Member Since: April 28, 2009

Country: United States

  • The meeting to present the year end review to the employees quickly went downhill as the presenters resorted to costumes and acting to portray the more abstract financial ideas...

  • NO! You cant touch my Udder...

  • Here at Sparkfun, we have re-defined equal opportunity!

  • Seems a bit of a stretch to me... According to the wikipedia page, Charlieplexing relies on the the specific capability of the Micro-controller pins, or whatever device you are using as a driver, to go into a high impedance and possibly reverse bias, to drive specific LEDS and prevent others from lighting. Maybe if you were using two pin bi-color LEDS and reverse bias to control what color lights up, then you could call it Charlieplexing, but in its current state I have to agree with Circuitsoft, and call it multiplexing. None the less though, a very cool project! Good work! I am inspired to build something similar now!

  • Well, first of all, If I would learn to read carefully, I would have missed one less.
    Some of them, ahem, that package one, SIL? Never heard of such a thing... It was kind of a crap shoot. Same with the GPS one. I personally think the user will contribute more to error than the mountains will... but anyway... Still a really good refresher, and great stuff that everybody working with electronics should understand....

  • Well, that blows... Never got to even see the quiz page at all! Sad, because all I wanted was my GPS module.... Better luck next year I guess...

  • I wish more people would take this approach and delve deeper into things! The Arduino is great when used for what it was meant to be, a Basic, simple solution for rapid application development and instant gratification, not a fix-all, end all like it is touted to be by so many!
    I get frustrated when people talk about it as if it is the only solution out there, and how your not really 'part of the crowd' or something if you don't use one! It also is frustrating when people frown on application development that ISNT done with the Arduino! 'Oh it doesn't use an arduino, its not worth looking at cause I cant cut and paste it!' It also bugs me that it has become a badge of 'Blog Cred' i.e. 'Yea, I use the 'dweeno, therefore I'm a cool embedded designer blogger!'
    Yea? Well the guys who created the 'dweeno that made you and your blog so 'cool' are the guys who actually did the real work that should be admired, because it allowed you, 'Joe Shmo Blogger', to make a wiz-bang gadget with little or no understanding of how it really works! From my standpoint as a professional, I would definitely be proud if something I had created had such ramifications! Let credit be given where credit is REALLY due... BTW, the video was great! Really neat to hear what their initial vision for the platform was, and see what it has become!
    That being said, long live the Arduino, and may more powerful minions of creativity rise after it to bring greater power to the masses to build their dreams upon! O all of you embedded 'Haters' out there, and even my self to some degree, create stuff to enable those around you to grow their skills and enjoyment in the world that we have enjoyed for so long!

  • While I applaud the fact that somebody who has little or no experience with hardware and can write some basic software can now write micro-controller applications, I still think that the Arduino has not really helped people learn electronics, even though it has exposed more people to them.
    It used to be, and still is the case with approximately 90-95% of embedded work, that the programmer must have an intimate understanding of the hardware and how it functions, in order to make truly functional and stable software for a micro-controller.
    The thing the Arduino does is abstract and remove the need for a most of the hardware level understanding, helping to make the process easier for one who does not understand it. This is good for beginners, but has an unfortunate side effect of creating the illusion of competency, and sometimes masking the lack of skills and deeper understanding that are really needed to do embedded design.
    Sadly, most everybody who uses the Arduino will never move beyond it, and will limit themselves in what they can really do with a micro-controller and electronics because they simply won't dive a little deeper into things.
    Then, Sadly, they will all promote the Arduino as the only end-all fix-all of the embedded world, and the real art of actually writing micro-controller software will fade into obscurity, and the movement will forget where it came from!

  • wow! Bang! Gone! They are invincible! This is a steal guys! I used to work at a electronics fab plant, and we always had 'goody bins' as we called them. Lots of useful parts if your into doing SMT stuff! Too bad I didnt get one in time! I hope you guys keep this up.... What you should do is throw one in for every order over x dollars, or randomly if the person checks an option stating they would like the chance for one on check out, so you might get a surprise when you open your box!

  • bsmithyman is right. It does not matter how sensitive the DAC is if the sensor cant even 'see' the signal! In the tutorial write-up, orcinus mentions the mass of the sensing element as a factor as well. The detectable frequency and the mass are directly related to one another. In fact, like orcinus says, tuning a piezo-resistive sensor with a large mass may work quite well if you orient it properly!<br />
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    None the less, a really fun idea! I have wanted to build a device to detect subsonic and seismic events for while now, and have not been able to locate or fabricate a suitable sensor as of yet! Something tells me I should re-visit it!