Lauflicht

int t = 100;

void setup(){
  Serial.begin(9600);
  pinMode(2, OUTPUT);
  pinMode(3, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(5, OUTPUT);
  pinMode(6, OUTPUT);
  pinMode(7, OUTPUT);
  pinMode(8, OUTPUT);
  pinMode(9, OUTPUT);
}

void loop(){
  schx();
}

void schx(){

  for(int i = 2; i <= 9; i++){
  digitalWrite(i, HIGH);
  delay(t);
  digitalWrite(i, LOW);
  }

  for(int i = 8; i >= 3; i--){
  //digitalWrite(9,LOW);
  digitalWrite(i, HIGH);
  delay(t);
  digitalWrite(i, LOW);
  }
}


void sch(){
  for(int i = 2; i <= 9; i++){
  digitalWrite(i, HIGH);
  delay(t);
  if(i==9){
  digitalWrite(i, HIGH);
  }
  else{
  digitalWrite(i, LOW);
  Serial.println(i);
    }
  }

  for(int i = 9; i >= 3; i--){
  digitalWrite(i, HIGH);
  delay(t);
  digitalWrite(i, LOW);
  Serial.println(i);
  }
}