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#include <Adafruit_NeoPixel.h>
#include "Arduino.h"
#ifdef __AVR__
#include <avr/power.h>
#endif
#define PIN 11
//======================================
uint32_t numOfLeds =16; // Stella's lamp, 16 led
//======================================
// 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 hoop = Adafruit_NeoPixel(numOfLeds, PIN, NEO_RGB + NEO_KHZ800); //Diffused individual leds use this
//Adafruit_NeoPixel strip = Adafruit_NeoPixel(numOfLeds, 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
Serial.begin(9600);
hoop.begin();
hoop.show(); // Initialize all pixels to '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 hoop.Color(255 - WheelPos * 3, 0, WheelPos * 3);
}
if(WheelPos < 170) {
WheelPos -= 85;
return hoop.Color(0, WheelPos * 3, 255 - WheelPos * 3);
}
WheelPos -= 170;
return hoop.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}
// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint16_t wait) {
uint16_t i, j;
for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
for(i=0; i< numOfLeds; i++) {
hoop.setPixelColor(i, Wheel(((i * 256 / numOfLeds) + j) & 255));
}
hoop.show();
delay(wait);
}
}
void loop() {
rainbowCycle(100);
}
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