#define pinLED1 4
#define pinLED2 5
#define pinLED3 6
#define pinLED4 7
#define pinLED5 8
#define pinLED6 9
#define pinLED7 10

void setup() 
{
  pinMode(pinLED1, OUTPUT);
  pinMode(pinLED2, OUTPUT);
  pinMode(pinLED3, OUTPUT);
  pinMode(pinLED4, OUTPUT);
  pinMode(pinLED5, OUTPUT);
  pinMode(pinLED6, OUTPUT);    
  pinMode(pinLED7, OUTPUT);      
}


void loop() 
{
   digitalWrite(pinLED1, HIGH);
   digitalWrite(pinLED3, HIGH);
   digitalWrite(pinLED5, HIGH);
   digitalWrite(pinLED7, HIGH);         
   delay(300);
   digitalWrite(pinLED1, LOW);
   digitalWrite(pinLED3, LOW);
   digitalWrite(pinLED5, LOW);
   digitalWrite(pinLED7, LOW);
   delay(300);

   digitalWrite(pinLED2, HIGH);
   digitalWrite(pinLED4, HIGH);
   digitalWrite(pinLED6, HIGH);      
   delay(300);
   digitalWrite(pinLED2, LOW);
   digitalWrite(pinLED4, LOW);
   digitalWrite(pinLED6, LOW);
   delay(300);   
}