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= 問題 =
== Digital pin ==
 *HIGH 輸出電壓：
  * pin 2 = 1.55V
  * pin 3 = 2.03V
  * pin 4 = 2.03V
  * pin 5 = 1.54V
  * pin 6 = V
  * pin 7 = V
  * pin 8 = V
  * pin 9 = V
  * pin 10 = V
  * pin 11 = V
  * pin 12 = V
  * pin 13 = V

= 程式範例 =
 1. [wiki:wade/embedded/arduino/example/example_1 三顆 LED 輪流閃爍]
 2. [wiki:wade/embedded/arduino/example/example_2 由 Arduino 對 serial 寫入資料]
 3. [wiki:wade/embedded/arduino/example/example_3 由 16 個 digital pins 控制 8*8 矩陣式 LED Matrix]
 4. [wiki:wade/embedded/arduino/example/example_4 Arduino 由 XBee 接收資料]