Stap 4: Arduino programmering
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#include <Adafruit_NeoPixel.h>#define PIN 6 // the digital pin the data line is connected to// Modifed NeoPixel sample for the holiday craft project// Parameter 1 = number of pixels in strip// Parameter 2 = pin number (most are valid)// Parameter 3 = pixel type flags, add together as needed:// NEO_KHZ800 800 KHz bitstream (most NeoPixel products w/WS2812 LEDs)// NEO_KHZ400 400 KHz (classic 'v1' (not v2) FLORA pixels, WS2811 drivers)// NEO_GRB Pixels are wired for GRB bitstream (most NeoPixel products)// NEO_RGB Pixels are wired for RGB bitstream (v1 FLORA pixels, not v2) Adafruit_NeoPixel strip = Adafruit_NeoPixel(16, PIN, NEO_GRB + NEO_KHZ800); #define low_red strip.Color(3, 0, 0)#define low_green strip.Color(0, 3, 0)#define med_red strip.Color(20, 0, 0)#define med_green strip.Color(0, 20, 0)#define hi_red strip.Color(40, 0, 0)#define hi_green strip.Color(0, 40, 0)voidsetup() { strip.begin(); strip.show(); // Initialize all pixels to 'off' } voidloop() { uint16_t i, j; int num_steps =100; fade_up(100, 30, 30, 0, 0); fade_up(100, 30, 0, 30, 0); fade_up(100, 30, 30, 0, 0); fade_up(100, 30, 0, 30, 0); colorWipe(med_red, 50); // Red colorWipe(med_green, 50); // Green colorWipe(med_red, 50); // Red colorWipe(med_green, 50); // Greenfor (j=0; j<2; j++) { for(i=0; i<strip.numPixels()+3; i++) { if (i<strip.numPixels()) strip.setPixelColor(i, hi_red); if ((i-1>=0) && (i-1< strip.numPixels())) strip.setPixelColor(i-1, med_red); if ((i-2>=0) && (i-2< strip.numPixels())) strip.setPixelColor(i-2, low_red); if ((i-3>=0) && (i-3< strip.numPixels())) strip.setPixelColor(i-3, med_green); strip.show(); delay(50); } } } // loop// fade_up - fade up to the given colorvoidfade_up(int num_steps, int wait, int R, int G, int B) { uint16_t i, j; for (i=0; i<num_steps; i++) { for(j=0; j<strip.numPixels(); j++) { strip.setPixelColor(j, strip.Color(R * i / num_steps, G * i / num_steps, B * i / num_steps)); } strip.show(); delay(wait); } } // fade_up// Fill the dots one after the other with a colorvoidcolorWipe(uint32_t c, uint8_t wait) { for(uint16_t i=0; i<strip.numPixels(); i++) { strip.setPixelColor(i, c); strip.show(); delay(wait); } }