51 lines
1.8 KiB
C++
51 lines
1.8 KiB
C++
// NeoPixel Ring simple sketch (c) 2013 Shae Erisson
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// Released under the GPLv3 license to match the rest of the
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// Adafruit NeoPixel library
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#include <Adafruit_NeoPixel.h>
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#ifdef __AVR__
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#include <avr/power.h> // Required for 16 MHz Adafruit Trinket
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#endif
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// Which pin on the Arduino is connected to the NeoPixels?
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#define PIN 6 // On Trinket or Gemma, suggest changing this to 1
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// How many NeoPixels are attached to the Arduino?
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#define NUMPIXELS 16 // Popular NeoPixel ring size
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// When setting up the NeoPixel library, we tell it how many pixels,
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// and which pin to use to send signals. Note that for older NeoPixel
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// strips you might need to change the third parameter -- see the
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// strandtest example for more information on possible values.
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Adafruit_NeoPixel pixels(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
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#define DELAYVAL 500 // Time (in milliseconds) to pause between pixels
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void setup() {
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// These lines are specifically to support the Adafruit Trinket 5V 16 MHz.
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// Any other board, you can remove this part (but no harm leaving it):
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#if defined(__AVR_ATtiny85__) && (F_CPU == 16000000)
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clock_prescale_set(clock_div_1);
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#endif
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// END of Trinket-specific code.
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pixels.begin(); // INITIALIZE NeoPixel strip object (REQUIRED)
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}
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void loop() {
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pixels.clear(); // Set all pixel colors to 'off'
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// The first NeoPixel in a strand is #0, second is 1, all the way up
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// to the count of pixels minus one.
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for(int i=0; i<NUMPIXELS; i++) { // For each pixel...
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// pixels.Color() takes RGB values, from 0,0,0 up to 255,255,255
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// Here we're using a moderately bright green color:
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pixels.setPixelColor(i, pixels.Color(0, 150, 0));
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pixels.show(); // Send the updated pixel colors to the hardware.
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delay(DELAYVAL); // Pause before next pass through loop
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}
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}
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