#include <HCSR04.h>

HCSR04 hc(2, 3); //Ultraschall Sensor an Pin 2 und 3 (trig pin , echo pin)

void setup()
  // Setup Code einmalig:
{
  Serial.begin(9600);
  pinMode(8, OUTPUT); // LED an PIN 8
}

void loop()

{
// Main Code wiederholend:
 
Serial.println ( hc.dist() ); //Aktuelle Distanz im Seriellen Monitor

if (hc.dist() > 15) {
   	digitalWrite(8, HIGH);
    delay(60);
    digitalWrite(8, LOW);
    delay(700);
  }
if (hc.dist() <= 15 && hc.dist() > 12) {
    digitalWrite(8, HIGH);
    delay(60);
    digitalWrite(8, LOW);
    delay(700);
  }
if (hc.dist() <= 12 && hc.dist() > 10) {
   	digitalWrite(8, HIGH);
    delay(60);
    digitalWrite(8, LOW);
    delay(500);
  }
if (hc.dist() <= 10 && hc.dist() > 8) {
    digitalWrite(8, HIGH);
    delay(60);
    digitalWrite(8, LOW);
    delay(300);
  }
if (hc.dist() <= 8 && hc.dist() > 6) {
   	digitalWrite(8, HIGH);
    delay(60);
    digitalWrite(8, LOW);
    delay(200);
}

if (hc.dist() <= 6 && hc.dist() > 4) {
   	digitalWrite(8, HIGH);
    delay(60);
    digitalWrite(8, LOW);
    delay(100);
}
if (hc.dist() <= 4 && hc.dist() > 2) {
   	digitalWrite(8, HIGH);
    delay(60);
    digitalWrite(8, LOW);
    delay(0);
}
if (hc.dist() <= 2) {
   	digitalWrite(8, HIGH);
    delay(60);
    digitalWrite(8, LOW);
    delay(0);
}
delay(100); // Wait for 100 millisecond(s)
}