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.

Who knew Lego characters had to be somewhere in a hurry? Adafruit did, as it just whipped up a minifig-sized train schedule. The invention mates one of Adafruit's own 1-inch OLED boards with an Arduino Uno controlling the schedule behind the scenes. It looks to be a straightforward project for the DIY types, although the display is currently all show: the schedule doesn't (yet) pair up with the train tracks to automatically let your minifigs know if their trip to the pirate spaceship castle has been delayed by ghosts. You can check the source link for the full instructions. Duplo builders, alas, are kept out of the loop.

OLED Lego train station emerges from Adafruit and Arduino gear, minifigs to get home on time originally appeared on Engadget on Tue, 26 Jun 2012 00:07:00 EST. Please see our terms for use of feeds.

Artist Blair Neal, as many other great creators have before him, turned to children's toys as the source of inspiration for his latest project. Crayolascope is a rudimentary 3D display hacked together from several Glow Books, a light-up play on a flip-book from the titular company. The installation, currently housed at the New York Hall of Science in Flushing, layers 12 of its component clear plastic sheets to create a roughly one-foot deep display that plays a simple pre-drawn animation. The whole thing is controlled by an Arduino Mega, that can either play back the neon scribbles at varying speeds (controlled by a knob built into the console) or scrub through frame by frame. Neal isn't quite done tweaking the Crayolascope either. As it stands he's limited to between 14 and 18 frames, before it becomes too difficult to see through the sheets. And it requires near total darkness for optimal operation. To see it in action check out the video after the break.

Continue reading Crayolascope hacks toys into foot-thick 3D display

Crayolascope hacks toys into foot-thick 3D display originally appeared on Engadget on Mon, 25 Jun 2012 16:59:00 EST. Please see our terms for use of feeds.

Not far from the bustling labs of Northeastern University is the even more bustling hacker space known as Artisan's Asylum. The roughly 30,000 square foot complex is home to more than 100 makers, tinkerers and artists who building all sorts of crazy contraptions. One of the less ostentatious projects being worked on within its cavernous halls though, is the Rascal Micro. This tiny board is home to an ARM-based SOC and has its hungry, open-sourced eyes on competitors like Arduino and Beagle. Brandon Stafford, the creator, boiled down its primary selling points to this: "it's maybe 25 times faster, has 1,000 times more storage." Where as the Arduino excels at making things blink, move or Tweet, the Rascal Micro has enough power to function as a full-fledged web server.

Gallery: Rascal Micro hands-on

Continue reading Rascal Micro hands-on (video)

Rascal Micro hands-on (video) originally appeared on Engadget on Wed, 13 Jun 2012 19:30:00 EST. Please see our terms for use of feeds.

When we envision our transhumanist future, it's a little more profound than simply adding a sixth finger... but we suppose you've gotta start somewhere. Instructables user and employee Frenzy gave himself a rather primitive extra digit as part of a project for an Electronics and Robotics class at San Francisco State University. Sadly he doesn't provide step-by-step instructions for building your own cyborg appendage, but it doesn't seem too difficult. Frenzy borrowed heavily from other projects, using EMG sensors to trigger a servo controlled by an Arduino, which he strapped to the back of a glove. Like we said, doesn't seem particularly hard, once you figure out how to get the microcontroller to play nice with the sensors. Obviously this is just one small step step for DIY cyborgs. Next, we need to graph on a few extra arms to make one-man liveblogging a much simpler endeavor. To see Primitive Transhumanism #2: Sixth Finger in action, head on past the break.

Continue reading DIY cyborg appendage is less exciting than it sounds (video)

DIY cyborg appendage is less exciting than it sounds (video) originally appeared on Engadget on Fri, 08 Jun 2012 02:32:00 EST. Please see our terms for use of feeds.

SparkFun struck a chord with many when it released the ProtoSnap series last year. The perforated perfboard housed not only a tiny Arduino compatible chip, but a small host of sensors and components that made assembling simple projects a snap (pun not only intended, but relished). Tomorrow, the company will begin selling the next member of its ProtSnap family -- the MiniBot. Just like its predecessors, the ProtoSnap MiniBot is based around an Arduino compatible microcontroller (specifically ATmega328) and features a number of components that can easily be detached when you're ready to move from prototype to a more permanent arrangement. The onboard selection components is fairly limited. The base is a relatively bare perfboard with a 9v battery holder on one side and two wheels connected to a motor on the other. Up front is two IR sensors that can be used for basic controls.

Of course, it's simple enough to expand on the basic platform with any host of sensors and components, like servos or RF receivers. Ultimately it's up to your imagination and skill level, which is why SparkFun is primarily targeting the kits at the educational market. The company's new educational outreach program is making a big push to put the ProtoSnap MiniBot in classrooms across the country, starting with high schools and trade schools, as a bridge from more simplistic robotics kits to the more advanced projects tackled at the university level. The completely open source robotics platform will be available tomorrow for $74.95. As soon as we can get our mitts on one our own we'll return with a thorough hands on... one that reveals just how much smarter the average high school kid is than us.

SparkFun launches ProtoSnap MiniBot for the budding roboticist originally appeared on Engadget on Thu, 31 May 2012 16:46:00 EST. Please see our terms for use of feeds.

Though electronics hobbyists may not have the same resources that the Maker Sheds of the world have to design, package and sell do-it-yourself kits, electronics component distributor Jameco plans to change that. With Club Jameco, enthusiasts can pitch their kit ideas to the electronic component wizards in Belmont, CA and if a project is deemed viable for production, they'll be provided with feedback and have their idea posted for public comment. After the creation of step-by-step kit instructions, a list of materials and undergoing final approval, kits will be sold to the adoring masses. Once projects roll off production lines and into garages, creators will be paid royalties anywhere from five to ten percent based on quarterly sales. Aside from giving DIYers another sales avenue, it's also an opportunity for those who've been wary of piecing together projects to finally dive in sans the added fuss. Hankering to propose a bundle of your own? Per usual, all the particulars can be found in the source link below.

Club Jameco borrows from Etsy and Kickstarter, lets DIYers design, sell and buy project kits originally appeared on Engadget on Thu, 17 May 2012 03:41:00 EST. Please see our terms for use of feeds.

Not using an Arduino, yet a very useful must-have on every maker’s table. Of course not as awesome as a real safety glass, but then, it is a nice start.

Materials required: An empty, washed 2 liter soda bottle, an elastic band, a pair of scissors, a permanent marker.

All you have to do is cut off the top and bottom of the soda bottle, then cut through the remaining plastic to turn it into a single plastic sheet. Then hold the plastic sheet around your face and draw the goggles with a plastic marker. Cut them out, attach the elastic band to both sides, and you’re done!

For detailed instructions, please proceed to the original post at Make.

Via:[Make, Lifehacker]

Going to buy a new Wireless Controller for your next Robotics project. Why buy a new one when you can Do-It-Yourself? All you need is an Arduino, an old Joystick with a Gameport (15-pin connector) and a pair of Series 1 xBee Modules.

The explanation of the xBee Configuration and the xBee Packet Description is very well done at the blog.

Transmitter: Joystick + xBee [No additional hardware needed]
Receiver: xBee + Arduino + [your amazing Robot, Car or a Plane!]