//librerias 
//libreria del lcd
#include <LiquidCrystal_I2C.h>
#define I2C_ADDR    0x27
#define LCD_COLUMNS 20
#define LCD_LINES   4
LiquidCrystal_I2C lcd(I2C_ADDR, LCD_COLUMNS, LCD_LINES);

//LIBRERIAS DEL DS18B
#include <OneWire.h>
#include <DallasTemperature.h>
const int oneWireBus = 5;  //definimos el pin que usara nuestro sensor
OneWire oneWire(oneWireBus);
DallasTemperature sensors(&oneWire);
#define led1 25

// POTENCIOMETRO 
LiquidCrystal_I2C LCD = LiquidCrystal_I2C(0x27, 16, 2);

#define pot 13
//ntc
const float BETA = 3950;
#define ntcc 15
#define led 14

//variables
 int analogValue;
 float celsius;
 float temperatureC;
 int sensorValue = 0;

void setup() {
  Serial.begin(9600);
  //SENSOR18B 
  sensors.begin();//activa el sensor  
  pinMode(led1, OUTPUT);
  //POTENCIOMETRO 
 pinMode(pot, INPUT);//PIN DEL POTENCIOMETRO 
  LCD.init();
  LCD.backlight();
  //ntc
   analogReadResolution(10);
  pinMode(ntcc,INPUT);//pin del ntc
  pinMode(led, OUTPUT);// pin del led 
}

void loop() {
msj();
ntc();
potenciometro();
ds18b();

}

void msj(){
   //LCD
  lcd.init();
  lcd.backlight();
  lcd.setCursor(0, 0);
  lcd.print("CONTROL DE SENSORES");
}

void ntc(){
  //variables del ntc 
 analogValue = analogRead(ntcc);
 celsius = 1 / (log(1 / (1023. / analogValue - 1)) / BETA + 1.0 / 298.15) - 273.15;
  //monitor serial 
  Serial.print("Temp1: ");
  Serial.print(celsius+0.01);
  Serial.println(" ℃");
  if(celsius>=30)
    digitalWrite(led, HIGH); 
  else
    digitalWrite(led, LOW);
  delay(100);

//lcd
 lcd.setCursor(0,1);
  lcd.print("Temp1:");
  lcd.print(celsius+0.01);

}

void ds18b(){
lcd.setCursor(0, 3);
  //variable temperatura ds18b20
  sensors.requestTemperatures(); 
  temperatureC = sensors.getTempCByIndex(0);

  // lcd
  lcd.print("Temp2: "); 
   if (temperatureC >= 40) {
     lcd.print("NOVEDAD!!");
    digitalWrite(led1, HIGH);
  } else {
    lcd.print ("S/N      ");
    digitalWrite(led1, LOW);
  delay(100);
}
 //monitor serial
  Serial.print("temp2:");
  Serial.print(temperatureC);
  Serial.println("ºC ");
 
}
 


void potenciometro(){
  //variable potenciometro 
sensorValue = analogRead(pot);
//presentacion en lcd 
    LCD.setCursor(0,2);
    LCD.print("POT: ");
    LCD.print(sensorValue);
    //monitor serial
   sensorValue=analogRead(pot);
    Serial.print("pot:");
   Serial.println(sensorValue);
   delay(100);
}