LED_Strip_Neopixel.ino

#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
  #include <avr/power.h>
#endif
#define PIN 4
Adafruit_NeoPixel strip = Adafruit_NeoPixel(60, PIN, NEO_GRB + NEO_KHZ800);

void setup() {
  strip.begin();
  strip.setBrightness(20);
  strip.show(); // Initialize all pixels to 'off'
  delay(30);
  colorWipe(strip.Color(255, 0, 0), 10); // Red
  colorWipe(strip.Color(0, 255, 0), 10); // Green
  colorWipe(strip.Color(0, 0, 255), 10); // Blue
  colorWipe(strip.Color(255, 255, 255), 10); // White
  rainbowStart(10);
}

void loop() {
  rainbowCycle(20);
}

// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<strip.numPixels(); i++) {
    strip.setPixelColor(i, c);
    strip.show();
    delay(wait);
  }
}

// From the colorWipe boot sequence, start the rainbow
void rainbowStart(uint8_t wait) {
  uint16_t i, j;
  for(i=0; i< strip.numPixels(); i++) {
    strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + 256*5-1) & 255));
    strip.show();
    delay(wait);
  }
}

// cycle the rainbow
void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=256*5-1; j>=0; j--) { // 5 cycles of all colors on wheel
    for(i=0; i< strip.numPixels(); i++) {
      strip.setPixelColor(i, Wheel(((i * 256 / strip.numPixels()) + j) & 255));
    }
    strip.show();
    delay(wait);
  }
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}