const int links = 20;
const int links1 = 19;
const int rechts = 7;
const int rechts1 = 6;


void setup() 
{
  pinMode(links , OUTPUT);

  pinMode(links1 , OUTPUT);

  pinMode(rechts , OUTPUT);

  pinMode(rechts1 , OUTPUT);

}
void forward() {
  digitalWrite(links , LOW);
  digitalWrite(links1 , HIGH);
  digitalWrite(rechts , LOW);
  digitalWrite(rechts1 , HIGH);  
}
void back() {
  digitalWrite(links , HIGH);
  digitalWrite(links1 , LOW);
  digitalWrite(rechts , HIGH);
  digitalWrite(rechts1 , LOW);  
}
void left() {
  digitalWrite(links , HIGH);
  digitalWrite(links1 , LOW);
  digitalWrite(rechts , LOW);
  digitalWrite(rechts1 , HIGH);
}
void right() {
  digitalWrite(links , LOW);
  digitalWrite(links1 , HIGH);
  digitalWrite(rechts , HIGH);
  digitalWrite(rechts1 , LOW);
}
void stop() {
  digitalWrite(links , LOW);
  digitalWrite(links1 , LOW);
  digitalWrite(rechts , LOW);
  digitalWrite(rechts1 , LOW);
}



void loop(){
  //forward();
  //delay(10000);
  //left();
  //delay(2000);
  //forward();
  //delay(5000);
  //left();
  //delay(2000);
  //forward();
  //delay(10000);
  //left();
  //delay(2000);
  //forward();
  //delay(5000);
  //stop();
  //delay(10000);//stops for 10 seconds
}