int l1 = 15;
int l2 = 2;
int l3 = 0;
int l4 = 16;
int l5 = 17;
int l6 = 5;
int l7 = 18;
int x = 0;
int btnstart = 14;


void setup() {

  Serial.begin(115200);
  pinMode(l1, OUTPUT);
  pinMode(l2, OUTPUT);
  pinMode(l3, OUTPUT);
  pinMode(l4, OUTPUT);
  pinMode(l5, OUTPUT);
  pinMode(l6, OUTPUT);
  pinMode(l7, OUTPUT);
  pinMode(btnstart, INPUT);
  int zzahl = 0;
  //alle LED ausschalten
  off();



}

void loop() {
 if(digitalRead(btnstart)==HIGH){
  while(x<random(1,50)){
  zzahl = random(1,7);
  Serial.println(zzahl);
  if(zzahl==1){ z1(); }
  else if(zzahl==2){ z2(); }
  else if(zzahl==3){ z3(); }
  else if(zzahl==4){ z4(); }
  else if(zzahl==5){ z5(); }
  else{ z6(); }
  delay(150);
  x++
  }
  Serial.println(" ");

delay(1000);
  
 } 
 x=0;

}

void off(){
  digitalWrite(l1, LOW);
  digitalWrite(l2, LOW);
  digitalWrite(l3, LOW);
  digitalWrite(l4, LOW);
  digitalWrite(l5, LOW);
  digitalWrite(l6, LOW);
  digitalWrite(l7, LOW);
  }

  void z1(){
  digitalWrite(l1, LOW);
  digitalWrite(l2, LOW);
  digitalWrite(l3, LOW);
  digitalWrite(l4, HIGH);
  digitalWrite(l5, LOW);
  digitalWrite(l6, LOW);
  digitalWrite(l7, LOW);
  }

    void z2(){
  digitalWrite(l1, LOW);
  digitalWrite(l2, LOW);
  digitalWrite(l3, LOW);
  digitalWrite(l4, HIGH);
  digitalWrite(l5, LOW);
  digitalWrite(l6, HIGH);
  digitalWrite(l7, LOW);
  }

    void z3(){
  digitalWrite(l1, LOW);
  digitalWrite(l2, HIGH);
  digitalWrite(l3, LOW);
  digitalWrite(l4, HIGH);
  digitalWrite(l5, LOW);
  digitalWrite(l6, HIGH);
  digitalWrite(l7, LOW);
  }

    void z4(){
  digitalWrite(l1, HIGH);
  digitalWrite(l2, HIGH);
  digitalWrite(l3, LOW);
  digitalWrite(l4, HIGH);
  digitalWrite(l5, LOW);
  digitalWrite(l6, HIGH);
  digitalWrite(l7, HIGH);
  }

    void z5(){
  digitalWrite(l1, HIGH);
  digitalWrite(l2, HIGH);
  digitalWrite(l3, HIGH;
  digitalWrite(l4, LOW);
  digitalWrite(l5, HIGH);
  digitalWrite(l6, HIGH);
  digitalWrite(l7, HIGH);
  }

     void z6(){
  digitalWrite(l1, HIGH);
  digitalWrite(l2, HIGH);
  digitalWrite(l3, HIGH;
  digitalWrite(l4, LOW);
  digitalWrite(l5, HIGH);
  digitalWrite(l6, HIGH);
  digitalWrite(l7, HIGH);
  }