Stap 6: Eerste test met de led
Als u wilt testen de led ik voor het eerst gebruikt een normale Arduino Uno.
De code die wordt gebruikt is licht gewijzigd vanuit de Adafruit test code.
Maar eerst krijgen de NeoPixel library vanaf hier: https://github.com/adafruit/Adafruit_NeoPixel
Installeren van de bibliotheek en plak de volgende code aan de Arduino
#include #include #define PIN 1// Parameter 1 = number of pixels in strip // Parameter 2 = Arduino 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);// IMPORTANT: To reduce NeoPixel burnout risk, add 1000 uF capacitor across // pixel power leads, add 300 - 500 Ohm resistor on first pixel's data input // and minimize distance between Arduino and first pixel. Avoid connecting // on a live circuit...if you must, connect GND first.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 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(0, 0, 255), 50); // Blue colorWipe(strip.Color(255,0,150), 50); // Send a theater pixel chase in... theaterChase(strip.Color(127, 127, 127), 50); // White theaterChase(strip.Color(127, 0, 0), 50); // Red theaterChase(strip.Color( 0, 0, 127), 50); // Blue rainbow(20); rainbowCycle(20); theaterChaseRainbow(50); }// Fill the dots one after the other with a color void colorWipe(uint32_t c, uint8_t wait) { for(uint16_t i=0; ivoid rainbow(uint8_t wait) { uint16_t i, j; for(j=0; j<256; j++) { for(i=0; i// 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); } }//Theatre-style crawling lights. void theaterChase(uint32_t c, uint8_t wait) { for (int j=0; j<10; j++) { //do 10 cycles of chasing for (int q=0; q < 3; q++) { for (int i=0; i < strip.numPixels(); i=i+3) { strip.setPixelColor(i+q, c); //turn every third pixel on } strip.show(); delay(wait); for (int i=0; i < strip.numPixels(); i=i+3) { strip.setPixelColor(i+q, 0); //turn every third pixel off } } } }//Theatre-style crawling lights with rainbow effect void theaterChaseRainbow(uint8_t wait) { for (int j=0; j < 256; j++) { // cycle all 256 colors in the wheel for (int q=0; q < 3; q++) { for (int i=0; i < strip.numPixels(); i=i+3) { strip.setPixelColor(i+q, Wheel( (i+j) % 255)); //turn every third pixel on } strip.show(); delay(wait); for (int i=0; i < strip.numPixels(); i=i+3) { strip.setPixelColor(i+q, 0); //turn every third pixel off } } } }// 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) { WheelPos = 255 - WheelPos; if(WheelPos < 85) { return strip.Color(255 - WheelPos * 3, 0, WheelPos * 3); } else if(WheelPos < 170) { WheelPos -= 85; return strip.Color(0, WheelPos * 3, 255 - WheelPos * 3); } else { WheelPos -= 170; return strip.Color(WheelPos * 3, 255 - WheelPos * 3, 0); } } De PIN-code wijzigen indien nodig. Pin 1 wordt later over trinket gebruikt.
