ArduinoDue + Thermistor EPCOS NTC 3950 100K

Other Hardware Sensors
1

Hello!

When reading of the thermistor to the analog port of Arduino, an analog value is 4095, so the temperature is equal to 0.

My function is to calculate the temperature:

double getTemperature (int adc)

{

  • analogReadResolution (10);*
    _ long resistance = (100,000 * (4095 / adc - 1));_
  • double result = log (resistance);*
  • unsigned int A = 0.000541774592748;*
  • unsigned int B = 0.000238870735000;*
  • unsigned int C = 0.000000048293022;*

_ result = 1.0 / (A + (B * result) + (C * result * result * result)); _

  • result = result - 273.15; // Convert to Celsius*

}

Can anyone suggest a way out of this situation?

2

unsigned int A = 0.000541774592748;
unsigned int B = 0.000238870735000;
unsigned int C = 0.000000048293022;

Try float..