Arrays 紅綠燈

int timer = 100;           // The higher the number, the slower the timing.

int ledPins[] = {

  3, 4, 5, LED燈放的接腳

};       // an array of pin numbers to which LEDs are attached

int pinCount = 3;           // the number of pins (i.e. the length of the array)

void setup() {

  // the array elements are numbered from 0 to (pinCount - 1).

  // use a for loop to initialize each pin as an output:

  for (int thisPin = 0; thisPin < pinCount; thisPin++) {

    pinMode(ledPins[thisPin], OUTPUT);

  }

}

void loop() {

  // loop from the lowest pin to the highest:

  for (int thisPin = 0; thisPin < pinCount; thisPin++) {

    // turn the pin on:

    digitalWrite(ledPins[thisPin], HIGH);

    delay(timer);

    // turn the pin off:

    digitalWrite(ledPins[thisPin], LOW);

  } // loop from the highest pin to the lowest:

  for (int thisPin = pinCount - 1; thisPin >= 0; thisPin--) {

    // turn the pin on:

    digitalWrite(ledPins[thisPin], HIGH);

    delay(timer);

    // turn the pin off:

    digitalWrite(ledPins[thisPin], LOW);

  }

int timerr[] ={ 10000,3500,9500}停的秒數(綠黃紅);             // The higher the number, the slower the timing.

int ledPins[] = {

    3,4,5

};       // an array of pin numbers to which LEDs are attached

int pinCount = 3;           // the number of pins (i.e. the length of the array)

void setup() {

  // the array elements are numbered from 0 to (pinCount - 1).

  // use a for loop to initialize each pin as an output:

  for (int thisPin = 0; thisPin < pinCount; thisPin++) {

    pinMode(ledPins[thisPin], OUTPUT);

  }

}

void loop() {

  // loop from the lowest pin to the highest:

  for (int thisPin = 0; thisPin < pinCount; thisPin++) {

    // turn the pin on:

    digitalWrite(ledPins[thisPin], HIGH);

    delay(timerr[thisPin]);

    // turn the pin off:

    digitalWrite(ledPins[thisPin], LOW);

  }

  // loop from the highest pin to the lowest:

  //for (int thisPin = pinCount - 1; thisPin >= 0; thisPin--) {

    // turn the pin on:

    //digitalWrite(ledPins[thisPin], HIGH);

   // delay(timer);

    // turn the pin off:

   // digitalWrite(ledPins[thisPin], LOW);

  }