Help with resistor

Discussion in 'General Electronics Chat' started by rickilambert, Oct 17, 2013.

  1. rickilambert

    Thread Starter New Member

    Oct 17, 2013
    2
    0
    Hi all, i am doing a little mini home project and have got little idea of where to begin with the resistor i need.

    I know i need something similar to this...


    [​IMG]

    The issue is, i want to run a few of these and identify which one is sending me a signal, that means i will need some way to assign the sensor an id.

    Any idea if there is such a thing - or can i add my own chip somehow to give it an id or what not

    thanks for your help
     
  2. shteii01

    AAC Fanatic!

    Feb 19, 2010
    3,387
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    Fascinating.
     
  3. Dodgydave

    Distinguished Member

    Jun 22, 2012
    4,979
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    I don't think its a resistor, more like a water or liquid sensor touch pad?
     
  4. rickilambert

    Thread Starter New Member

    Oct 17, 2013
    2
    0
    its a square force resistor?
     
  5. ScottWang

    Moderator

    Aug 23, 2012
    4,853
    767
    If you want to using the uC to input the signals from the sensors, maybe you could doing like this:
    8 sensors → LM324*2 8 comparators → CD4051 → uC.

    1. Assuming that you have 8 sensors, and you give each sensor an ID from 1 to 8.

    2. Using two LM324 Op Amp as 8 comparators, and setting the Vref(Voltage reference) to detecting the sensors from 1 to 8.

    3. Using the uC to selecting the output results of comparators from 1 to 8.

    It just a thought, so maybe you need to modify something.
     
  6. WBahn

    Moderator

    Mar 31, 2012
    17,726
    4,788
    You don't know what it is or what it does?

    Then how do you know that you need to use it?
     
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