[ Arduino ] – Hello LED

開啟blink範例程式
blink

編譯程式中
verfily
compiling

將程式上傳到板子
upload

程式碼的部份

 Blink
  Turns on an LED on for one second, then off for one second, repeatedly.

  Most Arduinos have an on-board LED you can control. On the Uno and
  Leonardo, it is attached to digital pin 13. If you're unsure what
  pin the on-board LED is connected to on your Arduino model, check
  the documentation at http://www.arduino.cc

  This example code is in the public domain.

  modified 8 May 2014
  by Scott Fitzgerald
 */


// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin 13 as an output.
  pinMode(13, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(13, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);              // wait for a second 試著改變 delay()中的數字
  digitalWrite(13, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);              // wait for a second 試著改變 delay()中的數字
}

執行影片(內建LED)

LED 正極負極說明圖

長的為 正極 (LED內部 比較小塊的為正極)
短的為 負極 (LED內部 比較大塊的為負極)
由於有時會將LED的腳位做彎曲的動作 這時請看LED的內部區塊做 正負極的判斷

led

試著將 LED 的長腳位(正極) 插入版本中 13 的孔位, LED 的短腳位(負極) 插入 GND(接地線)中,如下圖。第一個外接LED就成功了。
IMG_20160301_092236

執行影片(外接LED)

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