// the value of the 'other' resistor #define SERIESRESISTOR 10000 // What pin to connect the sensor to #define THERMISTORPIN A0 void setup(void) { Serial.begin(9600); } void loop(void) { float reading; reading = analogRead(THERMISTORPIN); Serial.print("Analog reading "); Serial.println(reading); // convert the value to resistance reading = (1023 / reading) - 1; // (1023/ADC - 1) reading = SERIESRESISTOR / reading; // 10K / (1023/ADC - 1) Serial.print("Thermistor resistance "); Serial.println(reading); delay(1000); }