CODE:

const int motorPin1 = 10;  // Blue   - In 1const int motorPin2 = 11;  // Pink   - In 2const int motorPin3 = 12; // Yellow - In 3const int motorPin4 = 13; // Orange - In 4                          // Red    - pin 5 (VCC)unsigned int highSpeed =  2000;void setup() {  pinMode(motorPin1, OUTPUT);  pinMode(motorPin2, OUTPUT);  pinMode(motorPin3, OUTPUT);  pinMode(motorPin4, OUTPUT);}void loop(){ unsigned long n = millis() / 3000; // 3 Sekunden  switch(n % 8)  { case 0: stop();               break;    case 1: rechtsrum(highSpeed); break;    case 2: stop();               break;    case 3: linksrum(highSpeed);  break;    case 4: stop();               break;  }}void rechtsrum(unsigned int motorSpeed){ // 1  digitalWrite(motorPin4, HIGH);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin1, LOW);  delayMicroseconds(motorSpeed);  // 2  digitalWrite(motorPin4, HIGH);  digitalWrite(motorPin3, HIGH);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin1, LOW);  delayMicroseconds(motorSpeed);  // 3  digitalWrite(motorPin4, LOW);  digitalWrite(motorPin3, HIGH);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin1, LOW);  delayMicroseconds(motorSpeed);  // 4  digitalWrite(motorPin4, LOW);  digitalWrite(motorPin3, HIGH);  digitalWrite(motorPin2, HIGH);  digitalWrite(motorPin1, LOW);  delayMicroseconds(motorSpeed);  // 5  digitalWrite(motorPin4, LOW);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin2, HIGH);  digitalWrite(motorPin1, LOW);  delayMicroseconds(motorSpeed);  // 6  digitalWrite(motorPin4, LOW);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin2, HIGH);  digitalWrite(motorPin1, HIGH);  delayMicroseconds(motorSpeed);  // 7  digitalWrite(motorPin4, LOW);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin1, HIGH);  delayMicroseconds(motorSpeed);  // 8  digitalWrite(motorPin4, HIGH);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin1, HIGH);  delayMicroseconds(motorSpeed);}void linksrum(unsigned int motorSpeed){ // 1  digitalWrite(motorPin1, HIGH);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin4, LOW);  delayMicroseconds(motorSpeed);  // 2  digitalWrite(motorPin1, HIGH);  digitalWrite(motorPin2, HIGH);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin4, LOW);  delayMicroseconds(motorSpeed);  // 3  digitalWrite(motorPin1, LOW);  digitalWrite(motorPin2, HIGH);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin4, LOW);  delayMicroseconds(motorSpeed);  // 4  digitalWrite(motorPin1, LOW);  digitalWrite(motorPin2, HIGH);  digitalWrite(motorPin3, HIGH);  digitalWrite(motorPin4, LOW);  delayMicroseconds(motorSpeed);  // 5  digitalWrite(motorPin1, LOW);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin3, HIGH);  digitalWrite(motorPin4, LOW);  delayMicroseconds(motorSpeed);  // 6  digitalWrite(motorPin1, LOW);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin3, HIGH);  digitalWrite(motorPin4, HIGH);  delayMicroseconds(motorSpeed);  // 7  digitalWrite(motorPin1, LOW);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin4, HIGH);  delayMicroseconds(motorSpeed);  // 8  digitalWrite(motorPin1, HIGH);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin4, HIGH);  delayMicroseconds(motorSpeed);}void stop(){ digitalWrite(motorPin4, LOW);  digitalWrite(motorPin3, LOW);  digitalWrite(motorPin2, LOW);  digitalWrite(motorPin1, LOW);}