#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif
// Pin connected to the NeoPixels
#define PIN 6
//NeoPixels attached to the Arduino
#define NUMPIXELS 16
Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);
int delayval = 20; // delay for half a second
int color;
void setup() {
pixels.begin(); // This initializes the NeoPixel library.
}
void loop() {
colorWheel(70);
}
void colorWheel(uint8_t wait) {
int i, j;
for (j = 0; j < 256; j=j+3) {
for (i = 0; i < pixels.numPixels(); i++) {
pixels.setPixelColor(i, Wheel((i*4+j) & 255));
delay(wait);
pixels.show();
}
for (i = 1; i < pixels.numPixels(); i++) {
pixels.setPixelColor(i, 0,0,0);
delay(wait/3);
pixels.show();
}
}
j=0;
}
uint32_t Wheel(byte WheelPos) {
WheelPos = 255 - WheelPos;
if (WheelPos < 85) {
return pixels.Color(255 - WheelPos * 3, 0, WheelPos * 3);
}
if (WheelPos < 170) {
WheelPos -= 85;
return pixels.Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
WheelPos -= 170;
return pixels.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}