//https://viereck.ch/ntc/
 //Input voltage
 float inputVoltage = 3.3;
 //Serial resistance, KOhm
 float R1 = 4.7;
 //Thermistor resistance, KOhm
 float ntcR25 = 100;
 //Thermistor Beta coefficient
 float ntcBeta = 3950;
 float minVoltage = 0.000;
 float maxVoltage = 3.300;
 float maxValue = 1024;
 float rNtc;
 int analogPin = A0;
 int T1;   

void setup() {
Serial.begin(9600); 
}

void loop() 
{
  T1 = GetTemperature(inputVoltage, R1, ntcR25, ntcBeta, minVoltage, maxVoltage, maxValue, analogPin);
  Serial.println("Calculated Temperature " + String(T1));
}


int GetTemperature(float inputVoltage, float R1, float ntcR25, float ntcBeta, float minVoltage, float maxVoltage, float maxValue, int analogPin)
{
	int value = 0;
	value = analogRead(analogPin);
  
	Serial.println("ADC Output " + String(value));

	float measuredVoltage = value / maxValue * (maxVoltage - minVoltage) + minVoltage;
  float rNtc = measuredVoltage * R1 / (inputVoltage - measuredVoltage);
  float temperature = 1 / (log(rNtc / ntcR25) / ntcBeta + 1 / (273.15 + 25)) - 273.15;
  
	return temperature;
}