void setup() {

// initialize digital pin 1 as an output.

pinMode(10, OUTPUT);

}

// the loop function runs over and over again forever

void loop() {

digitalWrite(1, HIGH); // turn the LED on (HIGH is the voltage level)

delay(100); // wait for a second

digitalWrite(0, LOW); // turn the LED off by making the voltage LOW

delay(100); // wait for a second

}