hackaday.com Archives - 01 May 2016, Sunday

  • Home Made Diodes From Copper Oxide | Hackaday

    hackaday.com 01 May '16, 5pm

    We’re all familiar with semiconductor devices, and we should remember the explanation from high-school physics classes that they contain junctions between two types of semiconductor material. “N” type which in the for-schoolchildren explanation has a surplus of electrons, and “P” type...

  • Has Mankind Gone Too Far With Drone Fishing? | Hackaday

    hackaday.com 01 May '16, 8am

    This is slightly off topic but with the change of weather and its catastrophic dangers to food production in the long run which is already doing damage to California’s breadbasket of agriculture it seems likely that the huge area which has remained relatively untapped for artificial f...

  • Minimal 433 MHz Web Home Automation

    Minimal 433 MHz Web Home Automation | Hackaday

    hackaday.com 01 May '16, 7am

    How minimal can a decent home automation setup be? If you need an HTML frontend, you’re going to need a webserver. An ESP8266 will do the trick. And then you need to be able to control your electronics. The cheapest and easiest way to do that is with the ubiquitous 433 MHz remote-cont...

  • Lint And Dog Hair Supercapacitor | Hackaday

    hackaday.com 01 May '16, 5am

    He started with a home-made crucible that you maybe wouldn’t want to carry around in public as it bears more than a passing resemblance to a pipe bomb. Into that he packed his dog hair and lint, along with a generous helping of ammonia. An hour or two in a woodstove glowing red, and h...

  • Re-Capping An Ancient Apple PSU | Hackaday

    hackaday.com 30 Apr '16, 11pm

    It sometimes comes as a shock when you look at a piece of hardware that you maybe bought new and still consider to be rather high-tech, and realise that it was made before someone in their mid-twenties was born. It’s the moment from that Waylon Jennings lyric, about looking in the mir...

  • Is It A Stepper? Or Is It A Servo?

    Is It A Stepper? Or Is It A Servo? | Hackaday

    hackaday.com 30 Apr '16, 8pm

    Almost everyone who is involved with 3D printing thinks to themselves at some point, “this could all be done using a closed-loop system and DC motors”. Or at least everyone we know. There’s even one commercial printer out there that uses servo control, but because of this it’s not com...

  • Hacklet 105 – More Mind and Brain Hacks: A mind is a terrible thing to waste – but an awesome thing to hack. ...

    Hacklet 105 – More Mind and Brain Hacks | Hackaday

    hackaday.com 30 Apr '16, 5pm

    A mind is a terrible thing to waste – but an awesome thing to hack. We last visited brain hacks back in July of 2015 . Things happen fast on Hackaday.io. Miss a couple of days, and you’ll miss a bunch of great new projects, including some awesome new biotech hacks. This week, we’re ch...

  • Megaprocessor is a Macro Microprocessor | Hackaday

    hackaday.com 30 Apr '16, 3pm

    And kudos to his crazy Ninja skills to notch up just a few failed, bad solder joints, out of a total of over 250,000, and one dead transistor from among almost 42,000. A few cable crimping issues were the least of his troubles. The worst part was when he received a wrong batch of 4000...

  • Megaprocessor is a Macro Microprocessor | Hackaday

    hackaday.com 30 Apr '16, 3pm

    And kudos to his crazy Ninja skills to notch up just a few failed, bad solder joints, out of a total of over 250,000, and one dead transistor from among almost 42,000. A few cable crimping issues were the least of his troubles. The worst part was when he received a wrong batch of 4000...

  • Windows 95 On An Apple Watch | Hackaday

    hackaday.com 30 Apr '16, 2pm

    What happens if the slick user interface and tight iOS integration of your Apple Watch leave you wanting more? A real operating system, from the days when men were men and computers were big grey boxes! [Nick Lee] solved this unexpected problem with his Watch by getting a working copy...

  • Don’t Tempt the Demo Gods: Including a live technical demonstration as part of a...

    Don’t Tempt the Demo Gods | Hackaday

    hackaday.com 30 Apr '16, 11am

    Including a live technical demonstration as part of a presentation is a lot like walking a tightrope without a net. Which isn’t to say that we don’t do it — we just keep our fingers crossed and bring our lucky horseshoe. The demo gods have smote [Quinn] a mighty blow, in front of a cl...

  • Line Following Robot Trains Runners

    Line Following Robot Trains Runners | Hackaday

    hackaday.com 30 Apr '16, 8am

    Can your line following robot move faster than [Usain Bolt] who has been described as “The World’s Fastest Timed Human”? Puma, the athletic footwear, apparel and accessories company, created such a robot to help train their company sponsored athletes . The shoebox-sized robot exceeds ...

  • 1btn – an Open Source Dash: The availability of cheap radios, omni-present WiFi ...

    1btn – an Open Source Dash | Hackaday

    hackaday.com 30 Apr '16, 5am

    The availability of cheap radios, omni-present WiFi and powerful web services means the IoT wave is here to stay. Amazon got into the act with its “do only one thing” Dash button. But a more interesting solution would be an IoT “do it all” button. [Anand] has been working on his 1btn ...

  • Soda Fridge Hack to Fix a Lazy People Problem

    Soda Fridge Hack to Fix a Lazy People Problem | Hackaday

    hackaday.com 30 Apr '16, 2am

    [Paul] participated in a hackathon at work and created a hack to help solve what was ultimately a people problem. A soda fridge at work wasn’t getting refilled when empty. Instead of trying to make people less lazy, [Paul] went with making the fridge more needy. The first thing [Paul]...

  • The MakerBot Obituary | Hackaday

    hackaday.com 29 Apr '16, 11pm

    MakerBot sales were killing Stratasys sales. For every MakerBot sold, and there was A LOT of them, that was potentially one less uprint/dimension/fortus purchased. If you assume even 10% of MakerBots were purchased by companies who would have otherwise bought a dimension, that is some...

  • ESP8266 or MKR1000?

    ESP8266 or MKR1000? | Hackaday

    hackaday.com 29 Apr '16, 11pm

    If you are a regular Hackaday reader, you’ve probably seen plenty of ESP8266 projects. After all, the inexpensive device is a workhorse for putting a project on WiFi, and it works well. There is a processor onboard, but, most often, the onboard CPU runs a stock firmware that exposes a...

  • Six Years of Work and Rationale In A DIY Book Scanner Documented

    Six Years of Work and Rationale In A DIY Book Scanner Documented | Hackaday

    hackaday.com 29 Apr '16, 8pm

    [Daniel Reetz] spent six years working as a Disney engineer during the day and on his book scanner, the archivist at night. Some time last year, [Daniel] decided enough is enough, got married, and retired from the book scanner business. There’s a bit more to it than that, but before l...

  • Saving Lives with Open-Source Electrocardiography | Hackaday

    hackaday.com 29 Apr '16, 6pm

    A few months ago, MobilECG wowed us with a formidable electrocardiograph (ECG, also EKG) machine in the format of a business card, complete with an OLED display. We’ve seen business card hacks before, but that was the coolest. But that’s peanuts compared with the serious project that ...

  • Fail Of The Week: My 3D Printer Upgrade | Hackaday

    hackaday.com 29 Apr '16, 5pm

    After years of cutting my hands on the exposed threads of my Prusa Mendel i2, it was time for a long overdue upgrade. I didn’t want to just buy a new printer because it’s no fun. So, I decided to buy a new frame for my printer. I settled on the P3Steel, a laser cut steel version of th...

  • Japanese Lab Builds 5-Axis 3D Printer

    Japanese Lab Builds 5-Axis 3D Printer | Hackaday

    hackaday.com 29 Apr '16, 3pm

    A Japanese lab is investing some time in the possibilities of a 5-axis 3D printer . They show it printing using five axis as well as doing finish machining on a printed part. We’ve covered parts of why this is the right direction to go for 3D printing in another post . It looks like t...

  • Centennial Birthday of Claude E. Shannon the Math and EE Pioneer | Hackaday

    hackaday.com 29 Apr '16, 2pm

    Dr. Claude E. Shannon was born 100 years ago tomorrow. He contributed greatly to the fields of engineering, communications, and computer science but is not a well known figure, even to those in the field. However, his work touches us all many times each day. The network which delivere...

  • The Gerber Behind Gerber Files

    The Gerber Behind Gerber Files | Hackaday

    hackaday.com 29 Apr '16, 11am

    When we create a printed circuit board, the chances are these days that we’ll export it through our CAD package’s CAM tool, and send the resulting files to an inexpensive PCB fabrication house. A marvel of the modern age, bringing together computerised manufacturing, the Internet, and...

  • Connect All Your IoT Through Your Pi 3

    Connect All Your IoT Through Your Pi 3 | Hackaday

    hackaday.com 29 Apr '16, 8am

    If you’re playing Hackaday Buzzword Bingo , today is your lucky day! Because not only does this article contain “Pi 3” and “IoT”, but we’re just about to type “ESP8266” and “home automation”. Check to see if you haven’t filled a row or something… Seriously, though. If you’re running a...

  • Refreshable Braille Display and Braille Keyboard

    Refreshable Braille Display and Braille Keyboard | Hackaday

    hackaday.com 29 Apr '16, 5am

    [Vijay] has been working since 3 years on a Refreshable Braille Display but has only recently been able to make some substantial progress after teaming up with [Paul D’souza]. During his initial experiments, he used dot matrix printer heads, but the current version uses tiny vibration...

  • Ping Pong Spectrum Analyzer | Hackaday

    hackaday.com 29 Apr '16, 1am

    A spectrum analyzer is a pretty useful tool for working with signals where the size of the frequency components matter. Usually, the display is a screen. Sometimes, you see it done with LEDs. [Mag Laboratories] did it with ping pong balls . The device uses a processor to calculate a F...

  • Colin Furze Flies the Dangerous Skies

    Colin Furze Flies the Dangerous Skies | Hackaday

    hackaday.com 28 Apr '16, 10pm

    To quote our tipster: “Furze is my hero … You just need to know how to weld and have zero consideration for your personal well-being.” We’re not exactly sure that he has no consideration, but [Colin Furze] definitely pulls off some dangerous hacks. This time? Two-engine hoverbike. We ...

  • Forty-Year-Old Arcade Game Reveals Secrets of Robot Path Planning

    Forty-Year-Old Arcade Game Reveals Secrets of Robot Path Planning | Hackaday

    hackaday.com 28 Apr '16, 8pm

    What’s to be gained from reverse engineering a four-decade-old video game? As it turns out, quite a lot, and as you’ll learn from [Norbert]’s recent talk at the ViennaJS meetup , it’s not just about bringing a classic back to life. The game in question is Kee Game’s Sprint 2 , a monoc...

  • Up-Close and Personal with Laser Cuts

    Up-Close and Personal with Laser Cuts | Hackaday

    hackaday.com 28 Apr '16, 5pm

    The beam of the laser is focused to a spot that *should be* at the top surface of the material. This means that the beam is a cone that comes to a point at the surface, and spreads out below. When you cut out a circle (or hole), the circumference of the top of the hole will be smaller...

  • 128 LEDs, 5 Buttons, IR Comm, and a Few Hours: What Could You Create? | Hackaday

    hackaday.com 28 Apr '16, 3pm

    The platform used for the Hackaday | Belgrade badge is the creation of Voja Antonic. It is a single PCB with 8×16 LED display, four directional buttons plus a fifth user button, and an IR receiver with IR LED for transmitting. The PIC18LF25K50 (which were donated by Microchip for the ...

  • Robot Beats Piano Tiles | Hackaday

    hackaday.com 28 Apr '16, 3pm

    Ok, first – it’s not a marketing gimmick.. you’re totally jaded :) I built this after my 7 year old daughter showed me Piano Tiles and I figured I could beat it with a robot. There’s an iPhone 6+ overhead that does image processing – this runs a custom app using the GPU based on Apple...