If you live in a relatively dry climate, you probably don't worry about underwater hazards during the flood season. If you attend Tsukuba University, Japan however -- just miles from where the Kinugawa River flooded Joso City earlier this year -- the risk of rising water is a very real threat. Enough so that two Tsukuba Ph.D. candidates have developed a 3D-printed sonar glove specifically for the purpose of searching flood waters.

Source: Popular Science, TinkerCad

The holiday season is supposed to be a happy time. But lets be honest, between the stress of picking out gifts, racking up credit card debt you can't afford and being forced to spend time time with your creepy uncle there isn't a lot to smile about. Enter the JöLLY Tracker. It's a wearable of a different kind -- one that monitors just how much you smile. And, if you're not keeping that frown turned upside down, it gives you a gentle "reminder" to smile in the form of an electric shock... to the face.

The holiday season is supposed to be a happy time. But lets be honest, between the stress of picking out gifts, racking up credit card debt you can't afford and being forced to spend time with your creepy uncle there isn't a lot to smile about. Enter the JöLLY Tracker. It's a wearable of a different kind -- one that monitors just how much you smile. And, if you're not keeping that frown turned upside down, it gives you a gentle "reminder" to smile in the form of an electric shock... to the face.

Source: Hacky Holidays

The holiday season is supposed to be a happy time. But lets be honest, between the stress of picking out gifts, racking up credit card debt you can't afford and being forced to spend time with your creepy uncle there isn't a lot to smile about. Enter the JöLLY Tracker. It's a wearable of a different kind -- one that monitors just how much you smile. And, if you're not keeping that frown turned upside down, it gives you a gentle "reminder" to smile in the form of an electric shock... to the face.

We've all had that moment where we sit in front of the keyboard and have trouble just getting started. It can be an especially dire problem when the 30-day deadline of National Novel Writing Month (NaNoWriMo) looms overhead, and that was enough for inventor Steve Hoefer to craft his own USB progress meter. The Arduino-based contraption advances a real-world dial or gauge as the word count reaches the NaNoWriMo servers, giving that extra incentive to meet a daily goal or hit the ultimate 50,000-word mark on time. Hoefer characterizes it as a simple project for those who know their way around an Arduino controller; the toughest part for them may just be constructing the box that keeps the meter presentable. Full instructions are available after the break, although we'd hurry to build the meter before November starts. It could all too easily be the source of the very procrastination we're trying to avoid.

Continue reading NaNoWriMo progress meter uses Arduino to fight writer's block, may be its own distraction (video)

Filed under: Peripherals, Alt

NaNoWriMo progress meter uses Arduino to fight writer's block, may be its own distraction (video) originally appeared on Engadget on Thu, 25 Oct 2012 14:34:00 EST. Please see our terms for use of feeds.

If a seemingly infinitely programmable mini computer like the Raspberry Pi is just too... limiting, we've got good news: the Gertboard extender has started shipping. The $48 companion board reaching customers' doorsteps converts analog to digital and back for Raspberry Pi fans developing home automation, robotics and just about anything else that needs a translation between the computing world and less intelligent objects. The one catch, as you'd sometimes expect from a homebrew project, is the need for some assembly -- you'll have to solder together Gert van Loo's Arduino-controlled invention on your own. We imagine the DIY crowd won't mind, though, as long as they can find the fast-selling Gertboard in the first place.

[Image credit: Stuart Green, Flickr]

Filed under: Misc

Gertboard extender for Raspberry Pi ships to advanced tinkerers originally appeared on Engadget on Wed, 17 Oct 2012 03:58:00 EST. Please see our terms for use of feeds.

CSI: Miami might be out of production, but that doesn't mean we'll be deprived of casual eyewear flipping. Not if Ben Heck has a say in the matter, at least. His latest DIY project automatically swings a pair of clip-on sunglasses into view whenever it's too sunny outside: a photocell attached to an AT Tiny microcontroller checks the light levels and, through an Arduino-based AVR MKII language, tells a rotor to spin the glasses into place. No one will be labeled a fashionista with the requisite battery pack strapped to their heads, but the construction doesn't require CNC milling and won't destroy a favorite frame. We're only disappointed that the sunglasses won't play The Who on command... yet.

Continue reading Ben Heck builds Arduino-based automatic sunglasses, beats David Caruso to the punch (video)

Filed under: Wearables

Ben Heck builds Arduino-based automatic sunglasses, beats David Caruso to the punch (video) originally appeared on Engadget on Mon, 08 Oct 2012 22:44:00 EST. Please see our terms for use of feeds.

We caught our first glimpse at the new, simplified Arduino Leonardo at Maker Faire back in September of last year. At the time, we were promised a late October shipping date, but it failed to materialize. Finally, Massimo Banzi has taken the wraps off the slimmed down microcontroller and its now in stock at retailers across the web. The Leonardo sports a new pin layout, dubbed R3 (which the Uno has also been updated with), that will become standard across all Arduino boards. That's a big deal for shield makers who only have to design and manufacture an add-on once to ensure it's compatible with the entire product line. The new layout also adds some extra pins and versatility, especially in the realm of shields, which can use to the new IOREF pin to determine the voltage of the processor and thus its model. That means a shield doesn't have to be designed specifically with the new ARM-based Due in mind. The other big news is that the circuitry for converting USB to serial communication and the processor itself have been combined, which not only simplifies the design and drives down costs, but allows it to communicate directly with a computer and imitate all sorts of accessories (such as keyboards and mice). Best of all, is the price. The Leonardo, complete with headers, costs just $25 -- a good $10 less than the Uno -- while the headerless, solder-friendly version retails for $22.50. Check out the video after the break for a few more details from Massimo himself.

Continue reading Arduino Leonardo finally launches with new pin layout, lower price (video)

Filed under: Misc. Gadgets

Arduino Leonardo finally launches with new pin layout, lower price (video) originally appeared on Engadget on Mon, 23 Jul 2012 22:27:00 EST. Please see our terms for use of feeds.

Quite possibly the two greatest things in the world -- beer and Arduino -- have been married once again in a hack does them both justice. Accomplished maker and alcohol enthusiast Jeff Karpinski turned a spare Uno and an Ethernet shield into a gadget that automatically checks him in on Untappd. The build is connected to his kegerator through a hall-effect flow sensor that sits in his tap lines. Every time he pulls himself a pint of homebrew, the Aruino makes an API call to the so-called Foursquare for beer nerds, and updates his profile. Obviously, publishing to the site every time the keg is tapped could get messy, so there's an automatic five minute time out to avoid getting repeat hits just for topping off. There's also a button that manually engages the five minute lock out, allowing Jeff to pour his buddies a cold one without claiming the drink for himself on Untappd. And updating is a snap thanks to the simple web server that's integrated. Changing what beer is on tap in the API call is as simple as opening a web browser. Interested in upgrading your own kegerator? Check out the source link for complete instructions and a parts list.

Filed under: Misc. Gadgets, Internet

Arduino Kegerator hack checks in your homebrews on Untappd originally appeared on Engadget on Wed, 18 Jul 2012 14:49:00 EST. Please see our terms for use of feeds.

At certain point in every geek's life, their mother gives up and stops yelling at them to sit up straight. If the lack of constant reminders to maintain good posture has you slouching and hunching, there are countless technological substitutes. Even a few nice DIY ones. But we've got to give Ellen Sundh props for the simplicity of her solution. While similar projects rely on accelerometers, which can be difficult for the budding hobbyist to work with, to monitor the angle of your body, Bad Posture sticks with a simple bend sensor to keep tabs on your spinal cord. The flexible plastic is arranged vertically in a fabric belt that also houses an Arduino, a Wave Shield from Adafruit and a push button for calibration. Sit at your optimal angle, press the button and you're ready to go. Bend too much and the Wave Shield plays a warning -- "bad posture!" Check out the video after the break to see it in action.

Continue reading Bad Posture tells you to sit up straight, replaces your mom with an Arduino

Bad Posture tells you to sit up straight, replaces your mom with an Arduino originally appeared on Engadget on Tue, 26 Jun 2012 14:21:00 EST. Please see our terms for use of feeds.