void setup() {
  // put your setup code here, to run once:
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(2,1);
digitalWrite(3,0);
analogWrite(5,200);
delay(2000);

digitalWrite(2,0);
digitalWrite(3,1);
analogWrite(5,100);
delay(2000);
}