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FDC1004 measure of sweat on palms

Other Parts Discussed in Thread: FDC1004

Using FDC1004, I want to measure quantity of sweat on palms.

When I am going to measure it, a sensor is saturated

I demand an idea

  • Hi Kojima,

    if you touch the sensor with your hand, the capacitance will exceed the 15pf (which is the max value the FDC1004 can convert).

    The human body has a huge capacitance vs. GND.

    regards,

    Domenico

  • It is understood that a sensor is saturated by an experiment.

    Because I want to pick up a small change, FDC1004 is most suitable.

    We utilize a shield and think whether you cannot cancel capacitance of the human body.

    If the way of the shield includes an idea, please give me it.