Touch Sliders With A Softpot + Arduino

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From: http://bildr.org/2012/11/touch-sliders- ... t-arduino/

You all know the potentiometer, you turn it, and you can read on your arduino where it was turned to. Well 3M makes a product called the softpot that is a linear touch potentiometer. So instead of turning a knob, you touch it.

The really nice thing about these is that they are great for prototypes because you can tell where someone touched it. So if you place a piece of paper with some printed buttons over it, you can mock up surface touch ...
ameyer
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Wouldn't you avoid the mentioned issue with the insertion of a simple resistor in the circuit ?
amundsen
 
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Kinda. You can add a resistor if you want. And I tried that, but you end up killing your resolution.

amundsen wrote:Wouldn't you avoid the mentioned issue with the insertion of a simple resistor in the circuit ?
ameyer
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The issue with touching the top and bottom at the same time is that you short the 5 volt to ground, thus high current and then burn out.
RobotHacker
 
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