Below is the animation code we used for the headphones, which is just a very minor modification to the standard strandtest sketch, altered to wipe the pixels to various colors. Copy and paste this code into the Adafruit Arduino IDE:
#include <Adafruit_NeoPixel.h> // Parameter 1 = number of pixels in strip // Parameter 2 = pin number (most are valid) // Parameter 3 = pixel type flags, add together as needed: // NEO_RGB Pixels are wired for RGB bitstream // NEO_GRB Pixels are wired for GRB bitstream // NEO_KHZ400 400 KHz bitstream (e.g. FLORA pixels) // NEO_KHZ800 800 KHz bitstream (e.g. High Density LED strip) Adafruit_NeoPixel strip = Adafruit_NeoPixel(14, 6, NEO_GRB + NEO_KHZ800); void setup() { strip.begin(); strip.show(); // Initialize all pixels to 'off' } void loop() { // Some example procedures showing how to display to the pixels: colorWipe(strip.Color(255, 0, 0), 50); // Red colorWipe(strip.Color(0, 255, 0), 50); // Green colorWipe(strip.Color(200, 0, 218), 50); // Blue colorWipe(strip.Color(17, 249, 230), 50); // Blue colorWipe(strip.Color(235, 249, 17), 50); // Blue colorWipe(strip.Color(17, 93, 249), 50); // Blue colorWipe(strip.Color(255, 164, 56), 50); // Blue colorWipe(strip.Color(255, 56, 112), 50); // Blue colorWipe(strip.Color(56, 164, 255), 50); // Blue colorWipe(strip.Color(255, 56, 140), 50); // Blue //rainbow(20); //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); } } void rainbow(uint8_t wait) { uint16_t i, j; for(j=0; j<256; j++) { for(i=0; i<strip.numPixels(); i++) { strip.setPixelColor(i, Wheel((i+j) & 255)); } strip.show(); delay(wait); } } // Slightly different, this makes the rainbow equally distributed throughout void rainbowCycle(uint8_t wait) { uint16_t i, j; for(j=0; j<256*5; 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) { if(WheelPos < 85) { return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0); } else if(WheelPos < 170) { WheelPos -= 85; return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3); } else { WheelPos -= 170; return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3); } }