/* Fingertip Sensor 
 one thermistor and 6 resistive touch points on a fingertip
 reading temperature and touch data fron the sensor
 Dincer Hepguler, 2017
*/
int ThermistorPin = A0;
int TouchPin1 = A1;
int TouchPin2 = A2;
int TouchPin3 = A3;
int TouchPin4 = A4;
int TouchPin5 = A5;
//int TouchPin6 = A6;

int Vo;
int V1;
int V2;
int V3;
int V4;
int V5;
//int V6;
float R1 = 10000;
float logR2, R2, T;
float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;

void setup() {
Serial.begin(57600);
pinMode(TouchPin1,INPUT);
pinMode(TouchPin2,INPUT);
pinMode(TouchPin3,INPUT);
pinMode(TouchPin4,INPUT);
pinMode(TouchPin5,INPUT);
//pinMode(TouchPin6,INPUT);
}

void loop() {

  Vo = analogRead(ThermistorPin);
  V1 = analogRead(TouchPin1);
  V2 = analogRead(TouchPin2);
  V3 = analogRead(TouchPin3);
  V4 = analogRead(TouchPin4);
  V5 = analogRead(TouchPin5); 
  //V6 = analogRead(TouchPin6); 
  R2 = R1 * (1023.0 / (float)Vo - 1.0);
  logR2 = log(R2);
  T = (1.0 / (c1 + c2*logR2 + c3*logR2*logR2*logR2));
  T = T - 273.15;
  //T = (T * 9.0)/ 5.0 + 32.0; 

  Serial.print("Temp: "); 
  Serial.print(T);
  Serial.print(" C"); 
  Serial.print(" ");
  Serial.print(V1);
  Serial.print(" ");
  Serial.print(V2);
  Serial.print(" ");
  Serial.print(V3);
  Serial.print(" ");
  Serial.print(V4);
  Serial.print(" ");
  Serial.print(V5);
  //Serial.print(" ");
  //Serial.print(V6);
  Serial.println();
  delay(100);
}