Added Wifi signal strength to printer card

backend/app/services/bambu_ftp.py

@@ -241,13 +241,20 @@ class BambuFTPClient:
         # Try AVBL command (available space) - some FTP servers support this
         try:
             response = self._ftp.sendcmd("AVBL")
+            logger.debug(f"AVBL response: {response}")
             # Response format: "213 <bytes available>"
             if response.startswith("213"):
                 parts = response.split()
                 if len(parts) >= 2:
                     result["free_bytes"] = int(parts[1])
-        except Exception:
-            pass
+        except Exception as e:
+            logger.debug(f"AVBL command not supported: {e}")
+            # Try STAT command as fallback
+            try:
+                response = self._ftp.sendcmd("STAT")
+                logger.debug(f"STAT response: {response}")
+            except Exception:
+                pass
 
         # Calculate used space by listing root directories
         try:

backend/app/services/bambu_mqtt.py

@@ -347,6 +347,17 @@ class BambuMQTTClient:
             logger.info(f"[{self.serial_number}] Received system data: {system_data}")
             self._handle_system_response(system_data)
 
+        # Parse WiFi signal at top level (some printers send it here)
+        if "wifi_signal" in payload:
+            wifi_signal = payload["wifi_signal"]
+            if isinstance(wifi_signal, (int, float)):
+                self.state.wifi_signal = int(wifi_signal)
+            elif isinstance(wifi_signal, str):
+                try:
+                    self.state.wifi_signal = int(wifi_signal.replace("dBm", "").strip())
+                except ValueError:
+                    pass
+
         if "print" in payload:
             print_data = payload["print"]
 
@@ -1220,8 +1231,8 @@ class BambuMQTTClient:
         # Parse WiFi signal strength (dBm)
         if "wifi_signal" in data:
             wifi_signal = data["wifi_signal"]
+            logger.info(f"[{self.serial_number}] wifi_signal received: {wifi_signal}")
             if isinstance(wifi_signal, (int, float)):
-                # Convert string dBm to int (e.g., "-52dBm" -> -52)
                 self.state.wifi_signal = int(wifi_signal)
             elif isinstance(wifi_signal, str):
                 # Handle string format like "-52dBm"

backend/app/services/printer_manager.py

@@ -287,6 +287,8 @@ def printer_state_to_dict(state: PrinterState, printer_id: int | None = None) ->
         "ams_status_main": state.ams_status_main,
         "ams_status_sub": state.ams_status_sub,
         "tray_now": state.tray_now,
+        # WiFi signal strength
+        "wifi_signal": state.wifi_signal,
     }
     # Add cover URL if there's an active print and printer_id is provided
     if printer_id and state.state == "RUNNING" and state.gcode_file: