#include <OneWire.h> 
#include <DallasTemperature.h>

#define ONE_WIRE_BUS 2 
OneWire oneWire(ONE_WIRE_BUS); 
DallasTemperature sensors(&oneWire);
void setup(void) 
{ 
 Serial.begin(9600); 
 Serial.println("SMART WATER IoT (Koutkou-Hidri-Skouloufianakis)\n"); 
 sensors.begin(); 
} 
void loop(void) 
{ 
   //TEMPERATURE SENSOR
 sensors.requestTemperatures(); 
 Serial.print("Temperature is:  "); 
 Serial.print(sensors.getTempCByIndex(0)); 
 Serial.println(" °C");
  
   //TURBIDITY SENSOR
  int sensorValue = analogRead(A0);
  float voltage = sensorValue * (5.0 / 1024.0);
  float ntu = -1120.4*square(voltage)+ 5742.3*voltage - 4352.9;
 
  Serial.print ("Turbidity   is:  ");
  Serial.print (voltage);
  Serial.print (" V    ");
  Serial.print (ntu);
  Serial.println (" NTU\n");
  delay(1500);
}