#include <FastLED.h>
CRGB d[256];byte i,t,u;void setup(){LEDS.addLeds<WS2812,3,GRB>(d,256);}void loop(){t=millis()/15;u=t*2;for(i=13;i--;)d[XY(sin8(t+i*20)>>4,sin8(u+i*20)>>4)].setHue(i*19);blur2d(d,16,16,32);LEDS.show();}int XY(byte x,byte y){return(y*16+x);}