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  • Monday, March 31, 2014 - 15:00
    Dead Computer Tower? Why Not Make a Tool Box?

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    Turns out a dead computer tower is the perfect structure for an oversized tool box, from hackaday.

    [Michael Gohjs] acquired a bunch of old business computers — the Dell Optiplex GX400, to be precise — and after salvaging any of the useful components out of them he was left with the cases. Not wanting to toss them for recycling, he decided to try upcycling one into a portable tool box.

    The cool thing with using a computer tower for a tool box is most of it is already setup for modular storage spaces. [Michael] removed the bracket that holds the power supply in place, and using some cardboard from a calendar stand formed a box attached to it — instant storage space. Even better? The 5.25″ drive bays have sliding rails for easy removal! Again, all [Michael] had to do was build a box in between the slot rails and he had a cleverly utilized drawer.

    The rest of the case was built in a similar manner, making use of pre-existing features, and making new cubbies. If you wanted to get fancy, you could use sheet metal to do this to make an even more rugged toolbox.

    Read more.

  • Monday, March 31, 2014 - 14:00
    ArduinoPixel – Android App to Control a NeoPixel LED Strip via Arduino Web Server #NeoPixel #Arduino

    Nick Lamprianidis shared with us his Android app that communicates with an Arduino Web Server to control a NeoPixel LED strip – ArduinoPixel on GitHub:

    This project consists of two pieces. The first piece is an Arduino sketch that implements a Web Server and offers an API for controlling a NeoPixel LED Strip. The second piece is an Android app, ArduinoPixel, that connects to the Arduino Web Server and sends commands to control the color and the on/off state of the LED strip.

    The Arduino sketch is also available at codebender. You can clone the project, update the controller and network parameters, and upload it straight to your Arduino Ethernet, or any other Arduino compatible board w/ an Ethernet Shield.

    The Android application is available on Google Play. Install the app to your phone or tablet, configure the network parameters you set earlier in the Arduino sketch, and you are ready to go. You can watch a demo on YouTube.

    Read more.

    ArduinoPixel


    Featured Adafruit Product!

    PID1138

    Adafruit NeoPixel Digital RGB LED Weatherproof Strip 60 LED -1m – WHITE: You thought it couldn’t get better than our world-famous 32-LED-per-meter Digital LED strip but we will prove you wrong! You wanted twice the LEDs? We got it (well, its 1.875 times as many but that’s within a margin of error). You wanted thinner strips? Now only 12.5 mm wide, 10 mm if you remove the strip from the casing. You wanted less noticable strip color – this strip has white-colored flex PCB, which will be less visible against white-painted walls. This is the strip with white flex PCB, its identical to the black 60 LED/meter except it has a different color mask on the flex strip (read more)

  • Monday, March 31, 2014 - 13:00
    Math that predicts glucose has paved the way for an artificial pancreas #biohacking #math

    NewImage

    Futurity has the story on the latest development in artificial organs- using math!

    A mathematical model can predict with more than 90 percent accuracy the blood glucose levels of individuals with type 1 diabetes up to 30 minutes before a change in levels.

    “Many people with type 1 diabetes use continuous glucose monitors, which examine the fluid underneath the skin,” says Peter Molenaar, a professor of human development and family studies and of psychology at Penn State…

    “In the past decade, much progress has been made in the development of a mechanical ‘artificial pancreas,’ which would be a wearable or implantable automated insulin-delivery system consisting of a continuous glucose monitor, an insulin pump, and a control algorithm closing the loop between glucose sensing and insulin delivery,” he says.

    “But creating an artificial pancreas that delivers the right amount of insulin at the right times has been a challenge because it is difficult to create a control algorithm that can handle the variability among individuals. Our new model is able to capture this variability. It predicts the blood glucose levels of individuals based on insulin dose and meal intake.”

    The researchers created a time-varying model estimated by the extended Kalman filtering technique. This model accounts for time-varying changes in glucose kinetics due to insulin and meal intake.

    The team tested the accuracy of its model using an FDA-approved UVa/Padova simulator with 30 virtual patients and five living patients with type 1 diabetes. The results appeared online in the Journal of Diabetes Science and Technology.

    “We learned that the dynamic dependencies of blood glucose on insulin dose and meal intake vary substantially in time within each patient and between patients,” says Qian Wang, professor of mechanical engineering.

    “The high prediction fidelity of our model over 30-minute intervals allows for the execution of optimal control of fast-acting insulin dose in real time because the initiation of insulin action has a delay of less than 30 minutes. Our approach outperforms standard approaches because all our model parameters are estimated in real time. Our model’s configuration of recursive estimator and optimal controller will constitute an effective artificial pancreas.”

    Read more.

  • Monday, March 31, 2014 - 12:00
    UW student researches ways to make robots more human by making them more distracted

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    This piece in the Badger Herald highlights new research being done at the University of Wisconsin on how to make robots more like us humans. The main focus is on “gaze aversion,” which teaches robots to turn away and act distracted during conversation. Robots! They’re socially awkward! Just like us! via boingboing.

    If interactive robots were able to pause during conversation and take a moment to gaze off into the distance as if pondering what the user was saying, research suggests this small change could make them seem less robotic.

    Sean Andrist, a graduate researcher at the University of Wisconsin, studies ways researchers can improve how communicative characters, both digitally-constructed virtual agents and physical robots, maintain eye contact.

    Specifically, Andrist’s research focuses on “gaze aversion,” or the moments when people glance away or look around during conversation.

    Andrist has a particular interest in human-computer interaction and computer animation, so he started working on a cross-section of these two topics. He looked at how to make computer agents behave more naturally and work with users more intuitively, his co-advisor, Bilge Mutlu, a professor in the Computer Sciences Department, said.

    To achieve a stronger application of gaze mechanisms in communicative characters, Andrist said he also studies social science aspects of how humans behave while communicating with one another.

    In his most recent paper, Andrist outlined how speakers use these aversions in conversation, they signal to the listeners that cognitive processing is occurring, creating the impression that deep thought or creativity is being undertaken in formulating their speech.

    Read more.

  • Monday, March 31, 2014 - 11:18
    Transparent IC Portraits

    Witness below – some of the intricate detail made visible by the transparent IC package, each one nestled in their own particular flavor of light sensor breakout board.

    If only all chip dies were so visible …

    SI1145 Digital UV Index / IR / Visible Light Sensor

    GA1A12S202 Log-scale Analog Light Sensor

    RGB Color Sensor with IR filter – TCS34725

    Flora Lux Sensor – TSL2561 Light Sensor

  • Monday, March 31, 2014 - 11:00
    From the Forums: Open Hardware, open source 3DOF robot arm with AMS2

    Open Hardware, open source 3DOF robot arm with AMS2 on the Adafruit Forums:

    I had some AMS2 shields lying around when I needed to drive some stepper motors. I thought you might like the results. (Read more.)

    From the MarginallyClever.com project page:

    …I’m dedicating the next year to one of my dream projects: Building a 6DOF arm and making it available for everyone.

    Why now?

    For the last two years I’ve been teaching myself what I need to know to build a robot arm. I started the Makelangelo to learn how to use stepper motors. I built my first Delta robot to learn how to calculate Inverse Kinematics. I Build the first Stewart Platform because I thought I could use it as a wrist for the robot arm and because I want to drive at least 6 stepper motors in the final arm. It’s like I’ve got the Minecraft blocks and now I can craft them together. The Makelangelo 3 is out, the Seattle Mini Maker Fair is over, and I have more time to work on what really matters to me.

    How does it work?

    Let’s start by naming the major parts. The finger is the triangle bit at the end where a tool would go. Connected to that is the forearm, which is a parallelogram shape. Connected to the forearm is the bicep, which also has a parallelogram. The two parallelograms are connected by the triangle piece at the top, which forces the finger tip to always be level with the table. The bicep is connected to the shoulder where all the motors and electronics are mounted. The shoulder is connected to the base, which is suction cupped or screwed to a table.

    Between the shoulder and the elbow there’s an extra “tendon” bar that pulls on the back of the elbow. See how there’s two gears on the front of the shoulder? One of those gears is attached to the tendon. That way I can put all the motors on the base and make the arm lighter. The second gear is turning the shoulder.

    In this first prototype I’m using Two Adafruit Motor Sheild v2 on an Arduino UNO for the brain. For the first test of the software I used the gcodecncdemo for AMS2 with 4 axis. I could type gcode command G00 Z10 and the robot would turn to the left, G00 X10 would move the shoulder, and G00 Y10 would move the elbow….

    Read More.

    MarginallyClever

  • Monday, March 31, 2014 - 10:00
    Mentors help create a sustainable pipeline for women in STEM- Sign up to be a mentor now!

    Million Women Mentors

    Forbes recently published an interview with Balaji Ganapathy and Seeta Hariharan who both work with the Million Women Mentors program. It’s aimed at creating a million women and men mentors for those looking to go into STEM fields.

    Women make up about half of the workforce in America, but they only represent 24% of the workforce in STEM fields. Why should we care? First and foremost, this statistic calls attention to an untapped potential; talent that we need in science, technology, engineering and mathematics in order to remain competitive from a global perspective. But for women, this is important on another level because careers in STEM industries offer better compensation and more career advancement opportunities. In fact, women who hold STEM positions earn 92 cents to the dollar versus 77 cents for women who are not in these fields.

    Yet, creating a pathway for women to be successful in these industries is a complex problem; one that must be addressed on several different levels in order to be effective. Young girls are not encouraged to study these subjects in school and even if they receive STEM degrees, many are not pursuing careers in these fields or staying in STEM professions. There are also cultural stereotypes that young girls face growing up that discourages STEM career choices, and these biases often start at home at an early age. Hence, the Million Women Mentor program was created with the goal of creating a sustainable pipeline of women by mobilizing and engaging one million men and women to serve as STEM mentors by 2018.

    Here’s a few selections from the interview but everyone should make sure to go check out the full thing- it’s very inspiring!

    Marcus: What advice do you give young women in STEM about mentoring?

    Hariharan: I actually tell them that you don’t just choose one mentor. And it’s not necessary for you to choose a mentor that’s right at the top of the ladder. You don’t have to have a CEO as your mentor. You have to choose someone that is willing to give you the time. And I also tell them that mentors can come in various forms. So you may want to have a mentor, as an example, that could help you understand your own strengths and weaknesses. Another mentor might help you to understand organization dynamics. Another mentor could help you to build a network within the organization so that you’re effective in navigating your career path that you juggle for yourself. So I always tell women that, you’ve got to have more than one mentor. When you pick a mentor, choose someone that you can give something back to. If you can give more than you receive, it will be pretty good, in my opinion.

    Marcus: What are you looking for in a mentor and what type of commitment do they need to make?

    Ganapathy: A mentor can be anybody who is willing to give back and has the time available to do that. So, from a commitment point of view, we’re looking at 20 hours annually. Which means that, it’s just about 1-2 hours a month that they need to spend on mentoring a young woman, an early career woman. And, there are different pathways that we are prescribing. So it’s not a “one size fits all.” You can do face-to-face mentoring. You can do online mentoring. You can do internships at your institution – whether it is a public, private, or entrepreneurs-led institution. You can have workplace mentoring, or job shadowing. You can also do sponsorships.

    You can sign up to be a mentor here.

  • Monday, March 31, 2014 - 09:00
    This incredible video shows rarely seen footage of “slow” marine life

    Daniel Stoupin made this incredible time lapse video of rarely seen footage of “Slow” marine life in the Great Barrier Reef. We highly recommend watching this in full screen HD because the visuals are truly stunning.

    The most important living organisms that play the key functions in the biosphere might not seem exciting when it comes to motion. Plants, fungi, sponges, corals, plankton, and microorganisms make life on Earth possible and do all the hard biochemical job. Similarly to all living things, they are dynamic, mobile, and fundamentally have the same motion properties as us. They grow, reproduce, spread, move towards source of energy, and away from unfavorable conditions. However, their speeds happen to be out of sync with our narrow perception. Our brains are wired to comprehend and follow fast and dynamic events better, especially those very few that happen at speeds comparable to ours. In a world of blazingly fast predators and escaping prey events where it takes minutes, hours, or days to notice any changes are harder to grasp.

    “Slow” marine life is particularly mysterious. As colorful, bizarre-looking, and environmentally important as we know corals and sponges are, their simple day-to-day life is hidden. We know some bits about their biochemistry, corals’ interaction with zooxanthella algae, their life cycles, and systematics. Unfortunately, it’s hard to tell what we don’t know about the rest, and particularly when it comes to interaction with other organisms happening over long periods of time.

    Here’s some info on how he made the video from his upload on Vimeo:

    To make this little clip I took 150000 shots. Why so many? Because macro photography involves shallow depth of field. To extend it, I used focus stacking. Each frame of the video is actually a stack that consists of 3-12 shots where in-focus areas are merged. Just the intro and last scene are regular real-time footage. One frame required about 10 minutes of processing time (raw conversion + stacking). Unfortunately, the success rate was very low due to copious technical challenges and I spent almost 9 long months just to learn how to make these kinds of videos and understand how to work with these delicate creatures.

    Read more.

  • Monday, March 31, 2014 - 08:00
    Swapping Streetlights with Luminous Trees

    Daan Roosegaarde, a Dutch designer captivated by the merging worlds of nature and technology, is developing a plan to replace traditional streetlights with glowing plants and trees in an on-site installation, from dezeen.

    Dezeen and MINI Frontiers: Dutch designer Daan Roosegaarde is exploring ways of using the bio-luminescent qualities of jellyfish and mushrooms to create glow-in-the-dark trees that could replace street lights.

    In this movie filmed at SXSW in Austin, Roosegaarde explains how: “In the last year I really became fond of biomimicry.”

    “What can we learn from nature and apply to the built environment, to roads, to public spaces, to our urban landscape?” asks Roosegaarde.

    Biomimicry is the method of imitating models and systems found in nature to solve complex design issues. One of the biological phenomena that fascinated Roosegaarde was how animals like jellyfish and fireflies generate their own light.

    “When a jellyfish is deep, deep underwater it creates its own light,” he says. “It does not have a battery or a solar panel or an energy bill. It does it completely autonomously. What can we learn from that?”

    Roosegaarde’s interest in biomimicry led him to collaborate with the State University of New York and Alexander Krichevsky, whose technology firm Bioglow unveiled genetically modified glow-in-the-dark plants earlier this year.

    Krichevsky creates the glowing plants by splicing DNA from luminescent marine bacteria to the chloroplast genome of a common houseplant, so the stem and leaves emit a faint light similar to that produced by fireflies and jellyfish.

    Roosegaarde is now working on a proposal to use a collection of these plants for a large-scale installation designed to look like a light-emitting tree.

    Glowing Tree Roosegaarde Dezeen 644

    Read more.

  • Monday, March 31, 2014 - 07:00
    From the Forums – Adafruit Trellis Geome Midi Sequencer #trellis #genome #midi

    George Kuetemeyer shared an impressive Adafruit Trellis Geome Midi Sequencer on the Adafruit Forums:

    Midi music eight step sequencer demo for Adafruit Trellis keypad. Driven by Arduino Uno. Button data sent to Midi Shield. Midi data sent to Yamaha Midi sound module.

    Top six rows used for entering note data. Up to 6 notes (pentatonic scale) per step. Bottom row enables random octave shifting for given step. Second row buttons enable echo from three notes back from current step.

    Here is the code for the Geome sequencer.

    This works pretty well. Not too glitchy. Would really like to be able to handle Trellis within an interrupt handler. That way it would be easier to implement midi clock signal, etc., as I am doing with some other projects.

    Read More.


    Featured Adafruit Product!

    PID1616

    Adafruit Trellis Monochrome Driver PCB for 4×4 Keypad & 3mm LEDs: This item is just for the Trellis driver PCB assembly: LEDs and buttons not included. Trellis is an open source backlight keypad driver system. It is easy to use, works with any 3mm LEDs and eight tiles can be tiled together on a shared I2C bus. This PCB is specially made to match the Adafruit 4×4 elastomer keypad. Each Trellis PCB has 4×4 pads and 4×4 matching spots for 3mm LEDs. The circuitry on-board handles the background key-presses and LED lighting for the 4×4 tile. However, it does not have any microcontroller or other ‘brains’ – an Arduino (or similar microcontroller) is required to control the Trellis to read the keypress data and let it know when to light up LEDs as desired. Each tile has an I2C-controlled LED sequencer and keypad reader already on it. The chip can control all 16 LEDs individually, turning them on or off. It cannot do grayscale or dimming. The same chip also reads any keypresses made with the rubber keypad. The connections are ‘diode multiplexed’ so you do not have to worry about “ghosting” when pressing multiple keys, each key is uniquely addressed. (read more)

  • Monday, March 31, 2014 - 06:00
    IRL Version of circle stop using Adafruit Neopixel ring!

    Circle stop is an addictive new game for iPhone and android. Jenny Xing decided to build an IRL version using one of our neopixel rings- very cool!

    A team here at @pearlhacks built a real version of #circlestop!

    Read more.


    Featured Adafruit Product!

    NewImage

    NeoPixel Ring – 12 x WS2812 5050 RGB LED with Integrated Drivers: Round and round and round they go! 12 ultra bright smart LED NeoPixels are arranged in a circle with 1.5″ (37mm) outer diameter. The rings are ‘chainable’ – connect the output pin of one to the input pin of another. Use only one microcontroller pin to control as many as you can chain together! Each LED is addressable as the driver chip is inside the LED. Each one has ~18mA constant current drive so the color will be very consistent even if the voltage varies, and no external choke resistors are required making the design slim. Power the whole thing with 5VDC and you’re ready to rock. Read more.

  • Sunday, March 30, 2014 - 23:23
    HARDWARE HANGOUT with Brady Forrest Tuesday 7pm ET 4/1/14 #makerbusiness @brady @highway1io @PCH_Intl #Hardware #startup #incubator

    Adafruit 2257-2
    Brady-F-1
    Logo - With Pch
    Come meet and ask questions on our next HARDWARE HANGOUT with Brady Forrest. Brady runs Highway1 and helps shepherd startups of all backgrounds into their Accelerator program. He also co-founded Ignite – a geek event which has spread to over a hundred cities worldwide.. PCH is a large supply chain management company with primary operations in Shenzhen. It ships $10B of product annually. Highway1 helps you get your prototype ready for market. Based in SF, they are a four month program & currently hosting 11 companies – primarily consumer. The next class runs Mar-Jun. More about Brady – he is Vice President at Highway1, PCH International’s incubator program. A prolific speaker and maker on the geek scene, Brady can be found at speaking engagements around the world, inventing new forms of transportation at Burning Man, or creating in the Highway1 San Francisco workshop. Additionally, Brady writes for O’Reilly Radar, tracking changes in technology.

    Things we’ll be asking!

    • When/if makers should crowdfund?
    • When do you hire certain roles?
    • What are the hidden gotchas?
    • When/should you go to China?
    • How?
    • The role of opensource

    Post your questions here, on G+, join live and more!. Click here for the Google+ Hangout page (you can start asking your questions now too).

  • Sunday, March 30, 2014 - 09:00
    14-year-old can save the government millions by changing font style

    14-year-old Suvir Mirchandani’s science fair project was to determine how his middle school could reduce ink usage to cut waste and cost. What he found would save his school thousands of dollars, and, if applied to the federal and state governments, millions!

    “Ink is two times more expensive than French perfume by volume,” Suvir says with a chuckle.

    He’s right: Chanel No. 5 perfume costs $38 per ounce, while the equivalent amount of Hewlett-Packard printer ink can cost up to $75.

    So Suvir decided to focus his project on finding ways to cut down on the costly liquid.
    Collecting random samples of teachers’ handouts, Suvir concentrated on the most commonly used characters (e, t, a, o and r).

    First, he charted how often each character was used in four different typefaces: Garamond, Times New Roman, Century Gothic and Comic Sans. Then he measured how much ink was used for each letter, using a commercial tool called APFill® Ink Coverage Software.

    Next he enlarged the letters, printed them and cut them out on cardstock paper to weigh them to verify his findings. He did three trials for each letter, graphing the ink usage for each font.
    From this analysis, Suvir figured out that by using Garamond with its thinner strokes, his school district could reduce its ink consumption by 24%, and in turn save as much as $21,000 annually.

    With encouragement from his teacher and the founders of the Journal for Emerging Investigaors, Suvir applied his research to a larger institution, the government.

    Using the General Services Administration’s estimated annual cost of ink — $467 million — Suvir concluded that if the federal government used Garamond exclusively it could save nearly 30% — or $136 million per year. An additional $234 million could be saved annually if state governments also jumped on board, he reported.

    Read more.

  • Sunday, March 30, 2014 - 08:00
    Using Minecraft to Understand the Speed of Light

    YouTube user spumwack explains and demonstrates the speed of light using Minecraft. Don’t blink! You don’t want to miss it. via digg

  • Sunday, March 30, 2014 - 07:00
    Scientists Create Biodegradable Battery That ‘Melts’ Inside The Body After Use

    14919-combined

    An exciting new biodegradable battery unveiled by a team of scientists could have huge potential for biomedical devices. The tiny battery can be safely absorbed by the body within just three weeks and could be used in temporary devices intended to monitor tissue or deliver short term treatment. From Nature:

    Their devices, described last week in Advanced Materials, use anodes of magnesium foil and cathodes of iron, molybdenum or tungsten. All these metals will slowly dissolve in the body, and their ions are biocompatible in low concentrations. The electrolyte between the two electrodes is a phosphate-buffered saline solution, and the whole system is packed up in a biodegradable polymer known as a polyanhydride.

    Currents and voltages vary depending on the metal used in the cathode. A one-square-centimetre cell with a 50-micrometre-thick magnesium anode and an 8-micrometre-thick molybdenum cathode produces a steady 2.4 milliamps of current, for example. Once dissolved, the battery releases less than 9 milligrams of magnesium — roughly twice as much as a magnesium coronary artery stent that has been successfully tested in clinical trials, and a concentration that is unlikely to cause problems in the body, says Rogers. “Almost all of the key building blocks are now available” to produce self-powered, biodegradable implants, he says.

    All versions can maintain a steady output for more than a day, but not much longer. The team hopes to improve the batteries’ power per unit weight — known as power density — by patterning the surface of the magnesium foil to increase its surface area, which should enhance its reactivity. The authors estimate that a battery measuring 0.25 cm2 and just one micrometre thick could realistically power a wireless implantable sensor for a day.

    Read more.

  • Sunday, March 30, 2014 - 06:00
    Take a Look at the First Successfully Transplanted, 3D-Printed Skull

    140327-science-3d-printed-skull_e8f32032da2f37a65e83ba184442e287

    Big news in 3D printing and medical implants this week! Doctors have declared the first 3D printed skull replacement surgery they performed 3 months ago to be a success. From io9:

    The surgery was performed in the University Medical Center at Utrecht University, after surgeons there began treating a patient with a condition that was causing a thickening of the skull to almost 3 times its normal thickness, putting pressure on the brain.

    By replacing her skull with a 3D printed one — a process that took over 23 hours of surgery — they were able to alleviate that pressure and, three months after the surgery, the doctors report that the patient has already gone back to work.

    Read more.

  • Sunday, March 30, 2014 - 06:00
    An Engineer’s Eureka Moment With a G.M. Flaw

    Adafruit 2823

    An Engineer’s Eureka Moment With a G.M. Flaw – NYTimes.com.

    Somewhere inside the two-inch ignition switch from the 2005 Chevrolet Cobalt was the clue that Mark Hood was seeking.

    Mr. Hood, an engineer in Florida, had photographed, X-rayed and disassembled the device in the fall of 2012, focusing on the tiny plastic and metal switch that controlled the ignition. But even after hours of testing, Mr. Hood was at a loss to explain why the engine in Brooke Melton’s Cobalt had suddenly shut off, causing her fatal accident in 2010 in Georgia.
    It was no small matter to her family, which had hired Mr. Hood for their lawsuit against General Motors.

    Then he bought a replacement for $30 from a local G.M. dealership, and the mystery quickly unraveled. For the first time, someone outside G.M., even by the company’s own account, had figured out a problem that it had known about for a decade, and is now linked to 13 deaths.

    The discovery was at once subtle and significant: Even though the new switch had the same identification number — 10392423 — Mr. Hood found big differences. A tiny metal plunger in the switch was longer in the replacement part. And the switch’s spring was more compressed. And most important, the force needed to turn the ignition on and off was greater.

    Read more.

  • Sunday, March 30, 2014 - 05:00
    DIY Driving Simulator #ArduinoD14

    NewImage

    DIY Driving Simulator using an Arduino. via for projects

    This project took about 3 months to completely finish. It acts as a gravity sensing light up “steering wheel” that allows the user to interact with driving games by tilting and turning the steering wheel. This is a great gift for tech people or anyone that is getting ready to drive. Later in the project I explain how you can take this project further to include gas and brake pedals, then with a little software modification, have a real working driving simulator. This setup converts forward tilt into the ‘w’ key, backward tilt into the ‘s’ key, left tilt into the ‘a’ key, and right tilt into the ‘d’ key, although this can be modified to use arrow keys quite easily. I only used wasd because that is how I programmed my driving game in game maker. I teach you how to use real gravitational sensing potentiometers and then, for those of you like myself who can’t afford to buy things of that nature, show you both where to find them in household items and how to build your own from scratch!

    NewImage

    Read more


    Arduino adafruit industries blog

    March 29th is Arduino Day 2014! Arduino day is “a worldwide event bringing together Arduino people and projects. It’s 24 hours full of events – both official and independent, anywhere around the world – where people interested in Arduino can meet, share their experiences, and learn more.” Adafruit will be celebrating with 24 hours of Arduino posts on our blog as well as a special Saturday night LIVE show with Massimo Banzi, co-founder and CEO of Arduino. Join us Saturday, March 29th at 7 PM EST to celebrate Arduino Day 2014! Be sure to check out our extensive learning system tutorials on Arduino as well as our Arduino blog coverage and products.

  • Sunday, March 30, 2014 - 04:00
    Playing Chiptunes with an Arduino Micro! #ArduinoD14

    Verspira uses an arduino micro to play ‘Last Chip Standing’ by Chewrafa, from the arduino blog.

    All audio generated on the Arduino. If you look closely, you will see that I added a yellow wire going from the TXLED to the empty hole that was drilled over by the reset button. I added a single pin though this hole and epoxied the plastic in place to give myself another bread-boardable pin that has access to the PD5 signal which was not broken out. Simple mod really.

    Original code by Jarkko Lempiäinen.
    See this video for code links: http://www.youtube.com/watch?v=XZfw7l…

    Track: ‘Last Chip Standing’ by Chewrafa.
    See this video for higher quality audio: http://www.youtube.com/watch?v=vPKri-…

    The audio probably suffers a bit from my DAC since the resistors were 5% tolerance and I did my best to hand-match them down to 0.1%. I’m looking to get a real 8bit DAC and put it on this Arduino to see if there are any improvements.

    All audio from the Arduino, with an LM386 amplifier on the receiving end of my R-2R DAC. Resistances were 10K and 20K (actual 9.85K and 19.70K).

    Read more.


    Arduino adafruit industries blog

    March 29th is Arduino Day 2014! Arduino day is “a worldwide event bringing together Arduino people and projects. It’s 24 hours full of events – both official and independent, anywhere around the world – where people interested in Arduino can meet, share their experiences, and learn more.” Adafruit will be celebrating with 24 hours of Arduino posts on our blog as well as a special Saturday night LIVE show with Massimo Banzi, co-founder and CEO of Arduino. Join us Saturday, March 29th at 7 PM EST to celebrate Arduino Day 2014! Be sure to check out our extensive learning system tutorials on Arduino as well as our Arduino blog coverage and products.

  • Sunday, March 30, 2014 - 03:00
    Jackpot! How Hackers Made a Slot Machine That Mixes Drinks #ArduinoD14

    NYCResistorBarBot

    The list of impressive BarBots making use of Arduino-based controllers and monitors is nearly endless. Here’s one that I particularly enjoyed, a Fear and Loathing-based Slot Machine BarBot created by members of NYCResistor back in 2011:

    …From poking around the machine’s guts to the actual build-out, though, the idea and approach changed a number of times. They initially planned to assign ingredients to positions on the wheel, but near-undrinkable combinations convinced them to switch to a randomized reward system based on 30 or so preprogrammed cocktails stored in an sqlite database. As Hunter S. Thompson’s favorite drink was Wild Turkey, however, they mapped it to the big win.

    Ingredients like vermouth, bitters, sour mix, and garnishes were kept on the side, and Resistor Max Henstell developed an Arduino-based LED screen to instruct players what they needed to add to their payout. This same display also cycles through quotes from the story, like “We can’t stop here! This is bat country!!” and “As your attorney I advise you to to spin.” The video screen behind the sunglasses on the bottom image was also programmed with video clips, but it blew out a day before the project was finished.

    For the beverage reservoirs, the team first tried using breast pumps to dispense pours. However, they couldn’t keep liquids and air from flowing back into these containers. Instead, team member Nick Vermeer developed a pressure bed system using 12 solenoid valves and modified food-safe jars from The Container Store.

    Controlled by an internal netbook running a python script, the Arduino-controlled solenoids open in a timed sequence and dispense through a shared nozzle designed by Adam Mayer. Though these pressurized containers could have been dangerous, they were able to avoid booze explosions; the containers are secure with up to 30 pounds of pressure.

    In the final version, they also added in a “cheat” that lets users request a specific cocktail to come up as the next selection, and gave the machine the ability to tweet the drinks it mixes through @luckyloathing. It took eight hackers three weeks and between thirty and fifty hours each to build this cocktail-slinging device, and their victory party must have been awesome….

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    NYCR BarBot02

    NYCR BarBot03

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