Neopixel Pulse

pulse.ino

#include <Adafruit_NeoPixel.h>

// LED connected to digital pin 6
int dataPin = 6;           
#define NUMPIXELS          15
#define MAXIMUM_BRIGHTNESS 255
#define MEDIUM_BRIGHTNESS  130
#define LOW_BRIGHTNESS     100

int maxBrightness = 255;
int minBrightness = 80;
boolean isPulsing = true;

Adafruit_NeoPixel pixel = Adafruit_NeoPixel(NUMPIXELS, dataPin);

void setup() {
  Serial.begin(115200);

  pixel.begin(); // This initializes the NeoPixel library.
  setLightsToColor(0, 100, 255);
  // turn off neopixel
  turnOffLights();
}

void loop() {
  if (isPulsing) {
    pulse();
  }
}

void pulse() {
  // fade in
  for (int x = minBrightness; x < MAXIMUM_BRIGHTNESS; x++) {
    setLightsToBrightness(x);
  }
  // fade out
  for (int x = MAXIMUM_BRIGHTNESS; x >= minBrightness; x--) {
    setLightsToBrightness(x);
  }
}

void solid() {
  setLightsToBrightness(maxBrightness);
}

void turnOffLights() {
  setLightsToBrightness(0);
}

void setLightsToColor(int red, int green, int blue) {
  for (uint8_t i = 0; i < NUMPIXELS; i++) {
    pixel.setPixelColor(i, pixel.Color(red, green, blue));
  }
}

void setLightsToBrightness(int brightness) {
  pixel.setBrightness(brightness);
  setLightsToColor(0, 100, 255);
  pixel.show();
}