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Planet

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

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    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.

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

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    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.

  • Dimanche, Mars 30, 2014 - 05:00
    DIY Driving Simulator #ArduinoD14

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    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!

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    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.

  • Dimanche, Mars 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.

  • Dimanche, Mars 30, 2014 - 04:00
    Frankenstein, The Open Source Engine Control Unit

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    The Engine Control Unit is a vital part of every car made in the last 40 years or so, but unlike just about every other electronic device, open source solutions just don’t exist. [Andrey] is trying to change that with rusEfi, a project that hopes to bring together hardware, software, and engines in one easy to use package. He’s even designed Frankenstein, a full ECU ‘shield’ for the STM32F4 Discovery dev board.

    This isn’t the first time we’ve seen [Andrey]‘s adventures in building an ECU. An earlier board was also powered by the STM32F4 Discovery, and he actually drove his 96 Ford Aspire around using this homebrew ECU. It was only firing on two cylinders, but that was only a loose solder connection.

    Of course building an ECU from scratch is worthless without the proper firmware that balances and engine’s fuel economy and performance. This sort of testing must be done empirically and [Andrey] has a Kickstarter going for the development of this firmware and some dyno time. No rewards, but it’s worth chipping in a buck or two. I did.

    Videos below.

     

    Filed under: Engine Hacks, transportation hacks

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

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    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….

    Read More.

    NYCR BarBot02

    NYCR BarBot03

  • Dimanche, Mars 30, 2014 - 01:00
    Arduino-powered laser harp lets you make your own techno music #ArduinoD14

    This is such a cool project: A laser harp that you can play techno music on built by Stephen Hobley. Hack n Mod posted the story on how it works.

    Ever wanted to make your own techno music, but are tired of the standard midi controller? Well, you could build a harp (of all instruments) out of lasers and then play it by breaking the beams of light. See how it’s done.

    The harp is connected to the software synthesizer, the TAOS sensor array sits on the floor in its own stand. The array above the harp is just made up of mirrors for added p’zazz.

    How it works:

    Basically an Arduino connects to a 12-bit DAC chip (TLV5618) using the SPI 3 wire interface. It sends numbers on a timer interrupt to the DAC to specify where the beams are, 0, 455, 900, etc… all the way up to 4095 for 10 beams. It holds each position for about 500uS (half a millisecond) and switches laser blanking on (or is that “off”) for this time. When it reaches the end it brings the mirror back to the start position. The output of the DAC chip is 0-5V – this is then converted to -5v / +5v using a TL082 Opamp chip from Radio shack. Finally it’s passed through a Balanced Line Driver chip to give the full (-/+) 10v ptp) differential signal required by the mirror (laser galvanometer) amplifier.

    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.

  • Dimanche, Mars 30, 2014 - 00:01
    2-Axis Solar Tracker Always Gets a Tan

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    Let’s face it — solar panels still aren’t that efficient. So why not pump as much juice out of them as possible? Building a 2-axis solar tracking unit can increase daily power output by around 30%!

    [Jay Doscher] had his power go out back in 2011, and even though it was only for 12 hours, they realized how ill-prepared they were to deal with a power outage. Food was spoiled, flashlights were dead, candles were sparse… they needed to be prepared better for the next time this happened. This spawned one of [Jay's] longest running projects on his blog Polyideas.

    His goal was to build a fully automated solar tracking unit that could be setup anywhere, and automatically track the sun to ensure optimum ray catching. It makes use of a 12V gear reduced motor to provide panning, and a linear actuator with positional tracking to control the tilt. To track the sun he’s got a digital compass and an Adafruit Ultimate GPS breakout board. To control it all he’s using is an Arduino UNO, but he has been through multiple iterations including his first with a BeagleBone. It’s a very slick and well engineered system and [Jay's] hoping to spread it around the world — the entire thing is open source. What a guy!

    It’s not quite complete yet, but he’s got an amazing build log and a GitHub repository  filled with info — plus the following video showing it off in its current state!

    For a cheaper solar tracker you can build for fun, check out this baby-sized solar tracker that also uses an Arduino! Or how about this one built out of parts from the hardware store?

    Filed under: solar hacks

  • Dimanche, Mars 30, 2014 - 00:00
    An animated Arduino LED matrix table is perfect for a maker’s wedding #ArduinoD14

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    Phil Tucker made this festive animated Arduino LED matrix lounge table for his wedding reception. It’s definitely the perfect touch to any social gathering!

    Finally got around to making an LED table top, as it turns out — for my wedding reception. We decided to have a lounge area and an LED coffee table seemed like the perfect centerpiece for it. I decided instead of making a full table that I would make a table top that fit onto an existing ottoman. I affixed the LED strips to a plywood board which had a 2″ raised frame with aluminium duct tape, to help with brightness.

    Arranging the LED’s in a proper matrix turned out to be quite a job as the strips I used came pre-wired and there isn’t all that much length between LED’s on the strip. I ended up having to cut and re-splice the connection leads for each row of the 7 x 7 matrix, after that the construction went quickly. You could get around this by using a more modular LED strip solution, I initially had ShiftBrites slated for this project, but I made something else with them and when I got around to this table top there were much less expensive options available.

    Read more.


    Featured Adafruit Products!

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    12mm Diffused Flat Digital RGB LED Pixels (Strand of 25) – WS2801; RGB Pixels are digitally-controllable lights you can set to any color, or animate. Each RGB LED and controller chip is molded into a ‘dot’ of silicone. The dots are weatherproof and rugged. There are four flanges molded in so that you can ‘push’ them into a 12mm drill hole in any material up to 1.5mm/0.06″ thick. They’re typically used to make outdoor signs. These pixels have a flat square back, we also have pixels that are long and thin, both are the same electronics, just different shapes! (read more)


  • Dimanche, Mars 30, 2014 - 00:00
    Celebrate Arduino Day #ArduinoD14 @adafruit with Massimo Banzi @mbanzi a special 7pm ET ASK AN ENGINEER LIVE SHOW!!!

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    Adafruit 2798
    Celebrate Arduino Day 2014 with Massimo Banzi, the co-founder and CEO of Arduino and Adafruit on a special Saturday night 7pm ET March 29th, 2014 LIVE show!

    Arduino Day is a worldwide celebration of Arduino’s first 10 years. 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.

    See you there!

  • Samedi, Mars 29, 2014 - 23:00
    Dr. Who’s Nemesis, The Dalek, Built With Arduino #ArduinoD14

    Arduino powered Dalek for all the Dr. Who fans. Designed by Andy Grove.

    After building the miniature robot Dalek earlier this year I decided to start work on a full size Dalek with the goal of finishing it in time for Halloween. Well, with just days to spare, I have completed the project. The construction took five months, with some time spent working on it almost every weekend. It is made primarily out of plywood, cardboard, and papier mache.

    The electronics were comparatively quick to put together. I have used an Arduino Uno to monitor two ultrasonic sensors in the base of the Dalek and send the results over the USB serial interface to a Raspberry Pi which then plays an MP3 clip. I used a separate Arduino board to provide sound to light functionality to drive the dome lights.

    I could have achieved the results I needed using just the Arduino or the Raspberry Pi but it seems to me that the Arduino is better suited to low level functions interacting directly with sensors and motors and so on, whereas the power of the Raspberry Pi is that it is a fully functional Linux computer for tasks requiring more computational power and where I can easily use existing skills to leverage the internet later on. Eventually I plan to put motors in the dome and a webcam in the eye so that the Dalek can look directly at people that approach. I also want to have a web interface to be able to control behavior.

    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.

  • Samedi, Mars 29, 2014 - 22:00
    New to the Arduino? Check out this Free Short Course for Absolute Beginners! #ArduinoD14

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    New to Arduino? It’s never too late to start! The Open Source Hardware Group offers a handy 14 part beginner course in Arduino. Check it out here!

    There is tons of information on the internet about Arduino including forums, tutorials, and project websites – it is overwhelming (and time consuming)! Especially when you are looking for a simple and concise introduction to the basics – many times, people assume too much electronics or programming background (or both), making it difficult to get anywhere.

    The Arduino Short Course for Absolute Beginners is a tutorial style collection of lessons designed to be simple and easy to follow which uses only the most relevant circuits and programs and assumes nothing about your prior electronics or programming experience.

    What you will Learn:

    • The basics of programming your Arduino
    • Just enough electronics to be dangerous
    • How to make your Arduino respond to sensors
    • How to build teleporters, levitating fortresses and nuclear reactors (maybe a stretch…)

    The course will cover the most useful, enlightening and simplest examples to get you started on the road to hacking just about anything.

    Screen Shot 2014 03 26 at 12 50 21 PM

    Read more.

  • Samedi, Mars 29, 2014 - 21:00
    Arduino LED Light Show Projects from ASIMOWALK5 #ArduinoD14

    Matthew W shared a number of Arduino Light Show stages and projects in the Adafruit Google+ Community, documenting his exploration with this type of activity on
    his blog here. The video above was one of the last ones he created with his first adhoc stage as it was starting to show signs of age (according to him, at least), and checkout the videos below for videos from his second and third stages as well.

    From his Arduino LED Light Show FAQ:

    Q. What went into building the show?

    Talking about the latest show, there were a few key elements. It all started with two lines of breadboarded LEDs. The towers were constructed using cardboard and tissue paper to diffuse the RGB LED light in each tower. The “spotlights” were three servo motors with an RGB LED taped onto each servo horn. Behind the scenes was an Arduino Mega 2560 (compatible) along with three mini-breadboards to distribute power and to setup the resistors for some of the LEDs. Half of the wiring was 22AWG solid-core wire, the other half were female-to-male jumper wires.

    Q. Inspirations?

    World of Color at Disney California Adventure started it all. Canada’s Wonderland, my home park, upgraded their fountains over the past couple of years so that has also helped inspire me to continue. I also ran a short-lived (like they all are) website called More Than Starlight that was a blog and database for fountain and light shows. I discovered many amazing shows across the world which helped build up to my first light show.

    Those are pretty much all that’s been asked and worth noting… At least I have a post to reference if it’s needed….

    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.

  • Samedi, Mars 29, 2014 - 21:00
    Hacking A Laser Tape Measure In 3 Easy Steps

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    [Andrew] got a little help from his friends to hack a laser distance meter. Using laser distance meters as sensors is one of the great quests of hackers – with good reason. Accurate distance readings are invaluable for applications including robots, printers, and manufacturing. We’ve seen people try and fail to hack similar units before, while others built their own from scratch. [Andrew] started experimenting with the UNI-T 390B, a relatively cheap ($60 USD) device from China. He found the 390B has a serial port accessible through its battery compartment. Even better, the serial port is still enabled and outputs distance data. While data could be read, [Andrew] couldn’t command the 390B to start a measurement. The only option seemed to be using the Arduino to simulate button presses on the 390B’s front panel.

    In an update to his original blog,  he described an Arduino sketch which would decode the distance measurements. That’s when [speleomaniac] jumped in with the discovery that the Uni-T would respond to commands in the form “*xxxxx#”. Armed with this information, [Andrew] posted a second update with a basic command breakdown. Command *00004# will take a single measurement and output the data via serial. Command *00002# will take 3 measurements, outputting them in a C style array format. There are several other commands which output debug information and what appear to be stored measurement dumps. Although he didn’t explore every nuance of the data output,  [Andrew] now has enough information to initiate a measurement and read the result. Nice work!

    [Thanks James!]

    Filed under: laser hacks, tool hacks

  • Samedi, Mars 29, 2014 - 20:00
    Open Ardbir: Homebrewing with the Arduino! #ArduinoD14

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    As homebrewing becomes more and more common we keep running across new ways to do it. Here’s another one brought to you by MAKE using Arduino!

    Home-brewing can be summarised in the hobby of “make beer at home” and for sure is a wide spread passion all over the world including Italy where I live. Home brews are basically small scale craft beer makers and generally speaking people passionate not only in food and beverage but also DIY enthusiast that love experiments, recipe creation, row material transformation, process control and all the typical makers attitude.

    I don’t know if is the process of beer making, that is typically a step process with support of specific technology, or the typical mindset of the home brew, but as a matter of fact almost all home brewers are very proud of building their own instruments and equipment. In my long home-brewing experience I have found that one of the common passion in the community is the self-building and DIY of the equipment needed for beer production. In the many forums, blogs or magazines talking about the hobby there is almost always a section dedicated to DIY equipment…

    After many different experiment in the past with different technologies I came across the Arduino, and at least to me, it seems the 5th ingredient for beer making—together with water, barley malt, hop and yeast. The marriage of Arduino with brewing is perfect… perhaps because I live in Ivrea, not so far from the Arduino started.

    I tried first to port all my basic systems—based on standard off the shelf technology such as the PID thermo regulator, and PWM controller—into the Arduino ecosystem so that I can start other—more advanced—projects. During one of these initial projects I met another Italian guy who shared a similar passion passion for beer, the same ideas, and same love for the Arduino. Everything stared from a post of mine on an Italian blog… this stimulate people to enhance and develop my initial “all in one ” brewing system idea and from another similar Arduino-based project in Australia from Stephen Mathison.

    Thanks to the massive and fundamental contribution of Salvatore Petrone and Masimo Nevi I’m very proud to present Open Ardbir. It is a control system to fully automate the beer production process with a single vessel brewing system (RIMS).

    The core of the system is an Arduino Uno and a shield has been developed in order to connect temperature probe, the SSR relay for heating element, the Pump relay, and a buzzer, as well as an LCD display and 4 push buttons for interaction and programming.

    Read more.

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  • Samedi, Mars 29, 2014 - 19:55
    New Project: DIY Arduino Bluetooth Programming Shield

    Arduino Bluetooth Programming ShieldUpload sketches to your Arduino wirelessly with a DIY Arduino Bluetooth Programming Shield.

    Read more on MAKE


  • Samedi, Mars 29, 2014 - 19:00
    From the Adafruit Learning System: Arduino “Hunt the Wumpus” #ArduinoD14

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    Dan Malec wrote up this great gaming tutorial for the Arduino on the Adafruit Learning System called Hunt the Wumpus:

    You can relive the early days of computer gaming on your Arduino with Hunt the Wumpus. This game is a particularly good fit for the RGB LCD shield:

    • Different screens can have different backlight colors
    • The LCD is large enough for selecting caves to move to or shoot into
    • The Wumpus, bat, and pit can all have custom characters
    • The D-Pad is well suited to handling menu navigation

    Read more.


    Featured Adafruit Products!

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    RGB LCD Shield Kit w/ 16×2 Character Display – Only 2 pins used! POSITIVE DISPLAY; This new Adafruit shield makes it easy to use a 16×2 Character LCD. We really like the RGB LCDs we stock in the shop both the RGB negative and RGB positive. Unfortunately, these LCDs do require quite a few digital pins, 6 to control the LCD and then another 3 to control the RGB backlight for a total of 9 pins. That’s half of the pins available on a classic Arduino!

    With this in mind, we wanted to make it easier for people to get these LCD into their projects so we devised a shield that lets you control a 16×2 Character LCD, up to 3 backlight pins AND 5 keypad pins using only the two I2C pins on the Arduino! The best part is you don’t really lose those two pins either, since you can stick i2c-based sensors, RTCs, etc and have them share the I2C bus. This is a super slick way to add a display without all the wiring hassle. (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.

  • Samedi, Mars 29, 2014 - 18:01
    Arduino Day is Today

    arduino-day-2014

    Did you know today is Arduino day? A day to pull that little teal board out of the bin and blink some LEDs or dive deeper to challenge your skills. There’s a map of local events, but unless you’re near Italy (the birthplace of the movement) events are a bit hard to find.

    There can be a lot of hate for Arduino around here, but we consider it the gateway drug to learning hardware design so why not support wide-adoption of the platform? We’ve even seen Hackaday-associated projects adopting compatibility. Both the Mooltipass and the FPGA shield projects have the platform in mind. Break down the assumption that electronics require mythical-levels-of-wizardry to toy with and we’ll be on our way to a world filled with hardware hackers. If you do want to get some really cheap boards to hand out Sparkfun has Pro Mini’s for $3 today, as well as some other deals [Thanks Jeff].

    Are you still unconvinced and ready to rage in the comments? Before you do head on over to our Arduino anger management site to exercise some of that aggression.

    Filed under: Arduino Hacks

  • Samedi, Mars 29, 2014 - 18:00
    Build Your Own Band Starting With A Robotic Controlled Drum Set #ArduinoD14

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    Arduino-Controlled Robotic Drum via randofo

    For years I have been telling anyone who listens that I was going to build a robotic drum. Most people kind of shrugged indifferently. Even as I built it, most people kind of glanced over at it and conveyed doubtfulness. It seemed like no one but myself was convinced of just how awesome it was going to be.

    I received a lot of snarky comments about how I was making a strange annoying noise maker. When I finally go it set up for the trial run, I quickly silenced the naysayers. This robotic drum blew everyone away. I was finally able to convey my vision and explain why someone would ever want to build a robotic drum.

    The reason to build a robotic drum is because it is plain super-awesome. It keeps a beat like clockwork. You can slow down and speed up any drum beat with precision and ease. It can even play things a real human drummer could never do.

    I intend to use mine for rocking out. The current plan is to program it with different drum beats and play guitar along with it.

    I decided to use linear actuators (car door lock motors to be exact), and Arduinos with motor controller shields simply for ease of use and duplication. I am sure there are other more elegant ways to interface with the motors, but this is by far the easiest.

    Read Full Tutorial


    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.

  • Samedi, Mars 29, 2014 - 17:00
    From the Adafruit Learning System: Tiny Arduino Music Visualizer #ArduinoD14

      Tiny Arduino Music Visualizer: Maximum blinkenlights, minimum effort!

      Here’s an easy-to-build project that really packs a lot of blinkenlight for the effort: a little pocket-size music visualizer we call “Piccolo.”

      Set Piccolo next to the telly or some speakers and you’ll see the lights respond to music and sound — lowest notes toward the left end of the graph, highest notes toward the right.

      Technically this would be called a “spectrum analyzer,” but as this is not a precision scientific instrument, we’re more comfortable labeling it a “visualizer.” It’s strictly for show.

      This intermediate Arduino project shows a clear progression from input to processing and then output in a package that’s appealing and easy for minds to grasp: music and lights. It’s not abstract or “science-y” unless you choose to peel back the layers…

      Featured in this guide:

      Check out the full tutorial here!


      ID902_MED

      Adafruit Bicolor LED Square Pixel Matrix with I2C Backpack: What’s better than a single LED? Lots of LEDs! A fun way to make a small colorful display is to use a 1.2″ Bi-color 8×8 LED Matrix . Matrices like these are ‘multiplexed’ – so to control all the 128 LEDs you need 24 pins. That’s a lot of pins, and there are driver chips like the MAX7219 that can help control a matrix for you but there’s a lot of wiring to set up and they take up a ton of space. Here at Adafruit we feel your pain! After all, wouldn’t it be awesome if you could control a matrix without tons of wiring? That’s where these adorable LED matrix backpacks come in. We have them in three flavors – a mini 8×8, 1.2″ Bi-color 8×8 and a 4-digit 0.56″ 7-segment. They work perfectly with the matrices we stock in the Adafruit shop and make adding a bright little display trivial. It’s called a Bicolor LED, but you can have 3 colors total by turning on the red and green LEDs, which creates yellow. That’s 3 colors for the price of 2! 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.

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