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  • Yury Gitman 8:24 pm on September 16, 2008 Permalink | Reply  

    Reading For Next Class 

    Analog Read
    http://arduino.cc/en/Reference/AnalogRead

    Analog Write (PWM)
    http://arduino.cc/en/Reference/AnalogWrite

    http://arduino.cc/en/Tutorial/HomePage

    Analog Input: use a potentiometer to control the blinking of an LED.

    Fading: uses an analog output (PWM pin) to fade an LED.

    “Coffee-cup” Color Mixer:
    http://arduino.cc/en/Tutorial/LEDColorMixerWith3Potentiometers

    Lesson 3
    http://www.ladyada.net/learn/arduino/lesson3.html

     
  • Yury Gitman 4:12 pm on September 16, 2008 Permalink | Reply  

    Unbreakable Fisher-Price Elephant 

    I got a simple Fisher-Price Elephant toy, which starts/stops playing a tune when the user bops its head.  As for dissecting the toy…Well, let’s just say "simple" is not synonymous with "easy."  Given that it’s a baby-toy, I expected it to be firmly built; but I didn’t think it would be impossible to break it apart with a few hits with a hammer…

    1. Original Form: What appears to be a innocent little elephant.

    Cimg1627

    2. Opening the Battery Cover: There were two screws that secured the battery cover.Cimg1629
    Cimg1635Cimg1638

    3. No Other Screws!  Go for the Leg!: The two screws for the battery cover were the only ones that were visible on the exterior of the toy.  I decided to snap off the front-right leg in hopes of revealing more screws.
    However, once it was snapped off, I was able to see only one other screw, which was the screw that secured that opposite leg. 
    Cimg1644_2
    Cimg1645_2
    Cimg1648Cimg1651

    4. Get the Saw Out: After many attempts to snap the toy open with a hammer and a minus-screwdriver, I decided to carefully "shave" open the elephant with a saw.  However, it was taking too long, and my arms were getting tired, so I reverted back to the screwdriver and hammer…  I wasn’t getting too far, so Yuri eventually helped me loosen the parts and take all the legs off.
    Cimg1653_2
    Cimg1655

    Cimg1656
    Cimg1657

    5. Saw2: Even with all the legs off, I still couldn’t see much of its interior, so I made a small cut in front of its body.  Cimg1662
    The speaker was revealed as a result. 

    6. Bye Saw! Hello Giant Scissors! (I think they’re called Shears?): The small opening made in step 5 helped me see the inside a little bit better, but I still couldn’t access the "brain" that operated the toy.  As I began sawing again, Yuri found a better tool for me: Giant Scissors!  I was able to easily cut open the entire side of its body to finally reveal the inside.
    Cimg1672
    Cimg1674

    7. Closer Look: The toy functions mainly by three parts: a button, speaker and a microchip.  The head, once it’s pushes, pushes the button and triggers the microchip to play the tune out of the speaker.
    Cimg1691
    Elephantbtn

    Intparts

     
  • Yury Gitman 12:51 pm on September 16, 2008 Permalink | Reply  

    LOLS 

    Speaking of toys, I thought you’d all appreciate this:

    via icanhascheezburger.com

     
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