Example Code for Arduino-LED Control

Wiring Diagram

Sample Code

///Arduino Sample Code for DFR0021
///www.DFRobot.com
///Last modified on 16th September 2010

int led = 3;

void setup()
{
  pinMode(led, OUTPUT);     //Set Pin3 as output
}
void loop()
{
          digitalWrite(led, HIGH);   //Turn off led
          delay(2000);
          digitalWrite(led, LOW);    //Turn on led
          delay(2000);
}