PiraNeopixelring.ino

#include <Adafruit_NeoPixel.h>
#define PIN 0
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(32, PIN);


// Change These Variables
int maxBrightness = 70;
int minBrightness = 0;
int fadeSpeed = 25;

uint8_t  mode   = 0, // Current animation effect
         offset = 0; // Position of spinny eyes
uint32_t color  = 0xff0000; // Start red
uint32_t prevTime;


void setup() {
  pixels.begin();
  prevTime = millis();
}

void loop() {
  
  uint8_t  i;
  uint32_t t;
 
  switch(mode) {
    
    case 0:
     //Set the color with Red, Gree, Blue values
     pulseColor(pixels.Color(58, 9, 115), fadeSpeed); 
     pixels.show();
     delay(75);
     break;
     
    case 1: // Random sparks - just one LED on at a time!
     pixels.setBrightness(30); // 1/3 brightness
     i = random(32);
     pixels.setPixelColor(i, 0xffffff);
     pixels.setPixelColor(31-i, 0xcc0000);
     pixels.show();
     delay(25);
     pixels.setPixelColor(i, 0);
     pixels.setPixelColor(31-i, 0);
     break;
  }
     
  t = millis();
  if((t - prevTime) > 10000) {      // Every 8 seconds...
    mode++;                        // Next mode
    if(mode > 1) {                 // End of modes?
      mode = 0;                    // Start modes over
    }
    for(i=0; i<32; i++) pixels.setPixelColor(i, 0);
    prevTime = t;
  }

}


void pulseColor(uint32_t c, uint8_t wait) {
  //Increase Brightness / Fade In
  for(int i=minBrightness; i<maxBrightness; i++) {
      pixels.setBrightness(i);
      for(int x=0; x<pixels.numPixels(); x++){
        pixels.setPixelColor(x,c);
      }
      pixels.show();
      delay(wait);
  }
  //Lower Brightness / Fade Out
  for(int i=maxBrightness; i>minBrightness; i--) {
       pixels.setBrightness(i);
      for(int x=0; x<pixels.numPixels(); x++){
        pixels.setPixelColor(x,c);
      }
      pixels.show();
      delay(wait);
  }
}