¡ü256LED

#include <Adafruit_NeoPixel.h>
Adafruit_NeoPixel pixels(256,6,NEO_GRB + NEO_KHZ800);
int rgb[3], timing[3], paw[4], mode=0, paw_mode=0, PAW_point;
int pattern[256], color_mode=0;
int musicScale[] = {523,587,659,698,784,880,988,1047};
float para[5] = {0.9, 0.6, 0.4, 0.2, 0.1};

void setup(){
  pixels.begin();
  tone(4,880); delay(50); noTone(4); delay(50); tone(4,1760); delay(50); noTone(4);
  pinMode(8, OUTPUT); pinMode(9, OUTPUT);
  digitalWrite(8, LOW); digitalWrite(9, LOW);
  pattern_set();
  color_mode = random(0,6);
  nice_initial();
}

void loop(){
  int i=0,j;
  if(++timing[0] > 1000){
    timing[0] = 0;
    if(++timing[1] > 40){
      timing[1] = 0;
      if(++timing[2] > 4){
        timing[2] = 0;
        pattern[32 + random(192)] = 1;
        color_mode = (color_mode + random(1,4)) % 6;
      }
    }
    PAW_sensor_read();
    all_clear();
    for(i=0;i<256;i++){
      if(pattern[i] != 0){
        color_set(color_mode);
        for(j=0;j<3;j++) rgb[j] = rgb[j] * para[timing[2]];
        point_disp(i); 
      }
    }
    PAW_point_display();
    pixels.show();
    pattern[PAW_point] = 0;
    clear_check();
  }
}

void clear_check(){
  int i,j = 0;
  for(i=0;i<256;i++){ if(pattern[i] == 0) j++; }
  if(j == 256){
    for(i=0; i<9; i++){ tone(4, musicScale[i]); delay(40); noTone(4); delay(60); }
    pattern_set();
    color_mode = random(0,6);
    nice_initial();
  }
}

void pattern_set(){
  int i;
  for(i=0;i<256;i++){
    pattern[i] = 0;
    if((i & 0x10) == 0){ if(i%2 == 0) pattern[i] = 1; }
    else{ if(i%2 != 0) pattern[i] = 1; }
  }
  pattern[0] = 0; pattern[14] = 0; pattern[31] = 0;
  pattern[224] = 0; pattern[241] = 0; pattern[255] = 0;
}

void PAW_point_display(){
  int d1, d2, d3, d4;
  d1 = ( 110 + map(paw[3],409,58,0,220) - map(paw[0],512,74,0,220) ) / 2;
  d2 = map( constrain(d1,0,100), 0, 100, 0, 15);
  d3 = ( 110 + map(paw[1],363,53,0,220) - map(paw[2],418,58,0,220) ) / 2;
  d4 = map( constrain(d3,0,100), 0, 100, 0, 15) * 16;
  PAW_point = d2 + d4;
  color_set(6);
  point_disp(PAW_point);
}

void PAW_sensor_read(){
  switch(paw_mode){
    case 0:
      digitalWrite(8, HIGH);
      break;
    case 1:
      paw[0] = analogRead(A0);
      paw[1] = analogRead(A1);
      digitalWrite(8, LOW);
      break;
    case 2:
      digitalWrite(9, HIGH);
      break;
    case 3:
      paw[2] = analogRead(A0);
      paw[3] = analogRead(A1);
      digitalWrite(9, LOW);
      break;
  }
  paw_mode = (paw_mode + 1) % 4;
}

void point_disp(int i){
  int p = 255 - i;
  if(((p >> 4) & 1) == 0) p = (p & 0xf0) - (p & 0x0f) + 15;
  pixels.setPixelColor(p, pixels.Color(rgb[0],rgb[1],rgb[2]));
}

void all_clear(){
  for(int i=0;i<256;i++) pixels.setPixelColor(i, pixels.Color(0,0,0));
}

void color_set(int mode){
  switch(mode){
      case 0: rgb[0]=30; rgb[1]=0; rgb[2]=0; break;
      case 1: rgb[0]=0; rgb[1]=30; rgb[2]=0; break;
      case 2: rgb[0]=0; rgb[1]=0; rgb[2]=36; break;
      case 3: rgb[0]=20; rgb[1]=20; rgb[2]=0; break;
      case 4: rgb[0]=20; rgb[1]=0; rgb[2]=20; break;
      case 5: rgb[0]=0; rgb[1]=20; rgb[2]=20; break;
      case 6: rgb[0]=25; rgb[1]=25; rgb[2]=25; break;
   }
}

void nice_initial(){
  int i,j;
  for(i=0;i<256;i++){
    for(j=0;j<3;j++){
        rgb[j] = random(1,8);
        pixels.setPixelColor(i, pixels.Color(rgb[0],rgb[1],rgb[2]));
    }
  }
  pixels.show();
  delay(250);
  for(i=0;i<256;i++){
    for(j=0;j<3;j++){
        rgb[j] = random(1,20);
        pixels.setPixelColor(i, pixels.Color(rgb[0],rgb[1],rgb[2]));
    }
  }
  pixels.show();
  delay(250);
  for(i=0;i<256;i++){
    for(j=0;j<3;j++){
        rgb[j] = random(1,33);
        pixels.setPixelColor(i, pixels.Color(rgb[0],rgb[1],rgb[2]));
    }
  }
  pixels.show();
  delay(250);
  all_clear();
  pixels.show();
}