Arduino-Thermistor mf58-104f3950k

Thermistor Connection method:

Resistance:

/ 
 * * thermistor model is NTC glass-sealed thermal resistor mf58-104f 3950K interpolation 100K accuracy 1% b value 3950
 * Room temperature 25 degrees Celsius (298.15K) resistance is 100k euro 
*/  
#include < math.h>  

const float voltagepower=5;  
Const FLOAT rs=100;//Sample resistor is 100,000 kohm  
const int b=3950;  
Const double t1=273.15+25;//room temperature  
const double r1=100;//room temperature corresponding resistance, note Unit is the thousand Euro  


Void Setup () {  
  serial.begin (9600);  
}  

void Loop () {  

  //Get the voltage value at A0  
  double digitalvalue=analogread (0);  
  Double voltagevalue= (digitalvalue/1023);  
  Serial.print ("Current voltage value=");  
  Serial.println (voltagevalue);  

  The resistance of the thermistor to  
  double rt= ((voltagepower-voltagevalue) *rs)/voltagevalue is obtained by the voltage divider ratio;  
  Serial.print ("Current Registor value=");  
  Serial.println (Rt);  

  The temperature value of  
  serial.print ("Current temperature value=") is calculated.  
  Serial.println (((t1*b)/(B+t1*log (RT/R1)) -273.15);//  
  serial.println ();  

  Delay (+);  

}