hackaday.com Archives - 23 April 2017, Sunday

  • Gawkerbot is Watching You

    Gawkerbot is Watching You | Hackaday

    hackaday.com 23 Apr '17, 11am

    While sick with the flu a few months ago, [CroMagnon] had a vision. A face with eyes that would follow you – no matter where you walked in the room. He brought this vision to life in the form of Gawkerbot. This is no static piece of art. Gawkerbot’s eyes slowly follow you as you walk ...

  • A Cool Mist that Dries Your Clothes | Hackaday

    hackaday.com 23 Apr '17, 8am

    This one is both wild enough to be confused as a conspiracy theory and common sense enough to be the big solution staring us in the face which nobody realized. Until now. Oak Ridge National Laboratory and General Electric (GE), working on a grant from the US Department of Energy (DOE)...

  • Retrofitting An Amstrad CPC6128 With A Floppy Emulator

    Retrofitting An Amstrad CPC6128 With A Floppy Emulator | Hackaday

    hackaday.com 23 Apr '17, 5am

    In the home computer boom of 1980s Britain, you could describe Amstrad as the third-placed home-grown player after Sinclair and Acorn. If you were a computer enthusiast kid rather than a gamer kid, you wanted Acorn’s BBC Micro, your parents bought you Sinclair’s ZX Spectrum because it...

  • Ultrasonic Raspberry Pi Piano

    Ultrasonic Raspberry Pi Piano | Hackaday

    hackaday.com 23 Apr '17, 2am

    Cheap stuff gets our creative juices flowing. Case in point? [Andy Grove] built an eight-sensor HC-SR04 breakout board, because the ultrasonic distance sensors in question are so affordable that a hacker can hardly avoid ordering them by the dozen. He originally built it for robotics,...

  • How Many Watts Are You Using?

    How Many Watts Are You Using? | Hackaday

    hackaday.com 22 Apr '17, 11pm

    One of the best smart home hacks is implementing an energy monitor of some kind. It’s easy enough to say that you’re trying to save energy, but without the cold hard data, it’s just talk. Plus, it’s easy and a great way to build up something DIY that the whole family can use. [Bogdan]...

  • Hackaday Prize Entry: A Complete Suite Of Biomedical Sensors

    Hackaday Prize Entry: A Complete Suite Of Biomedical Sensors | Hackaday

    hackaday.com 22 Apr '17, 8pm

    More of an enabling platform than a complete project, [Orlando Hoilett]’s shield design incorporates a lot of the sensors we’ve seen before. The two main modalities are photoplethysmography, which uses the MAX30101 to sense changes in blood volume and oxygen saturation by differential...

  • X-Ray Imaging Camera Lens Persuaded to Join Micro Four Thirds Camera | Hackaday

    hackaday.com 22 Apr '17, 5pm

    Anyone who is into photography knows that the lenses are the most expensive part in the bag. The larger the aperture or f-stop of the lens, the more light is coming in which is better for dimly lit scenes. Consequently, the price of the larger glass can burn a hole in one’s pocket. [A...

  • X-Ray Imaging Camera Lens Persuaded to Join Micro Four Thirds Camera | Hackaday

    hackaday.com 22 Apr '17, 5pm

    Anyone who is into photography knows that the lenses are the most expensive part in the bag. The larger the aperture or f-stop of the lens, the more light is coming in which is better for dimly lit scenes. Consequently, the price of the larger glass can burn a hole in one’s pocket. [A...

  • Little Laser Light Show is Cleverly Packaged, Cheap to Build

    Little Laser Light Show is Cleverly Packaged, Cheap to Build | Hackaday

    hackaday.com 22 Apr '17, 2pm

    We’re suckers for any project that’s nicely packaged, but an added bonus is when most of the components can be sourced cheaply and locally. Such is the case for this little laser light show , housed in electrical boxes from the local home center and built with stuff you probably have ...

  • Go Wireless with This DIY Laser Ethernet Link | Hackaday

    hackaday.com 22 Apr '17, 11am

    Most of us have Ethernet in our homes today. The real backbones of the Internet though, use no wires at all. Optical fibers carry pulses of light across the land, under the sea, and if you’re lucky, right to your door. [Sven Brauch] decided to create an optical link . He didn’t have a...

  • The Internet of Rice Cookers

    The Internet of Rice Cookers | Hackaday

    hackaday.com 22 Apr '17, 11am

    You’d be forgiven for thinking this was going to be an anti-IoT rant: who the heck needs an IoT rice cooker anyway? [Microentropie], that’s who. His rice cooker, like many of the cheapo models, terminates heating by detecting a temperature around 104° C, when all the water has boiled ...

  • [Hari] Prints an Awesome Spider Robot

    [Hari] Prints an Awesome Spider Robot | Hackaday

    hackaday.com 22 Apr '17, 8am

    Although we have strong suspicions that the model’s designer failed entomology, this spider robot is very cool. [Hari Wiguna] made one, and is justifiably thrilled with the results. (Watch his summary on YouTube embedded below.) Thanks to [Regis Hsu]’s nice design , all [Hari] had to ...

  • An 8-Bit Transport Triggered Architecture CPU in TTL | Hackaday

    hackaday.com 22 Apr '17, 5am

    When we are introduced to the internals of a microprocessor, it is most likely that we will be shown something like one of the first generation of 8-bit CPUs from the 1970s. There will be the familiar group of registers and counters, an arithmetic and logic unit (ALU), and an instruct...

  • 3D Printing Glass Using Stereolithography

    3D Printing Glass Using Stereolithography | Hackaday

    hackaday.com 22 Apr '17, 1am

    3D printing is one of the best things that has happened to the maker community in recent years, however the resulting output has always been prone to damage when used in high temperature applications or places where the part may be exposed to corrosive chemicals. In a recent paper tit...

  • IoT Security is Hard: Here’s What You Need to Know | Hackaday

    hackaday.com 22 Apr '17, 12am

    Internet of Things devices are being ravenously hunted for sport right now. You need to be vigilant and make sure your devices don’t fall foul to attacks like brickerbot or become a part of the latest IoT botnet . There will be more attacks like this to come in the future. Get ahead o...

  • Building a Metalworking Vise, Layer by Layer

    Building a Metalworking Vise, Layer by Layer | Hackaday

    hackaday.com 21 Apr '17, 11pm

    Machine shop wisdom says the lathe is the king of machine tools. We ascribe to that belief, although the common aphorism that the lathe is the only tool that can make copies of itself seems a bit of a stretch. But in the shadow of the almighty lathe is a tool without which even the si...

  • Smart Child Seat Aims to Prevent Tragedy

    Smart Child Seat Aims to Prevent Tragedy | Hackaday

    hackaday.com 21 Apr '17, 8pm

    For most of us, a memory lapse is as harmless as forgetting to bring the garbage to the curb, or maybe as expensive as leaving a cell phone and cup of coffee on the roof of the car before driving off. But when the toddler sleeping peacefully in the car seat slips your mind in the park...

  • Hackaday Prize Entry: Portable LED Flash For Photography | Hackaday

    hackaday.com 21 Apr '17, 6pm

    By this point in time, you might be familiar with LEDs as flash units from your cellphone. However, [Yann] is taking this up a notch. The build is based around 100W LED modules, which obviously can pump out a lot of light. The interesting part of the build is its dual nature. The LEDs...

  • Ask Hackaday: Why Did Modular Smart Phones Fail? | Hackaday

    hackaday.com 21 Apr '17, 5pm

    What the phone with the one at a time modules for big speakers, high quality camera etc needs is a slider keyboard module. What’s done away with real keyboards on phones is not lack of demand, it’s that the manufacturers just would never put keyboards on their *best* phones with the h...

  • Ask Hackaday: Why Did Modular Smart Phones Fail? | Hackaday

    hackaday.com 21 Apr '17, 5pm

    What the phone with the one at a time modules for big speakers, high quality camera etc needs is a slider keyboard module. What’s done away with real keyboards on phones is not lack of demand, it’s that the manufacturers just would never put keyboards on their *best* phones with the h...

  • Do Something Constructive Tomorrow

    Do Something Constructive Tomorrow | Hackaday

    hackaday.com 21 Apr '17, 4pm

    This Saturday is a great day to change the world. It’s Earth Day. There’s a National March for Science where millions will demand evidence-based change. We’re doing our own thing. We’re leading a World Create Day , where hackers gather ’round the soldering iron and find solutions to p...

  • Automated Parts Counter Helps Build a Small Business

    Automated Parts Counter Helps Build a Small Business | Hackaday

    hackaday.com 21 Apr '17, 3pm

    We love to see projects undertaken for the pure joy of building something new, but to be honest those builds are a dime a dozen around here. So when we see a great build that also aims to enhance productivity and push an entrepreneurial effort along, like this automated small parts co...

  • IoT Security is Hard: Here’s What You Need to Know | Hackaday

    hackaday.com 21 Apr '17, 2pm

    Security for anything you connect to the internet is important. Think of these devices as doorways. They either allow access to services or provides services for someone else. Doorways need to be secure — you wouldn’t leave your door unlocked if you lived in the bad part of a busy cit...

  • Simple Scanner Finds the Best WiFi Signal | Hackaday

    hackaday.com 21 Apr '17, 11am

    Want to know which way to point your WiFi antenna to get the best signal? It’s a guessing game for most of us, but a quick build of a scanning WiFi antenna using mostly off-the-shelf components could point you in the right direction. With saturation WiFi coverage in most places these ...

  • Simple Scanner Finds the Best WiFi Signal | Hackaday

    hackaday.com 21 Apr '17, 11am

    Want to know which way to point your WiFi antenna to get the best signal? It’s a guessing game for most of us, but a quick build of a scanning WiFi antenna using mostly off-the-shelf components could point you in the right direction. With saturation WiFi coverage in most places these ...

  • Put Plasma to Work with this Basic Toolkit | Hackaday

    hackaday.com 21 Apr '17, 8am

    The “scariac” is not an autotransformer, but a liquid rheostat. The reason we like to use variable autotransformers instead of rheostats, or resistive control in general, is because rheostats dump the excess voltage as heat; the scariac is a big step backwards for most applications wh...

  • Budget Astrophotography With A Raspberry Pi

    Budget Astrophotography With A Raspberry Pi | Hackaday

    hackaday.com 21 Apr '17, 5am

    New to astrophotography, [Jason Bowling] had heard that the Raspberry Pi’s camera module could be used as a low-cost entry into the hobby. Having a Raspberry Pi B+ and camera module on hand from an old project, he dove right in, detailing the process for any other newcomers. Gingerly ...

  • FlowCode Graphical Programming | Hackaday

    hackaday.com 21 Apr '17, 2am

    If you’ve ever been curious if there’s a way to program microcontrollers without actually writing software, you might be interested in FlowCode. It isn’t a free product, but there is a free demo available. [Web learning] did a demo of programming a Nucleo board using the system . You ...

  • New Part Day: Very Cheap LIDAR | Hackaday

    hackaday.com 20 Apr '17, 11pm

    Self-driving cars are, apparently, the next big thing. This thought is predicated on advancements in machine vision and cheaper, better sensors. For the machine vision part of the equation, Nvidia, Intel, and Google are putting out some interesting bits of hardware. The sensors, thoug...

  • Half Baked IoT Stove Could Be Used As A Remote Controlled Arson Device | Hackaday

    hackaday.com 20 Apr '17, 8pm

    Now think about millions of cloud controlled IOT stoves and what would happen if someone hacked the cloud servers and turned all the cookers on at once. This could burn down many houses and even bring the grid down if enough load was turned on at once. The key is not to control IOT de...