GSR sensor with Raspberry Pi : calibrating, values, unit

Products & Technology Raspberry Pi
#1

Hi! I have two questions about GSR sensor connected to Raspberry Pi.

  1. Do I need to calibrate it just like in case of using it with Arduino ? (Grove - GSR Sensor - Seeed Wiki )
  2. I get values approx. 400 with fingers in the sensor, I want to get values in ohms,not in volts, can I use this equation : Human Resistance = ((1024+2*Serial_Port_Reading)*10000)/(512-Serial_Port_Reading) ?