// the value of the 'other' resistor
#define SERIESRESISTOR 560
// What pin to connect the sensor to
#define SENSORPIN A0
void setup(void) {
Serial.begin(9600);
}
void loop(void) {
float reading;
reading = analogRead(SENSORPIN);
Serial.print("Analog reading ");
Serial.println(reading);
// convert the value to resistance
reading = (1023 / reading) - 1;
reading = SERIESRESISTOR / reading;
Serial.print("Sensor resistance ");
Serial.println(reading);
delay(1000);
}
