例一  1顆七段顯示器、門閂
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int i;
void setup() {
  Serial.begin(115200);

  // add external voltage (Javascript) with name "pin n" to access output pins
  for (i=1;i<8;i++) {
    pinMode(i,OUTPUT);
  }
}

void loop() {
  Serial.println("looping");
  for (i = 1; i != 8; i++) {
    digitalWrite(i, HIGH);
    delay(50);
    digitalWrite(i, LOW);
  }
}


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例二  並聨2顆七段顯示器
程式碼同前


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例三  分別顯示1、2

int i;
void setup() {
  Serial.begin(115200);

  // add external voltage (Javascript) with name "pin n" to access output pins
  for (i=1;i<8;i++) {
    pinMode(i,OUTPUT);
  }
}

void loop() {
  Serial.println("looping");
//1
    digitalWrite(11,HIGH);    
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    delay(50);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);
    digitalWrite(11,LOW);
//2    
    digitalWrite(12,HIGH);
    digitalWrite(1, HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(7, HIGH);
    delay(50);
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(4, LOW);
    digitalWrite(5, LOW);
    digitalWrite(7, LOW);
    digitalWrite(12,LOW);
  }

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final：例四  同時顯示1、2


int i;
void setup() {
  Serial.begin(115200);

  // add external voltage (Javascript) with name "pin n" to access output pins
  for (i=1;i<8;i++) {
    pinMode(i,OUTPUT);
  }
  pinMode(11,OUTPUT);
  pinMode(12,OUTPUT);
}

void loop() {
  Serial.println("looping");
//1
    digitalWrite(11,HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(3, HIGH);
    delay(50);
    digitalWrite(11,LOW);
    digitalWrite(2, LOW);
    digitalWrite(3, LOW);

//2    
    digitalWrite(12,HIGH);
    digitalWrite(1, HIGH);
    digitalWrite(2, HIGH);
    digitalWrite(4, HIGH);
    digitalWrite(5, HIGH);
    digitalWrite(7, HIGH);
    delay(50);
    digitalWrite(12,LOW);
    digitalWrite(1, LOW);
    digitalWrite(2, LOW);
    digitalWrite(4, LOW);
    digitalWrite(5, LOW);
    digitalWrite(7, LOW);
    digitalWrite(12,LOW);
  }