twinkle.ino

/* Include the HCWS2812 library */
#include "HCWS2812.h"

/* Create an instance of the library */
HCWS2812 HCWS2812;

void setup() 
{
  /* Set the R,G,B background colours to zero */ 
  HCWS2812.SetBG(55, 55, 55);
  /* Clear the output buffer */
  HCWS2812.ClearBuffer();
}

/* Main program */
void loop() 
{
  int i = random(NUMBEROFLEDS);
  int j;

  HCWS2812.ClearBuffer();
  
  /* quick fade in */
  for(j = 0; j < 40; j++)
  {
    RGBBuffer[RED][i] = j * 5 + 55;
    RGBBuffer[GREEN][i] = j * 5 + 55;
    RGBBuffer[BLUE][i] = j * 5 + 55;
    HCWS2812.Refresh();
    delay(10);
  }

  /* slow fade out */
  for(j = 40; j; j--)
  {
    HCWS2812.ClearBuffer();
    RGBBuffer[RED][i] = j * 5 + 55;
    RGBBuffer[GREEN][i] = j * 5 + 55;
    RGBBuffer[BLUE][i] = j * 5 + 55;
    HCWS2812.Refresh();
    delay(80);
  }

  HCWS2812.ClearBuffer();
  HCWS2812.Refresh();

  delay(200);
}