When constructing sensors, remember your three variables:

  • Distance: Resistance increases over distance no matter what the material
  • Pressure: Some materials are pressure sensitive will decrease in resistance when pressure is applied to them.
  • Surface Area: Increasing the size of the area for electricity to flow will decrease the resistance. For example, a foot of resistive thread in a line would be more resistive than a foot of the same thread that is stitched close together.

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