diff --git a/src/communication.h b/src/communication.h
index b631005..78204dd 100644
--- a/src/communication.h
+++ b/src/communication.h
@@ -1,5 +1,6 @@
 #include <Arduino.h>
 #include "master.h"
+#include <ArduinoJson.h>
 
 #include <PicoMQTT.h>
 
@@ -21,14 +22,18 @@ PicoMQTT::Server mqtt;
 
 
 void setupMqttServer() {
+
   // Set up the MQTT server with the desired port
   // Subscribe to a topic pattern and attach a callback
     mqtt.subscribe("#", [](const char * topic, const char * payload) {
         Serial.printf("Received message in topic '%s': %s\n", topic, payload);
+        updateStatusLED(3); // Flash LED on message received
     });
   
   // Start the MQTT server
    mqtt.begin();
+
+   Serial.println("MQTT server started on port 1883");
 }
 
 void loopMqttServer() {
@@ -38,7 +43,7 @@ void loopMqttServer() {
   // Optionally, you can publish a message periodically
   static unsigned long lastPublish = 0;
   if (millis() - lastPublish > 5000) { // Publish every 5 seconds
-    mqtt.publish("test/topic", "Hello from ESP32!");
+    mqtt.publish("heartbeat/live", "Alive!");
     lastPublish = millis();
   }
 }
diff --git a/src/master.cpp b/src/master.cpp
index c00f3dd..f558f44 100644
--- a/src/master.cpp
+++ b/src/master.cpp
@@ -297,7 +297,8 @@ String getTimerDataJSON() {
 
 void setup() {
   Serial.begin(115200);
-  
+
+
   if (!SPIFFS.begin(true)) {
     Serial.println("SPIFFS Mount Failed");
     return;
@@ -318,7 +319,7 @@ void setup() {
   setupOTA(&server);
   
   setupRoutes();
-
+  setupLED();
   setupMqttServer(); // MQTT Server initialisieren
   
   
diff --git a/src/statusled.h b/src/statusled.h
index 751a2e5..8394d48 100644
--- a/src/statusled.h
+++ b/src/statusled.h
@@ -3,10 +3,15 @@
 
 #define LED_PIN LED_BUILTIN 
 
+
 // Status LED
 unsigned long lastLedBlink = 0;
 bool ledState = false;
 
+void setupLED() {
+  pinMode(LED_PIN, OUTPUT);
+  digitalWrite(LED_PIN, LOW); // LED aus
+}
 
 void updateStatusLED(int blinkPattern) {
   unsigned long currentTime = millis();
diff --git a/src/wificlass.h b/src/wificlass.h
index 24c0d2c..b40c5c5 100644
--- a/src/wificlass.h
+++ b/src/wificlass.h
@@ -9,7 +9,7 @@
 #include "licenceing.h"
 
 const char* ssidAP = "AquaCross-Timer";
-const char* passwordAP = "aquacross123";
+const char* passwordAP = nullptr;
 
 const char* ssidSTA = "Obiwlankenobi";
 const char* passwordSTA = "Delfine1!";