BlinkCode.ino

//Blink code:

// int is type of variable. variables are where we store information.
// here we store the name of our LED pin.
int led = 13;

// another variable as an example.
int blinks; 

// the setup routine runs once in the beginning.
void setup() { 

// initialize the digital pin as an output.
pinMode(led, OUTPUT); 

// initialize the serial port monitor
Serial.begin(9600); 

}

// the loop routine runs over and over again forever:
void loop() {

digitalWrite(led, HIGH); // turn the LED on (HIGH is the voltage level)

delay(100); // wait for a second

digitalWrite(led, LOW); // turn the LED off by making the voltage LOW

delay(100); // wait for a second

blinks = blinks + 1; // add one to the variable blinks.

// Send the value of blinks to the serial port monitor.
Serial.print("Blink # ");  

Serial.println(blinks); 

}