/* A simple program to sequentially turn on and turn off 3 LEDs */

int LED1 = 13;
int LED2 = 12;
int LED3 = 11;

void setup () {
pinMode (LED1, OUTPUT);
pinMode (LED2, OUTPUT);
pinMode (LED3, OUTPUT);
}

void loop() {
digitalWrite (LED1, HIGH);  // turn on LED1
delay(200);                 // wait for 200ms
digitalWrite (LED2, HIGH) ; // turn on LED2
delay (200);                // wait for 200ms
digitalWrite (LED3, HIGH);  // turn on LED3
delay (200);                // wait for 200ms
digitalWrite (LED1, LOW);   // turn off LED1
delay(300);                 // wait for 300ms
digitalWrite (LED2, LOW) ;  // turn off LED2
delay(300);                 // wait for 300ms
digitalWrite (LED3, LOW) ;  // turn off LED3
delay(300);                 // wait for 300ms before running program all over again
}