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https://hackaday.com/2018/04/30/milspec-teardown-ah-64a-apache-data-entry-panel/ | Milspec Teardown: AH-64A Apache Data Entry Panel | Tom Nardi | [
"Engineering",
"Hackaday Columns",
"Retrocomputing",
"Slider",
"Teardown",
"Weapons Hacks"
] | [
"apache",
"helicopter",
"Intel 8085",
"LM123K",
"MD8085AH/B",
"MD8155H/B",
"MD8755A/B",
"Milspec"
] | It’s time once again to see how those tax dollars are spent, this time in the form of a “Data Entry Keyboard” manufactured by Hughes Helicopters. This device was built circa 1986 or so, and was used in the AH-64A Apache. Specifically, this panel would have been located by the gunner’s left knee, and served as a general... | 93 | 32 | [
{
"comment_id": "4515575",
"author": "Olsen",
"timestamp": "2018-04-30T14:12:13",
"content": "Really cool article! Would this thing be capable of CP/M and thus Doom?I want to see a rom dump! I wonder what, if any protections were written into the code to protect it from accidental failure.",
"pa... | 1,760,374,389.692719 | ||
https://hackaday.com/2018/04/30/the-quest-for-the-reuleaux-triangle-bearing/ | The Quest For The Reuleaux Triangle Bearing | Ben James | [
"3d Printer hacks"
] | [
"3d print",
"bearing",
"maker's muse",
"Reuleaux",
"triangle"
] | [Angus Deveson] published a video on “solids of constant width” nearly a year ago. Following the release of the video, he had a deluge of requests asking if he could make a bearing from them. Since then, he’s tried a number of different approaches – none of which have worked.
Until now…
What is a solid of constant widt... | 22 | 17 | [
{
"comment_id": "4515101",
"author": "Truth",
"timestamp": "2018-04-30T11:13:52",
"content": "My very first thought was, that looks like the piston in a Wankel engine.https://en.wikipedia.org/wiki/Wankel_engine#DesignAfter watching the video, it is not, but it is similar.",
"parent_id": null,
... | 1,760,374,389.33565 | ||
https://hackaday.com/2018/04/30/papercraft-inspired-snake-bot-slithers-like-a-real-one/ | Papercraft-Inspired Snake-bot Slithers Like A Real One | Sonya Vasquez | [
"Robots Hacks"
] | [
"snake robot",
"soft robot",
"soft robotics"
] | Blend the Japanese folding technique of Kirigami with an elastomer actuator, and what have you got? A locomoting snake robot that can huff around its own girth with no strings attached! That’s exactly what researchers at the Wyss Institute and Harvard School of Applied Sciences did to build their
Kirigami Crawler
.
Exp... | 9 | 4 | [
{
"comment_id": "4515083",
"author": "Steven13",
"timestamp": "2018-04-30T11:05:39",
"content": "Now they need to make it bidirectional.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4515097",
"author": "Dave Davidson",
"timestamp": "2018-04... | 1,760,374,389.381409 | ||
https://hackaday.com/2018/04/29/hackaday-belgrade-schedule-announced/ | Hackaday Belgrade Schedule Announced | Mike Szczys | [
"cons",
"Hackaday Columns",
"Slider"
] | [
"Hackaday Belgrade",
"Hackaday Belgrade 2018"
] | Hackaday Belgrade preparations have now passed the flash point and the hacker village that is set to descend on Serbia in a few weeks grows larger and more awesome by the day. Prepare for a massive data dump on what is in store. But before you go any further,
make sure you have a ticket
.
What is Hackaday Belgrade and ... | 0 | 0 | [] | 1,760,374,389.732126 | ||
https://hackaday.com/2018/04/29/hard-drive-gives-its-life-to-cool-3d-prints/ | Hard Drive Gives Its Life To Cool 3D Prints | Mike Szczys | [
"3d Printer hacks"
] | [
"BLDC",
"cooling fan",
"Ducted Fan",
"esc",
"fan",
"impeller"
] | [Mark Rehorst] has been on the hunt for the perfect 3D printer cooling fan and his latest take is a really interesting design. He’s printed an impeller and housing,
completing the fan using a hard drive motor
to make it spin.
We should take a step back to see where this all began. Many 3D printers us a cooling fan righ... | 28 | 8 | [
{
"comment_id": "4514052",
"author": "Denys Fedoryshchenko",
"timestamp": "2018-04-30T02:05:15",
"content": "Putting hand near this… quite risky idea, as running it with open case.You can’t imagine how deadly is PLA shrapnel, if it go apart on high RPM. (I ran it in enclosure, and that’s what saved ... | 1,760,374,389.546807 | ||
https://hackaday.com/2018/04/29/hackaday-links-april-29-2018/ | Hackaday Links: April 29, 2018 | Brian Benchoff | [
"Hackaday Columns",
"Hackaday links"
] | [
"choking the chicken",
"Don't buy alexa",
"North Korea",
"Open Hardware Association",
"OSHWA",
"supercapacitors"
] | Amazon has released the Echo Dot Kids Edition, an always-on, Internet-connected microphone. According to Amazon’s Children’s Privacy Disclosure, the Amazon Echo Dot Kids Edition collects data such as, ‘name, birthdate, contact information (including phone numbers and email addresses), voice, photos, videos, location, a... | 12 | 5 | [
{
"comment_id": "4513789",
"author": "bty",
"timestamp": "2018-04-29T23:04:18",
"content": "those NK hits are likely bots scanning for WP vulnerabilities ..",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4513827",
"author": "Ren",
"timestamp"... | 1,760,374,389.479125 | ||
https://hackaday.com/2018/04/29/towards-more-automated-printers/ | Towards More Automated Printers | Brian Benchoff | [
"3d Printer hacks",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"conveyor belt",
"conveyor belt printer",
"infinite build volume printer",
"makerbot"
] | 3D printers can be used in a manufacturing context. This might be surprising for anyone who has waited hours for their low-poly Pokemon print, but for low-volume plastic parts, you can actually run a manufacturing line off a few 3D printers. The problem with 3D printers is peeling the print off when it’s finished. If o... | 17 | 9 | [
{
"comment_id": "4513489",
"author": "spiritplumber",
"timestamp": "2018-04-29T20:18:21",
"content": "Why is it that when I was making something like this in 2013, nobody cared? I submitted it on HaD and everything.https://youtu.be/TRJRJJxBUIohttps://youtu.be/xef6TdkXVxY",
"parent_id": null,
... | 1,760,374,389.273379 | ||
https://hackaday.com/2018/04/29/3d-printing-electronics-direct-to-body/ | 3D Printing Electronics Direct To Body | Al Williams | [
"3d Printer hacks",
"News"
] | [
"3d printing",
"bioprinting"
] | Some argue that the original Star Trek series predicted the flip phone. Later installments of the franchise used little badges. But Babylon 5 had people talking into a link that stuck mysteriously to the back of their hand. This might turn out to be true if researchers at the University of Minnesota have their way. The... | 11 | 6 | [
{
"comment_id": "4513333",
"author": "Gravis",
"timestamp": "2018-04-29T17:22:15",
"content": "A more realistic application of the tracking technology would be automated tattooing.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4513355",
"author": "A... | 1,760,374,389.425234 | ||
https://hackaday.com/2018/04/29/how-to-put-the-pro-in-prototype/ | How To Put The ‘Pro’ In Prototype | Kristina Panos | [
"how-to",
"Misc Hacks"
] | [
"body filler",
"bondo",
"print finishing",
"prototype",
"sanding"
] | It’s easy to get professional-quality finishes on your prints and prototypes if you take the right steps.
In the final installment of his series about building with Bondo, product designer [Eric Strebel] shows us how it’s done no matter what the substrate
.
How does he get such a smooth surface? A few key steps make al... | 5 | 2 | [
{
"comment_id": "4513415",
"author": "Lumor",
"timestamp": "2018-04-29T18:16:00",
"content": "So…. Sanding and painting. What’s the point of this article?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4513434",
"author": "Leithoa",
"timestam... | 1,760,374,389.182083 | ||
https://hackaday.com/2018/04/29/auction-finds-combined-for-a-unique-desoldering-station/ | Auction Finds Combined For A Unique Desoldering Station | Jenny List | [
"Tool Hacks"
] | [
"desoldering",
"desoldering station",
"soldering station",
"vacuum desoldering pump",
"Weller"
] | If you are in the market for a high-quality soldering iron, a rewarding pursuit can be attending dispersal auctions. It is not unusual to see boxes of irons, as anything remotely iron-like is bundled up together by the auctioneer into a lot with little consideration for what combination has been gathered. [Stynus] foun... | 0 | 0 | [] | 1,760,374,389.218875 | ||
https://hackaday.com/2018/04/29/open-source-circuit-simulation/ | Open-source Circuit Simulation | Bryan Cockfield | [
"Software Hacks"
] | [
"circuit",
"psim",
"PSpice",
"qucs",
"simulation",
"software",
"SPICE"
] | For simple circuits, it’s easy enough to grab a breadboard and start putting it together. Breadboards make it easy to check your circuit for mistakes before soldering together a finished product. But if you have a more complicated circuit, or if you need to do response modeling or other math on your design before you s... | 31 | 13 | [
{
"comment_id": "4512980",
"author": "M",
"timestamp": "2018-04-29T09:12:56",
"content": "Here is my list of Open Source EDA related software including more simulation tools:https://github.com/m-thu/sandbox/blob/master/URLs.md#edaMaybe that’s useful for someone…",
"parent_id": null,
"depth":... | 1,760,374,390.106245 | ||
https://hackaday.com/2018/04/28/core-memory-upgrade-for-arduino/ | Core Memory Upgrade For Arduino | Al Williams | [
"Arduino Hacks",
"Retrocomputing",
"Slider"
] | [
"arduino",
"core",
"core memory",
"dump",
"retrocomputing"
] | Linux programs, when they misbehave, produce core dumps. The reason they have that name is that magnetic core memory was the primary storage for computers back in the old days and many of us still refer to a computer’s main memory as “core.” If you ever wanted to have a computer with real core memory you can get
a boar... | 47 | 15 | [
{
"comment_id": "4512746",
"author": "KlaymenDK",
"timestamp": "2018-04-29T05:22:45",
"content": "Why on earth would you do this???I love it.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4512906",
"author": "medix",
"timestamp": "2018-04-29... | 1,760,374,390.037471 | ||
https://hackaday.com/2018/04/28/the-interesting-fate-of-kenyas-first-computers/ | The Interesting Fate Of Kenya’s First Computers | Jenny List | [
"classic hacks"
] | [
"mainframe",
"retrocomputer",
"vintage computer",
"vintage computers"
] | If you are an enthusiast for 1950s computer hardware, you are probably out of luck when it comes to owning a machine of your own. Your best chance will be to join the staff of one of the various museums that preserve and operate these machines, at which you can indulge your passion to your heart’s content. But what if ... | 20 | 7 | [
{
"comment_id": "4512590",
"author": "Ostracus",
"timestamp": "2018-04-29T02:18:19",
"content": "“If you are an enthusiast for 1950s computer hardware, you are probably out of luck when it comes to owning a machine of your own.”Let alone running it.",
"parent_id": null,
"depth": 1,
"repl... | 1,760,374,390.6446 | ||
https://hackaday.com/2018/04/28/the-cake-robot-is-no-lie/ | The Cake Robot Is No Lie | Al Williams | [
"Robots Hacks"
] | [
"cake",
"cake robot",
"cakebot",
"robot",
"robotics"
] | [52 Skillz] didn’t know anything about building robots. So he decided to not just read about it or make a simple robot. He jumped right in and wanted to build a robot that could
make a cake
. It took about a year and a half but it now — mostly — works, as you can see in the video below.
Granted it isn’t perfect and it ... | 12 | 10 | [
{
"comment_id": "4512259",
"author": "ian",
"timestamp": "2018-04-28T23:07:20",
"content": "I sort of did something similar, a real hacking project. I called it ‘get a wife who can make a cake’ :-)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4512285",
... | 1,760,374,390.475567 | ||
https://hackaday.com/2018/04/28/vastly-improving-the-battery-life-on-cheap-action-cams/ | Vastly Improving The Battery Life On Cheap Action Cams | Brian Benchoff | [
"The Hackaday Prize"
] | [
"18650",
"2018 Hackaday Prize",
"action cam",
"battery",
"SQ11"
] | At one time, GoPro was valued at over eleven Billion dollars. It’s now on the verge of being a penny stock, because if surfers can make action cams and video editing software,
anyone
can. Action cams are everywhere, and one of the cheapest is the SQ11. It’s a rip-off of the Polaroid Cube, has a non-standard USB socket,... | 21 | 8 | [
{
"comment_id": "4512063",
"author": "jonsmirl",
"timestamp": "2018-04-28T20:08:40",
"content": "Action cams based on the Allwinner V3 can be had for $30 and they are fairly decent. Most are able to shoot 4K20FPS video. The typical mod for the V3 cams is to improve their lenses.",
"parent_id": n... | 1,760,374,390.589044 | ||
https://hackaday.com/2018/04/28/an-open-source-turbomolecular-pump-controller/ | An Open-Source Turbomolecular Pump Controller | Jenny List | [
"Microcontrollers",
"Misc Hacks"
] | [
"Turbomolecular",
"turbomolecular pump",
"vacuum pump"
] | It’s not every project write-up that opens with a sentence like “I had this TURBOVAC 50 turbomolecular pump laying around…”, but then again not every write-up comes from someone with a lab as stuffed full of goodies as that of [Niklas Fauth]. His pump had an expired controller board,
so he’s created an open-source cont... | 18 | 9 | [
{
"comment_id": "4511930",
"author": "Internet",
"timestamp": "2018-04-28T18:27:35",
"content": "These writeups are starting to sound a bit like episodes of television shows centered around pawnshops or salvage finds or storage unit sight unseen auctions that clearly plant things and have experts on... | 1,760,374,390.527405 | ||
https://hackaday.com/2018/04/28/pcb-take-on-stars-moons-and-ringed-planets-is-gold/ | PCB Take On Stars, Moons, And Ringed Planets Is Gold | Mike Szczys | [
"LED Hacks",
"Wearable Hacks"
] | [
"badgelife",
"Big Mess O' Wires",
"eagle",
"enig",
"oshpark",
"pcb art",
"pcb solder mask"
] | Remember when PCBs were green and square? That’s the easy default, but most will agree that when you’re going to show off your boards instead of hiding them in a case, it’s worth extra effort to make them beautiful. We’re in a renaissance of circuit board design and the amount of effort being poured into great looking ... | 3 | 3 | [
{
"comment_id": "4511681",
"author": "Ostracus",
"timestamp": "2018-04-28T15:31:26",
"content": "“We’re in a renaissance of circuit board design and the amount of effort being poured into great looking boards is incredible.”Motherboards and the Bling my case™ movement.",
"parent_id": null,
"... | 1,760,374,390.690977 | ||
https://hackaday.com/2018/04/28/homebrew-not-a-hakko/ | Homebrew Not A Hakko | Al Williams | [
"Tool Hacks"
] | [
"2018 Hackaday Prize",
"Hakko",
"soldering iron",
"thermocouple"
] | We don’t know if [Marius Taciuc] was thinking about how all Jedi make their own lightsabers as a rite of passage, but he decided that it was time to
build his own soldering iron
. He used a Hakko T12 tip which has a built-in thermocouple. However, he found that the information on the Internet about the tips was either ... | 9 | 7 | [
{
"comment_id": "4511281",
"author": "Orlando Hoilett",
"timestamp": "2018-04-28T11:03:16",
"content": "YouTube video is unavailable.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4511294",
"author": "Saabman",
"timestamp": "2018-04-28T11:11:18",
... | 1,760,374,390.294928 | ||
https://hackaday.com/2018/04/28/umbrella-and-tin-cans-turned-into-wifi-dish-antenna/ | Umbrella And Tin Cans Turned Into WiFi Dish Antenna | Dan Maloney | [
"Radio Hacks",
"Wireless Hacks"
] | [
"beam",
"cantenna",
"directional",
"dish",
"feedpoint",
"parabola",
"parabolic",
"reflector",
"waveguide",
"wifi"
] | There’s something iconic about dish antennas. Chances are it’s the antenna that non-antenna people think about when they picture an antenna. And for many applications, the directionality and gain of a dish can really help reach out and touch someone. So if you’re looking to tap into a distant WiFi network,
this umbrell... | 24 | 10 | [
{
"comment_id": "4511198",
"author": "Dennis Milligan",
"timestamp": "2018-04-28T10:04:49",
"content": "What was that box hanging out the tin can?And did he hook it up straight to a computer?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4511971",
"... | 1,760,374,390.758301 | ||
https://hackaday.com/2018/04/27/hackaday-takes-the-toon-well-be-at-uk-maker-faire-will-you/ | Today: Hackaday Is At UK Maker Faire Plus Afterparty | Jenny List | [
"cons"
] | [
"Bring A Hack",
"Newcastle",
"Tindie",
"UK Bring-A-Hack",
"UK Maker Faire"
] | As a finale to our month on the road through parts of the British Isles, we’ll be at UK Maker Faire this weekend, and we’ll also be hosting
our final bring-a-hack at Maker Space Newcastle
this evening, Saturday the 28th of April.
For the rest of the weekend’s
UK Maker Faire
, held at Newcastle’s Life Science Centre, yo... | 0 | 0 | [] | 1,760,374,390.330059 | ||
https://hackaday.com/2018/04/27/an-open-source-sip-and-puff-mouse-for-affordable-accessibility/ | An Open Source Sip-and-Puff Mouse For Affordable Accessibility | Dan Maloney | [
"Medical Hacks",
"Misc Hacks"
] | [
"assistive technology",
"Joystick",
"mouthpiece",
"sip-and-puff"
] | At the core of any assistive technology is finding a way to do something with whatever abilities the user has available. This can be especially difficult in the case of quadriplegia sufferers, the loss of control of upper and lower limbs caused by spinal cord damage in the cervical region. Quadriplegics can gain some c... | 22 | 13 | [
{
"comment_id": "4510783",
"author": "hbhhh",
"timestamp": "2018-04-28T05:06:47",
"content": "Perfect way to grow some nasty bacteria in this 3D printed mouthpiece.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4510973",
"author": "Daniel Larrosa",
"t... | 1,760,374,390.819128 | ||
https://hackaday.com/2018/04/27/cams-and-pushrods-improve-3d-printed-compressed-air-engine/ | Cams And Pushrods Improve 3D-Printed Compressed Air Engine | Dan Maloney | [
"Misc Hacks"
] | [
"cam",
"compressed air",
"design",
"engine",
"follower",
"poppet",
"pushrod",
"valve"
] | Some folks just can’t leave well enough alone, and that often ends up being a good thing. Such is the case with
this 3D-printed compressed air engine
, which just keeps getting better.
The design has changed a lot since we first covered [Tom Stanton]’s attempts at
reviving the powerplant
from the glory days of the Air ... | 12 | 4 | [
{
"comment_id": "4510650",
"author": "Chris Knight",
"timestamp": "2018-04-28T02:23:37",
"content": "Lovely work with some nice analysis of options.Buuuuut, (as with the previous post on this gent’s work) I would love to see comparing total thrust of a laminar flow air jet valve to the total thrust ... | 1,760,374,390.864604 | ||
https://hackaday.com/2018/04/27/2018s-hottest-accessory-is-a-3d-printed-air-raid-siren/ | 2018’s Hottest Accessory Is A 3D Printed Air Raid Siren | Lewin Day | [
"3d Printer hacks"
] | [
"3d printing",
"air raid",
"air raid siren",
"siren"
] | Some say the spectre of global nuclear annihilation is closer than ever before. What better time to head to the workshop to prepare for the coming apocalypse? [MrExpert] is here with the build you need –
an air raid siren you can print at home.
It’s a simple build, which makes it fun and accessible for just about anyon... | 11 | 5 | [
{
"comment_id": "4510560",
"author": "bty",
"timestamp": "2018-04-28T00:13:00",
"content": "might want to wear safety glasses when running at high RPM. Also seems like it could use some balancing. and maybe a little horn will make it a bit louder.",
"parent_id": null,
"depth": 1,
"replie... | 1,760,374,391.265399 | ||
https://hackaday.com/2018/04/27/thermoelectric-fan-harvests-wood-stove-heat-junkyard-style/ | Thermoelectric Fan Harvests Wood Stove Heat Junkyard Style | Dan Maloney | [
"green hacks"
] | [
"blower",
"fan",
"peltier",
"TEG",
"thermocouple",
"thermoelectric generator",
"wood heat"
] | Anyone who heats with a wood stove knows that the experience is completely different from typical central heating. It’s not for everyone, though, and it’s certainly not without its trade-offs. One of the chief complaints is getting heat away from the stove and into other areas of the house, and many owners turn on an e... | 28 | 14 | [
{
"comment_id": "4510234",
"author": "janostman",
"timestamp": "2018-04-27T20:17:36",
"content": "Anyone doing these kinds of hacks own a Flir.I do. :)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4510293",
"author": "james",
"timestamp": "2018-04-27... | 1,760,374,391.42552 | ||
https://hackaday.com/2018/04/27/checking-the-weather-without-a-window/ | Checking The Weather Without A Window | Drew Risinger | [
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"acrobotic",
"ESP8266",
"IoT",
"oled display",
"weather",
"weather display",
"weather forecast",
"weather underground",
"Wemos",
"wemos d1 mini",
"wemos mini d1"
] | Making a weather display is great because it’s a simple project that shows off some skills and has an obvious daily use. So [ACROBOTIC Industries]
decided to make an easy kit for the Hackaday Prize
to make weather displays even more accessible.
Calling it the ESPecter, [ACROBOTIC Industries] wanted to make this a simpl... | 9 | 6 | [
{
"comment_id": "4510148",
"author": "Severe Tire Damage",
"timestamp": "2018-04-27T19:18:00",
"content": "Qute !!",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4510174",
"author": "asheets",
"timestamp": "2018-04-27T19:39:17",
"content": "https:/... | 1,760,374,391.314171 | ||
https://hackaday.com/2018/04/27/a-blockchain-robotics-and-ai-event-in-vietnam/ | A Blockchain, Robotics And AI Event In Vietnam | Sean Boyce | [
"cons",
"Hackaday Columns",
"Software Development"
] | [
"blockchain",
"education",
"events"
] | Blockchain Education Network
Vietnam recently held an event titled “
Building a Robotics & Artificial Intelligence Ecosystem with Blockchain
”. The title alone has three of my favorite things in it, so when a client of mine asked me if I could put together a little hardware demonstration for the event, I jumped at the ... | 7 | 3 | [
{
"comment_id": "4510014",
"author": "Ostracus",
"timestamp": "2018-04-27T17:35:51",
"content": "“The parts are far from ideal as they’ve been running very hot and are caked with thick layers of greasy dust, yet obtaining a reasonable price is difficult.”Must be talking GPU instead of ASICs, which I... | 1,760,374,391.476991 | ||
https://hackaday.com/2018/04/27/ir-detective-eases-development-with-compact-decoding/ | IR Detective Eases Development With Compact Decoding | Donald Papp | [
"ATtiny Hacks"
] | [
"38kHz",
"40khz",
"attiny",
"attiny85",
"decoder",
"infrared",
"ir prototocol",
"ir receiver",
"prototcol"
] | Hardware development often involves working with things that can’t be directly perceived, which is one reason good development tools are so important. In appreciation of this, [David Johnson-Davies] created the
IR Remote Control Detective
to simplify working with IR signals. While IR remote controls are commonplace, th... | 13 | 6 | [
{
"comment_id": "4509815",
"author": "jcwren",
"timestamp": "2018-04-27T15:35:19",
"content": "IR see what you did there…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4509843",
"author": "Ostracus",
"timestamp": "2018-04-27T15:47:34",
"content": ... | 1,760,374,391.360018 | ||
https://hackaday.com/2018/04/27/circuit-vr-oscillating-bridges/ | Circuit VR: Oscillating Bridges | Al Williams | [
"Hackaday Columns",
"how-to",
"Original Art"
] | [
"LTSpice",
"oscillator",
"SPICE",
"wien bridge"
] | Circuit VR is where we talk about a circuit and examine how it works in simulation with LT Spice. This time we are looking at a common low-frequency oscillator known as the Wien bridge oscillator.
What makes an oscillator oscillate? A circuit with amplification that gets the same amount of the output signal fed back in... | 21 | 12 | [
{
"comment_id": "4509721",
"author": "Ostracus",
"timestamp": "2018-04-27T14:24:25",
"content": "“Circuit VR is where we talk about a circuit and examine how it works in simulation with LT Spice. ”And here we was thinking VRing through a physical circuit (as exciting as that would be).",
"parent... | 1,760,374,391.597477 | ||
https://hackaday.com/2018/04/27/unlocking-drones-with-go/ | Unlocking Drones With Go | Bryan Cockfield | [
"drone hacks"
] | [
"drone",
"features",
"Go",
"program",
"programming language",
"wifi"
] | Looking for a first project in a relatively new language that’ll stretch your abilities? [Ron] was, so he
hacked a commercially available drone and opened up a lot of its functionality
, while writing the client software in Go.
The drone is a DJI Tello, which has some impressive hardware like a 14-core Intel processor ... | 14 | 8 | [
{
"comment_id": "4509503",
"author": "kryptylomese",
"timestamp": "2018-04-27T11:48:50",
"content": "What is the CPU model used in the DJI Tello?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4509587",
"author": "Max Siegieda (@CampGareth)",
... | 1,760,374,391.523835 | ||
https://hackaday.com/2018/04/27/a-low-cost-dead-tree-touch-screen/ | A Low Cost, Dead Tree Touch Screen | Dan Maloney | [
"Misc Hacks",
"News"
] | [
"capacitive",
"conductive",
"e-paper",
"HMI",
"touch screen"
] | Remember the “paperless office”? Neither do we, because despite the hype of end-to-end digital documents, it never really happened. The workplace is still a death-trap for trees, and with good reason: paper is cheap, literally growing on trees, and it’s the quickest and easiest medium for universal communication and co... | 38 | 17 | [
{
"comment_id": "4509157",
"author": "John blackthorn",
"timestamp": "2018-04-27T08:11:29",
"content": "“IOT newspaper” really? If you’re connected to the Internet, you don’t need a newspaper and if you’re reading a newspaper you’re probably not online.We’ve been digitising paper images for years n... | 1,760,374,391.899766 | ||
https://hackaday.com/2018/04/26/catch-a-rising-star-with-arduino/ | Catch A Rising Star With Arduino | Al Williams | [
"Arduino Hacks"
] | [
"arduino",
"astronomy",
"telescope"
] | Space is big. Really big. Yet on TV and movies, enemy spacecraft routinely wind up meeting at roughly the same spot and, miraculously, in the same orientation. If you’ve ever tried to find something smaller than the moon in a telescope, you’ll appreciate that it isn’t that easy. There are plenty of tricks for locating ... | 11 | 7 | [
{
"comment_id": "4509329",
"author": "sandman42",
"timestamp": "2018-04-27T09:43:58",
"content": "Has anybody taken this to the next level by using an IMU (like an MPU9250) instead of potentiometers that you’ll have to attach to your telescope? You point to Polaris for IMU calibration and go from th... | 1,760,374,391.825821 | ||
https://hackaday.com/2018/04/26/google-lowers-the-artificial-intelligence-bar-with-complete-diy-kits/ | Google Lowers The Artificial Intelligence Bar With Complete DIY Kits | Drew Risinger | [
"Raspberry Pi"
] | [
"ai",
"AIY",
"artificial intelligence",
"artificial intelligence yourself",
"electronic kit",
"google",
"Google AIY",
"kit"
] | Last year, Google released an artificial intelligence kit aimed at makers, with two different flavors: Vision to recognize people and objections, and Voice to create a smart speaker. Now, Google is back with a
new version
to make it even easier to get started.
The main difference in this year’s (v1.1) kits is that they... | 45 | 17 | [
{
"comment_id": "4508645",
"author": "Daniel Matthews",
"timestamp": "2018-04-27T02:19:23",
"content": "I wish Google didn’t over hype this, it is just some python code and a few neural network models. Less than 50 megabytes of data, the rest is just a computer with accessible I/O lines that runs Li... | 1,760,374,391.684871 | ||
https://hackaday.com/2018/04/26/synthbike-rolls-to-the-beat/ | Synthbike Rolls To The Beat | Lewin Day | [
"Musical Hacks"
] | [
"arduino",
"arduino nano",
"modular",
"modular synth",
"Modular synthesizer",
"synth",
"synthesizer"
] | Modular synthesizers are some of the ultimate creative tools for the electronic musician. By experimenting with patch leads, knobs and switches, all manner of rhythmic madness can be conjured out of the æther. While they may overflow with creative potential, modular synths tend to fall down in portability. Typically bu... | 11 | 7 | [
{
"comment_id": "4508247",
"author": "Gravis",
"timestamp": "2018-04-26T23:16:07",
"content": "Does anyone else suspect he’s a time traveler from the 1980s? ;)",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4508341",
"author": "Mark",
"timest... | 1,760,374,391.945963 | ||
https://hackaday.com/2018/04/26/reverse-engineering-nintendo-labo-waveform-cards/ | Reverse Engineering Nintendo Labo Waveform Cards | Richard Baguley | [
"Musical Hacks",
"Nintendo Hacks"
] | [
"3d printing",
"Nintendo Switch"
] | The Nintendo Switch portable gaming system is heavily locked down to prevent hacking, but the
Labo
add-on looks like it might be a different matter. The Labo is a series of add-on devices made of cardboard that does things like turn the Switch into a musical keyboard that plays a waveform on a card that you slot in. [H... | 29 | 9 | [
{
"comment_id": "4507953",
"author": "AndrewNeo",
"timestamp": "2018-04-26T20:15:09",
"content": "“The Nintendo Switch portable gaming system is heavily locked down to prevent hacking”Well, except for that unpatchable bootloader exploit they found a few days ago.",
"parent_id": null,
"depth"... | 1,760,374,392.375836 | ||
https://hackaday.com/2018/04/26/a-mini-itx-pdp-11/ | A Mini-ITX PDP-11 | Brian Benchoff | [
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"DEC PDP-11",
"mini-itx",
"pdp",
"pdp-11"
] | The PDP-11 is perhaps the most important computer in history. This was the king of all minicomputers, and once you get past the amazing front panels of the 11/20, 11/40, and 11/70, you’ll find PDP-11s everywhere. Heathkit sold one. It was the smallest computer that could run Unix. There were desktop versions sold as DE... | 36 | 17 | [
{
"comment_id": "4507212",
"author": "Dan Riches",
"timestamp": "2018-04-26T18:54:53",
"content": "I love the old retro computer rebuilds, a while ago I built my own retrobsd pic32 board, Unix running on less than half a credit card size with an 8Gb SD card to boot. We need more of these retro build... | 1,760,374,392.193206 | ||
https://hackaday.com/2018/04/26/is-it-on-yet-sensing-the-world-around-us-starting-with-light/ | Is It On Yet? Sensing The World Around Us, Starting With Light | Bob Baddeley | [
"how-to",
"LED Hacks",
"Parts"
] | [
"CCD",
"led",
"optocoupler",
"optoisolator",
"photocell",
"photodiode",
"phototransistor"
] | Arduino 101 is getting an LED to flash. From there you have a world of options for control, from MOSFETs to relays, solenoids and motors, all kinds of outputs. Here, we’re going to take a quick look at some inputs. While working on a
recent project
, I realized the variety of options in sensing something as simple as w... | 10 | 6 | [
{
"comment_id": "4507042",
"author": "rnjacobs",
"timestamp": "2018-04-26T17:28:56",
"content": "I though the transfer bandwidth of photoresistors was closer to 1kHz than 10Hz? But … yes, certainly still very low.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id"... | 1,760,374,392.111334 | ||
https://hackaday.com/2018/04/26/writing-on-a-whiteboard-performed-by-a-robot/ | Writing On A Whiteboard, Performed By A Robot | Jenny List | [
"Robots Hacks"
] | [
"arm",
"mbed",
"robot arm",
"robot writer",
"whiteboard"
] | For some of us here at Hackaday, school is but a very distant memory. All that teenage awkwardness we’d rather forget, synth pop, and 8-bit computers were cool the first time around, and our newer classrooms didn’t have blackboards any more. The Whiteboard Future Had Arrived, and it came with solvent-laden pens that ou... | 6 | 3 | [
{
"comment_id": "4506900",
"author": "Ostracus",
"timestamp": "2018-04-26T16:06:28",
"content": "“For some of us here at Hackaday, school is but a very distant memory. All that teenage awkwardness we’d rather forget, synth pop, and 8-bit computers were cool the first time around, and our newer class... | 1,760,374,392.232901 | ||
https://hackaday.com/2018/04/26/mechanisms-the-lever/ | Mechanisms: The Lever, It’s Everywhere | Steven Dufresne | [
"Engineering",
"Featured",
"Slider"
] | [
"exoskeleton",
"human",
"lever",
"Mechanisms",
"ornithopter"
] | Levers are literally all around us. You body uses them to move, pick up a pen to sign your name and you’ll use mechanical advantage to make that ballpoint roll, and that can of soda doesn’t open without a cleverly designed lever.
I got onto this topic quite by accident. I was making an ornithopter and it was having tro... | 28 | 14 | [
{
"comment_id": "4506745",
"author": "PirateLabs",
"timestamp": "2018-04-26T14:11:44",
"content": "Wow, I learned something new here that I had never even thought about. Thanks.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4506786",
"author": "NiH... | 1,760,374,392.309194 | ||
https://hackaday.com/2018/04/26/turn-failed-prints-into-office-fun-with-a-paper-airplane-maker/ | Turn Failed Prints Into Office Fun With A Paper Airplane Maker | Dan Maloney | [
"Misc Hacks",
"Toy Hacks"
] | [
"airplane",
"dart",
"folding",
"jig",
"paper",
"recycle"
] | If you’re anything like us, you feel slightly guilty when you send a job to a printer only to find that twenty pages have printed wrong. Maybe it’s a typo, maybe it’s the dreaded landscape versus portrait issue. Whatever it is, trees died for your mistake, and there’s nothing you can do about it except to recycle the w... | 11 | 4 | [
{
"comment_id": "4506515",
"author": "Genki",
"timestamp": "2018-04-26T12:01:16",
"content": "And now people would add intentional tpyo just to use the fun machine and throw paper airplane around.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4506583",
... | 1,760,374,392.654465 | ||
https://hackaday.com/2018/04/26/neural-network-names-nightshades/ | Neural Network Names Nightshades | Lewin Day | [
"green hacks"
] | [
"ai",
"char-rnn",
"neural network",
"Tomato"
] | Neural networks are a core area of the artificial intelligence field. They can be trained on abstract data sets and be put to all manner of useful duties, like driving cars while ignoring road hazards or identifying cats in images. Recently, a biologist approached AI researcher [Janelle Shane] with a problem –
could sh... | 12 | 7 | [
{
"comment_id": "4506430",
"author": "Jake Brodsky",
"timestamp": "2018-04-26T10:41:22",
"content": "Jannelle Shane has also done other neural network systems that didn’t go so well.http://aiweirdness.com/post/160776374467/new-paint-colors-invented-by-neural-networkThe results, though disappointing,... | 1,760,374,392.539969 | ||
https://hackaday.com/2018/04/25/motor-test-bench-talks-the-torque/ | Motor Test Bench Talks The Torque | Ben James | [
"Arduino Hacks",
"Repair Hacks"
] | [
"brake",
"dynamometer",
"magnetic",
"motor",
"repair",
"test"
] | Salvaging a beefy motor is one life’s greatest pleasures for a hacker, but, when it comes to using it in a new project, the lack of specs and documentation can be frustrating. [The Post Apocalyptic Inventor] has a seemingly endless stockpile of scavenged motors, and decided to
do something about the problem
.
Once agai... | 6 | 4 | [
{
"comment_id": "4506112",
"author": "Tegwyn Twmfatt",
"timestamp": "2018-04-26T08:24:34",
"content": "Not really helpful for DIY torque testing. You can get max torque at zero RPM by connecting a spring balance to nut running on ballscrew eg:https://youtu.be/xP2ug_Zk4w8",
"parent_id": null,
... | 1,760,374,392.703666 | ||
https://hackaday.com/2018/04/25/microsoft-secures-iot-from-the-microcontroller-up/ | Microsoft Secures IoT From The Microcontroller Up | Drew Risinger | [
"Microcontrollers",
"News"
] | [
"Azure Sphere",
"IoT",
"iot security",
"linux",
"microsoft",
"RTOS",
"security"
] | Frustrated by the glut of unsecured IoT devices? So are Microsoft. And they’re using custom Linux and hardware to do something about it.
Microsoft have
announced a new ecosystem for secure IoT devices
called “Azure Sphere.” This system is threefold: Hardware, Software, and Cloud. The hardware component is a Microsoft-c... | 48 | 26 | [
{
"comment_id": "4505436",
"author": "Deb Whittam",
"timestamp": "2018-04-26T02:17:32",
"content": "Isn’t that interesting – my partner is a Linux supporter.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4505444",
"author": "Cbob",
"timestamp": "2018-... | 1,760,374,392.804954 | ||
https://hackaday.com/2018/04/25/roll-up-your-sleeve-watch-a-video-with-this-smart-watch-forearm-projector/ | Roll Up Your Sleeve, Watch A Video With This Smart Watch Forearm Projector | Dan Maloney | [
"Wearable Hacks"
] | [
"display",
"gesture",
"laser",
"MEMS",
"projector",
"smart watch",
"TOF",
"touch"
] | We’re all slowly getting used to the idea of wearable technology, fabulous flops like the creepy Google Glass notwithstanding. But the big problem with tiny tech is in finding the real estate for user interfaces. Sure, we can make it tiny, but human fingers aren’t getting any smaller, and eyeballs can only resolve so m... | 35 | 18 | [
{
"comment_id": "4505245",
"author": "Ostracus",
"timestamp": "2018-04-25T23:21:40",
"content": "” But the big problem with tiny tech is in finding the real estate for user interfaces. Sure, we can make it tiny, but human fingers aren’t getting any smaller, and eyeballs can only resolve so much fine... | 1,760,374,392.610328 | ||
https://hackaday.com/2018/04/25/video-quick-bit-numitrons-and-infinite-build-volumes/ | Video Quick-Bit: Numitrons And Infinite Build Volumes | Brian Benchoff | [
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"Robotics Module",
"the hackaday prize"
] | Majenta Strongheart
takes a look at a couple of cool entries
from the first round of the
2018 Hackaday Prize
:
This is an infinite 3D printer
. The Workhorse 3D is the way we’re going to democratize 3D printing. The Workhorse 3D printer does this by adding a conveyor belt to the bed of a 3D printer, allowing for rapid
... | 6 | 5 | [
{
"comment_id": "4506268",
"author": "Luke",
"timestamp": "2018-04-26T09:19:55",
"content": "Kinda reminds me of the 90’s school TV channels. I think it’s the bluescreen.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4506563",
"author": "Doc Oct",
"ti... | 1,760,374,392.860786 | ||
https://hackaday.com/2018/04/25/adventures-in-gas-filled-tube-arrays/ | Adventures In Gas Filled Tube Arrays | Brian Benchoff | [
"classic hacks",
"Microcontrollers"
] | [
"array",
"IGG1",
"nixie",
"pixel",
"tube",
"ИГГ1"
] | Vacuum tubes are awesome, and Nixies are even better. Numitrons are the new hotness, but there’s one type of tube out there that’s better than all the rest. It’s the ИГГ1-64/64M. This is a panel of tubes in a 64 by 64 grid, some with just green dots, some with green and orange, and even a red, green, blue 64 by 64 pixe... | 11 | 8 | [
{
"comment_id": "4505018",
"author": "Yoshi Panasonic",
"timestamp": "2018-04-25T20:39:55",
"content": "Would plasma be considered a tube type display? In a few years they’ll be the new HaD hotness.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4505022",
... | 1,760,374,392.955458 | ||
https://hackaday.com/2018/04/25/litar-an-air-guitar-using-lidar/ | Litar: An Air Guitar Using LiDAR | Steven Dufresne | [
"Musical Hacks",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"air guitar",
"hall sensor",
"lidar"
] | This year, [Blecky’s] Hackaday Prize Entry is
an air guitar which uses multiple LiDAR sensors to create the virtual strings
. What’s also neat is that he’s using his own LiDAR sensor, the
MappyDot Plus
, an enhanced version of his 2017 Prize Entry, the
MappyDot
.
He uses a very clever arrangement of six sensors to get ... | 6 | 2 | [
{
"comment_id": "4505078",
"author": "djmips",
"timestamp": "2018-04-25T21:19:02",
"content": "Love it. Looks fun. I’ll put it on my list to make.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4505301",
"author": "Internet",
"timestamp": "2018-04-26T0... | 1,760,374,392.908975 | ||
https://hackaday.com/2018/04/25/retrotechtacular-synchros-go-to-war-and-peace/ | Retrotechtacular: Synchros Go To War (and Peace) | Al Williams | [
"Hackaday Columns",
"hardware"
] | [
"position sensor",
"selsyn",
"synchro",
"world war II"
] | Rotation. Motors rotate. Potentiometers and variable capacitors often rotate. It is a common task to have to rotate something remotely or measure the rotation of something. If I asked you today to rotate a volume control remotely, for example, you might offer up an open loop stepper motor or an RC-style servo. If you w... | 41 | 21 | [
{
"comment_id": "4504680",
"author": "Chris Maple",
"timestamp": "2018-04-25T17:16:59",
"content": "Similar to synchros, there were also resolvers, which had 4 fixed windings instead of 3.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4504682",
"author": ... | 1,760,374,393.185137 | ||
https://hackaday.com/2018/04/24/dissecting-the-avr-debugwire/ | Dissecting The AVR DebugWire | Will Sweatman | [
"Microcontrollers"
] | [
"AVR",
"debug",
"debugwire"
] | Anyone who’s ever written more than a dozen or so lines of code knows that debugging is a part of life in our world. Anyone who’s written code for microcontrollers knows that physical debugging is a part of our life as well. Atmel processors use a serial communications protocol called debugWire, which is a simpler vers... | 2 | 2 | [
{
"comment_id": "4502598",
"author": "Olsen",
"timestamp": "2018-04-24T17:18:51",
"content": "Could DebugWire be used to make a front panel for an atmel processor?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4506880",
"author": "jafinch78",
"timesta... | 1,760,374,393.101315 | ||
https://hackaday.com/2018/04/23/assemble-your-own-modular-li-ion-batteries/ | Assemble Your Own Modular Li-Ion Batteries | Drew Risinger | [
"hardware"
] | [
"18650",
"battery",
"battery pack",
"kickstarter",
"Li-ion"
] | Low-voltage DC power electronics are an exciting field right now. Easy access to 18650 battery cells and an abundance of used Li-Ion cells from laptops, phones, etc. has opened the door for hackers building their own battery packs from these cheap cells. A big issue has been the actual construction of a pack that can h... | 50 | 17 | [
{
"comment_id": "4501556",
"author": "jrfl",
"timestamp": "2018-04-24T05:31:47",
"content": "I wouldn’t trust those spring loaded clips in any sort of mobile application. There is a reason battery packs are welded, and it is that trying to put large amounts of current through a weenie spring loaded ... | 1,760,374,393.318503 | ||
https://hackaday.com/2018/04/23/parametric-hinges-with-tinkercad/ | Parametric Hinges With Tinkercad | Al Williams | [
"3d Printer hacks"
] | [
"3d printer",
"hinge",
"openscad",
"tinkercad"
] | Simple tools are great, but sometimes it is most convenient to just use something easy, and since it gets the work done, you don’t try out some of the other features. Tinkercad is a great example of that kind of program. It is actually quite powerful, but many people just use it in the simplest way possible. [Chuck] no... | 7 | 4 | [
{
"comment_id": "4501436",
"author": "Ostracus",
"timestamp": "2018-04-24T03:09:27",
"content": "Bat-hinges.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4501645",
"author": "RandyKC",
"timestamp": "2018-04-24T07:07:37",
"content": ... | 1,760,374,393.229126 | ||
https://hackaday.com/2018/04/23/detoured-caltechs-hackerspace/ | Detoured: Caltech’s Hackerspace | Brian Benchoff | [
"Hackerspaces"
] | [
"caltech",
"detoured",
"hackerspace"
] | Over the last few months, the folks over at the SupplyFrame Design Lab, home to Hackaday meetups, the Hackaday Superconference, and far, far too many interesting tools, have been spending their time visiting workshops and hackerspaces to see how they tick. Staff Designer of the Design Lab, [Majenta Strongheart], recent... | 1 | 1 | [
{
"comment_id": "4501330",
"author": "Mechanicus",
"timestamp": "2018-04-24T01:40:10",
"content": "Lucky students with the hands on to go with the books, I wish I would have had an opportunity like that in college. Good interview questions too, thanks.",
"parent_id": null,
"depth": 1,
"r... | 1,760,374,394.892656 | ||
https://hackaday.com/2018/04/23/3000w-unicycles-only-limitation-is-personal-courage/ | 3000W Unicycle’s Only Limitation Is “Personal Courage” | Donald Papp | [
"Engine Hacks",
"Transportation Hacks"
] | [
"brushless",
"brushless motor",
"dac",
"electric motorcycle",
"esc",
"hub motor",
"IMU",
"LTC2644",
"self balancing",
"unicycle",
"vehicle",
"voice output"
] | Electric vehicles are fertile ground for innovation because the availability of suitable motors, controllers, and power sources makes experimentation accessible even to hobbyists. Even so, [John Dingley] has been working on such vehicles since about 2009, and
his latest self-balancing electric unicycle
really raises th... | 38 | 13 | [
{
"comment_id": "4500837",
"author": "Ren",
"timestamp": "2018-04-23T20:21:58",
"content": "What???NO SAFETY TIE???Is he crazy?",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4500841",
"author": "Ren",
"timestamp": "2018-04-23T20:23:17",
"content":... | 1,760,374,395.075102 | ||
https://hackaday.com/2018/04/23/tiny-vacuum-chamber-arm-to-help-with-homemade-semiconductors/ | Tiny Vacuum Chamber Arm To Help With Homemade Semiconductors | Dan Maloney | [
"The Hackaday Prize",
"Tool Hacks"
] | [
"2018 Hackaday Prize",
"arm",
"deposition",
"fab lab",
"manipulator",
"scara",
"semiconductor",
"thin film",
"vacuum"
] | [Nixie] wants to make semiconductors at home, and that requires some unusual tools. Chief among them is a vacuum chamber to perform thin-film deposition, and true to the hacker credo his is homemade, and will soon be equipped with
a tiny manipulator arm with magnetically coupled mechanical controls
.
If [Nixie]’s setup... | 13 | 5 | [
{
"comment_id": "4500689",
"author": "Ostracus",
"timestamp": "2018-04-23T19:05:50",
"content": "“[Nixie] wants to make semiconductors at home, and that requires some unusual tools.”Reminded of the open-hardware HaD article.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"co... | 1,760,374,394.990646 | ||
https://hackaday.com/2018/04/23/teardown-led-bulb-yields-tiny-ups/ | Teardown: LED Bulb Yields Tiny UPS | Tom Nardi | [
"Featured",
"LED Hacks",
"Slider",
"Teardown"
] | [
"battery backup",
"led bulb",
"microcontroller",
"teardown",
"ups"
] | Occasionally you run across a product that you just know is simply too good to be true. You might not know
why
, but you’ve got a hunch that what the bombastic phrasing on the package is telling you just doesn’t quite align with reality. That’s the feeling I got recently when I spotted the “LED intellibulb Battery Back... | 90 | 23 | [
{
"comment_id": "4500498",
"author": "Ren",
"timestamp": "2018-04-23T17:03:28",
"content": "So, how does it know the difference between a power outage and the switch being turned off?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4500501",
"author":... | 1,760,374,395.212879 | ||
https://hackaday.com/2018/04/25/friday-hack-chat-control-schemes-for-robotics/ | Friday Hack Chat: Control Schemes For Robotics | Brian Benchoff | [
"Hackaday Columns",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"Hack Chat",
"Hackaday Prize",
"robotics",
"robotics modules"
] | The Hackaday Prize
is in full swing if you haven’t heard. It’s the Academy Awards of Open hardware, and the chance for you — yes,
you
— to create the next great piece of hardware and a better future for everyone. Right now, we’re in the
Robotics Module Challenge
portion of the prize. This is your chance to build a modu... | 1 | 1 | [
{
"comment_id": "4504649",
"author": "Walker",
"timestamp": "2018-04-25T16:47:15",
"content": "Awesome, Stoked!",
"parent_id": null,
"depth": 1,
"replies": []
}
] | 1,760,374,394.938406 | ||
https://hackaday.com/2018/04/25/reflow-rig-makes-smd-soldering-a-wok-in-the-park/ | Reflow Rig Makes SMD Soldering A Wok In The Park | Dan Maloney | [
"Tool Hacks"
] | [
"arduino",
"control",
"hot plate",
"max 6675",
"pid",
"proportional-integral-derivative",
"reflow",
"smd",
"ssr",
"thermocouple"
] | For a DIY reflow setup, most people seem to rely on the trusty thrift store toaster oven as a platform to hack. But there’s something to be said for heating the PCB directly rather than heating the surrounding air, and for that one can cruise the yard sales looking for a hot plate to convert. But
an electric wok as a r... | 14 | 8 | [
{
"comment_id": "4504498",
"author": "drenehtsral",
"timestamp": "2018-04-25T15:09:21",
"content": "I wonder if putting a special clear patch of ground plane somewhere to clip a temperature probe to would help more accurately track the temperature of the board itself in the toaster-oven scenario whe... | 1,760,374,395.310844 | ||
https://hackaday.com/2018/04/25/firing-bullets-through-propellers/ | Firing Bullets Through Propellers | Steven Dufresne | [
"Engineering",
"History",
"Original Art",
"Weapons Hacks"
] | [
"aerial",
"airplane",
"combat",
"Fokker Zentralsteuerung",
"gear",
"machine gun",
"propeller",
"synchronizer",
"world war I",
"WWI"
] | Early airborne combat was more like a drive-by shooting as pilot used handheld firearms to fire upon other aircraft. Whomever could boost firepower and accuracy would have the upper hand and so machine guns were added to planes. But it certainly wasn’t as simple as just bolting one to the chassis.
This was during World... | 39 | 14 | [
{
"comment_id": "4504377",
"author": "PirateLabs",
"timestamp": "2018-04-25T14:08:45",
"content": "This brilliant invention changed air to air combat almost overnight. It seems an obvious solution now after the fact but back then, it was sheer brilliance.",
"parent_id": null,
"depth": 1,
... | 1,760,374,395.611266 | ||
https://hackaday.com/2018/04/25/beat-this-mario-block-like-it-owes-you-money/ | Beat This Mario Block Like It Owes You Money | Tom Nardi | [
"3d Printer hacks",
"Nintendo Hacks"
] | [
"3d printing",
"arduino nano",
"mario",
"prop building",
"vibration sensor"
] | People trying to replicate their favorite items and gadgets from video games is nothing new, and with desktop 3D printing now at affordable prices, we’re seeing more of these types of projects than ever. At the risk of painting with too broad a stroke, most of these projects seem to revolve around weaponry; be it a mys... | 13 | 7 | [
{
"comment_id": "4504068",
"author": "Ostracus",
"timestamp": "2018-04-25T11:48:47",
"content": "Just be glad someone doesn’t want to recreate the “iconic” crate and crowbar.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4504169",
"author": "Matt Cramer",... | 1,760,374,395.418015 | ||
https://hackaday.com/2018/04/25/smart-outlet-cover-offers-lessons-on-going-from-project-to-product/ | Smart Outlet Cover Offers Lessons On Going From Project To Product | Dan Maloney | [
"home hacks"
] | [
"ATmega 328",
"design",
"differential amplifier",
"market",
"NEMA",
"outlet",
"power meter",
"product"
] | Going from idea to one-off widget is one thing; engineering the widget into a marketable product is quite another. So sometimes it’s instructive to take an in-depth look at a project that was designed from the get-go to be a consumer product, like
this power indicating wall outlet cover plate
. The fact that it’s a pre... | 14 | 5 | [
{
"comment_id": "4503672",
"author": "Mike Massen",
"timestamp": "2018-04-25T08:09:41",
"content": "So the more you use adds a coefficient greater than 1 so you use more power,the OCD purists night find this as fodder for objection, its a good start congrats.Nice idea though I want the option of jus... | 1,760,374,395.363412 | ||
https://hackaday.com/2018/04/24/temperature-sensor-and-simple-oscillator-make-a-value-added-hf-beacon/ | Temperature Sensor And Simple Oscillator Make A Value-Added HF Beacon | Dan Maloney | [
"Radio Hacks"
] | [
"amateur radio",
"attiny13",
"beacon",
"colpitts",
"ham",
"lm335",
"QRP",
"transmitter"
] | Sometimes the best projects are the simple, quick hits. Easily designed, fast to build, and bonus points for working right the first time. Such projects very often lead to bigger and better things, which appears to be where
this low-power temperature beacon
is heading.
In the world of ham radio, beacon stations are tra... | 13 | 6 | [
{
"comment_id": "4503441",
"author": "TGT",
"timestamp": "2018-04-25T05:25:24",
"content": "I’ve always wanted to make one of these with a solar panel and put it next to a creek near where I live. I’d have it chirp out the depth / flow rate of the water every hour or two. Maybe I’ll build and place ... | 1,760,374,395.263246 | ||
https://hackaday.com/2018/04/24/neural-networks-on-a-stick/ | Neural Networks… On A Stick! | Al Williams | [
"ARM",
"FPGA"
] | [
"fpga",
"image recognition",
"intel",
"movidius",
"neural network",
"Pynq",
"xilinx",
"YOLO"
] | They probably weren’t inspired by [Jeff Dunham’s] jalapeno on a stick, but Intel have created the Movidius neural compute stick which is in effect a neural network in a USB stick form factor. They don’t rely on the cloud, they require no fan, and you can get one for well under $100. We were interested in
[Jeff Johnson’... | 14 | 7 | [
{
"comment_id": "4503326",
"author": "Murray Smith",
"timestamp": "2018-04-25T04:00:35",
"content": "Did anyone else notice the t800 cpu resembles a USB stick?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4503444",
"author": "TGT",
"timesta... | 1,760,374,395.905543 | ||
https://hackaday.com/2018/04/24/first-lithographically-produced-home-made-ic-announced/ | First Lithographically Produced Home Made IC Announced | Jenny List | [
"chemistry hacks",
"hardware",
"Slider"
] | [
"diy",
"home fab",
"home made IC",
"ic",
"integrated circuit",
"lithography"
] | It is now six decades since the first prototypes of practical integrated circuits were produced. We are used to other technological inventions from the 1950s having passed down the food chain to the point at which they no longer require the budget of a huge company or a national government to achieve, but somehow produ... | 55 | 23 | [
{
"comment_id": "4503074",
"author": "Gravis",
"timestamp": "2018-04-24T23:13:27",
"content": "This is great news! Very impressive.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4503104",
"author": "Dougmsbbs",
"timestamp": "2018-04-24T23:44:08",
... | 1,760,374,395.998278 | ||
https://hackaday.com/2018/04/24/former-smoker-now-pats-pockets-for-motivation/ | Former Smoker Now Pats Pockets For Motivation | Kristina Panos | [
"ATtiny Hacks",
"Lifehacks"
] | [
"attiny",
"attiny85",
"ds1307",
"motivation",
"quit smoking"
] | It’s hard to quit smoking. Trust us, we know. Half the battle is wanting to quit in the first place. Once you do, the other half is mostly fighting with yourself until enough time goes by that food tastes better, and life looks longer.
[Danko] recently quit smoking. And because idle hands are Big Tobacco’s tools, he
ke... | 13 | 9 | [
{
"comment_id": "4502894",
"author": "Sid Dabster",
"timestamp": "2018-04-24T20:30:57",
"content": "Imagine if Kester snuck nicotine into their solder. So many people would be jonesing for their maker fix and not know why. Imagine what people might create!",
"parent_id": null,
"depth": 1,
... | 1,760,374,395.742095 | ||
https://hackaday.com/2018/04/24/custom-chips-as-a-service/ | Custom Chips As A Service | Brian Benchoff | [
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"chip",
"custom silicon",
"Itsy-Chipsy",
"silicon"
] | Ages ago, making a custom circuit board was hard. Either you had to go buy some traces at Radio Shack, or you spent a boatload of money talking to a board house. Now, PCBs are so cheap, I’m considering tiling my bathroom with them. Today, making a custom chip is horrifically expensive. You can theoretically make a tran... | 80 | 18 | [
{
"comment_id": "4502735",
"author": "jawnhenry",
"timestamp": "2018-04-24T18:43:03",
"content": "Notnearenough information…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4502740",
"author": "Doc Oct",
"timestamp": "2018-04-24T18:47:19",
"content"... | 1,760,374,395.85798 | ||
https://hackaday.com/2018/04/24/emilie-du-chatelet-an-energetic-life/ | Émilie Du Châtelet: An Energetic Life | Kristina Panos | [
"Biography",
"Featured",
"Original Art",
"Science"
] | [
"Émilie du Châtelet",
"fire",
"Isaac Newton",
"philosophy",
"phlogiston",
"Principia",
"the Enlightenment",
"Voltaire"
] | Émilie du Châtelet lived a wild, wild life. She was a brilliant polymath who made important contributions to the Enlightenment, including adding a mathematical statement of conservation of energy into her French translation of Newton’s
Principia
, debunking the phlogiston theory of fire, and suggesting that what we wou... | 18 | 9 | [
{
"comment_id": "4502585",
"author": "Muris",
"timestamp": "2018-04-24T17:06:34",
"content": "Haha that portrait description though…",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4502600",
"author": "tomás zerolo",
"timestamp": "2018-04-24T17:20:04",
... | 1,760,374,396.32933 | ||
https://hackaday.com/2018/04/24/making-3d-objects-the-scroll-saw-way/ | Making 3D Objects The Scroll Saw Way | Steven Dufresne | [
"classic hacks"
] | [
"scrollsaw",
"wood working"
] | These days most have come to think that if you want to make a complex 3D object with all curved surfaces then a 3D printer is the only way to go. Many have even forgotten that once such things could be hand carved. [JEPLANS], on the other hand, is a master at making these objects using only a scroll saw as he’s done wi... | 9 | 6 | [
{
"comment_id": "4502537",
"author": "ajoig",
"timestamp": "2018-04-24T16:33:56",
"content": "That was about as shocking as a sailor with syphilis.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4502694",
"author": "TGT",
"timestamp": "2018-04-24T18:25... | 1,760,374,396.045465 | ||
https://hackaday.com/2018/04/24/lathe-features-you-should-choose-when-buying-your-first-machine/ | A Buyer’s Guide To Lathe Options | Quinn Dunki | [
"Engineering",
"Featured",
"Slider"
] | [
"buyer's guide",
"lathe",
"machine tools",
"options",
"power feed",
"tool post"
] | Lathes are complicated machines, and buying one requires weighing a lot of options. We’ve already talked about
buying new Asian, or old American machines
(with apologies to the Germans, British, Swiss, and all the other fine 20th century machine tool making-countries). We also talked about
bed length and swing
, and yo... | 59 | 21 | [
{
"comment_id": "4502355",
"author": "deshipu",
"timestamp": "2018-04-24T14:29:56",
"content": "But can it turn undead?",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4502378",
"author": "yetihehe",
"timestamp": "2018-04-24T14:46:57",
... | 1,760,374,396.210806 | ||
https://hackaday.com/2018/04/24/heat-seeking-robot-and-camera-tear-down/ | Heat Seeking Robot And Camera Tear Down | Al Williams | [
"digital cameras hacks",
"Robots Hacks"
] | [
"robot",
"thermal imaging",
"thermopile"
] | [Marco Reps] found an HT02 thermal imaging camera in his mailbox. He found the resolution was fine for looking at big objects but worthless for examining circuit boards. So he decided to just tear it into pieces — an urge we totally understand.
Inside was a thermopile sensor that was easy to reverse engineer. So [Marco... | 16 | 6 | [
{
"comment_id": "4502301",
"author": "Tegwyn Twmfatt",
"timestamp": "2018-04-24T13:56:45",
"content": "Very nice to find a German with a sense of English humour!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4502309",
"author": "CRJEEA",
"ti... | 1,760,374,396.102716 | ||
https://hackaday.com/2018/04/23/bargain-bin-barcode-scanner-keeps-track-of-shopping-needs/ | Bargain Bin Barcode Scanner Keeps Track Of Shopping Needs | Dan Maloney | [
"home hacks"
] | [
"api",
"barcode",
"laser",
"raspberry pi",
"rs-232",
"scanner",
"upc",
"Wunderlist"
] | For most people, a Post-It note or dry-erase board suffices to ensure that household consumables are replenished when they’re used up. But hackers aren’t like most people, so
this surplus barcode scanner turned kitchen inventory manager
comes as little surprise. After all, if something is worth doing, it’s worth overdo... | 18 | 6 | [
{
"comment_id": "4500425",
"author": "Ostracus",
"timestamp": "2018-04-23T16:15:02",
"content": "It works, as long as one has the discipline to be thorough, and stick with it.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4500428",
"author": "Jii",
"t... | 1,760,374,396.266087 | ||
https://hackaday.com/2018/04/23/robotics-module-challenge-build-robot-win-prizes/ | Robotics Module Challenge: Build Robot, Win Prizes | Brian Benchoff | [
"Hackaday Columns",
"Slider",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"Hackaday Prize",
"Robotics Module"
] | Brand new today, we’re going to go all in with
the Robotics Module Challenge!
This is the newest part of the
2018 Hackaday Prize
which is only six weeks old, and already we’ve seen almost six hundred incredible entries. But a new challenge means a fresh start and a perfect time for you to begin your entry.
This is your... | 6 | 6 | [
{
"comment_id": "4500380",
"author": "Ostracus",
"timestamp": "2018-04-23T15:40:40",
"content": "“Wouldn’t it be great if there were some more ways to skip around the hard parts? ”Many a game maker tackling that.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "... | 1,760,374,396.376277 | ||
https://hackaday.com/2018/04/23/what-does-crypto-actually-mean/ | What Does ‘Crypto’ Actually Mean? | Brian Benchoff | [
"Featured",
"Interest",
"Original Art",
"Rants",
"Slider"
] | [
"bitcoin",
"crypto",
"cryptocurrency",
"cryptography",
"grammar",
"greek",
"silly arguments"
] | This article is about crypto. It’s in the title, and the first sentence, yet the topic still remains hidden.
At Hackaday, we are deeply concerned with language. Part of this is the fact that we are a purely text-based publication, yes, but a better reason is right there in the masthead. This is Hackaday, and for more t... | 71 | 26 | [
{
"comment_id": "4500281",
"author": "netbeard",
"timestamp": "2018-04-23T14:20:29",
"content": "I was just about to snarkily post that words and language exist to communicate ideas, and then caught your jab at the word “hack” at the very end.Well played Benchoff….well played…",
"parent_id": nul... | 1,760,374,396.527415 | ||
https://hackaday.com/2018/04/23/spoofing-cell-networks-with-a-usb-to-vga-adapter/ | Spoofing Cell Networks With A USB To VGA Adapter | Tom Nardi | [
"Radio Hacks",
"Slider",
"Software Hacks"
] | [
"osmo-fl2k",
"RTL-SDR",
"sdr",
"usb",
"vga"
] | RTL-SDR brought cheap and ubiquitous Software Defined Radio (SDR) to the masses, opening up whole swaths of the RF spectrum which were simply unavailable to the average hacker previously. Because the RTL-SDR supported devices were designed as TV tuners, they had no capability to transmit. For the price they are still a... | 85 | 29 | [
{
"comment_id": "4499970",
"author": "Saabman",
"timestamp": "2018-04-23T11:18:16",
"content": "As things like this become more widespread. Security of online transactions becomes impossible for the average user. Will people stop using online services and go back to face to face transactions – is th... | 1,760,374,396.841215 | ||
https://hackaday.com/2018/04/23/the-simplest-possible-diy-ultrasonic-levitator/ | The Simplest Possible DIY Ultrasonic Levitator | Elliot Williams | [
"hardware"
] | [
"diy",
"HC-SR04",
"how-to",
"ultrasonic levitation"
] | We thought that making things levitate in mid-air by the power of sound was a little bit more like magic, or at least required fancy equipment. It turns out that you can do it yourself easily enough with parts that any decent hacker’s closet should have in abundance: a motor-driver IC, two ultrasonic distance pingers, ... | 12 | 5 | [
{
"comment_id": "4499907",
"author": "RoGeorge",
"timestamp": "2018-04-23T10:31:18",
"content": "Wow, need to try this!It’s almost unbelievable that it can still work at such low ultrasounds power.O.o",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4499920",
... | 1,760,374,397.063405 | ||
https://hackaday.com/2018/04/22/remote-control-of-clocks-is-easy-as-pi/ | Remote Control Of Clocks Is Easy As Pi | Kristina Panos | [
"Raspberry Pi"
] | [
"ir",
"lirc",
"Raspberry Pi Zero W",
"remote control",
"timers"
] | [Fatjedi007] recently acquired three programmable boxing gym-type clocks to help his developmentally disabled clients manage their time. The plan was to have timers of varying lengths fire at preset times throughout the day, with the large displays providing a view from anywhere. Unfortunately, the clocks were not near... | 16 | 6 | [
{
"comment_id": "4499606",
"author": "Erik Johansson",
"timestamp": "2018-04-23T07:31:12",
"content": "I’m all for microsecond precision on wall clocks, just open up port 123 for connections from the local network and rate limit it if you are scared of something, or just fetch the time someother wa... | 1,760,374,397.013857 | ||
https://hackaday.com/2018/04/22/an-fm-transceiver-from-an-unexpected-chip/ | An FM Transceiver From An Unexpected Chip | Jenny List | [
"Radio Hacks"
] | [
"fm",
"FM transceiver",
"fm transmitter",
"radio",
"Si4720",
"Si47xx",
"Silicon Labs",
"transceiver"
] | The Si47xx series of integrated circuits from Silicon Labs is a fascinating series of consumer broadcast radio products, chips that apply SDR technologies to deliver a range of functions that were once significantly more complex, with minimal external components and RF design trickery. [Kodera2t] was attracted to one ... | 20 | 7 | [
{
"comment_id": "4499000",
"author": "rnjacobs",
"timestamp": "2018-04-23T03:06:56",
"content": "Years ago I did a commercial product using the Si4731. It was before the digital TV transition, so I snuck in the ability to receive audio from NTSC TV channels 3, 4, 5, and 6.I’m not clear exactly why S... | 1,760,374,396.964569 | ||
https://hackaday.com/2018/04/22/hackaday-links-april-22-2018/ | Hackaday Links: April 22, 2018 | Brian Benchoff | [
"Hackaday Columns",
"Hackaday links"
] | [
"Boards of Canada",
"crypto",
"defcon",
"hamvention",
"multicolor PCB",
"sparkfun"
] | Eagle 9 is out
. Autodesk is really ramping up the updates to Eagle, so much so it’s becoming
annoying
. What are the cool bits this time? Busses have been improved, which is great because I’ve rarely seen anyone use busses in Eagle. There’s a new pin breakout thingy that automagically puts green lines on your pins. Th... | 20 | 9 | [
{
"comment_id": "4498521",
"author": "Robert Mateja",
"timestamp": "2018-04-22T23:30:12",
"content": "Same as lapel pinshttps://www.youtube.com/watch?v=BwaUPP44V-E",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4498534",
"author": "Darren Blaxcell",
... | 1,760,374,396.900947 | ||
https://hackaday.com/2018/04/22/counting-without-transistors/ | Counting Without Transistors | Brian Benchoff | [
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"binary counter",
"numitron"
] | The Hackaday Prize is all about Building Hope. We want to see hardware creators change the world with microcontrollers and breadboards. That’s a noble goal, but it also doesn’t mean you can’t have fun. That’s exactly what [Yann] is doing with a pile of surplus Soviet components, a bunch of bodge wire, and exactly zero ... | 29 | 8 | [
{
"comment_id": "4498153",
"author": "Yann Guidon / YGDES",
"timestamp": "2018-04-22T20:20:54",
"content": "Yay ! and it’s almost ready for the first round of the HaD Prize :-D",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4498155",
"author": "Yann Guidon... | 1,760,374,397.577817 | ||
https://hackaday.com/2018/04/22/fail-of-the-week-the-spot-welder-upgrade-that-wasnt/ | Fail Of The Week: The Spot Welder Upgrade That Wasn’t | Dan Maloney | [
"Fail of the Week",
"Hackaday Columns",
"Tool Hacks"
] | [
"ampacity",
"copper",
"current",
"lamination",
"microwave oven transformer",
"MOT",
"secondary",
"spot welder"
] | Even when you build something really, really nice, there’s always room for improvement, right? As it turns out for
this attempted upgrade to a DIY spot welder
, not so much.
You’ll no doubt recall [Mark Presling]’s
remarkably polished and professional spot welder build
that we featured some time ago. It’s a beauty, wit... | 28 | 13 | [
{
"comment_id": "4497781",
"author": "Menga",
"timestamp": "2018-04-22T18:03:35",
"content": "The secondary will have less resistance, definetly, also disipate heat more quickly, but withour a way to measure the output curretn, he cannot know if the efficiency improve or not.",
"parent_id": null... | 1,760,374,397.500925 | ||
https://hackaday.com/2018/04/22/when-detecting-lines-is-harder-than-expected/ | When Detecting Lines Is Harder Than Expected | Donald Papp | [
"Software Hacks"
] | [
"cad",
"footprints",
"KiCAD",
"line detection",
"part generation"
] | [Conor Patrick] is no stranger to hardware development, and he’s had an interesting project for the past few months. He’s attempting to create
a tool to convert images of technical drawings (such as footprints for electronic components) into digital formats
that can be imported into other tools. This could automate tur... | 18 | 11 | [
{
"comment_id": "4497208",
"author": "Ostracus",
"timestamp": "2018-04-22T14:44:40",
"content": "The best kind of problem is the one that never has to rise in the first place.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4497245",
"author": "plinth",
... | 1,760,374,397.630424 | ||
https://hackaday.com/2018/04/22/guerillaclock-could-save-this-city-thousands/ | GuerillaClock Could Save This City Thousands | Bryan Cockfield | [
"Transportation Hacks"
] | [
"api",
"bus",
"clock",
"local government",
"mass transit",
"raspberry pi",
"stop",
"train",
"transportation",
"Zero W"
] | They say necessity is the mother of invention. But if the thing you need has already been invented but is extremely expensive, another mother of invention might be budget overruns. That was the case when [klinstifen]’s local government decided to put in countdown clocks at bus stops, at a whopping $25,000 per clock. Th... | 32 | 10 | [
{
"comment_id": "4496400",
"author": "Saabman",
"timestamp": "2018-04-22T11:09:24",
"content": "The reason governments are charged much more than the normal price is to cover the inane levels of bureaucracy involved in each sale and of then the protection money that needs to be paid back to the gove... | 1,760,374,397.70089 | ||
https://hackaday.com/2018/04/22/blueprints-make-it-easy-to-make-some-alexa-skills/ | Blueprints Make It Easy To Make (Some) Alexa Skills | Al Williams | [
"Software Development",
"Software Hacks"
] | [
"alexa",
"amazon",
"Skill"
] | If you can code, you can create an Alexa skill — the programs that allow an Amazon Echo or similar device interact with you. What if you can’t code or you are just too lazy to do all the setup? Amazon now has
Blueprints
that can help anyone make a skill. The only problem is the skills you can create are pretty limited.... | 13 | 6 | [
{
"comment_id": "4496595",
"author": "Dan",
"timestamp": "2018-04-22T12:04:36",
"content": "Having tried to develop a basic Skill in the past, I was excited when I heard about this. Then I used it…All of these Skills Blueprints are little more than templates that allow you to manually create strings... | 1,760,374,398.269099 | ||
https://hackaday.com/2018/04/21/computers-may-someday-need-a-drink/ | Computers May Someday Need A Drink | Brian McEvoy | [
"computer hacks",
"hardware"
] | [
"Chemistry",
"cooling",
"evaporation",
"insects",
"meniscus",
"micromachining",
"micromanufacturing",
"physics",
"swamp cooler"
] | “We want to put water right into your processor.” If that statement makes you sweat, that is good. Sweating is what we’re talking about, but it’s more involved than adding some water like a potted plant. Sweating works naturally by allowing liquid to evaporate, and that phase change is endothermic which is why it feels... | 16 | 7 | [
{
"comment_id": "4495522",
"author": "NiHaoMike",
"timestamp": "2018-04-22T05:16:26",
"content": "I remember seeing a water cooled PC that used a miniature evaporative cooling tower.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4496191",
"author": ... | 1,760,374,398.416315 | ||
https://hackaday.com/2018/04/21/3d-drone-video/ | 3D Drone Video | Al Williams | [
"drone hacks"
] | [
"3d fpv",
"drone",
"FPV",
"quadcopter",
"sync separator"
] | If you enjoy flying quadcopters, it is a good bet that you’ll have a drone with a camera. It used to be enough to record a video for later viewing, but these days you really want to see a live stream. The really cool setups have goggles so you can feel like you are actually in the cockpit. [Andi2345] decided to go one ... | 10 | 6 | [
{
"comment_id": "4495333",
"author": "Paul",
"timestamp": "2018-04-22T03:46:44",
"content": "Hmm. True, depth perception from two closely-spaced cameras mounted on a single quadcopter might be lousy at any significant altitude…But, heck, with the formation-flight capability already demonstrated in ... | 1,760,374,398.938783 | ||
https://hackaday.com/2018/04/21/got-a-burning-idea-for-an-emf-camp-presentation-nows-your-chance/ | Got A Burning Idea For An EMF Camp Presentation? Now’s Your Chance! | Jenny List | [
"cons"
] | [
"electromagnetic field",
"electromagnetic field camp",
"emf",
"EMF camp",
"EMF camp 2018"
] | Sometimes the world of tech conference presentations can seem impossibly opaque, a place in which there appears to be an untouchable upper echelon of the same speakers who pop up at conference after conference. Mere mortals can never aspire to join them and are destined to forever lurk in the shadows, their killer talk... | 8 | 4 | [
{
"comment_id": "4494393",
"author": "Ostracus",
"timestamp": "2018-04-22T00:37:28",
"content": "” They list a few previous topics, from genetic modification to electronics, blacksmithing to high-energy physics, reverse engineering to lock picking, computer security to crocheting, and quadcopters to... | 1,760,374,398.888009 | ||
https://hackaday.com/2018/04/21/roomba-riding-beer-butlers-will-serve-us-all/ | Roomba-Riding Beer Butlers Will Serve Us All | Kristina Panos | [
"Beer Hacks",
"Robots Hacks",
"The Hackaday Prize"
] | [
"2018 Hackaday Prize",
"beer",
"beer delivery",
"beer robot",
"robot",
"roomba"
] | [Josh] isn’t one to refuse a challenge, especially when robots are involved. The latest dare from friends and family?
Build a beer robot that can bring beverages at everyone’s beck and call
.
The build consists of two main parts: the refrigerated cooler and the butler part, which comes courtesy of a Roomba Discovery fr... | 7 | 7 | [
{
"comment_id": "4493867",
"author": "Dion",
"timestamp": "2018-04-21T21:12:07",
"content": "Most people would have been like ‘sh#t – peltier doesn’t really work’ – *bin* (I know I did). Building custom evaporators and condensers is next level. Super cool.",
"parent_id": null,
"depth": 1,
... | 1,760,374,398.459037 | ||
https://hackaday.com/2018/04/21/tracktorino-shields-you-from-poor-interfaces/ | Tracktorino Shields You From Poor Interfaces | Brian McEvoy | [
"Musical Hacks"
] | [
"arduino",
"Arduino Uno",
"DAW",
"digital audio",
"digital audio workstation",
"Laser cutting",
"midi",
"music",
"shield",
"traktor",
"uno"
] | On-screen controls in a digital audio workstation expand the power of a DJ or musician, but they are not intuitive for everyone. The tactility of buttons, knobs, sliders and real-world controls feels nothing like using a mouse, trackpad, or even a touchscreen. Unfortunately, devices meant to put control into a DJs hand... | 8 | 6 | [
{
"comment_id": "4493790",
"author": "Steven Clark",
"timestamp": "2018-04-21T20:13:34",
"content": "I spy with my little eye the smaller version of those Bourns slider pots. Not cheap, but very fun.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4493845",
... | 1,760,374,398.559744 | ||
https://hackaday.com/2018/04/21/building-a-pov-display-on-a-pc-fan/ | Building A POV Display On A PC Fan | Richard Baguley | [
"Arduino Hacks",
"LED Hacks"
] | [
"persistance of vision",
"POV"
] | We’ve covered plenty of persistence of vision (POV) displays before, but this one from [Vadim] is rather fun:
it’s built on top of a PC fan
. He’s participating in a robot building competition soon and wanted to have a POV display. So, why not kill two birds with one stone and build the display onto a fan that could al... | 18 | 6 | [
{
"comment_id": "4492993",
"author": "Ren",
"timestamp": "2018-04-21T15:01:36",
"content": "I like it when I click on a video link and find it is only around 2 minutes and not 29 minutes long!",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4493090",
... | 1,760,374,398.516697 | ||
https://hackaday.com/2018/04/21/nerf-blaster-goes-next-level-with-propane-power/ | Nerf Blaster Goes Next-level With Propane Power | Ben James | [
"Toy Hacks"
] | [
"chamber",
"combustion",
"mod",
"nerf",
"peter sripol",
"propane"
] | There are no shortage of Nerf gun mods out there. From simply upgrading springs to removing air restrictors, the temptation of one-upping your opponents in a Nerf war speaks to many!
Not content with such lowly modifications [Peter Sripol] decided that his blaster needed to
see some propane action
.
[Peter] completely ... | 14 | 4 | [
{
"comment_id": "4492850",
"author": "nino",
"timestamp": "2018-04-21T12:40:27",
"content": "“some taser circuitry”“boom”, “mission accomplished” … the world is so simple !",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4497037",
"author": "Megol",
... | 1,760,374,398.618116 | ||
https://hackaday.com/2018/04/21/fast-led-matrix-graphics-for-the-esp32/ | Fast LED Matrix Graphics For The ESP32 | Jenny List | [
"Microcontrollers"
] | [
"displays",
"ESP32",
"led",
"led matrix"
] | Many of you will have experimented with driving displays from your microcontroller projects, and for most people that will mean pretty simple status information for which you’d use standard libraries and not care much about their performance. If however any of you have had the need for quickly-updating graphics such as... | 18 | 4 | [
{
"comment_id": "4492593",
"author": "ijadi",
"timestamp": "2018-04-21T08:38:44",
"content": "Isn’t it ironic that slavic engineers (whom the “west” considers as subhumans and code monkeys) make better use of western technology than western “engineers”?",
"parent_id": null,
"depth": 1,
"... | 1,760,374,398.781141 | ||
https://hackaday.com/2018/04/20/life-on-contract-lowering-your-cost-without-dropping-your-price/ | Life On Contract: Lowering Your Cost Without Dropping Your Price | Donald Papp | [
"Business",
"Featured",
"Hackaday Columns"
] | [
"advice",
"business",
"consulting",
"cost of goods",
"costs",
"Freelancing",
"life on contract",
"pricing"
] | Last time in
Life on Contract
, I discussed
ways to figure out a starting point on how much to charge
for your services. However, sometimes you and a client may wish to work together but for some reason they cannot (or do not wish to) pay what you have decided to charge. If
you are inexperienced, it can be tempting to ... | 17 | 11 | [
{
"comment_id": "4491440",
"author": "alfcoder",
"timestamp": "2018-04-20T14:21:36",
"content": "thanks for this kind of information, especially because lot of engineer is not a business guru :) the basic idea is that the customer wants the product to be ready immediately and for zero price and the ... | 1,760,374,398.84539 | ||
https://hackaday.com/2018/04/20/this-vapour-deposition-chamber-isnt-vapourware/ | This Vapour Deposition Chamber Isn’t Vapourware | Jenny List | [
"Science"
] | [
"aluminium",
"aluminum",
"mirror",
"vapor deposition",
"vapour deposition"
] | If you are an astronomer with an optical reflecting telescope, the quality of your mirror is one of your most significant concerns. Large observatories will therefore often have on-site vapour deposition plants to revitalise their reflectors by depositing a fresh layer of aluminium upon them. You might think that such ... | 22 | 8 | [
{
"comment_id": "4491324",
"author": "jafinch78",
"timestamp": "2018-04-20T11:26:39",
"content": "Yeah, wow… that sure beats silvering mirrors big time. Even for making electronic components would be sweet.",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "44913... | 1,760,374,398.994572 | ||
https://hackaday.com/2018/04/20/tesla-coil-uses-vacuum-tube/ | Tesla Coil Uses Vacuum Tube | Al Williams | [
"classic hacks"
] | [
"tesla coil",
"vacuum tube"
] | What do you do when you find a 5 kW transmitting tube in your local electronics store? If you are [TannerTech], you build a
vacuum tube tesla coil
. This isn’t the usual little wimpy coil, but a big bad boy that would look at home in an old horror movie.
The first power up was a bit anticlimactic, although it was worki... | 16 | 8 | [
{
"comment_id": "4491305",
"author": "Redhatter (VK4MSL)",
"timestamp": "2018-04-20T10:44:45",
"content": "~455kHz resonant frequency…Every HAM, CB operator and medium wave/short wave listener with a conventional superhet receiver within a 1km radius of you must absolutelyloveyou when that thing is ... | 1,760,374,399.803185 | ||
https://hackaday.com/2018/04/19/turning-8-track-player-into-a-walkman/ | Turning 8-Track Player Into A Walkman | Steven Dufresne | [
"Portable Audio Hacks"
] | [
"8-track",
"audio tape",
"headphone jack",
"headphones"
] | Following time backward, for portable music we’ve had iPods, CDs, and cassette tapes which we played using small Walkmans around the size of a cigarette box. And for a brief time before that, in the 1960s and 1970s, we had 8-track tapes. These were magnetic tapes housed in cases around the size of a large slice of brea... | 21 | 13 | [
{
"comment_id": "4490932",
"author": "foxpup",
"timestamp": "2018-04-20T05:06:24",
"content": "You Da Man!!!! (Absolutely Love It)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4490957",
"author": "FastEddy",
"timestamp": "2018-04-20T05:30:09",
"... | 1,760,374,399.0562 | ||
https://hackaday.com/2018/04/19/play-chess-against-a-ghost/ | Play Chess Against A Ghost | Bryan Cockfield | [
"Games"
] | [
"board",
"chess",
"electromagnet",
"game",
"ghost",
"raspberry pi",
"robot",
"Stockfish"
] | While chess had long been a domain where humans were superior to computers, the balance has shifted quite substantially in the computers’ favor. But the one thing that humans still have control over is the pieces themselves. That is, until now. A group has built a robot that
both uses a challenging chess engine, and ca... | 19 | 12 | [
{
"comment_id": "4490803",
"author": "jacques1956",
"timestamp": "2018-04-20T02:15:40",
"content": "a noisy ghost.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4490808",
"author": "Redhatter (VK4MSL)",
"timestamp": "2018-04-20T02:22:35",
... | 1,760,374,399.855855 | ||
https://hackaday.com/2018/04/19/marquee-display-uses-six-dozen-surplus-vfd-tubes-to-great-effect/ | Marquee Display Uses Six Dozen Surplus VFD Tubes To Great Effect | Dan Maloney | [
"clock hacks",
"Misc Hacks"
] | [
"clock",
"driver",
"IV-25",
"marquee",
"matrix",
"pixel",
"scrolling",
"SN77815",
"surplus",
"vacuum fluorescent display",
"vfd"
] | The quest to repurpose surplus parts into new and interesting displays never ends, it seems. And the bigger the display, the better, with extra points for using some really obscure part, like
these surplus Russian vacuum-fluorescent tubes turned into a marquee display
.
As [tonyp7] freely admits, this is a pet project ... | 6 | 2 | [
{
"comment_id": "4490718",
"author": "Clara",
"timestamp": "2018-04-20T00:27:37",
"content": "If the goal was to make horizontally scrolling text, orienting the tubes vertically would have made more sense. The gaps make this hard to read unless I look at just one of the six units.",
"parent_id"... | 1,760,374,399.130228 | ||
https://hackaday.com/2018/04/19/arduino-revives-junkyard-laser-cutter/ | Arduino Revives Junkyard Laser Cutter | Tom Nardi | [
"Arduino Hacks",
"Laser Hacks"
] | [
"arduino nano",
"co2 laser",
"grbl",
"laser cutter",
"LaserWeb",
"restoration"
] | Some people have all the luck. [MakerMan] writes in to
gloat
tell us about a recent trip to the junkyard where
he scored a rather serious looking laser cutter
. This is no desktop-sized K40 we’re talking about here; it weighs in at just under 800 pounds (350 Kg), and took a crane to deliver the beast to his house. But ... | 30 | 10 | [
{
"comment_id": "4490421",
"author": "Ren",
"timestamp": "2018-04-19T20:16:51",
"content": "I could’ve done it with a 555…(not really!)Lucky Stiff!B^)",
"parent_id": null,
"depth": 1,
"replies": []
},
{
"comment_id": "4490425",
"author": "Matt Cramer",
"timestamp": "2018-... | 1,760,374,399.486869 | ||
https://hackaday.com/2018/04/20/home-made-5-axis-cnc-head-is-a-project-to-watch/ | Home Made 5-Axis CNC Head Is A Project To Watch | Richard Baguley | [
"cnc hacks"
] | [
"3d printed",
"5 axis head",
"cnc",
"CNC mill"
] | [Reiner Schmidt] was tired of renting an expensive 5-axis CNC head for projects, so he decided to
build his own
. It’s still a work in progress, but he’s made remarkable progress so far. The project is called Bridge Boy, and it is designed to use a cheap DC rotary mill to cut soft materials like plastic, wood and the l... | 52 | 17 | [
{
"comment_id": "4492409",
"author": "TGT",
"timestamp": "2018-04-21T05:16:35",
"content": "This is freakin awesome. Definitely what 3d printers ought to be used for. I’m grabbing those plans for sure. These kinds of projects make machining accessable to many people who otherwise wouldn’t get to exp... | 1,760,374,399.627668 | ||
https://hackaday.com/2018/04/20/zippo-keeps-your-bits-safe/ | Zippo Keeps Your Bits Safe | Adam Fabio | [
"Tool Hacks"
] | [
"bits",
"EDC",
"Every Day Carry",
"screwdriver",
"zippo"
] | [Laura Kampf] found a new use for an old Zippo lighter by
turning it into a carrier for her screwdriver bits
. There are several multitools out there which can accept standard screwdriver bits. The problem is carrying those bits around. Leaving a few bits in your pocket is a recipe for pocket holes and missing bits.
[L... | 29 | 15 | [
{
"comment_id": "4492214",
"author": "Ostracus",
"timestamp": "2018-04-21T02:10:09",
"content": "My “1”s and “0”s feel safe.",
"parent_id": null,
"depth": 1,
"replies": [
{
"comment_id": "4492303",
"author": "Carl Smith",
"timestamp": "2018-04-21T03:03:44",
... | 1,760,374,399.690565 | ||
https://hackaday.com/2018/04/20/real-time-polarimetric-imager-from-1980s-tech/ | Real-Time Polarimetric Imager From 1980s Tech | Tom Nardi | [
"Portable Video Hacks",
"Science",
"Video Hacks"
] | [
"1980's",
"JVC KY-1900",
"polarimetric imagery",
"polarization",
"video camera"
] | It’s easy to dismiss decades old electronics as effectively e-waste. With the rapid advancements and plummeting prices of modern technology, most old hardware is little more than a historical curiosity at this point. For example, why would anyone purchase something as esoteric as 1980-era video production equipment in ... | 14 | 6 | [
{
"comment_id": "4491960",
"author": "rnjacobs",
"timestamp": "2018-04-20T23:19:40",
"content": "NTSC remains a 60Hz standard, not a 30Hz standard. It encodes a ≈440×480 image (typically visible: ≈400×450) every 1/60th of a second, and throws away half the vertical resolution prior to transmission. ... | 1,760,374,399.539972 | ||
https://hackaday.com/2018/04/20/a-polar-coordinate-cnc-plotter-even-descartes-could-love/ | A Polar Coordinate CNC Plotter Even Descartes Could Love | Dan Maloney | [
"cnc hacks"
] | [
"angle",
"FischerTechnik",
"plotter",
"polar",
"rotary",
"vector"
] | Take apart a few old DVD drives, stitch them together with cable ties, add a pen and paper, and you’ve got a simple CNC plotter. They’re quick and easy projects that are fun, but they do tend to be a little on the “plug and chug” side. But
a CNC plotter that uses polar coordinates?
That takes a little more effort.
The ... | 22 | 9 | [
{
"comment_id": "4491834",
"author": "ehrichweiss",
"timestamp": "2018-04-20T20:22:39",
"content": "I’m interested in how they calculate the polar coordinates. I’d like to see my GRBL get an upgrade if it’ll do the trick fast enough. Hell, I’d be willing to try to implement it in my Smoothie if it w... | 1,760,374,399.749377 |
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