’ that broken speaks highly of his restraint.Guy for which I made an Athlon XP/GeForce3 pc (don’t laugh, it was 2001) got so ticked off at his exceedingly lackluster Hidden and Dangeo... | 1,760,374,296.338488 | ||
https://hackaday.com/2018/07/12/teardown-of-sonos-and-amazon-smart-speakers-reveals-interesting-engineering-details/ | Teardown Of Sonos And Amazon Smart Speakers Reveals Interesting Engineering Details | Richard Baguley | [
"Teardown"
] | [
"Amazon Echo",
"sonos",
"teardown"
] | Taking things apart is always fun, and this
What Cracking Open a Sonos One Tells Us About the Sonos IPO”>excellent writeup of a teardown of a Sonos and Amazon smart speaker
by [Ben Einstein] shows what you can learn. [Ben] is a Venture Capitalist and engineer, so much of his write up focuses on what the devices say abo... | 24 | 10 | [
{
"comment_id": "4738921",
"author": "Perry",
"timestamp": "2018-07-12T23:44:52",
"content": "I thought this article was about more then just speakers.OK thanks though. I read it anyway.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6209468",
"autho... | 1,760,374,296.450626 | ||
https://hackaday.com/2018/07/12/hacked-lcd-shutter-glasses-see-the-light/ | Hacked LCD Shutter Glasses See The Light | Tom Nardi | [
"home entertainment hacks",
"Wearable Hacks"
] | [
"3D TV",
"lcd",
"polarization",
"shutter glasses"
] | It’s always a little sad to see a big consumer technology fail. But of course, the upside for us hacker types is that the resulting fire sale is often an excellent source for hardware that might otherwise be difficult to come by. The most recent arrival to the Island of Unwanted Consumer Tech is 3D TV. There was a brie... | 14 | 5 | [
{
"comment_id": "4738576",
"author": "neotechni",
"timestamp": "2018-07-12T20:36:54",
"content": "Hey, I love my 3DTV.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4738595",
"author": "KI7PXF",
"timestamp": "2018-07-12T20:51:17",
"c... | 1,760,374,296.390082 | ||
https://hackaday.com/2018/07/12/air-quality-readings-at-a-glance/ | Air Quality Readings At A Glance | Lewin Day | [
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"pollution",
"smog"
] | Since the industrial age, air pollution has increasingly become a problem on society’s radar. Outside of concerns about global warming and greenhouse gases, particulate emissions can be highly hazardous to human health. Over time, various organizations have set up measuring systems to check and report the particulate p... | 6 | 5 | [
{
"comment_id": "4738463",
"author": "Ostracus",
"timestamp": "2018-07-12T19:24:04",
"content": "“Since the industrial age, air pollution has increasingly become a problem on society’s radar. ”Blue Hazehttps://onlinelibrary.wiley.com/pb-assets/assets/15213773/press/200121press.pdf",
"parent_id":... | 1,760,374,296.275114 | ||
https://hackaday.com/2018/07/12/the-bad-old-days-of-telephone-answering-machines/ | The Bad Old Days Of Telephone Answering Machines | Al Williams | [
"Hackaday Columns",
"History",
"Original Art",
"Phone Hacks"
] | [
"answering machine",
"telephone answering machine"
] | Telephone answering machines were almost a fad. They were hindered for years by
not being allowed to connect to the phone lines
. Then a mix of cell phones and the phone company offering voicemail made the machines all but obsolete. Unless you are really young, you probably had one at some point though. Some had digita... | 55 | 19 | [
{
"comment_id": "4738192",
"author": "Ostracus",
"timestamp": "2018-07-12T17:04:25",
"content": "“You can only wonder what is going to seem quaint or antiquated in another 40 years.”Cellphones will be replaced by implanted AR.",
"parent_id": null,
"depth": 1,
"replies": [
{
... | 1,760,374,296.592359 | ||
https://hackaday.com/2018/07/12/dual-sensor-echo-locator-gives-high-accuracy-at-low-cost/ | Dual Sensor Echo Locator Gives High Accuracy At Low Cost | Kristina Panos | [
"Arduino Hacks"
] | [
"Arduino Uno",
"echolocation",
"HC-SR04",
"HY-SRF05",
"ultrasonic",
"ultrasonic distance sensor",
"ultrasonic transducer"
] | Infrared certainly has its uses, but if you’re trying to locate objects, ultrasonic detection is far superior. It’s contact-less, undetectable to the human ear, and it isn’t affected by smoke, dust, ambient light, or Silly String.
If you have one ultrasonic sensor and a microcontroller, you can detect plenty of useful ... | 19 | 6 | [
{
"comment_id": "4738110",
"author": "TheRegnirps.",
"timestamp": "2018-07-12T16:19:26",
"content": "Do you really need trig? The object is on the intersection of two arcs. It sounds like a compass and straight edge problem, which makes it Euclidean Geometry.",
"parent_id": null,
"depth": 1,... | 1,760,374,296.648628 | ||
https://hackaday.com/2018/07/14/blinging-buttons-for-pick-and-place/ | Blinging Buttons For Pick And Place | Dan Maloney | [
"LED Hacks"
] | [
"control panel",
"indicator",
"led",
"neopixel",
"pilot",
"rgb",
"switch"
] | With 3D-printing, cheap CNC machines, and the huge variety of hardware available these days, really slick-looking control panels are getting to be commonplace. We’re especially fond of those nice indicators with the chrome bezels, and the matching pushbuttons with LED backlighting; those can really make a statement on ... | 7 | 3 | [
{
"comment_id": "4745808",
"author": "Ostracus",
"timestamp": "2018-07-14T17:24:53",
"content": "“With 3D-printing, cheap CNC machines, and the huge variety of hardware available these days, really slick-looking control panels are getting to be commonplace. We’re especially fond of those nice indica... | 1,760,374,296.496599 | ||
https://hackaday.com/2018/07/14/casting-a-3d-printed-extruder-body-in-aluminum/ | Casting A 3D Printed Extruder Body In Aluminum | Al Williams | [
"3d Printer hacks"
] | [
"aluminum casting",
"casting",
"lost PLA",
"lost pla casting"
] | Creating 3D prints is great, but sometimes you need something more durable. [Myfordboy] printed a new 3D printer extruder in PLA and then used the lost PLA method to cast it in aluminum. You can
see the results
in the video below.
The same process has been used for many years with wax instead of PLA. The idea is to pro... | 33 | 12 | [
{
"comment_id": "4745405",
"author": "arcol",
"timestamp": "2018-07-14T14:26:56",
"content": "wow, impressive",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4745441",
"author": "Harvie.CZ",
"timestamp": "2018-07-14T14:45:06",
"content": "Why not 3D... | 1,760,374,296.718092 | ||
https://hackaday.com/2018/07/14/a-tale-of-more-than-one-amiga-1500/ | A Tale Of More Than One Amiga 1500 | Jenny List | [
"classic hacks",
"Retrocomputing"
] | [
"amiga",
"amiga 1500",
"retro computer",
"retro computing"
] | If you were an Amiga enthusiast back in the day, the chances are you had an Amiga 500, and lusted after a 2000 or maybe later a 3000. Later still perhaps you had a 600 or a 1200, and your object of desire became the 4000. The amusingly inept Commodore marketing department repackaged what was essentially the same 68000-... | 32 | 12 | [
{
"comment_id": "4744847",
"author": "YO9GJX",
"timestamp": "2018-07-14T11:21:36",
"content": "Amiga is still runninghttp://www.amigaos.net/",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4745166",
"author": "Jerry",
"timestamp": "2018-07-14T13:01:47",... | 1,760,374,296.847297 | ||
https://hackaday.com/2018/07/14/bandpass-filters-from-the-cnc-mill/ | Bandpass Filters From The CNC Mill | Brian McEvoy | [
"Radio Hacks"
] | [
"antenna",
"circuit board",
"cnc",
"distributed element filter",
"hairpin filter",
"microstrip filter",
"milling",
"pcb",
"pcb antenna",
"radio"
] | A bandpass allows a certain electrical signal to pass while filtering out undesirable frequencies. In a speaker bandpass, the mid-range speaker doesn’t receive tones meant for the tweeter or woofer. Most of the time, this filtering is done with capacitors to remove low frequencies and inductors to remove high frequenci... | 30 | 5 | [
{
"comment_id": "4744807",
"author": "BrightBlueJim",
"timestamp": "2018-07-14T11:04:16",
"content": "Microstrips scare me. They just remind me how easy it is to accidentally build a filter when all you meant to build was a connection between two points.",
"parent_id": null,
"depth": 1,
... | 1,760,374,296.780973 | ||
https://hackaday.com/2018/07/13/explore-low-energy-bluetooth-by-gaming/ | Explore Low-Energy Bluetooth By Gaming | Bryan Cockfield | [
"Games"
] | [
"arm",
"bluetooth",
"BTLE",
"CC2640R2F",
"controller",
"launchpad",
"low energy",
"ti",
"video game"
] | For several years now, a more energy-efficient version of Bluetooth has been available for use in certain wireless applications, although it hasn’t always been straightforward to use. Luckily now there’s a development platform for Bluetooth Low Energy (BLE) from Texas Instruments that makes using this protocol much eas... | 5 | 2 | [
{
"comment_id": "4744796",
"author": "Jabberwock",
"timestamp": "2018-07-14T10:58:03",
"content": "ESP32 BT library now supports HID, so you can emulate gamepads/keyboards. And ESP32 has ten touch-sensitive pins, so to make a gamepad you just need some wire and cardboard.",
"parent_id": null,
... | 1,760,374,297.53441 | ||
https://hackaday.com/2018/07/13/quantum-computing-for-computer-scientists/ | Quantum Computing For Computer Scientists | Al Williams | [
"Software Development",
"Software Hacks"
] | [
"quantum",
"quantum computing",
"qubit",
"qubits"
] | Quantum computing is coming, so a lot of people are trying to articulate why we want it and how it works. Most of the explanations are either hardcore physics talking about spin and entanglement, or very breezy and handwaving which can be useful to get a little understanding but isn’t useful for applying the technology... | 16 | 10 | [
{
"comment_id": "4743901",
"author": "noouch",
"timestamp": "2018-07-14T02:36:11",
"content": "Where’s Feynman when you need him?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "6481226",
"author": "tbdnonymous",
"timestamp": "2022-06-06T02:41... | 1,760,374,297.750345 | ||
https://hackaday.com/2018/07/13/custom-circuit-makes-for-better-battery-level-display/ | Custom Circuit Makes For Better Battery Level Display | Dan Maloney | [
"LED Hacks",
"Misc Hacks"
] | [
"bargraph",
"battery",
"battery gauge",
"battery meter",
"comparator",
"lm324",
"lm3914",
"voltage"
] | Isn’t it always the way? There’s a circuit right out of the textbooks, or even a chip designed to do exactly what you want — almost exactly. It’s 80% perfect for your application, and rather than accept that 20%, you decide to start from scratch and design your own solution.
That’s the position [Great Scott!] found him... | 10 | 5 | [
{
"comment_id": "4743614",
"author": "macona",
"timestamp": "2018-07-13T23:58:21",
"content": "Hmm, there a lot of dedicated battery fuel gauge ICs out there that will probably be a lot more accurate than this since they track battery usage and performance.",
"parent_id": null,
"depth": 1,
... | 1,760,374,297.330572 | ||
https://hackaday.com/2018/07/13/mademoiselle-pinball-table-gets-rock-n-roll-makeover/ | Mademoiselle Pinball Table Gets Rock ‘n Roll Makeover | Kristina Panos | [
"Arduino Hacks",
"Microcontrollers",
"Repair Hacks"
] | [
"arduino",
"darlington array",
"Gottlieb",
"Neopixels",
"pinball",
"Teensy"
] | Once upon a time, there was a music venue/artist collective/effects pedal company that helped redefine industry in Williamsburg, Brooklyn. That place was called Death By Audio. In 2014, it suffered a death by gentrification when Vice Media bought the building that DBA had worked so hard to transform. From the ashes ros... | 11 | 8 | [
{
"comment_id": "4743374",
"author": "Pinhead",
"timestamp": "2018-07-13T21:23:15",
"content": "Like that !Even if I think that old original playfields should be preserved rather than being re-themed",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4743397",
... | 1,760,374,297.381845 | ||
https://hackaday.com/2018/07/13/this-is-your-last-chance-to-design-the-greatest-in-power-harvesting/ | This Is Your Last Chance To Design The Greatest In Power Harvesting | Brian Benchoff | [
"Hackaday Columns",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"Power Harvesting Challenge"
] | This is your last weekend to get your project together for the
Power Harvesting Challenge
in this year’s Hackaday Prize. We’re looking for projects that harvest energy from the ether, and power electronics from solar, thermal, wind, light, or random electromagnetic fluctuations. Is it going to save the world? Maybe, bu... | 17 | 7 | [
{
"comment_id": "4743069",
"author": "Ostracus",
"timestamp": "2018-07-13T18:51:13",
"content": "“This is your last weekend to get your project together for the Power Harvesting Challenge in this year’s Hackaday Prize. We’re looking for projects that harvest energy from the ether, and power electron... | 1,760,374,297.586452 | ||
https://hackaday.com/2018/07/13/errf-18-new-products-make-their-debut/ | ERRF 18: New Products Make Their Debut | Tom Nardi | [
"3d Printer hacks",
"cons",
"hardware"
] | [
"Buildini",
"ERRF",
"ERRF 18",
"printrbot",
"Proto-Pasta",
"Venturi"
] | While ostensibly the purpose of the
recent East Coast RepRap Festival (ERRF)
was to celebrate the 3D printing community and culture, it should come as no surprise that more than a few companies decided to use the event as an opportunity to publicly launch new products. Who can blame them? It’s not as if every day you h... | 6 | 3 | [
{
"comment_id": "4743170",
"author": "Robert Mateja",
"timestamp": "2018-07-13T19:32:10",
"content": "Does $2,300 printer with 3 alu extrusions also comes with 10 pounds/kg gold flakes filament?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4743208",
... | 1,760,374,297.633535 | ||
https://hackaday.com/2018/07/13/supersize-diy-r-c-servos-from-windscreen-wipers/ | Supersize DIY R/C Servos From Windscreen Wipers | Ben James | [
"3d Printer hacks",
"Arduino Hacks",
"Microcontrollers"
] | [
"3d print",
"arduino",
"conversion",
"dc",
"james bruton",
"pid",
"servo"
] | We’re all familiar with the experience of buying hobby servos. The market is awash with cheap clones which have inflated specs and poor performance. Even branded servos often fail to deliver, and sometimes you just can’t get the required torque or speed from the small form factor of the typical hobby servo.
Enter [Jame... | 26 | 8 | [
{
"comment_id": "4742740",
"author": "Clovis Fritzen",
"timestamp": "2018-07-13T15:46:21",
"content": "Amazing implementation, and on the cheap. Kudos for ya!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4742773",
"author": "Paul Hupman",
"timestamp"... | 1,760,374,297.696157 | ||
https://hackaday.com/2018/07/13/behind-the-pin-how-the-raspberry-pi-gets-its-audio/ | Behind The Pin: How The Raspberry Pi Gets Its Audio | Jenny List | [
"Featured",
"Raspberry Pi",
"Slider"
] | [
"audio",
"behind the pin",
"pwm",
"Raspbery PI"
] | Single board computers have provided us with a revolution in the way we approach computing as hardware creators. We have grown accustomed to a world in which an entire microcomputer has become a component in its own right rather than a complex system, and we interface to them as amorphous entities through their exposed... | 54 | 18 | [
{
"comment_id": "4742538",
"author": "Lou",
"timestamp": "2018-07-13T14:21:15",
"content": "Does anyone know (or have a o-scope screenshot) of the “PWM” out is truly a PWM signal or a (much better) PRN (noise) modulation signal?Not complaining, but I am surprised at how shitty the audio quality is... | 1,760,374,297.886854 | ||
https://hackaday.com/2018/07/13/replace-your-calipers-with-a-microscope-and-image-analysis/ | Replace Your Calipers With A Microscope And Image Analysis | Dan Maloney | [
"cnc hacks",
"Misc Hacks"
] | [
"cnc",
"depth of field",
"focal plane",
"image analysis",
"Laplace Transform",
"measurement",
"microscope",
"opencv"
] | Getting a good measurement is a matter of using the right tool for the job. A tape measure and a caliper are both useful tools, but they’re hardly interchangeable for every task. Some jobs call for a hands-off, indirect way to measure small distances, which is where
this image analysis measuring technique
can come in h... | 19 | 7 | [
{
"comment_id": "4742050",
"author": "vactor20",
"timestamp": "2018-07-13T11:16:27",
"content": "Anyone knows the model of that CNC? seems to be pretty robust.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4742239",
"author": "Robert Mateja",
... | 1,760,374,298.334147 | ||
https://hackaday.com/2018/07/13/give-the-clapper-a-hand/ | Give The Clapper A Hand | Bryan Cockfield | [
"home hacks"
] | [
"actuator",
"automation",
"clapper",
"home",
"light",
"mechanical",
"microphone",
"outlet",
"plug",
"switch"
] | While “The Clapper” probably first conjures images of low-budget commercials, it was still a useful way to remotely switch lights and other things around the house. But if the lights you want to switch weren’t plugged into the wall, like a ceiling fan, for example, The Clapper was not going to help you. To add some fun... | 8 | 4 | [
{
"comment_id": "4741061",
"author": "Darren",
"timestamp": "2018-07-13T08:46:30",
"content": "Well no, not here, The Clapper immediately conjures up the phrases ‘going like the clappers’ meaning going fast. Or possibly a venereal disease. The Clapper light switch is something uniquely American.",
... | 1,760,374,297.792049 | ||
https://hackaday.com/2018/07/12/its-all-in-the-libs-building-a-plugin-system-using-dynamic-loading/ | It’s All In The Libs – Building A Plugin System Using Dynamic Loading | Sven Gregori | [
"Hackaday Columns",
"how-to",
"Software Development"
] | [
"C language",
"c programming",
"c/c++",
"dynamic loader",
"gcc",
"programming language",
"software library"
] | Shared libraries are our best friends to extend the functionality of C programs without reinventing the wheel. They offer a collection of exported functions, variables, and other symbols that we can use inside our own program as if the content of the shared library was a direct part of our code. The usual way to use su... | 17 | 11 | [
{
"comment_id": "4737868",
"author": "Lee",
"timestamp": "2018-07-12T14:29:07",
"content": "Huh. Thought arbitrary code execution was a CWE, not a feature.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4737876",
"author": "circuitpeople",
"timestamp"... | 1,760,374,297.994034 | ||
https://hackaday.com/2018/07/12/you-can-now-buy-a-practical-gauss-gun/ | You Can Now Buy A Practical Gauss Gun | Tom Nardi | [
"Weapons Hacks"
] | [
"capacitor",
"coil gun",
"electromagnetic",
"gauss gun"
] | Occasionally we come across a piece of information which reminds us that, while flying cars are still nowhere to be found, we’re definitely living in the future. Usually it’s about some new application of artificial intelligence, or maybe another success in the rapidly developing field of private spaceflight. But somet... | 65 | 18 | [
{
"comment_id": "4737552",
"author": "Johannes",
"timestamp": "2018-07-12T12:03:09",
"content": "Muzzle velocity 45 m/sMuzzle energy 4.65JEfficiency 6.5%Any air gun will do more.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4737604",
"author... | 1,760,374,298.548007 | ||
https://hackaday.com/2018/07/12/old-laptop-reborn-as-mobile-x86-game-system/ | Old Laptop? Mobile X86 Game System! | Tom Nardi | [
"computer hacks",
"Games",
"Tablet Hacks"
] | [
"atom",
"gaming",
"laptop",
"lirc",
"RTL-SDR",
"tablet"
] | Between smartphones and tablets, computing is becoming increasingly mobile in nature. It used to be that everyone had a desktop computer, then laptops became the norm, and now many people don’t have anything beyond their mobile device. Unless you’re the kind of person who actually
needs
the power and versatility offere... | 5 | 5 | [
{
"comment_id": "4737459",
"author": "mb",
"timestamp": "2018-07-12T11:27:57",
"content": "Neat. It reminds me of the Samsung UMPC…Google says the Samsung Q1.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4737723",
"author": "Ren",
"timestamp": "2018-... | 1,760,374,298.37918 | ||
https://hackaday.com/2018/07/11/shoehorning-a-slick-spotify-remote-into-an-esp8266/ | Shoehorning A Slick Spotify Remote Into An ESP8266 | Kerry Scharfglass | [
"hardware",
"home hacks",
"internet hacks"
] | [
"ESP8266",
"graphic lcd",
"oauth2",
"spotify"
] | In 2017 Spotify finally deprecated their public vanilla C SDK library, libspotify, and officially replaced it with dedicated SDKs for iOS and Android and this new-fangled web thing we’ve all heard so much about. This is probably great for their maintainability but makes writing a native application for a Linux or a ha... | 9 | 7 | [
{
"comment_id": "4736659",
"author": "fmholz",
"timestamp": "2018-07-12T06:09:48",
"content": "does something simular exsist for gmusic?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4737106",
"author": "ThingPulse (@thingpulse)",
"timestamp... | 1,760,374,298.279146 | ||
https://hackaday.com/2018/07/11/diode-recovery-time-explained/ | Diode Recovery Time Explained | Al Williams | [
"hardware"
] | [
"diode",
"recovery time",
"reverse recovery time"
] | There are at least two phases to learning about electronics. In the first phase, you learn about how components are supposed to work. In the second phase, you learn about how they
really
work. Wires have resistance and inductance. Adjacent wires have capacitance. Capacitors leak. Inductors have resistance. All of these... | 19 | 7 | [
{
"comment_id": "4736313",
"author": "Ostracus",
"timestamp": "2018-07-12T04:26:30",
"content": "“There are at least two phases to learning about electronics. In the first phase, you learn about how components are supposed to work. In the second phase, you learn about how they really work.”Third pha... | 1,760,374,298.602101 | ||
https://hackaday.com/2018/07/11/a-graph-plotting-metal-detector/ | A Graph Plotting Metal Detector | Lewin Day | [
"classic hacks"
] | [
"aerduino",
"colpitts oscillator",
"metal detector",
"oscillator"
] | Metal detectors can be a great source of fun, and occasionally even found wealth. They allow the detection of metal objects at a distance, enabling hidden treasures to be discovered. They’re also highly critical to the work of minesweepers and unexploded ordnance disposal teams.
[Andrius] wanted to add such a device to... | 31 | 5 | [
{
"comment_id": "4735525",
"author": "MK 2",
"timestamp": "2018-07-11T23:19:05",
"content": "Add autonomous movement, wifi, a bit of AI and you have a treasure map producing robot.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4735681",
"author": "j... | 1,760,374,298.448413 | ||
https://hackaday.com/2018/07/11/building-a-gasometer-to-store-wood-gas-and-other-bio-fuels/ | Building A Gasometer To Store Wood Gas And Other Bio-Fuels | Steven Dufresne | [
"chemistry hacks"
] | [
"gas",
"gasometer",
"wood gas"
] | Old solutions are often so elegant and effective that they keep coming back. The gasometer, or gas holder, is one such example. Now [NightHawkInLight]
has built one for storing the wood gas he’s been experimenting with
, and it’s pretty neat to watch it rise and fall as he first adds gas and then burns it off. The mech... | 32 | 13 | [
{
"comment_id": "4735090",
"author": "Steve Spence - KK4HFJ",
"timestamp": "2018-07-11T20:21:24",
"content": "This is how we store the gas from our bio-methane digester.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4735103",
"author": "Luke",
"timest... | 1,760,374,298.751403 | ||
https://hackaday.com/2018/07/11/robotic-muscles-from-fishing-line-and-nichrome/ | Robotic Muscles From Fishing Line And Nichrome | Donald Papp | [
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"artificial muscle",
"muscle wire",
"nichrome",
"NLMA",
"Nylon Linear Material Actuator",
"nylon muscle",
"robotics"
] | Did you know that under the right conditions, nylon can be used as a type of artificial muscle? We certainly didn’t until we came across [Brandon T. Wood]’s
Material Linear-Actuator for Robotics
entry for the 2018 Hackaday Prize.
When [Brandon] first learned about Nylon Linear Material Actuators (NLMAs), he became dete... | 19 | 9 | [
{
"comment_id": "4734422",
"author": "Not Young Dan",
"timestamp": "2018-07-11T18:55:49",
"content": "“Did you know that under the right conditions, nylon can be used as a type of artificial muscle?”Yup! I seem to remember an article by someone who supposedly “discovered” this effect and a lot of pe... | 1,760,374,298.876906 | ||
https://hackaday.com/2018/07/11/errf-18-slice-engineering-shows-off-the-mosquito/ | ERRF 18: Slice Engineering Shows Off The Mosquito | Tom Nardi | [
"3d Printer hacks",
"cons",
"Hackaday Columns",
"hardware"
] | [
"E3D",
"ERRF",
"ERRF 18",
"heatsink",
"hotend",
"mosquito"
] | With few exceptions, it seemed like every 3D printer at the
first inaugural East Coast RepRap Festival (ERRF)
was using a hotend built by E3D. There’s nothing inherently wrong with that; E3D makes solid open source products, and they deserve all the success they can get. But that being said, competition drives innovati... | 26 | 11 | [
{
"comment_id": "4734008",
"author": "Ostracus",
"timestamp": "2018-07-11T17:09:17",
"content": "Niche product. No opportunity for economics of scale to kick in.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4734151",
"author": "RFP-A",
"tim... | 1,760,374,298.81712 |
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