Intro to Arduino and Blinky Lights

NeopixelBasic.ino

#include <Adafruit_NeoPixel.h>

// Constant values
#define DATA_PIN 6
#define NUM_LEDS 32

// Load NeoPixel library
Adafruit_NeoPixel strip = Adafruit_NeoPixel(NUM_LEDS, DATA_PIN, NEO_GRB + NEO_KHZ800);

// Set color variables
int colorChoose = 0;
int red = 255;
int green = 0;
int blue = 0;

void setup() {
  // Initialize led strip
  strip.begin();
  strip.show();
}

void loop() {
  
  // Loop over each LED
  for (int i = 0; i < NUM_LEDS; i++) {
      strip.setPixelColor(i, red, green, blue);
      strip.show();
      delay(20);
  }

  // Change the color for the next iteration
  colorChoose++;
  if (colorChoose == 1) {
    red = 0;
    green = 255;
    blue = 0;
  }
  else if (colorChoose == 2) {
    red = 0;
    green = 0;
    blue = 255;
  }
  else if (colorChoose == 3) {
    red = 255;
    green = 0;
    blue = 0;
    colorChoose = 0;
  }
}