int led1=7;
int led2=6;
int led3=5;
void setup() {
  // put your setup code here, to run once:
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  pinMode(led3, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  // LED1 //
  digitalWrite(led1, HIGH);
  delay(300);
  digitalWrite(led1, LOW);
  //delay(300);
  
  // LED2//
  digitalWrite(led2, HIGH);
  delay(1500);
  digitalWrite(led2, LOW);
  //delay(1500);

  // LED3//
  digitalWrite(led3, HIGH);
  delay(300);
  digitalWrite(led3, LOW);
  //delay(300);
}