實驗三
互動交通信號燈課後作業

  1. 選擇任意顏色 LED 6 個,做一個流水燈的效果,6 盞燈從左至右依次點亮,然後再 從右至左依次熄滅。

    2. 程式 
    
int led13 = 13 ;
int led12 = 12 ;
int led11 = 11 ;
int led10 = 10 ;
int led9 = 9 ;
int led8 = 8 ;
void setup() {
  pinMode(led13, OUTPUT);
  pinMode(led12, OUTPUT);
  pinMode(led11, OUTPUT);
  pinMode(led10, OUTPUT);
  pinMode(led9, OUTPUT);
  pinMode(led8, OUTPUT);

}

void loop() {
  digitalWrite(led13, HIGH);
  delay(400);
  digitalWrite(led12, HIGH);
  delay(400);
  digitalWrite(led11, HIGH);
  delay(400);
  digitalWrite(led10, HIGH);
  delay(400);
  digitalWrite(led9, HIGH);
  delay(400);
  digitalWrite(led8, HIGH);
  delay(1000);
  digitalWrite(led8, LOW);
  delay(400);
  digitalWrite(led9, LOW);
  delay(400);
  digitalWrite(led10, LOW);
  delay(400);
  digitalWrite(led11, LOW);
  delay(400);
  digitalWrite(led12, LOW);
  delay(400);
  digitalWrite(led13, LOW);
  delay(1000);
}

  2. 如果上面那個你已經完成了的話,可以嘗試一下,先從中間的燈開始亮起,依次向 兩邊擴開。下圖是個變換過程的示意圖。

    3. 程式 
    
int led13 = 13 ;
int led12 = 12 ;
int led11 = 11 ;
int led10 = 10 ;
int led9 = 9 ;
int led8 = 8 ;
void setup() {
  pinMode(led13, OUTPUT);
  pinMode(led12, OUTPUT);
  pinMode(led11, OUTPUT);
  pinMode(led10, OUTPUT);
  pinMode(led9, OUTPUT);
  pinMode(led8, OUTPUT);

}

void loop() {
  digitalWrite(led11, HIGH);
  digitalWrite(led10, HIGH);
  delay(400);
  digitalWrite(led12, HIGH);
  digitalWrite(led9, HIGH);
  delay(400);
  digitalWrite(led13, HIGH);
  digitalWrite(led8, HIGH);
  delay(1000);
  digitalWrite(led13, LOW);
  digitalWrite(led8, LOW);
  delay(400);
  digitalWrite(led12, LOW);
  digitalWrite(led9, LOW);
  delay(400);
  digitalWrite(led11, LOW);
  digitalWrite(led10, LOW);
  delay(1000);

}

  3. 再比如,從左至右,依次亮起 1 個,2 個,3 個......

    4. 程式 
    
int led13 = 13 ;
int led12 = 12 ;
int led11 = 11 ;
int led10 = 10 ;
int led9 = 9 ;
int led8 = 8 ;
void setup() {
  pinMode(led13, OUTPUT);
  pinMode(led12, OUTPUT);
  pinMode(led11, OUTPUT);
  pinMode(led10, OUTPUT);
  pinMode(led9, OUTPUT);
  pinMode(led8, OUTPUT);

}

void loop() {
  digitalWrite(led13, HIGH);
   delay(400);
  digitalWrite(led12, HIGH);
  delay(400);   
  digitalWrite(led11, HIGH);
  delay(400);   
  digitalWrite(led10, HIGH);
  delay(400);
  digitalWrite(led9, HIGH);
  delay(400);   
  digitalWrite(led8, HIGH);
  delay(400);

  digitalWrite(led13, LOW);
  digitalWrite(led12, LOW); 
  digitalWrite(led11, LOW);
  digitalWrite(led10, LOW);
  digitalWrite(led9, LOW);
  digitalWrite(led8, LOW);


}

  4. 再結合按鈕,用按鍵開關和 LED 互動。

    5. 程式 
    
int led13 = 13 ;

int button = 12;
void setup() {
  pinMode(led13, OUTPUT);

  pinMode(button, INPUT);

}

void loop(){
  if(digitalRead(button) == HIGH){
    digitalWrite(led13, HIGH);
    delay(10000);
  }else{
  digitalWrite(led13, LOW);
}
}

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