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Custom Pressure Sensor. Using Conductive Foam — Parallax Forums

Custom Pressure Sensor. Using Conductive Foam

EzsynnEzsynn Posts: 119
edited 2009-02-01 19:44 in Robotics
How does it work? And how do you connect it to your Basic Stamp Module?
If you know how to make it, can you include a diagram?

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BWIN ON DA POWAH WIFIN U!!!

Comments

  • Beau SchwabeBeau Schwabe Posts: 6,566
    edited 2009-02-01 15:00
    Ezsynn,

    What makes this work is that the conductive foam is comprised of tiny air pockets.· As the conductive foam is compressed, you increase the surface area between adjacent air pockets.· This effectively is like adding tiny resistors in parallel with one another in proportion to the amount of applied pressure.
    ·

    Check this thread out...
    http://forums.parallax.com/showthread.php?p=764574

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    Beau Schwabe

    IC Layout Engineer
    Parallax, Inc.
  • GWJaxGWJax Posts: 267
    edited 2009-02-01 16:58
    ah you beat me to it Beau!! Nice instructable that Phil did.. Good to see that here so I don't have to repeat it..

    Plus the best way to read it is to use your RCTIME circuit and replace the variable resistor with the touch pad leads and all the programming is the same for reading the voltage drop out of the cap.

    Jax

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    If a robot has a screw then it must be romoved and hacked into..
  • EzsynnEzsynn Posts: 119
    edited 2009-02-01 19:44
    Beau Schwabe (Parallax) said...
    Ezsynn,

    What makes this work is that the conductive foam is comprised of tiny air pockets. As the conductive foam is compressed, you increase the surface area between adjacent air pockets. This effectively is like adding tiny resistors in parallel with one another in proportion to the amount of applied pressure.


    Check this thread out...
    http://forums.parallax.com/showthread.php?p=764574

    Hey, that works. Thanks.

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    BWIN ON DA POWAH WIFIN U!!!
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