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

#define ONE_WIRE_BUS 2

LiquidCrystal lcd(12,11,10,9,8,7);
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);
float tempC = 0;
char grados=223;
float set_temp=18 ;

byte Alien[] = {
  B11111,
  B10101,
  B11111,
  B11111,
  B01110,
  B01010,
  B11011,
  B00000
};

byte Blanco[] = {
  B00000,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000,
  B00000
};
byte Alien2[] = {
  B11111,
  B10101,
  B11111,
  B11111,
  B01110,
  B01011,
  B11000,
  B00000
};
void setup() 
{
  pinMode(13, INPUT); 
  pinMode(3, OUTPUT); 
  sensors.begin();           //Inicializa los sensores
  lcd.begin(20, 4);          //Inicializa la librería
  lcd.clear();
  lcd.setCursor(1,0);       //Columna=1,Fila=0
  lcd.print("ACTUAL T:");
  lcd.setCursor(16,0); 
  lcd.print(grados);
  lcd.print("C");  
  lcd.setCursor(1,1); 
  lcd.print("AJUSTE T:");
  lcd.setCursor(16,1); 
  lcd.print(grados);
  lcd.print("C"); 
  Serial.begin (9600);
  lcd.createChar(0, Alien);
  lcd.createChar(2, Alien2);
  lcd.createChar(1,Blanco);

}

void loop() 
{
  int value=analogRead(A0);
  set_temp=map(value,0,1023,15,26); //Ajuste entre 15 y 26 grados
  sensors.requestTemperatures();     // Mide la temperatura  
  tempC = sensors.getTempCByIndex(0);  
   
  Serial.println(tempC);  
  Serial.println(set_temp); 
  lcd.setCursor(11,0);               
  lcd.print(tempC,1);         //Imprime el valor leido, 1 decimal
  lcd.setCursor(11,1);
  lcd.print(set_temp,1);

  for(int i = 0; i< 20; i++)
  {
   lcd.setCursor(i,4); 
   lcd.write(byte(0)); 
   delay(300); 
   lcd.setCursor(i,4);
   lcd.write(byte(2)); 
   delay(300);
   lcd.setCursor(i,4);
   lcd.write(byte(1)); 
  }
  
  if(set_temp>tempC)
  {
      digitalWrite(3, HIGH); //Si la T.ajustada es mayor conectar rele
  }
  else
  {
      digitalWrite(3,LOW);
  }
}