// NeoPixel Ring simple sketch (c) 2013 Shae Erisson
// released under the GPLv3 license to match the rest of the AdaFruit NeoPixel library
// NeoPixel Strip sketch for max. 150 LEDs per one meter modified by Kati Pitkänen 17.4.2018
#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif

#define pinNeop            A3       // The pin on the Arduino connected to the NeoPixels for sending signals.
#define numberLEDs        150       // Number of NeoPixels attached to the Arduino.

Adafruit_NeoPixel pixels = Adafruit_NeoPixel(numberLEDs, pinNeop, NEO_GRB + NEO_KHZ800); // Telling the number of LEDs, the connection pin, pixel type flags:
                                                                                         // NEO_GRB     Pixels are wired for GRB bitstream)
                                                                                         // NEO_KHZ800  800 KHz bitstream (most NeoPixel products w/WS2812 LEDs
int delayval = 1000;                // Delay for a second

void setup() {

  pixels.begin();                   // Initializing the NeoPixel library.
  pixels.setBrightness(100);        // Value from 0 to 100%
}

void loop() {

   for(int i=0;i<numberLEDs;i++){   // For a set of 150 NeoPixels the first NeoPixel is 0, second is 1, all the way up to the count of pixels minus one (150 - 1).

    // pixels.Color can take RGB values [from 0,0,0 up to 255,255,255 [R, G, B]]
    pixels.setPixelColor(0, pixels.Color(255,0,0));     // Red
    pixels.setPixelColor(1, pixels.Color(255,75,0));    // Orange
    pixels.show();                                      // Updating all the LEDs and sending the pixel color to the hardware.
    delay(delayval);                                    // Setting a delay for a defined period of time to change the next LED (in milliseconds).
     
    pixels.setPixelColor(2, pixels.Color(255,255,0));   // Yellow
    pixels.setPixelColor(3, pixels.Color(0,255,0));     // Light green
    pixels.show();            
    delay(delayval);          
    
    pixels.setPixelColor(4, pixels.Color(255,255,255)); // White
    pixels.setPixelColor(5, pixels.Color(0,255,255));   // Light blue
    pixels.show();            
    delay(delayval);     

    pixels.setPixelColor(6, pixels.Color(0,55,255));    // Blue
    pixels.setPixelColor(7, pixels.Color(75,0,255));    // Purple
    pixels.show();            
    delay(delayval);    
  }
}