// PULSO NARANJA
#define Pot 35
#define Ledpot 4
const float Res = 4895.9;
const float Vmax = 3.3;

// LCD VERDE
#include <LiquidCrystal_I2C.h>
#define direction 0x27
#define col 16
#define ren 2
LiquidCrystal_I2C lcd(direction, col, ren);

// HUMEDAD GRIS
#include "DHT.h"
#define SENSOR 23
#define DHTTYPE DHT22
DHT dht(SENSOR, DHTTYPE);

// DISTANCIA AZUL
#define tri 12
#define eco 14
void setup() {
  Serial.begin(115200);
  lcd.init();
  lcd.backlight();
  pinMode(Ledpot, OUTPUT);
  pinMode(eco, INPUT);
  pinMode(tri, OUTPUT);
}

void loop() {
  // PULSO
  int x = analogRead(Pot);
  float volt = (x * Vmax) / Res;
  float luz = ((x * 255) / 4095);
  analogWrite(Ledpot, luz);
  Serial.println("Valor Pot: " + String(x));
  Serial.println("Voltage: " + String(volt));

  // HUMEDAD Y HUMEDAD
  float h = dht.readHumidity();
  // Read temperature as Celsius (the default)
  float t = dht.readTemperature();
  //float lectura = dht.getTempAndHumid();
  Serial.println("Temperatura[Celsius]: " + String(t, 2) + "°");
  Serial.println("Humidty: " + String(h, 1) + "%");
  delay(3000); // Wait for a new reading from the sensor (DHT22 has ~0.5Hz sample rate)

  // DISTANCIA
  digitalWrite(tri, LOW);
  digitalWrite(tri, HIGH);
  delayMicroseconds(10);
  digitalWrite(tri, LOW);
  long tiempo = pulseIn(eco, HIGH);
  long distancia = tiempo * 0.034 / 2;
  Serial.println("distancia: ");
  Serial.println(distancia);
  Serial.println("tiempo: ");
  Serial.println(tiempo);

  // LCD
  lcd.setCursor(0, 0);
  lcd.print("Pulso cardiaco");
  lcd.setCursor(0, 1);
  lcd.print(volt);
  lcd.clear();
  delay(1000);

  lcd.setCursor(0, 0);
  lcd.print("Humedad");
  lcd.setCursor(0, 1);
  lcd.print(String(h, 1));
  lcd.clear();
  delay(1000);

  lcd.setCursor(0, 0);
  lcd.print("Temperatura");
  lcd.setCursor(0, 1);
  lcd.print(String(t, 2));
  lcd.clear();
  delay(1000);

  lcd.setCursor(0, 0);
  lcd.print("distancia");
  lcd.setCursor(0, 1);
  lcd.print(distancia);
  lcd.clear();
  delay(1000);
}