Blink

Blink

 +// 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
 +  digitalWrite(13, LOW);    // turn the LED off by making the voltage LOW
 +  delay(1000);              // wait for a second
 +}