Taiwan

不用接電阻，一次可控制3顆燈號
孔徑：3.5mm
孔距：15mm
 
Arduino 程式
// 設定紅黃綠燈腳位
  int ledRed = 3;
  int ledYellow = 4;
  int ledGreen = 5;

void setup() {                
  pinMode(ledRed, OUTPUT);     
  pinMode(ledYellow, OUTPUT);     
  pinMode(ledGreen, OUTPUT);
}

void loop() {
  // 綠燈
  digitalWrite(ledRed, LOW);     
  digitalWrite(ledYellow, LOW);
  digitalWrite(ledGreen, HIGH);
  delay(1000);      //亮1秒鐘

  // 黃燈
  digitalWrite(ledRed, LOW);   
  digitalWrite(ledGreen, LOW);
  digitalWrite(ledYellow, HIGH);
  delay(1000);     //亮1秒鐘

  // 紅燈
  digitalWrite(ledYellow, LOW);
  digitalWrite(ledGreen, LOW);
  digitalWrite(ledRed, HIGH);   
  delay(1000);     //亮1秒鐘    
}