Thermistor Demo

Source: temperature_thermistor_demo.ino
Prerequisites: thermistor circuit and calibration constants.
Shows: ADC read, resistance/temperature conversion, encoded chain submission.

Code


int raw = analogRead(SENSOR_PIN);
float resistance = SERIES_RESISTOR * ((4095.0f / (float)raw) - 1.0f);
 
float steinhart = resistance / THERMISTOR_NOMINAL;
steinhart = logf(steinhart);
steinhart /= BETA_COEFFICIENT;
steinhart += 1.0f / (TEMPERATURE_NOMINAL + 273.15f);
steinhart = 1.0f / steinhart;
 
int64_t tempX100 = (int64_t)((steinhart - 273.15f) * 100.0f);