1個LED燈閃爍的Arduino控制

控制任務和要求

讓一個LED燈閃爍

接線  

程序設計

int half_cycle=1000;   // define the cycle time of LED blink
int LED_pin=13;      // define the LED pin

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

// the loop function runs over and over again forever
void loop() 
{
  digitalWrite(LED_pin, HIGH);     // turn the LED on (HIGH is the voltage level)
  delay(half_cycle);              // wait for half_cycle time
  digitalWrite(LED_pin, LOW);     // turn the LED off by making the voltage LOW
  delay(half_cycle);              // wait for half_cycle time
}

注解

改變LED_pin的值可以改變LED的聯接引腳，改變half_cycle的值可以改變閃爍周期。