// NeoPixel Ring simple sketch (c) 2013 Shae Erisson // released under the GPLv3 license to match the rest of the AdaFruit NeoPixel library #include <Adafruit_NeoPixel.h> #ifdef __AVR__ #include <avr/power.h> #endif // Which pin on the Arduino is connected to the NeoPixels? // On a Trinket or Gemma we suggest changing this to 1 #define PIN A4 // How many NeoPixels are attached to the Arduino? #define NUMPIXELS 16 // When we setup the NeoPixel library, we tell it how many pixels, and which pin to use to send signals. // Note that for older NeoPixel strips you might need to change the third parameter--see the strandtest // example for more information on possible values. Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800); int delayval = 200; // delay for half a second void setup() { // This is for Trinket 5V 16MHz, you can remove these three lines if you are not using a Trinket #if defined (__AVR_ATtiny85__) if (F_CPU == 16000000) clock_prescale_set(clock_div_1); #endif // End of trinket special code pinMode(13, OUTPUT); digitalWrite(13, LOW); pixels.begin(); // This initializes the NeoPixel library. } void loop() { // For a set of NeoPixels the first NeoPixel is 0, second is 1, all the way up to the count of pixels minus one. for (int i = 0; i < NUMPIXELS; i++) { // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255 pixels.setPixelColor(i, pixels.Color(0, 2, 0)); // Moderately bright green color. } pixels.show(); // This sends the updated pixel color to the hardware. delay(delayval); // Delay for a period of time (in milliseconds). for (int i = 0; i < NUMPIXELS; i++) { // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255 pixels.setPixelColor(i, pixels.Color(0, 0, 2)); // Moderately bright green color. } pixels.show(); // This sends the updated pixel color to the hardware. delay(delayval); // Delay for a period of time (in milliseconds). for (int i = 0; i < NUMPIXELS; i++) { // pixels.Color takes RGB values, from 0,0,0 up to 255,255,255 pixels.setPixelColor(i, pixels.Color(2, 0, 0)); // Moderately bright green color. } pixels.show(); // This sends the updated pixel color to the hardware. delay(delayval); // Delay for a period of time (in milliseconds). }