#include <Adafruit_NeoPixel.h>
/*
    Max Korrad Team
    https://www.facebook.com/groups/883620498953478
    
*/
 
#define PIN 6
 
Adafruit_NeoPixel strip = Adafruit_NeoPixel(16, PIN, NEO_GRB + NEO_KHZ800);

int  incomingNumber;   // numero trasmesso
char Data[8];  // buffer per la stringa trasmessa
int i;

void setup() 
{ Serial.begin(9600);
  strip.begin();
  strip.show(); // Initialize all pixels to 'off'
}

int state=0,y;
unsigned long int color;
char empty;

void loop() {
  
  switch(state)
  { case 0:
      
      Serial.println("Inserisci un numero fra 1 e 360");
      while (Serial.available() == 0) { }                             // Wait for user input
      incomingNumber  = Serial.parseInt();
      empty= Serial.read();
      if (incomingNumber > 0 && incomingNumber <=360) state=2;
      break;
    case 1: // debug
      Serial.println(incomingNumber);
      state=2;
      break;
    case 2:
      y = map(incomingNumber, 0, 360, 0, 16);
      color=strip.Color(255, 0, 0);
      for(uint16_t i=0; i<=y; i++) {
      strip.setPixelColor(i,color);
      strip.show();
      delay(100);
      }
      delay(500);
      color=strip.Color(0, 0, 0);
      for(uint16_t i=y; i>0; i--) {
      strip.setPixelColor(i,color);
      strip.show();
      delay(100);
      }
      strip.setPixelColor(0, color);
      strip.show();
      state=0;
      break;
    default:
      Serial.println("Error");
      state=0;
      break;
  }
  }