const int pinLED1 = 6;
const int pinLED2 = 7;
const int pinLED3 = 8;
void setup ()
{
pinMode(pinLED1, OUTPUT );
pinMode(pinLED2, OUTPUT );
pinMode(pinLED3, OUTPUT );
}
void loop()
{
digitalWrite(pinLED1, HIGH);
digitalWrite(pinLED2, HIGH);
digitalWrite(pinLED3, HIGH);
delay (500);
digitalWrite(pinLED1, LOW);
delay (500);
digitalWrite(pinLED2, LOW);
delay (500);
digitalWrite(pinLED3, LOW);
delay (500);
}