常用的IC

int v1Pin=8,v2Pin=9,v3Pin=10,v4Pin=11;

int h1Pin=4,h2Pin=5,h3Pin=6,h4Pin=7;

int dt=20;          //調整 dt 的值讓整頁的圖形不會閃爍

int loopCnt=200;    //改變 loopCnt 的值調整頁面切換的速度

void setup() {

  pinMode(v1Pin,OUTPUT);  

  pinMode(v2Pin,OUTPUT);  

  pinMode(v3Pin,OUTPUT);  

  pinMode(v4Pin,OUTPUT);

  pinMode(h1Pin,OUTPUT);  

  pinMode(h2Pin,OUTPUT);  

  pinMode(h3Pin,OUTPUT);  

  pinMode(h4Pin,OUTPUT);

}

void loop() {

  //page 1

  for(int a=0;a<loopCnt;a++){

    digitalWrite(v1Pin, HIGH);

    digitalWrite(v2Pin, HIGH);

    digitalWrite(h1Pin, HIGH);

    delay(dt);

    lightOff();

    digitalWrite(v2Pin, HIGH);

    digitalWrite(v3Pin, HIGH);

    digitalWrite(h2Pin, HIGH);

    delay(dt);

    lightOff();

  }

  //page 2

  for(int a=0;a<loopCnt;a++){

    digitalWrite(v2Pin, HIGH);

    digitalWrite(v3Pin, HIGH);

    digitalWrite(h2Pin, HIGH);

    delay(dt);

    lightOff();

    digitalWrite(v3Pin, HIGH);

    digitalWrite(v4Pin, HIGH);

    digitalWrite(h3Pin, HIGH);

    delay(dt);

    lightOff();

  }  

}

void lightOff(){

  digitalWrite(v1Pin, LOW);

  digitalWrite(v2Pin, LOW);

  digitalWrite(v3Pin, LOW);

  digitalWrite(v4Pin, LOW);

  digitalWrite(h1Pin, LOW);

  digitalWrite(h2Pin, LOW);

  digitalWrite(h3Pin, LOW);

  digitalWrite(h4Pin, LOW);

}

int optocouplerPin=8;

void setup() {

  pinMode(optocouplerPin,OUTPUT);

}

void loop() {

  digitalWrite(optocouplerPin, HIGH); 

  delay(1000);

  digitalWrite(optocouplerPin, LOW); 

  delay(1000);

}

const int dataPin = 9;

const int latchPin = 10;

const int clockPin = 11;

//試著改變 dt 的值，找到可以騙過眼睛造成視覺暫留的門檻值

int dt = 50;

void setup() {

  pinMode(latchPin,OUTPUT);

  pinMode(clockPin,OUTPUT);

  pinMode(dataPin,OUTPUT);

}

void loop() {

  for(int a=0;a<256;a++){

    //把 latch 電位拉低開始傳送資料

    digitalWrite(latchPin, LOW);

    //傳送資料

    shiftOut(dataPin, clockPin, MSBFIRST, a);

    /*  MSBFIRST的意思是most significant bit first，也就是最先輸出的會是number

       （是個uint8_t，有8個bits，第7個bit是MSB，第0個bit是LSB）的第7個bit。如果改用

        LSBFIRST（least significant bit first），那麼最先輸出的會是第0個  */

    //把 latch 電位拉高結束傳送資料

    digitalWrite(latchPin, HIGH);

    delay(dt);

  }

}

int dt=20;

void setup() {

  pinMode(10, OUTPUT);

  pinMode(11, OUTPUT);

  pinMode(12, OUTPUT);

  pinMode(8, OUTPUT);

}

void loop() {

  // 12  11  10

  //  0   0   0

  //  0   0   1

  //  0   1   0

  //  0   1   1

  //  1   0   0

  //  1   0   1

  //  1   1   0

  //  1   1   1

  digitalWrite(10,LOW);

  digitalWrite(11,LOW);

  digitalWrite(12,LOW);

  delay(dt);

  digitalWrite(10,HIGH);

  digitalWrite(11,LOW);

  digitalWrite(12,LOW);

  delay(dt);

  digitalWrite(10,LOW);

  digitalWrite(11,HIGH);

  digitalWrite(12,LOW);

  delay(dt);

  digitalWrite(10,HIGH);

  digitalWrite(11,HIGH);

  digitalWrite(12,LOW);

  delay(dt);

  digitalWrite(10,LOW);

  digitalWrite(11,LOW);

  digitalWrite(12,HIGH);

  delay(dt);

  digitalWrite(10,HIGH);

  digitalWrite(11,LOW);

  digitalWrite(12,HIGH);

  delay(dt);

  digitalWrite(10,LOW);

  digitalWrite(11,HIGH);

  digitalWrite(12,HIGH);

  delay(dt);

  digitalWrite(10,HIGH);

  digitalWrite(11,HIGH);

  digitalWrite(12,HIGH);

  delay(dt);

}