int in1 = 0;
int in2 = 1;
void setup() {
  // put your setup code here, to run once:
pinMode(in1,OUTPUT);
pinMode(in2,OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(in1,HIGH);
digitalWrite(in2,LOW);
delay(5000);
digitalWrite(in1,LOW);
digitalWrite(in2,HIGH);
delay(5000);
}