diff --git a/src/mqtt_influx_backend/MQTTClientHandler.py b/src/mqtt_influx_backend/MQTTClientHandler.py
index 1048fc2dba0baae69193aab4f787d5eaaa9e2323..478024dea3da10a4ea140d00f86bd3dc02b9205c 100644
--- a/src/mqtt_influx_backend/MQTTClientHandler.py
+++ b/src/mqtt_influx_backend/MQTTClientHandler.py
@@ -4,37 +4,70 @@ import paho.mqtt.client as mqtt
 from mqtt_influx_backend import InfluxDBWriter
 
 class MQTTClientHandler:
+
+    # Konstruktor
     def __init__(self, broker_url: str, topic: str, influx_writer: InfluxDBWriter):
+        #logger sollte hier zugeweist werden
         self.broker_url = broker_url
         self.topic = topic
         self.influx_writer = influx_writer
         self.client = mqtt.Client()
+        # Events werden hier methoden 
         self.client.on_connect = self.on_connect
         self.client.on_message = self.on_message
 
     def on_connect(self, client, userdata, flags, rc):
+        # log
         print("Connected with result code " + str(rc))
         client.subscribe(self.topic)
+    
+    #def save_mapping(self):
+    #with open(self.mapping_file, "w") as f:
+    #    json.dump(self.mac_to_room, f, indent=4)
 
+    # eventuell refactorn und die Aufgaben in Methoden aufteilen
     def on_message(self, client, userdata, msg):
-
+        """
+        Wenn das Topic eine Nachricht bekommt wird diese Methode ausgeführt
+        self: ist die MQTTClientHandler instanz, die wird gebraucht    
+        """
+        # log
         msg = json.loads(msg.payload)
-        print(msg)
         metadate = msg["metadata"]
-        print(metadate["mac"])
-        try:
-            
-            value = float(msg.get("co2"))
+        # key: mac : value : room
+        # hier prüfen, ob die Mac-Adresse einen Raum hat, 
+        # wenn nicht trage es in mac_to_room leer ein
+        # "aa:bb:cc:dd:ee:ff" : ""
+        mac = metadate["mac"] 
 
+        # ToImplement
+        """
+        if mac not in self.mac_to_room:
+            print(f"Neue MAC-Adresse gefunden: {mac}. Mapping wird ergänzt.")
+            self.mac_to_room[mac] = ""  # leerer Platzhalter
+            self.save_mapping()
+
+        room = self.mac_to_room[mac]
+        """
+        
+        try:
             self.influx_writer.write_point(
                 measurement="sensor_data",
-                tags={"time": metadate["mac"]},
-                tags={"mac": metadate["mac"]},
-                fields={"value": value},
-                timestamp=metadate["timestamp"]
+                tags={
+                    # ToDo "room":  metadate["todo"], 
+                    "mac": metadate["mac-address"]
+                },
+                
+                fields={
+                    "co2": msg["co2"],
+                    "temperature": msg["temp"],
+                    "humidity": msg["rh"]
+                },
+                timestamp=metadate["time"]
             )
-            print("Wrote to InfluxDB:", value)
+            print("Wrote to InfluxDB:", msg) # muss später rausgeschmiessen werden
         except Exception as e:
+            # log
             print("Error processing message:", e)
 
     def start(self):
diff --git a/src/mqtt_influx_backend/Main.py b/src/mqtt_influx_backend/Main.py
index 22b69554eaf652c1addb8eda0a3a0b8327ba6d9d..4b52eddcd5e44f2f4b44f0568524baaf00fd959b 100644
--- a/src/mqtt_influx_backend/Main.py
+++ b/src/mqtt_influx_backend/Main.py
@@ -1,9 +1,22 @@
 from dotenv import load_dotenv
 import os
-
+import logging
 from  src.mqtt_influx_backend.MQTTClientHandler import MQTTClientHandler
 from src.mqtt_influx_backend.InfluxDBWriter import InfluxDBWriter
 
+def get_logger(name: str = "default_logger") -> logging.Logger:
+    logger = logging.getLogger(name)
+    if not logger.handlers:  # Verhindert doppelte Handler bei mehrfacher Initialisierung
+        logger.setLevel(logging.DEBUG)
+        handler = logging.StreamHandler()
+        formatter = logging.Formatter(
+            '[%(asctime)s] [%(levelname)s] [%(name)s] %(message)s'
+        )
+        handler.setFormatter(formatter)
+        logger.addHandler(handler)
+    return logger
+
+
 load_dotenv()
 
 def main():
diff --git a/src/mqtt_influx_backend/mac_to_room b/src/mqtt_influx_backend/mac_to_room
new file mode 100644
index 0000000000000000000000000000000000000000..dfbc6ed30aad9ba5966e03e78e4e2b803ad705f6
--- /dev/null
+++ b/src/mqtt_influx_backend/mac_to_room
@@ -0,0 +1,5 @@
+{
+  "AA:BB:CC:DD:EE:FF": "Wohnzimmer",
+  "11:22:33:44:55:66": "Küche",
+  "77:88:99:AA:BB:CC": "Schlafzimmer"
+}
\ No newline at end of file