Arduino LED & sonar

led_distance.ino

#include <FastLED.h>
#include <QuickStats.h>
QuickStats stats;
// defining the pins
#define LED_PIN     7
#define NUM_LEDS    29
#define BRIGHTNESS  10
const int trigPin = 9;
const int echoPin = 10;
// defining variables
CRGB leds[NUM_LEDS];
float duration;
int distance;
int stopdistance=40; //int stopdistance=115; //parking position from sensor (CENTIMETERS)
int startdistance=100; //int startdistance=400; //distance from sensor to begin scan as car pulls in(CENTIMETERS) 
int increment=((startdistance-stopdistance)/15);
void setup() {
pinMode(trigPin, OUTPUT); // Sets the trigPin as an Output
pinMode(echoPin, INPUT); // Sets the echoPin as an Input
FastLED.addLeds<WS2812B, LED_PIN, GRB>(leds, NUM_LEDS);
Serial.begin(9600); // Starts the serial communication
}
void loop() {
    for (int i=0;i<=14;i++){
  FastLED.setBrightness(BRIGHTNESS);
  // The sensor is triggered by a HIGH pulse of 10 or more microseconds.
  // Give a short LOW pulse beforehand to ensure a clean HIGH pulse:
  digitalWrite(trigPin, LOW);
  delayMicroseconds(2);
  digitalWrite(trigPin, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPin, LOW);
 
  // Read the signal from the sensor: a HIGH pulse whose
  // duration is the time (in microseconds) from the sending
  // of the ping to the reception of its echo off of an object.
  pinMode(echoPin, INPUT);
  duration = pulseIn(echoPin, HIGH);
  // Convert the time into a distance
  distance = (duration/2) / 29.1;     // Divide by 29.1 or multiply by 0.0343
  
  Serial.print(distance);
  Serial.print("cm, ");
  Serial.print(increment);
  Serial.print(" increment variable");
  Serial.println();
  
  delay(150);
    }
  if (distance<stopdistance){
    for (int i = 0; i <= NUM_LEDS; i++) {
      leds[i] = CRGB (255,0,0);
      FastLED.show();
       }
  }
  else
  if (distance<stopdistance+increment){
    for (int i = 1; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 0; i++) {
      leds[i] = CRGB ( 255, 255, 0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*2){
    for (int i = 2; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 1; i++) {
      leds[i] = CRGB ( 255, 255, 0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*3){
     for (int i = 3; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 2; i++) {
      leds[i] = CRGB ( 255, 255, 0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*4){
     for (int i = 4; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 3; i++) {
      leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*5){
     for (int i = 5; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 4; i++) {
    leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*6){
     for (int i = 6; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 5; i++) {
     leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*7){
     for (int i = 7; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 6; i++) {
     leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*8){
     for (int i = 8; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 7; i++) {
      leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*9){
     for (int i = 9; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 8; i++) {
     leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*10){
     for (int i = 10; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 9; i++) {
      leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*11){
     for (int i = 11; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 10; i++) {
      leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*12){
     for (int i = 12; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 11; i++) {
      leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  
  if (distance<stopdistance+increment*13){
     for (int i = 13; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 12; i++) {
     leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance<stopdistance+increment*14){
     for (int i = 14; i <= NUM_LEDS; i++) {
      leds[i] = CRGB ( 0, 0, 0);
    }
   for (int i = 0; i <= 13; i++) {
     leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
  else
  if (distance>=stopdistance+increment*14){
   for (int i = 0; i <= NUM_LEDS; i++) {
     leds[i] = CRGB ( 0, 255,0);
    }
    FastLED.show();
    delay(50);
  }
}