pylon:
Get two resistors with known resistance and attach them instead of the skin sensor to the breakout board. Note the two values, the interpolation should be linear.Excuse me but this is bullshit. The GSR Grove sensor includes three op amps to boost the voltage to a level the Arduino is able to measure. The board also has a potentiometer to adjust the value. So the equation almost most include calibration values measured on the actual board settings.
attach them instead of skin sensor you mean in A0 analog pin ? because that where the sensor goes also where i will i attach sensor on the board after it?
here is the sensor two wires on voltage and ground and one on analog A0
