RGB三色渐变彩灯

int led1 = 9; int led2 = 10; int led3 = 11; void setup() { pinMode(led1,OUTPUT); pinMode(led2,OUTPUT); pinMode(led3,OUTPUT); } void setColor(int red,int green,int blue) { analogWrite(led1,255-red); analogWrite(led2,255-green); analogWrite(led3,255-blue); } void loop() { int i,j; for(i=0,j=255;i<256;i++) { setColor(i,j,0); delay(4); j--; } delay(100); //绿色向红色渐变 for(i=0,j=255;i<256;i++) { setColor(j,0,i); delay(4); j--; } delay(100); //红色向蓝色渐变 for(i=0,j=255;i<256;i++) { setColor(0,i,j); delay(4); j--; } delay(100); //蓝色向绿色渐变 }