///////THERMIS////
#include <math.h>

float A = 1.009249522e-03, B = 2.378405444e-04, C = 2.019202697e-07;

float T,logRt,Tf,Tc;

float Thermistor(int Vo) {

 logRt = log(10000.0*((1024.0/Vo-1))); 

 T = (1.0 / (A + B*logRt + C*logRt*logRt*logRt));  // We get the temperature value in Kelvin from this Stein-Hart equation

 Tc = T - 273.15;                     // Convert Kelvin to Celcius

 Tf = (Tc * 1.8) + 32.0;              // Convert Kelvin to Fahrenheit

 return T;

}
///////////////

///////PIR///
const int PIR_SENSOR_OUTPUT_PIN =A0;	/* PIR sensor O/P pin */
int warm_up;
////////
 
void setup()
{
  pinMode(13, OUTPUT);
///////PIR////
  {
   pinMode(PIR_SENSOR_OUTPUT_PIN, INPUT);
   Serial.begin(9600);	/* Define baud rate for serial communication */
   delay(500);	/* Power On Warm Up Delay */
  }
///////////
}

void loop() 
{
{



   Serial.print("Temp:");
   Serial.print(Thermistor(analogRead(A1)));
   Serial.print("k ");

    Serial.print((Tc));

    Serial.print(" C ;");
    Serial.print((Tf));

    Serial.print(" F");
    
    

 delay(800);

}


 
{
  
       int sensor_output;
      sensor_output = digitalRead(PIR_SENSOR_OUTPUT_PIN);
       if( sensor_output == LOW )
  {
      if( warm_up == 1 )
    {
      
      Serial.print("        Warming Up\n\n");
      warm_up = 0;
      delay(2000);
    }
    digitalWrite(13, LOW);    // turn the LED on by making the voltage HIGH
    Serial.print("          No object in sight\n\n");
    delay(1000);
  }
  else
  {
    digitalWrite(13, HIGH);    // turn the LED off by making the voltage LOW
    Serial.print("         Object detected\n\n");    
    warm_up = 1;
    delay(1000);
  }  

}
}