// Bekegung der LEDs
#define led_red 11
#define led_yellow 10
#define led_green 9

// Belegung des Tasters
#define button_input 8

// Variablen für den Taster
bool button_on = false;
bool button_read = false;
bool switch0 = false;

// Variablen für die leds
bool red = false;
bool yellow = false;
bool green = false;

// Timer
unsigned long led_millis = 0;

void setup() {

  pinMode(led_red, OUTPUT);
  pinMode(led_yellow, OUTPUT);
  pinMode(led_green, OUTPUT);

  pinMode(button_input, INPUT_PULLUP);

  Serial.begin(9600);
}

void loop() {

  bool button = digitalRead(button_input);
  unsigned long led_timer = millis() - led_millis;

  if (!button) {
    if (led_timer > 1500) {
      red = !red;
      yellow = !yellow;
      green = !green;

      led_millis = millis();
    }
  } else {
      red = false;
      yellow = false;
      green = false;
  }

  digitalWrite(led_red, red);
  digitalWrite(led_yellow, yellow);
  digitalWrite(led_green, green);
}