 
   pinMode(ledPin, OUTPUT);
   digitalWrite(ledPin, LOW);
+
+  pinMode(A3, OUTPUT);
+  pinMode(A4, OUTPUT);
 
   Serial.println(F("Reaper Remote by Allesnetz.com"));
 

  /* no action, ignoring the incomming data */
}

void setup()
{
  Serial.begin(115200);

  if (button1.toggled()) {
    if (button1.read() == Button::PRESSED) {
      Serial.println("Button 1 has been pressed");
      showLED(LED_RED);
      if (isConnected) {
        sendMuteCommand(true);
      }
    } else {
      Serial.println("Button 1 has been released");
      showLED(LED_OFF);
      if (isConnected) {
        sendMuteCommand(false);
      }
