#define BLYNK_PRINT Serial


#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#define TRIGGERPIN D1
#define ECHOPIN    D2
#define verde   D7
#define azzurra D5
#define rosso D6


char auth[] = "zox3YpV6f4ZphvoU5lDERX6T6YbZlXXl";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "luna_notte";
char pass[] = "casaluna";

void setup()
{
  // Debug console
  Serial.begin(9600);
  pinMode(verde, OUTPUT);
  pinMode(azzurra, OUTPUT);
  pinMode(rosso, OUTPUT);
  pinMode(TRIGGERPIN, OUTPUT);
  pinMode(ECHOPIN, INPUT);
  Blynk.begin(auth, ssid, pass);
  // You can also specify server:
  //Blynk.begin(auth, ssid, pass, "blynk-cloud.com", 8442);
  //Blynk.begin(auth, ssid, pass, IPAddress(192,168,1,100), 8442);


}

void loop()
{
  long duration, distance;
  digitalWrite(TRIGGERPIN, LOW);
  delayMicroseconds(3);

  digitalWrite(TRIGGERPIN, HIGH);
  delayMicroseconds(12);

  digitalWrite(TRIGGERPIN, LOW);
  duration = pulseIn(ECHOPIN, HIGH);
  distance = (duration/2) / 29.1;
  Serial.print(distance);
  Serial.println("Cm");

  if (distance<32) //LUCE VERDE
  {
  digitalWrite(verde, 125);
  digitalWrite(azzurra, 0);
  digitalWrite(rosso, 0);
  }
  else //LUCE GIALLA
  if  ((distance<50) and (distance>32)) {
    digitalWrite(azzurra, 0);
    digitalWrite(verde, 125);
    digitalWrite(rosso, 100);
  }
  else
  if (distance>50) //LUCE ROSSA
  {
    digitalWrite(rosso, 125);
    digitalWrite(verde, 0);
    digitalWrite(azzurra, 0);
    }

  Blynk.virtualWrite (V0, distance);
  Blynk.run();

  delay(3500);

}