#include <math.h>
#define trigPin 12
#define echoPin 13
//Schematic:
// [Ground] ---- [10k-Resister] -------|------- [Thermistor] ---- [+5v]
// |
// Analog Pin 0

double Thermistor(int RawADC) {
// Inputs ADC Value from Thermistor and outputs Temperature in Celsius
// requires: include <math.h>
// Utilizes the Steinhart-Hart Thermistor Equation:
// Temperature in Kelvin = 1 / {A + B[ln(R)] + C[ln(R)]^3}
// where A = 0.001129148, B = 0.000234125 and C = 8.76741E-08
long Resistance; double Temp; // Dual-Purpose variable to save space.
Resistance=((10240000/RawADC) - 10000); // Assuming a 10k Thermistor. Calculation is actually: Resistance = (1024 * BalanceResistor/ADC) - BalanceResistor
Temp = log(Resistance); // Saving the Log(resistance) so not to calculate it 4 times later. // "Temp" means "Temporary" on this line.
Temp = 1 / (0.001129148 + (0.000234125 * Temp) + (0.0000000876741 * Temp * Temp * Temp)); // Now it means both "Temporary" and "Temperature"
Temp = Temp - 273.15; // Convert Kelvin to Celsius // Now it only means "Temperature"

// BEGIN- Remove these lines for the function not to display anything
Serial.print("ADC: "); Serial.print(RawADC); Serial.print("/1024"); // Print out RAW ADC Number
Serial.print(", Volts: "); printDouble(((RawADC*4.860)/1024.0),3); // 4.860 volts is what my USB Port outputs.
Serial.print(", Resistance: "); Serial.print(Resistance); Serial.print("ohms");
// END- Remove these lines for the function not to display anything

// Uncomment this line for the function to return Fahrenheit instead.
Temp = (Temp * 9.0)/ 5.0 + 32.0; // Convert to Fahrenheit
return Temp; // Return the Temperature
}

void printDouble(double val, byte precision) {
// prints val with number of decimal places determine by precision
// precision is a number from 0 to 6 indicating the desired decimal places
// example: printDouble(3.1415, 2); // prints 3.14 (two decimal places)
Serial.print (int(val)); //prints the int part
if( precision > 0) {
Serial.print("."); // print the decimal point
unsigned long frac, mult = 1;
byte padding = precision -1;
while(precision--) mult *=10;
if(val >= 0) frac = (val - int(val)) * mult; else frac = (int(val) - val) * mult;
unsigned long frac1 = frac;
while(frac1 /= 10) padding--;
while(padding--) Serial.print("0");
Serial.print(frac,DEC) ;
}
}

void setup() {
Serial.begin(115200);
pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);


}

#define ThermistorPIN 1 // Analog Pin 0
double temp;



void loop() {
temp=Thermistor(analogRead(ThermistorPIN)); // read ADC and convert it to Celsius
Serial.print(", Celsius: "); printDouble(temp,3); // display Celsius
//temp = (temp * 9.0)/ 5.0 + 32.0; // converts to Fahrenheit
//Serial.print(", Fahrenheit: "); printDouble(temp,3); // display Fahrenheit
Serial.println(""); // End of Line
delay(100); // Delay a bit... for fun, and to not Serial.print faster than the serial connection can output

float newTemp = 1/((331.5+(temp*.6))/10000);
float duration, distance;
digitalWrite(trigPin, HIGH);
delayMicroseconds(1000);
digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH);
distance = (duration/2) / newTemp;
if (distance >= 200 || distance <= 0){
Serial.println("Out of range");
}
else {
Serial.print(distance);
Serial.println(" cm");
}
delay(500);


}