diff --git a/html/rfid.js b/html/rfid.js
index d0d2f07..12b3d82 100644
--- a/html/rfid.js
+++ b/html/rfid.js
@@ -53,7 +53,13 @@ function initWebSocket() {
 
     // Wenn eine existierende Verbindung besteht, diese erst schließen
     if (socket) {
-        socket.close();
+        try {
+            socket.onclose = null; // Remove onclose handler before closing
+            socket.onerror = null; // Remove error handler
+            socket.close();
+        } catch (e) {
+            console.error('Error closing existing socket:', e);
+        }
         socket = null;
     }
 
@@ -61,110 +67,80 @@ function initWebSocket() {
         socket = new WebSocket('ws://' + window.location.host + '/ws');
         
         socket.onopen = function() {
+            console.log('WebSocket connection established');
             isConnected = true;
             updateConnectionStatus();
             startHeartbeat(); // Starte Heartbeat nach erfolgreicher Verbindung
         };
         
-        socket.onclose = function() {
+        socket.onclose = function(event) {
+            console.log('WebSocket connection closed:', event.code, event.reason);
             isConnected = false;
             updateConnectionStatus();
-            if (heartbeatTimer) clearInterval(heartbeatTimer);
+            if (heartbeatTimer) {
+                clearInterval(heartbeatTimer);
+                heartbeatTimer = null;
+            }
             
             // Nur neue Verbindung versuchen, wenn kein Timer läuft
             if (!reconnectTimer) {
                 reconnectTimer = setTimeout(() => {
+                    console.log('Attempting to reconnect...');
                     initWebSocket();
                 }, RECONNECT_INTERVAL);
             }
         };
         
         socket.onerror = function(error) {
+            console.error('WebSocket error occurred:', error);
             isConnected = false;
             updateConnectionStatus();
-            if (heartbeatTimer) clearInterval(heartbeatTimer);
-            
-            // Bei Fehler Verbindung schließen und neu aufbauen
-            if (socket) {
-                socket.close();
-                socket = null;
+            if (heartbeatTimer) {
+                clearInterval(heartbeatTimer);
+                heartbeatTimer = null;
             }
         };
         
         socket.onmessage = function(event) {
-            lastHeartbeatResponse = Date.now(); // Aktualisiere Zeitstempel bei jeder Server-Antwort
-            
-            const data = JSON.parse(event.data);
-            if (data.type === 'amsData') {
-                displayAmsData(data.payload);
-            } else if (data.type === 'nfcTag') {
-                updateNfcStatusIndicator(data.payload);
-            } else if (data.type === 'nfcData') {
-                updateNfcData(data.payload);
-            } else if (data.type === 'writeNfcTag') {
-                handleWriteNfcTagResponse(data.success);
-            } else if (data.type === 'heartbeat') {
-                // Optional: Spezifische Behandlung von Heartbeat-Antworten
-                // Update status dots
-                const bambuDot = document.getElementById('bambuDot');
-                const spoolmanDot = document.getElementById('spoolmanDot');
-                const ramStatus = document.getElementById('ramStatus');
+            try {
+                lastHeartbeatResponse = Date.now();
+                const data = JSON.parse(event.data);
                 
-                if (bambuDot) {
-                    bambuDot.className = 'status-dot ' + (data.bambu_connected ? 'online' : 'offline');
-                    // Add click handler only when offline
-                    if (!data.bambu_connected) {
-                        bambuDot.style.cursor = 'pointer';
-                        bambuDot.onclick = function() {
-                            if (socket && socket.readyState === WebSocket.OPEN) {
-                                socket.send(JSON.stringify({
-                                    type: 'reconnect',
-                                    payload: 'bambu'
-                                }));
-                            }
-                        };
-                    } else {
-                        bambuDot.style.cursor = 'default';
-                        bambuDot.onclick = null;
-                    }
-                }
-                if (spoolmanDot) {
-                    spoolmanDot.className = 'status-dot ' + (data.spoolman_connected ? 'online' : 'offline');
-                    // Add click handler only when offline
-                    if (!data.spoolman_connected) {
-                        spoolmanDot.style.cursor = 'pointer';
-                        spoolmanDot.onclick = function() {
-                            if (socket && socket.readyState === WebSocket.OPEN) {
-                                socket.send(JSON.stringify({
-                                    type: 'reconnect',
-                                    payload: 'spoolman'
-                                }));
-                            }
-                        };
-                    } else {
-                        spoolmanDot.style.cursor = 'default';
-                        spoolmanDot.onclick = null;
-                    }
-                }
-                if (ramStatus) {
-                    ramStatus.textContent = `${data.freeHeap}k`;
-                }
-            }
-            else if (data.type === 'setSpoolmanSettings') {
-                if (data.payload == 'success') {
-                    showNotification(`Spoolman Settings set successfully`, true);
-                } else {
-                    showNotification(`Error setting Spoolman Settings`, false);
+                // Handle different message types
+                switch(data.type) {
+                    case 'amsData':
+                        displayAmsData(data.payload);
+                        break;
+                    case 'nfcTag':
+                        updateNfcStatusIndicator(data.payload);
+                        break;
+                    case 'nfcData':
+                        updateNfcData(data.payload);
+                        break;
+                    case 'writeNfcTag':
+                        handleWriteNfcTagResponse(data.success);
+                        break;
+                    case 'heartbeat':
+                        handleHeartbeatResponse(data);
+                        break;
+                    case 'setSpoolmanSettings':
+                        handleSpoolmanSettingsResponse(data);
+                        break;
+                    default:
+                        console.warn('Unknown message type:', data.type);
                 }
+            } catch (error) {
+                console.error('Error processing WebSocket message:', error);
             }
         };
     } catch (error) {
+        console.error('Error initializing WebSocket:', error);
         isConnected = false;
         updateConnectionStatus();
         
-        // Nur neue Verbindung versuchen, wenn kein Timer läuft
         if (!reconnectTimer) {
             reconnectTimer = setTimeout(() => {
+                console.log('Attempting to reconnect after error...');
                 initWebSocket();
             }, RECONNECT_INTERVAL);
         }
@@ -389,6 +365,7 @@ function updateSpoolButtons(show) {
     });
 }
 
+// Verbesserte Funktion zum Behandeln von Spoolman Settings
 function handleSpoolmanSettings(tray_info_idx, setting_id, cali_idx, nozzle_temp_min, nozzle_temp_max) {
     // Hole das ausgewählte Filament
     const selectedText = document.getElementById("selected-filament").textContent;
@@ -419,6 +396,7 @@ function handleSpoolmanSettings(tray_info_idx, setting_id, cali_idx, nozzle_temp
     }
 }
 
+// Verbesserte Funktion zum Behandeln von Spool Out
 function handleSpoolOut() {
     // Erstelle Payload
     const payload = {
@@ -443,17 +421,21 @@ function handleSpoolOut() {
     }
 }
 
-// Neue Funktion zum Behandeln des Spool-In-Klicks
+// Verbesserte Funktion zum Behandeln des Spool-In-Klicks
 function handleSpoolIn(amsId, trayId) {
+    console.log("handleSpoolIn called with amsId:", amsId, "trayId:", trayId);
+    
     // Prüfe WebSocket Verbindung zuerst
     if (!socket || socket.readyState !== WebSocket.OPEN) {
         showNotification("No active WebSocket connection!", false);
-        console.error("WebSocket not connected");
+        console.error("WebSocket not connected, state:", socket ? socket.readyState : "no socket");
         return;
     }
 
     // Hole das ausgewählte Filament
     const selectedText = document.getElementById("selected-filament").textContent;
+    console.log("Selected filament:", selectedText);
+    
     if (selectedText === "Please choose...") {
         showNotification("Choose Filament first", false);
         return;
@@ -466,53 +448,55 @@ function handleSpoolIn(amsId, trayId) {
 
     if (!selectedSpool) {
         showNotification("Selected Spool not found", false);
+        console.error("Selected spool not found in spoolsData");
         return;
     }
 
+    console.log("Found spool data:", selectedSpool);
+
     // Temperaturwerte extrahieren
     let minTemp = "175";
     let maxTemp = "275";
 
-    if (Array.isArray(selectedSpool.filament.nozzle_temperature) && 
+    if (selectedSpool.filament && 
+        Array.isArray(selectedSpool.filament.nozzle_temperature) && 
         selectedSpool.filament.nozzle_temperature.length >= 2) {
         minTemp = selectedSpool.filament.nozzle_temperature[0];
         maxTemp = selectedSpool.filament.nozzle_temperature[1];
     }
 
+    // Extrahiere bambu_idx
+    let bambuIdx = "GFL99"; // Default zu Generic PLA
+    if (selectedSpool.filament?.extra?.bambu_idx) {
+        bambuIdx = selectedSpool.filament.extra.bambu_idx.replace(/['"]/g, '');
+    } else if (selectedSpool.extra?.bambu_idx) {
+        bambuIdx = selectedSpool.extra.bambu_idx.replace(/['"]/g, '');
+    }
+
     // Erstelle Payload
     const payload = {
         type: 'setBambuSpool',
         payload: {
             amsId: amsId,
             trayId: trayId,
-            color: selectedSpool.filament.color_hex || "FFFFFF",
+            color: selectedSpool.filament && selectedSpool.filament.color_hex ? selectedSpool.filament.color_hex : "FFFFFF",
             nozzle_temp_min: parseInt(minTemp),
             nozzle_temp_max: parseInt(maxTemp),
-            type: selectedSpool.filament.material,
-            brand: selectedSpool.filament.vendor.name,
-            tray_info_idx: selectedSpool.filament.extra.bambu_idx.replace(/['"]+/g, '').trim(),
+            type: selectedSpool.filament && selectedSpool.filament.material ? selectedSpool.filament.material : "PLA",
+            brand: selectedSpool.filament && selectedSpool.filament.vendor ? selectedSpool.filament.vendor.name : "",
+            tray_info_idx: bambuIdx,
             cali_idx: "-1"  // Default-Wert setzen
         }
     };
 
-    // Prüfe, ob der Key cali_idx vorhanden ist und setze ihn
-    if (selectedSpool.filament.extra.bambu_cali_id) {
-        payload.payload.cali_idx = selectedSpool.filament.extra.bambu_cali_id.replace(/['"]+/g, '').trim();
-    }
-
-    // Prüfe, ob der Key bambu_setting_id vorhanden ist
-    if (selectedSpool.filament.extra.bambu_setting_id) {
-        payload.payload.bambu_setting_id = selectedSpool.filament.extra.bambu_setting_id.replace(/['"]+/g, '').trim();
-    }
-
-    console.log("Spool-In Payload:", payload);
+    console.log("Sending payload:", payload);
 
     try {
         socket.send(JSON.stringify(payload));
-        showNotification(`Spool set in AMS ${amsId} Tray ${trayId}. Pls wait`, true);
+        showNotification(`Spool settings sent to printer. Please wait...`, true);
     } catch (error) {
-        console.error("Fehler beim Senden der WebSocket Nachricht:", error);
-        showNotification("Error while sending", false);
+        console.error("Error sending WebSocket message:", error);
+        showNotification("Error sending spool settings!", false);
     }
 }
 
@@ -687,3 +671,75 @@ function showNotification(message, isSuccess) {
         }, 300);
     }, 3000);
 }
+
+// Neue Handler-Funktionen für bessere Modularität
+function handleHeartbeatResponse(data) {
+    const bambuDot = document.getElementById('bambuDot');
+    const spoolmanDot = document.getElementById('spoolmanDot');
+    const ramStatus = document.getElementById('ramStatus');
+    
+    if (bambuDot) {
+        bambuDot.className = 'status-dot ' + (data.bambu_connected ? 'online' : 'offline');
+        if (!data.bambu_connected) {
+            bambuDot.style.cursor = 'pointer';
+            bambuDot.onclick = function() {
+                sendReconnectRequest('bambu');
+            };
+        } else {
+            bambuDot.style.cursor = 'default';
+            bambuDot.onclick = null;
+        }
+    }
+    
+    if (spoolmanDot) {
+        spoolmanDot.className = 'status-dot ' + (data.spoolman_connected ? 'online' : 'offline');
+        if (!data.spoolman_connected) {
+            spoolmanDot.style.cursor = 'pointer';
+            spoolmanDot.onclick = function() {
+                sendReconnectRequest('spoolman');
+            };
+        } else {
+            spoolmanDot.style.cursor = 'default';
+            spoolmanDot.onclick = null;
+        }
+    }
+    
+    if (ramStatus) {
+        ramStatus.textContent = `${data.freeHeap}k`;
+    }
+}
+
+function handleSpoolmanSettingsResponse(data) {
+    if (data.payload === 'success') {
+        showNotification(`Spoolman Settings set successfully`, true);
+    } else {
+        showNotification(`Error setting Spoolman Settings`, false);
+    }
+}
+
+function sendReconnectRequest(target) {
+    if (socket?.readyState === WebSocket.OPEN) {
+        socket.send(JSON.stringify({
+            type: 'reconnect',
+            payload: target
+        }));
+    }
+}
+
+// Verbesserte Funktion zum Senden von WebSocket-Nachrichten
+function sendWebSocketMessage(message) {
+    if (!socket || socket.readyState !== WebSocket.OPEN) {
+        console.error('WebSocket is not connected');
+        showNotification("Connection error - please try again", false);
+        return;
+    }
+
+    try {
+        const jsonString = JSON.stringify(message);
+        console.log('Sending WebSocket message:', jsonString);
+        socket.send(jsonString);
+    } catch (error) {
+        console.error('Error sending WebSocket message:', error);
+        showNotification("Error sending message", false);
+    }
+}
diff --git a/src/bambu.cpp b/src/bambu.cpp
index 63d4434..0d65a94 100644
--- a/src/bambu.cpp
+++ b/src/bambu.cpp
@@ -18,7 +18,7 @@ PubSubClient client(sslClient);
 TaskHandle_t BambuMqttTask;
 
 String report_topic = "";
-//String request_topic = "";
+String request_topic = "";
 const char* bambu_username = "bblp";
 const char* bambu_ip = nullptr;
 const char* bambu_accesscode = nullptr;
@@ -92,7 +92,7 @@ bool loadBambuCredentials() {
         bambu_serialnr = g_bambu_serialnr.c_str();
 
         report_topic = "device/" + String(bambu_serialnr) + "/report";
-        //request_topic = "device/" + String(bambu_serialnr) + "/request";
+        request_topic = "device/" + String(bambu_serialnr) + "/request";
         return true;
     }
     Serial.println("Keine gültigen Bambu-Credentials gefunden.");
@@ -197,18 +197,69 @@ FilamentResult findFilamentIdx(String brand, String type) {
 }
 
 bool sendMqttMessage(const String& payload) {
-    Serial.println("Sending MQTT message");
-    Serial.println(payload);
-    if (client.publish(report_topic.c_str(), payload.c_str())) 
-    {
-        return true;
+    // Check MQTT client state first
+    if (!client.connected()) {
+        Serial.println("Error: MQTT client not connected when trying to send message");
+        Serial.print("MQTT client state: ");
+        Serial.println(client.state());
+        return false;
     }
+
+    // Check if request_topic is empty
+    if (request_topic.isEmpty()) {
+        Serial.println("Error: request_topic is empty!");
+        return false;
+    }
+
+    // Check payload
+    if (payload.isEmpty()) {
+        Serial.println("Error: Empty payload!");
+        return false;
+    }
+
+    Serial.println("Attempting to send MQTT message:");
+    Serial.println("Topic: " + request_topic);
+    Serial.println("Payload: " + payload);
+    Serial.println("Payload length: " + String(payload.length()));
     
-    return false;
+    // Try to publish with QoS 1 and retain flag false
+    bool published = client.publish(request_topic.c_str(), payload.c_str(), false);
+    
+    if (published) {
+        Serial.println("MQTT message published successfully");
+        return true;
+    } else {
+        Serial.println("Failed to publish MQTT message");
+        Serial.print("MQTT client state after publish attempt: ");
+        Serial.println(client.state());
+        
+        // Additional error information
+        switch(client.state()) {
+            case -4:
+                Serial.println("Reason: Connection timeout");
+                break;
+            case -3:
+                Serial.println("Reason: Connection lost");
+                break;
+            case -2:
+                Serial.println("Reason: Connect failed");
+                break;
+            case -1:
+                Serial.println("Reason: Disconnected");
+                break;
+            case 0:
+                Serial.println("Reason: Connected but publish failed");
+                break;
+            default:
+                Serial.println("Reason: Unknown error");
+                break;
+        }
+        return false;
+    }
 }
 
 bool setBambuSpool(String payload) {
-    Serial.println("Spool settings in");
+    Serial.println("Spool settings received from WebSocket");
     Serial.println(payload);
 
     // Parse the JSON
@@ -220,21 +271,28 @@ bool setBambuSpool(String payload) {
         return false;
     }
 
-    int amsId = doc["amsId"];
-    int trayId = doc["trayId"];
+    // Check if we have all required fields
+    if (!doc["amsId"].is<int>() || !doc["trayId"].is<int>()) {
+        Serial.println("Error: Missing or invalid required fields in payload");
+        return false;
+    }
+
+    int amsId = doc["amsId"].as<int>();
+    int trayId = doc["trayId"].as<int>();
     String color = doc["color"].as<String>();
     color.toUpperCase();
-    int minTemp = doc["nozzle_temp_min"];
-    int maxTemp = doc["nozzle_temp_max"];
-    String type = doc["type"].as<String>();
+    int minTemp = doc["nozzle_temp_min"] | 0;  // Default to 0 if not present
+    int maxTemp = doc["nozzle_temp_max"] | 0;  // Default to 0 if not present
+    String type = doc["type"] | "";  // Default to empty string if not present
     (type == "PLA+") ? type = "PLA" : type;
-    String brand = doc["brand"].as<String>();
+    String brand = doc["brand"] | "";  // Default to empty string if not present
     String tray_info_idx = (doc["tray_info_idx"].as<String>() != "-1") ? doc["tray_info_idx"].as<String>() : "";
     if (tray_info_idx == "") {
         if (brand != "" && type != "") {
             FilamentResult result = findFilamentIdx(brand, type);
             tray_info_idx = result.key;
             type = result.type;  // Aktualisiere den type mit dem gefundenen Basistyp
+            Serial.println("Found filament idx: " + tray_info_idx + " for type: " + type);
         }
     }
     String setting_id = doc["bambu_setting_id"].as<String>();
@@ -242,6 +300,7 @@ bool setBambuSpool(String payload) {
 
     doc.clear();
 
+    // Create MQTT message
     doc["print"]["sequence_id"] = "0";
     doc["print"]["command"] = "ams_filament_setting";
     doc["print"]["ams_id"] = amsId < 200 ? amsId : 255;
@@ -250,26 +309,25 @@ bool setBambuSpool(String payload) {
     doc["print"]["nozzle_temp_min"] = minTemp;
     doc["print"]["nozzle_temp_max"] = maxTemp;
     doc["print"]["tray_type"] = type;
-    //doc["print"]["cali_idx"] = (cali_idx != "") ? cali_idx : "";
     doc["print"]["tray_info_idx"] = tray_info_idx;
     doc["print"]["setting_id"] = setting_id;
     
-    // Serialize the JSON
+    // Serialize and send MQTT message
     String output;
     serializeJson(doc, output);
+    Serial.println("Sending to Bambu printer:");
+    Serial.println(output);
 
-    if (sendMqttMessage(output)) {
-        Serial.println("Spool successfully set");
-    }
-    else
-    {
-        Serial.println("Failed to set spool");
+    if (!sendMqttMessage(output)) {
+        Serial.println("Failed to send filament settings to printer");
         return false;
     }
     
+    Serial.println("Filament settings sent successfully");
     doc.clear();
     yield();
 
+    // Send calibration if available
     if (cali_idx != "") {
         yield();
         doc["print"]["sequence_id"] = "0";
@@ -278,21 +336,18 @@ bool setBambuSpool(String payload) {
         doc["print"]["nozzle_diameter"] = "0.4";
         doc["print"]["cali_idx"] = cali_idx.toInt();
         doc["print"]["tray_id"] = trayId < 200 ? trayId : 254;
-        //doc["print"]["ams_id"] = amsId < 200 ? amsId : 255;
 
-        // Serialize the JSON
         String output;
         serializeJson(doc, output);
+        Serial.println("Sending calibration to printer:");
+        Serial.println(output);
 
-        if (sendMqttMessage(output)) {
-            Serial.println("Extrusion calibration successfully set");
-        }
-        else
-        {
-            Serial.println("Failed to set extrusion calibration");
+        if (!sendMqttMessage(output)) {
+            Serial.println("Failed to send calibration settings to printer");
             return false;
         }
 
+        Serial.println("Calibration settings sent successfully");
         doc.clear();
         yield();
     }
@@ -661,8 +716,8 @@ bool setupMqtt() {
         String clientId = String(bambu_serialnr) + "_" + String(random(0xffff), HEX);
         
         // MQTT Connection Options
-       // client.setKeepAlive(60);
-       // client.setSocketTimeout(60);  // Increase socket timeout
+        client.setKeepAlive(60);
+        client.setSocketTimeout(60);  // Increase socket timeout
         
         Serial.print("Connecting with client ID: ");
         Serial.println(clientId);