int Anzahl = 2; // Anzahl der Motorumdrehungen
const int switchPin1 = 2;
const int switchPin2 = 4;
const int switchPin3 = 5;
const int switchPin4 = 6;


int count = 0;
byte directionPin = 8;
byte stepPin = 9;
int numberOfSteps = 200 * Anzahl; // Stepps pro Motorumdrehung
int pulseWidthMicros = 20; 
int millisbetweenSteps = 10; // Geschwindkeit einstellen
const int ledPin = 13;
bool buttonPressed1 = false;
bool buttonPressed2 = false;
bool buttonPressed3 = false;
bool buttonPressed4 = false;

void setup() 
{
  pinMode(ledPin, OUTPUT);
  pinMode(switchPin1, INPUT_PULLUP);
  pinMode(switchPin2, INPUT_PULLUP);
  pinMode(switchPin3, INPUT_PULLUP);
  pinMode(switchPin4, INPUT_PULLUP);
  pinMode(directionPin, OUTPUT);
  pinMode(stepPin, OUTPUT);
  Serial.begin(9600);
  Serial.println("Start Stepper");
}

void loop() 
{
   if (digitalRead(switchPin3) == LOW && !buttonPressed1) 
     { // manuelles Posintionieren ( im )
       digitalWrite(directionPin, HIGH);
         digitalWrite(stepPin, HIGH);
         delayMicroseconds(pulseWidthMicros); 
         digitalWrite(stepPin, LOW);
         delay(100); //(millisbetweenSteps);
     }
     
   if (digitalRead(switchPin4) == LOW && !buttonPressed1) 
     { // manuelles Posintionieren ( gegen )
       digitalWrite(directionPin, LOW);
         digitalWrite(stepPin, LOW );
         delayMicroseconds(pulseWidthMicros); 
         digitalWrite(stepPin, HIGH);
         delay(100); //(millisbetweenSteps);
     }
     
  if (digitalRead(switchPin1) == LOW && !buttonPressed1) 
  {
    digitalWrite(ledPin, HIGH);
    buttonPressed1 = true;
    if (count == 0) 
     {
      digitalWrite(directionPin, HIGH);
      for (int i = 0; i <= numberOfSteps; i++) 
      {
        Serial.println(i);

         digitalWrite(stepPin, HIGH);
         delayMicroseconds(pulseWidthMicros); 
         digitalWrite(stepPin, LOW);
         delay(millisbetweenSteps);
      }
    } 
    else 
    {
      digitalWrite(directionPin, LOW);
      while (digitalRead(switchPin2) == HIGH) 
      {
        Serial.print(count);
        Serial.println("    zurück");
        count--;


         digitalWrite(stepPin, HIGH);
         delayMicroseconds(pulseWidthMicros); 
         digitalWrite(stepPin, LOW);
         delay(millisbetweenSteps);
      }
    }
    count = numberOfSteps;
  }
  if (digitalRead(switchPin1) == HIGH) 
  {
    buttonPressed1 = false;
  }
  if (digitalRead(switchPin2) == LOW) 
  {
    count = 0;
    digitalWrite(ledPin, LOW);
  }
}