/*  Programm Lauf_1
    Prozessor: Arduino Uno
    12.12.23 DP   */

// Variablendeklaration

#define LED_1 9                               // LED_1 an Pin 9
#define LED_2 10                              // LED_2 an Pin 10
#define LED_3 11
#define LED_4 12
#define time 350                              // Wartezeit im ms


// Routine Setup

void setup() 
{
pinMode(LED_1, OUTPUT);                      // Pin 9 Ausgang
pinMode(LED_2, OUTPUT);                      // Pin 10 Ausgang
pinMode(LED_3, OUTPUT);
pinMode(LED_4, OUTPUT);
}

// Routine Loop

void loop() 
{
  // 1. Schritt
  digitalWrite(LED_1, HIGH);                // Pin 9 auf High
  digitalWrite(LED_2, LOW);                 // Pin 10 auf Low
  digitalWrite(LED_3, LOW);
  digitalWrite(LED_4, LOW);
  delay(time);  
  // 2. Schritt                             
  digitalWrite(LED_1, LOW);                 // Pin 9 auf Low
  digitalWrite(LED_2, HIGH);                // Pin 10 auf High
  digitalWrite(LED_3, LOW);
  digitalWrite(LED_4, LOW);
  delay(time);
  // 3. Schritt
  digitalWrite(LED_1, LOW);                 
  digitalWrite(LED_2, LOW);                 
  digitalWrite(LED_3, HIGH);
  digitalWrite(LED_4, LOW);
  delay(time);
  // 4. Schritt
  digitalWrite(LED_1, LOW);                
  digitalWrite(LED_2, LOW);                
  digitalWrite(LED_3, LOW);
  digitalWrite(LED_4, HIGH);
  delay(time);
  // 3. Schritt
  digitalWrite(LED_1, LOW);                 
  digitalWrite(LED_2, LOW);                 
  digitalWrite(LED_3, HIGH);
  digitalWrite(LED_4, LOW);
  delay(time);
  // 2. Schritt                             
  digitalWrite(LED_1, LOW);                
  digitalWrite(LED_2, HIGH);                
  digitalWrite(LED_3, LOW);
  digitalWrite(LED_4, LOW);
  delay(time);            
}