How Easy Is It to Use a Thermistor?!

1//Thermometer with thermistor
2
3/*thermistor parameters:
4 * RT0:  10 000 Ω
5 * B: 3977 K +- 0.75%
6 * T0:  25 C
7 * +- 5%
8 */
9
10//These  values are in the datasheet
11#define RT0 10000   // Ω
12#define B 3977      //  K
13//--------------------------------------
14
15
16#define VCC 5    //Supply  voltage
17#define R 10000  //R=10KΩ
18
19//Variables
20float RT, VR, ln, TX,  T0, VRT;
21
22void setup() {
23  Serial.begin(9600);
24  T0 = 25 + 273.15;                 //Temperature  T0 from datasheet, conversion from Celsius to kelvin
25}
26
27void loop() {
28  VRT = analogRead(A0);              //Acquisition analog value of VRT
29  VRT  = (5.00 / 1023.00) * VRT;      //Conversion to voltage
30  VR = VCC - VRT;
31  RT = VRT / (VR / R);               //Resistance of RT
32
33  ln = log(RT / RT0);
34  TX = (1 / ((ln / B) + (1 / T0))); //Temperature from thermistor
35
36  TX =  TX - 273.15;                 //Conversion to Celsius
37
38  Serial.print("Temperature:");
39  Serial.print("\	");
40  Serial.print(TX);
41  Serial.print("C\	\	");
42  Serial.print(TX + 273.15);        //Conversion to Kelvin
43  Serial.print("K\	\	");
44  Serial.print((TX * 1.8) + 32);    //Conversion to Fahrenheit
45  Serial.println("F");
46  delay(500);
47
48}
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