docs: update changelog and header for version v1.5.12-beta12

refactor: improve readability of checkSpoolmanInstance function

.gitignore

@@ -32,6 +32,7 @@ test/README
 data/*
 !data/
 !data/.gitkeep
+# important
 html/bambu_credentials.json
 html/spoolman_url.json
 _local/*

CHANGELOG.md

@@ -1,5 +1,353 @@
 # Changelog
 
+## [1.5.12-beta12] - 2025-08-29
+### Changed
+- update platformio.ini for beta version v1.5.12-beta12
+
+### Fixed
+- reset NFC state on API send failure to allow retry
+- update createdFilamentId reset value to 65535 for better task handling
+- update createdVendorId reset value to 65535 for improved API handling
+
+
+## [1.5.12-beta11] - 2025-08-29
+### Changed
+- update platformio.ini for beta version v1.5.12-beta11
+
+### Fixed
+- update spoolman ID reset values to 65535 for better API response detection
+
+
+## [1.5.12-beta10] - 2025-08-29
+### Changed
+- update platformio.ini for beta version v1.5.12-beta10
+- streamline task creation in checkVendor and checkFilament functions
+
+
+## [1.5.12-beta9] - 2025-08-29
+### Added
+- update vendor and filament ID handling to use NULL and add delays for stability
+
+### Changed
+- update platformio.ini for beta version v1.5.12-beta9
+
+
+## [1.5.12-beta8] - 2025-08-29
+### Added
+- add delay to ensure proper setting of vendor and filament IDs after API state changes
+
+### Changed
+- update platformio.ini for beta version v1.5.12-beta8
+
+### Fixed
+- correct color_hex key usage and comment out unused date fields in spool creation
+
+
+## [1.5.12-beta7] - 2025-08-29
+### Changed
+- update platformio.ini for beta version v1.5.12-beta7
+
+### Fixed
+- improve API state handling and vendor name formatting
+
+
+## [1.5.12-beta6] - 2025-08-29
+### Changed
+- update platformio.ini for beta version v1.5.12-beta6
+- improve task synchronization in vendor, filament, and spool creation functions
+
+
+## [1.5.12-beta5] - 2025-08-29
+### Added
+- enhance NDEF decoding with detailed validation and debugging output
+
+### Changed
+- update platformio.ini for beta version v1.5.12-beta5
+
+
+## [1.5.12-beta4] - 2025-08-29
+### Added
+- enhance NDEF decoding to validate structure and extract JSON payload
+
+### Changed
+- update platformio.ini for beta version v1.5.12-beta4
+
+
+## [1.5.12-beta3] - 2025-08-29
+### Added
+- add logging for decoded JSON data in NFC processing
+
+### Changed
+- update platformio.ini for beta version v1.5.12-beta3
+
+
+## [1.5.12-beta2] - 2025-08-29
+### Changed
+- update platformio.ini for beta version v1.5.12-beta2
+
+### Fixed
+- enhance filament creation logic to include dynamic comments based on payload
+
+
+## [1.5.12-beta1] - 2025-08-28
+### Added
+- implement filament and spool creation in Spoolman API
+- Add JSON structure comments for filament and spool creation
+- Add vendor and filament management to API; implement recycling factory handling in NFC
+
+### Changed
+- update platformio.ini for beta version v1.5.12-beta1
+- Merge branch 'main' into recyclingfabrik
+- Merge branch 'main' into recyclingfabrik
+
+
+## [1.5.12] - 2025-08-28
+### Added
+- add numbering to update sections in upgrade.html refactor: improve readability of checkSpoolmanInstance function
+
+### Changed
+- update platformio.ini for version v1.5.12
+- clean up library dependencies in platformio.ini
+
+
+## [1.5.11-beta4] - 2025-08-28
+### Changed
+- update platformio.ini for beta version v1.5.11-beta4
+
+### Fixed
+- remove debug logging from checkSpoolmanInstance function
+
+
+## [1.5.11-beta3] - 2025-08-28
+### Added
+- add logging for spoolman status in checkSpoolmanInstance function
+
+### Changed
+- update platformio.ini for beta version v1.5.11-beta3
+
+
+## [1.5.11-beta2] - 2025-08-28
+### Added
+- add logging for healthy spoolman instance check
+
+### Changed
+- update platformio.ini for beta version v1.5.11-beta2
+
+
+## [1.5.11-beta1] - 2025-08-28
+### Changed
+- update platformio.ini for beta version v1.5.11-beta1
+
+### Fixed
+- adjust spacing in loop structure and enable tare function in scale loop
+
+
+## [1.5.11] - 2025-08-27
+### Changed
+- update platformio.ini for version v1.5.11
+
+
+## [1.5.10] - 2025-08-27
+### Added
+- improve weight processing logic and add auto-send feature for Bambu spool ID
+- improve weight processing logic and add auto-send feature for Bambu spool ID
+- Adds a link to the spool in spoolman when reading a spool tag
+- Fixes types and some issues in the new graphics
+- Adds ENABLE_HEAP_DEBUGGING define as comment to the build flags
+- Adds data directory and further .vscode files to to .gitignore
+- Introduces new heap debugging feature and fixes some memory leaks in website feature
+- Fixes some issues with the new location tags
+- Adds new feature to write and read location tags
+- Adds slight debouncing to the scale loop weight logic
+- add loadcell desc.
+- implement multi-color filament display and styles for dropdown options
+- add remaining weight logging for PUT requests and improve error reporting in sendToApi function
+- add remaining weight logging and display after successful spool update
+- add weight field to update payload in updateSpoolTagId function
+- add auto-tare functionality and update scale handling based on touch sensor connection
+- add touch sensor connection check and update logic
+- add manual tare functionality for scale
+- add debounce handling for TTP223 touch sensor
+- add TTP223 touch sensor support and wiring configuration
+- Renamed states of NFC state machine and introduced new state machine for spoolman API
+- add forced cache refresh after removing and saving Bambu credentials
+- add functionality to remove Bambu credentials and update API handling
+- add rfid_bambu.html and update bambu connection handling
+- add error handling for missing vendor IDs in filament data
+- add WiFi connection check and restart Bambu if not connected
+- added new .step, now with correct individual parts
+- added changelog
+- Add files via upload
+- added .stp files of modifications
+- added merged picture
+- added pictures of components bought from AliE
+- Add files via upload
+- added pictures for heat insert location
+- added pictures showing heat insert location
+- remove unnecessary delay in MQTT setup and add delay before restart
+- add new 3D print file for Filaman scale
+- added Discord Server
+- add support for Spoolman Octoprint Plugin in README files
+- add OctoPrint integration with configurable fields and update functionality
+- add version comparison function and check for outdated versions before updates
+- remove unused version and protocol fields from JSON output; add error message for insufficient memory
+
+### Changed
+- update platformio.ini for version v1.5.10
+- Merge branch 'main' of https://gitlab.fire-devils.org/3D-Druck/Filaman
+- Changed Amazon Link for PN532
+- Changed Amazon Link for PN532
+- update changelog and header for version v1.5.9
+- update platformio.ini for version v1.5.9
+- Enhance API to support weight updates after successful spool tag updates
+- update changelog and header for version v1.5.8
+- update platformio.ini for version v1.5.8
+- Merge pull request #45 from janecker/nfc_write_improvements
+- Introduces periodic Spoolman Healthcheck
+- Improves init - NFC reading now only starts after boot is finished
+- Further improvements on NFC writing
+- Merge pull request #44 from janecker/graphics_rework
+- Graphic rework of the NFC writing process
+- Remove unused parameter of sendNfcData()
+- Reworks startup graphics and timings
+- update changelog and header for version v1.5.7
+- update platformio.ini for version v1.5.7
+- clean up unused variables and improve .gitignore entries
+- update changelog and header for version v1.5.6
+- update webpages for version v1.5.6
+- update platformio.ini for version v1.5.6
+- Merge pull request #42 from janecker/configuration_nvs_storage
+- Merge branch 'main' into configuration_nvs_storage
+- Changes configuration storage of spoolman and bambu values
+- update changelog and header for version v1.5.5
+- update platformio.ini for version v1.5.5
+- update changelog and header for version v1.5.4
+- update platformio.ini for version v1.5.4
+- Merge branch 'main' of github.com:ManuelW77/Filaman
+- Merge pull request #39 from janecker/location_tags
+- Merge pull request #38 from janecker/scale_debouncing
+- update changelog and header for version v1.5.3
+- update platformio.ini for version v1.5.3
+- Affiliate Links
+- update changelog and header for version v1.5.2
+- update platformio.ini for version v1.5.2
+- update changelog and header for version v1.5.1
+- update version to 1.5.1 and improve OTA update handling with task management
+- update changelog and header for version v1.4.14
+- update platformio.ini for version v1.4.14
+- update changelog and header for version v1.4.13
+- update platformio.ini for version v1.4.13
+- update changelog and header for version v1.4.12
+- update platformio.ini for version v1.4.12
+- update README files to clarify PN532 DIP switch settings
+- update changelog and header for version v1.4.11
+- update platformio.ini for version v1.4.11
+- Merge branch 'main' of github.com:ManuelW77/Filaman
+- update changelog and header for version v1.4.10
+- update platformio.ini for version v1.4.10
+- Merge pull request #31 from janecker/nfc_rework
+- Introducing enum for handling the NFC state to improve code readability
+- update changelog and header for version v1.4.9
+- update platformio.ini for version v1.4.9
+- update changelog and header for version v1.4.8
+- update platformio.ini for version v1.4.8
+- Merge pull request #30 from janecker/main
+- Merge branch 'testing' into main
+- update changelog and header for version v1.4.7
+- update platformio.ini for version v1.4.7
+- Merge branch 'testing'
+- update remove button for Bambu credentials with red background
+- Merge pull request #28 from tugsi/main
+- update changelog and header for version v1.4.6
+- update platformio.ini for version v1.4.6
+- update changelog and header for version v1.4.5
+- update platformio.ini for version v1.4.5
+- Merge branch 'testing'
+- remove unused request_topic subscription and reduce MQTT task stack size
+- Merge pull request #26 from tugsi/main
+- rename report_topic to topic and update MQTT subscription logic, switched publish topic to request
+- update changelog and header for version v1.4.4
+- update platformio.ini for version v1.4.4
+- update changelog and header for version v1.4.3
+- update platformio.ini for version v1.4.3
+- update changelog and header for version v1.4.2
+- update platformio.ini for version v1.4.2
+- increase stack size for BambuMqtt task
+- update Discord Link
+- update Discord Link
+- remove commented-out subscription topic in MQTT setup
+- update changelog and header for version v1.4.1
+- update platformio.ini for version v1.4.1
+- refactor length calculation to convert total length to meters before formatting
+- Merge pull request #16 from spitzbirne32/main
+- improved housing to show display better
+- removed CAD, as they were all duplicates
+- typo in AliE link
+- Delete usermod/spitzbirne32/STL/README.md
+- Update README.md
+- moved pictures of parts into dedicated folders
+- Update README.md
+- Update README.md
+- Update README.md
+- Delete usermod/spitzbirne32/STL/ScaleTop_Heatinsert_Location_usermod_spitzbirne32_.png
+- Delete usermod/spitzbirne32/STL/Housing_Heatinsert_Location_usermod_spitzbirne32_.png
+- created folders
+- Update README.md
+- Update README.md
+- Create README.md
+- Update README.md
+- Update README.md
+- Create README.md
+- Merge pull request #15 from ManuelW77/main
+- Merge pull request #14 from janecker/scale-calibration-rework
+- Reworks the scale calibration handling
+- remove redundant scale calibration checks and enhance task management
+- enhance AMS data handling and streamline spool auto-setting logic
+- adjust stack size and improve scale calibration logic
+- update labels and input types for better clarity and functionality
+- update documentation for clarity and accuracy
+- update changelog and header for version v1.4.0
+- update NFC tag references to include NTAG213 and clarify storage capacity
+- bump version to 1.4.0
+- remove unused version and protocol fields from NFC data packet
+- sort vendors alphabetically in the dropdown list
+- Merge pull request #10 from janecker/nfc-improvements
+
+### Fixed
+- Fixes issue that scale not calibrated message was not shown
+- Improves NFC writing workaround and removes debug output
+- Fixes typos in upgrade page
+- Reworks graphics of tag reading and some api fixes
+- Replaces usage of String with const char* in heap debug function
+- Merge pull request #41 from janecker/memory_leak_fixes
+- Fixes compiler warnings in nfc
+- Memory leak fixes in api and nfc, location tag fix
+- Merge pull request #40 from janecker/location_bambu_fix
+- uncomment monitor_port configuration in platformio.ini
+- update spool weight conditionally based on NFC ID
+- update weight field in update payload to only include values greater than 10
+- increase stack size for sendToApi task to improve stability
+- adjust tare weight tolerance to ignore deviations of 2g
+- improve weight stability check before sending to API
+- update touch sensor connection logic to correctly identify connection status
+- update TTP223 pin configuration and adjust touch sensor logic
+- enhance HTTP method handling in sendToApi function
+- improve HTTP client configuration and clear update documents after API calls
+- Fixes memory leak in HTTPClient by disabling connection reuse
+- update reload logic after removing and saving Bambu credentials for better cache handling
+- handle Bambu connection state by introducing bambuDisabled flag
+- handle potential undefined value for tray_info_idx in handleSpoolIn function, by @tugsi
+- Fix rfid.js-Failure with X1-Series, if you wanna send a Spool to AMS:  - Uncaught TypeError: Cannot read properties of undefined (reading 'replace')     at handleSpoolIn (rfid.js:493:67)     at HTMLButtonElement.onclick ((Index):1:1) handleSpoolIn	@	rfid.js:493 onclick	@	(Index):1
+- increase MQTT buffer size and adjust task stack size
+- Fix BufferSize for larger JSONs from X-Series
+- adjust weight threshold for tare check to allow negative values
+- use unique client ID for MQTT connection to avoid conflicts
+- reload page after firmware update completion
+- increase WiFi connection timeout from 5 to 10 seconds
+- ensure valid URL format and remove trailing slash in setupWebserver
+- correct typo in console log for total length
+
+
 ## [1.5.9] - 2025-08-11
 ### Changed
 - update platformio.ini for version v1.5.9

README.de.md

@@ -62,7 +62,7 @@ Discord Server: [https://discord.gg/my7Gvaxj2v](https://discord.gg/my7Gvaxj2v)
 - **OLED 0.96 Zoll I2C white/yellow Display:** 128x64 SSD1306.
 [Amazon Link](https://amzn.to/445aaa9)
 - **PN532 NFC NXP RFID-Modul V3:** For NFC tag operations.
-[Amazon Link](https://amzn.to/4iO6CO4)
+[Amazon Link](https://amzn.eu/d/gy9vaBX)
 - **NFC Tags NTAG213 NTAG215:** RFID Tag
 [Amazon Link](https://amzn.to/3E071xO)
 - **TTP223 Touch Sensor (optional):** For reTARE per Button/Touch

README.md

@@ -66,7 +66,7 @@ Discord Server: [https://discord.gg/my7Gvaxj2v](https://discord.gg/my7Gvaxj2v)
 - **OLED 0.96 Zoll I2C white/yellow Display:** 128x64 SSD1306.
 [Amazon Link](https://amzn.to/445aaa9)
 - **PN532 NFC NXP RFID-Modul V3:** For NFC tag operations.
-[Amazon Link](https://amzn.to/4iO6CO4)
+[Amazon Link](https://amzn.eu/d/gy9vaBX)
 - **NFC Tags NTAG213 NTAG215:** RFID Tag
 [Amazon Link](https://amzn.to/3E071xO)
 - **TTP223 Touch Sensor (optional):** For reTARE per Button/Touch

html/upgrade.html

@@ -56,7 +56,7 @@
 
         <div class="update-options">
             <div class="update-section">
-                <h2>Firmware Update</h2>
+                <h2>1) Firmware Update</h2>
                 <p>Upload a new firmware file (upgrade_filaman_firmware_*.bin)</p>
                 <div class="update-form">
                     <form id="firmwareForm" enctype='multipart/form-data' data-type="firmware">
@@ -67,7 +67,7 @@
             </div>
 
             <div class="update-section">
-                <h2>Webpage Update</h2>
+                <h2>2) Webpage Update</h2>
                 <p>Upload a new webpage file (upgrade_filaman_website_*.bin)</p>
                 <div class="update-form">
                     <form id="webpageForm" enctype='multipart/form-data' data-type="webpage">

platformio.ini

@@ -9,7 +9,7 @@
 ; https://docs.platformio.org/page/projectconf.html
 
 [common]
-version = "1.5.9"
+version = "1.5.12-beta12"
 to_old_version = "1.5.0"
 
 ##
@@ -23,10 +23,7 @@ monitor_speed = 115200
 lib_deps =
     tzapu/WiFiManager @ ^2.0.17
     https://github.com/me-no-dev/ESPAsyncWebServer.git#master
-    #me-no-dev/AsyncTCP @ ^1.1.1
     https://github.com/esphome/AsyncTCP.git
-    #mathieucarbou/ESPAsyncWebServer @ ^3.6.0
-    #esp32async/AsyncTCP @ ^3.3.5
     bogde/HX711 @ ^0.7.5
     adafruit/Adafruit SSD1306 @ ^2.5.13
     adafruit/Adafruit GFX Library @ ^1.11.11
@@ -36,7 +33,6 @@ lib_deps =
     digitaldragon/SSLClient @ ^1.3.2
     
 ; Enable SPIFFS upload
-#board_build.filesystem = spiffs
 board_build.filesystem = littlefs
 ; Update partition settings
 board_build.partitions = partitions.csv

src/api.cpp

@@ -5,8 +5,22 @@
 #include <Preferences.h>
 #include "debug.h"
 #include "scale.h"
-
+#include "nfc.h"
+#include <time.h>
 volatile spoolmanApiStateType spoolmanApiState = API_IDLE;
+
+// Returns current date and time in ISO8601 format
+String getCurrentDateISO8601() {
+    struct tm timeinfo;
+    if(!getLocalTime(&timeinfo)) {
+        Serial.println("Failed to obtain time");
+        return "1970-01-01T00:00:00Z";
+    }
+    char timeStringBuff[25];
+    strftime(timeStringBuff, sizeof(timeStringBuff), "%Y-%m-%dT%H:%M:%SZ", &timeinfo);
+    return String(timeStringBuff);
+}
+
 //bool spoolman_connected = false;
 String spoolmanUrl = "";
 bool octoEnabled = false;
@@ -14,6 +28,11 @@ bool sendOctoUpdate = false;
 String octoUrl = "";
 String octoToken = "";
 uint16_t remainingWeight = 0;
+uint16_t createdVendorId = 0;  // Store ID of newly created vendor
+uint16_t foundVendorId = 0;    // Store ID of found vendor
+uint16_t foundFilamentId = 0;  // Store ID of found filament
+uint16_t createdFilamentId = 0;  // Store ID of newly created filament
+uint16_t createdSpoolId = 0;  // Store ID of newly created spool
 bool spoolmanConnected = false;
 bool spoolmanExtraFieldsChecked = false;
 TaskHandle_t* apiTask;
@@ -103,7 +122,7 @@ void sendToApi(void *parameter) {
 
     // Wait until API is IDLE
     while(spoolmanApiState != API_IDLE){
-        Serial.println("Waiting!");
+        vTaskDelay(100 / portTICK_PERIOD_MS);
         yield();
     }
     spoolmanApiState = API_TRANSMITTING;
@@ -129,10 +148,11 @@ void sendToApi(void *parameter) {
     int httpCode;
     if (httpType == "PATCH") httpCode = http.PATCH(updatePayload);
     else if (httpType == "POST") httpCode = http.POST(updatePayload);
+    else if (httpType == "GET") httpCode = http.GET();
     else httpCode = http.PUT(updatePayload);
 
     if (httpCode == HTTP_CODE_OK) {
-        Serial.println("Spoolman erfolgreich aktualisiert");
+        Serial.println("Spoolman Abfrage erfolgreich");
 
         // Restgewicht der Spule auslesen
         String payload = http.getString();
@@ -168,6 +188,86 @@ void sendToApi(void *parameter) {
                 oledShowProgressBar(5, 5, "Spool Tag", ("Done: " + String(remainingWeight) + " g remain").c_str());
                 remainingWeight = 0;
                 break;
+            case API_REQUEST_VENDOR_CREATE:
+                Serial.println("Vendor successfully created!");
+                createdVendorId = doc["id"].as<uint16_t>();
+                Serial.print("Created Vendor ID: ");
+                Serial.println(createdVendorId);
+                oledShowProgressBar(1, 1, "Vendor", "Created!");
+                break;
+            case API_REQUEST_VENDOR_CHECK:
+                if (doc.isNull() || doc.size() == 0) {
+                    Serial.println("Vendor not found in response");
+                    foundVendorId = 0;
+                } else {
+                    foundVendorId = doc[0]["id"].as<uint16_t>();
+                    Serial.print("Found Vendor ID: ");
+                    Serial.println(foundVendorId);
+                }
+                break;
+            case API_REQUEST_FILAMENT_CHECK:
+                if (doc.isNull() || doc.size() == 0) {
+                    Serial.println("Filament not found in response");
+                    foundFilamentId = 0;
+                } else {
+                    foundFilamentId = doc[0]["id"].as<uint16_t>();
+                    Serial.print("Found Filament ID: ");
+                    Serial.println(foundFilamentId);
+                }
+                break;
+            case API_REQUEST_FILAMENT_CREATE:
+                Serial.println("Filament successfully created!");
+                createdFilamentId = doc["id"].as<uint16_t>();
+                Serial.print("Created Filament ID: ");
+                Serial.println(createdFilamentId);
+                oledShowProgressBar(1, 1, "Filament", "Created!");
+                break;
+            case API_REQUEST_SPOOL_CREATE:
+                Serial.println("Spool successfully created!");
+                createdSpoolId = doc["id"].as<uint16_t>();
+                Serial.print("Created Spool ID: ");
+                Serial.println(createdSpoolId);
+                oledShowProgressBar(1, 1, "Spool", "Created!");
+                break;
+            }
+        }
+        doc.clear();
+    } else if (httpCode == HTTP_CODE_CREATED) {
+        Serial.println("Spoolman erfolgreich erstellt");
+        
+        // Parse response for created resources
+        String payload = http.getString();
+        JsonDocument doc;
+        DeserializationError error = deserializeJson(doc, payload);
+        if (error) {
+            Serial.print("Fehler beim Parsen der JSON-Antwort: ");
+            Serial.println(error.c_str());
+        } else {
+            switch(requestType){
+            case API_REQUEST_VENDOR_CREATE:
+                Serial.println("Vendor successfully created!");
+                createdVendorId = doc["id"].as<uint16_t>();
+                Serial.print("Created Vendor ID: ");
+                Serial.println(createdVendorId);
+                oledShowProgressBar(1, 1, "Vendor", "Created!");
+                break;
+            case API_REQUEST_FILAMENT_CREATE:
+                Serial.println("Filament successfully created!");
+                createdFilamentId = doc["id"].as<uint16_t>();
+                Serial.print("Created Filament ID: ");
+                Serial.println(createdFilamentId);
+                oledShowProgressBar(1, 1, "Filament", "Created!");
+                break;
+            case API_REQUEST_SPOOL_CREATE:
+                Serial.println("Spool successfully created!");
+                createdSpoolId = doc["id"].as<uint16_t>();
+                Serial.print("Created Spool ID: ");
+                Serial.println(createdSpoolId);
+                oledShowProgressBar(1, 1, "Spool", "Created!");
+                break;
+            default:
+                // Handle other create operations if needed
+                break;
             }
         }
         doc.clear();
@@ -235,11 +335,19 @@ void sendToApi(void *parameter) {
         case API_REQUEST_BAMBU_UPDATE:
             oledShowProgressBar(1, 1, "Failure!", "Bambu update");
             break;
+        case API_REQUEST_VENDOR_CREATE:
+            oledShowProgressBar(1, 1, "Failure!", "Vendor create");
+            break;
+        case API_REQUEST_FILAMENT_CREATE:
+            oledShowProgressBar(1, 1, "Failure!", "Filament create");
+            break;
+        case API_REQUEST_SPOOL_CREATE:
+            oledShowProgressBar(1, 1, "Failure!", "Spool create");
+            break;
         }
         Serial.println("Fehler beim Senden an Spoolman! HTTP Code: " + String(httpCode));
-
-        // TBD: really required?
         vTaskDelay(2000 / portTICK_PERIOD_MS);
+        nfcReaderState = NFC_IDLE; // Reset NFC state to allow retry
     }
 
     http.end();
@@ -504,6 +612,367 @@ bool updateSpoolBambuData(String payload) {
     return true;
 }
 
+// #### Brand Filament
+uint16_t createVendor(String vendor) {
+    // Create new vendor in Spoolman database using task system
+    // Note: Due to async nature, the ID will be stored in createdVendorId global variable
+    // Note: This function assumes that the caller has already ensured API is IDLE
+    createdVendorId = 65535; // Reset previous value
+    
+    String spoolsUrl = spoolmanUrl + apiUrl + "/vendor";
+    Serial.print("Create vendor with URL: ");
+    Serial.println(spoolsUrl);
+
+    // Create JSON payload for vendor creation
+    JsonDocument vendorDoc;
+    vendorDoc["name"] = vendor;
+    vendorDoc["comment"] = "automatically generated";
+    vendorDoc["empty_spool_weight"] = 180;
+    vendorDoc["external_id"] = vendor;
+
+    String vendorPayload;
+    serializeJson(vendorDoc, vendorPayload);
+    Serial.print("Vendor Payload: ");
+    Serial.println(vendorPayload);
+
+    SendToApiParams* params = new SendToApiParams();
+    if (params == nullptr) {
+        Serial.println("Fehler: Kann Speicher für Task-Parameter nicht allokieren.");
+        vendorDoc.clear();
+        return 0;
+    }
+    params->requestType = API_REQUEST_VENDOR_CREATE;
+    params->httpType = "POST";
+    params->spoolsUrl = spoolsUrl;
+    params->updatePayload = vendorPayload;
+
+    // Create task without additional API state check since caller ensures synchronization
+    BaseType_t result = xTaskCreate(
+        sendToApi,                // Task-Funktion
+        "SendToApiTask",          // Task-Name
+        6144,                     // Stackgröße in Bytes
+        (void*)params,            // Parameter
+        0,                        // Priorität
+        NULL                      // Task-Handle (nicht benötigt)
+    );
+
+    if (result != pdPASS) {
+        Serial.println("Failed to create vendor task!");
+        delete params;
+        vendorDoc.clear();
+        return 0;
+    }
+
+    vendorDoc.clear();
+    
+    // Wait for task completion and return the created vendor ID
+    // Note: createdVendorId will be set by sendToApi when response is received
+    while(createdVendorId == 65535) {
+        vTaskDelay(50 / portTICK_PERIOD_MS);
+    }
+    
+    return createdVendorId;
+}
+
+uint16_t checkVendor(String vendor) {
+    // Check if vendor exists using task system
+    foundVendorId = 65535; // Reset to invalid value to detect when API response is received
+    
+    String vendorName = vendor;
+    vendorName.trim();
+    vendorName.replace(" ", "+");
+    String spoolsUrl = spoolmanUrl + apiUrl + "/vendor?name=" + vendorName;
+    Serial.print("Check vendor with URL: ");
+    Serial.println(spoolsUrl);
+
+    SendToApiParams* params = new SendToApiParams();
+    if (params == nullptr) {
+        Serial.println("Fehler: Kann Speicher für Task-Parameter nicht allokieren.");
+        return 0;
+    }
+    params->requestType = API_REQUEST_VENDOR_CHECK;
+    params->httpType = "GET";
+    params->spoolsUrl = spoolsUrl;
+    params->updatePayload = ""; // Empty for GET request
+
+    // Check if API is idle before creating task
+    while (spoolmanApiState != API_IDLE)
+    {
+        vTaskDelay(100 / portTICK_PERIOD_MS);
+    }
+    
+    // Erstelle die Task
+    BaseType_t result = xTaskCreate(
+        sendToApi,                // Task-Funktion
+        "SendToApiTask",          // Task-Name
+        6144,                     // Stackgröße in Bytes
+        (void*)params,            // Parameter
+        0,                        // Priorität
+        NULL                      // Task-Handle (nicht benötigt)
+    );
+    
+    // Wait until foundVendorId is updated by the API response (not 65535 anymore)
+    while (foundVendorId == 65535)
+    {
+        vTaskDelay(50 / portTICK_PERIOD_MS);
+    }
+
+    // Check if vendor was found
+    if (foundVendorId == 0) {
+        Serial.println("Vendor not found, creating new vendor...");
+        uint16_t vendorId = createVendor(vendor);
+        if (vendorId == 0) {
+            Serial.println("Failed to create vendor, returning 0.");
+            return 0; // Failed to create vendor
+        } else {
+            Serial.println("Vendor created with ID: " + String(vendorId));
+            return vendorId;
+        }
+    } else {
+        Serial.println("Vendor found: " + vendor);
+        Serial.print("Vendor ID: ");
+        Serial.println(foundVendorId);
+        return foundVendorId;
+    }
+}
+
+uint16_t createFilament(uint16_t vendorId, const JsonDocument& payload) {
+    // Create new filament in Spoolman database using task system
+    // Note: Due to async nature, the ID will be stored in createdFilamentId global variable
+    // Note: This function assumes that the caller has already ensured API is IDLE
+    createdFilamentId = 65535; // Reset previous value
+    
+    String spoolsUrl = spoolmanUrl + apiUrl + "/filament";
+    Serial.print("Create filament with URL: ");
+    Serial.println(spoolsUrl);
+
+    // Create JSON payload for filament creation
+    JsonDocument filamentDoc;
+    filamentDoc["name"] = payload["color_name"].as<String>();
+    filamentDoc["vendor_id"] = String(vendorId);
+    filamentDoc["material"] = payload["type"].as<String>();
+    filamentDoc["density"] = (payload["density"].is<String>() && payload["density"].as<String>().length() > 0) ? payload["density"].as<String>() : "1.24";
+    filamentDoc["diameter"] = (payload["diameter"].is<String>() && payload["diameter"].as<String>().length() > 0) ? payload["diameter"].as<String>() : "1.75";
+    filamentDoc["weight"] = String(weight);
+    filamentDoc["spool_weight"] = payload["spool_weight"].as<String>();
+    filamentDoc["article_number"] = payload["artnr"].as<String>();
+    filamentDoc["settings_extruder_temp"] = payload["extruder_temp"].is<String>() ? payload["extruder_temp"].as<String>() : "";
+    filamentDoc["settings_bed_temp"] = payload["bed_temp"].is<String>() ? payload["bed_temp"].as<String>() : "";
+    
+    if (payload["artnr"].is<String>())
+    {
+        filamentDoc["external_id"] = payload["artnr"].as<String>();
+        filamentDoc["comment"] = payload["url"].is<String>() ? payload["url"].as<String>() + payload["artnr"].as<String>() : "automatically generated";
+    }
+    else
+    {
+        filamentDoc["comment"] = payload["url"].is<String>() ? payload["url"].as<String>() : "automatically generated";
+    }
+
+    if (payload["multi_color_hexes"].is<String>()) {
+        filamentDoc["multi_color_hexes"] = payload["multi_color_hexes"].as<String>();
+        filamentDoc["multi_color_direction"] = payload["multi_color_direction"].is<String>() ? payload["multi_color_direction"].as<String>() : "";
+    }
+    else
+    {
+        filamentDoc["color_hex"] = (payload["color_hex"].is<String>() && payload["color_hex"].as<String>().length() >= 6) ? payload["color_hex"].as<String>() : "FFFFFF";
+    }
+
+    String filamentPayload;
+    serializeJson(filamentDoc, filamentPayload);
+    Serial.print("Filament Payload: ");
+    Serial.println(filamentPayload);
+
+    SendToApiParams* params = new SendToApiParams();
+    if (params == nullptr) {
+        Serial.println("Fehler: Kann Speicher für Task-Parameter nicht allokieren.");
+        filamentDoc.clear();
+        return 0;
+    }
+    params->requestType = API_REQUEST_FILAMENT_CREATE;
+    params->httpType = "POST";
+    params->spoolsUrl = spoolsUrl;
+    params->updatePayload = filamentPayload;
+
+    // Create task without additional API state check since caller ensures synchronization
+    BaseType_t result = xTaskCreate(
+        sendToApi,                // Task-Funktion
+        "SendToApiTask",          // Task-Name
+        6144,                     // Stackgröße in Bytes
+        (void*)params,            // Parameter
+        0,                        // Priorität
+        NULL                      // Task-Handle (nicht benötigt)
+    );
+
+    if (result != pdPASS) {
+        Serial.println("Failed to create filament task!");
+        delete params;
+        filamentDoc.clear();
+        return 0;
+    }
+
+    filamentDoc.clear();
+    
+    // Wait for task completion and return the created filament ID
+    // Note: createdFilamentId will be set by sendToApi when response is received
+    while(createdFilamentId == 65535) {
+        vTaskDelay(50 / portTICK_PERIOD_MS);
+    }
+    
+    return createdFilamentId;
+}
+
+uint16_t checkFilament(uint16_t vendorId, const JsonDocument& payload) {
+    // Check if filament exists using task system
+    foundFilamentId = 65535; // Reset to invalid value to detect when API response is received
+
+    String spoolsUrl = spoolmanUrl + apiUrl + "/filament?vendor.id=" + String(vendorId) + "&external_id=" + String(payload["artnr"].as<String>());
+    Serial.print("Check filament with URL: ");
+    Serial.println(spoolsUrl);
+
+    SendToApiParams* params = new SendToApiParams();
+    if (params == nullptr) {
+        Serial.println("Fehler: Kann Speicher für Task-Parameter nicht allokieren.");
+        return 0;
+    }
+    params->requestType = API_REQUEST_FILAMENT_CHECK;
+    params->httpType = "GET";
+    params->spoolsUrl = spoolsUrl;
+    params->updatePayload = ""; // Empty for GET request
+
+     // Erstelle die Task
+    BaseType_t result = xTaskCreate(
+        sendToApi,                // Task-Funktion
+        "SendToApiTask",          // Task-Name
+        6144,                     // Stackgröße in Bytes
+        (void*)params,            // Parameter
+        0,                        // Priorität
+        NULL                      // Task-Handle (nicht benötigt)
+    );
+    
+    // Wait until foundFilamentId is updated by the API response (not 65535 anymore)
+    while (foundFilamentId == 65535) {
+        vTaskDelay(50 / portTICK_PERIOD_MS);
+    }
+
+    // Check if filament was found
+    if (foundFilamentId == 0) {
+        Serial.println("Filament not found, creating new filament...");
+        uint16_t filamentId = createFilament(vendorId, payload);
+        if (filamentId == 0) {
+            Serial.println("Failed to create filament, returning 0.");
+            return 0; // Failed to create filament
+        } else {
+            Serial.println("Filament created with ID: " + String(filamentId));
+            return filamentId;
+        }
+    } else {
+        Serial.println("Filament found for vendor ID: " + String(vendorId));
+        Serial.print("Filament ID: ");
+        Serial.println(foundFilamentId);
+        return foundFilamentId;
+    }
+}
+
+uint16_t createSpool(uint16_t vendorId, uint16_t filamentId, JsonDocument& payload, String uidString) {
+    // Create new spool in Spoolman database using task system
+    // Note: Due to async nature, the ID will be stored in createdSpoolId global variable
+    // Note: This function assumes that the caller has already ensured API is IDLE
+    createdSpoolId = 65535; // Reset to invalid value to detect when API response is received
+    
+    String spoolsUrl = spoolmanUrl + apiUrl + "/spool";
+    Serial.print("Create spool with URL: ");
+    Serial.println(spoolsUrl);
+    //String currentDate = getCurrentDateISO8601();
+
+    // Create JSON payload for spool creation
+    JsonDocument spoolDoc;
+    //spoolDoc["first_used"] = String(currentDate);
+    //spoolDoc["last_used"] = String(currentDate);
+    spoolDoc["filament_id"] = String(filamentId);
+    spoolDoc["initial_weight"] = weight > 10 ? String(weight-payload["spool_weight"].as<int>()) : "1000";
+    spoolDoc["spool_weight"] = (payload["spool_weight"].is<String>() && payload["spool_weight"].as<String>().length() > 0) ? payload["spool_weight"].as<String>() : "180";
+    spoolDoc["remaining_weight"] = (payload["weight"].is<String>() && payload["weight"].as<String>().length() > 0) ? payload["weight"].as<String>() : "1000";
+    spoolDoc["lot_nr"] = (payload["lotnr"].is<String>() && payload["lotnr"].as<String>().length() > 0) ? payload["lotnr"].as<String>() : "";
+    spoolDoc["comment"] = "automatically generated";
+    spoolDoc["extra"]["nfc_id"] = "\"" + uidString + "\"";
+
+    String spoolPayload;
+    serializeJson(spoolDoc, spoolPayload);
+    Serial.print("Spool Payload: ");
+    Serial.println(spoolPayload);
+    spoolDoc.clear();
+
+    SendToApiParams* params = new SendToApiParams();
+    if (params == nullptr) {
+        Serial.println("Fehler: Kann Speicher für Task-Parameter nicht allokieren.");
+        spoolDoc.clear();
+        return 0;
+    }
+    params->requestType = API_REQUEST_SPOOL_CREATE;
+    params->httpType = "POST";
+    params->spoolsUrl = spoolsUrl;
+    params->updatePayload = spoolPayload;
+
+    // Create task without additional API state check since caller ensures synchronization
+    BaseType_t result = xTaskCreate(
+        sendToApi,                // Task-Funktion
+        "SendToApiTask",          // Task-Name
+        6144,                     // Stackgröße in Bytes
+        (void*)params,            // Parameter
+        0,                        // Priorität
+        NULL                      // Task-Handle (nicht benötigt)
+    );
+
+    if (result != pdPASS) {
+        Serial.println("Failed to create spool task!");
+        delete params;
+        return 0;
+    }
+    
+    // Wait for task completion and return the created spool ID
+    // Note: createdSpoolId will be set by sendToApi when response is received
+    while(createdSpoolId == 65535) {
+        vTaskDelay(50 / portTICK_PERIOD_MS);
+    }
+
+    // Write data to tag with startWriteJsonToTag
+    // void startWriteJsonToTag(const bool isSpoolTag, const char* payload);
+    payload["sm_id"].set(String(createdSpoolId));
+    
+    String payloadString;
+    serializeJson(payload, payloadString);
+    
+    nfcReaderState = NFC_IDLE;
+    vTaskDelay(50 / portTICK_PERIOD_MS);
+    startWriteJsonToTag(true, payloadString.c_str());
+
+    return createdSpoolId;
+}
+
+bool createBrandFilament(JsonDocument& payload, String uidString) {
+    uint16_t vendorId = checkVendor(payload["brand"].as<String>());
+    if (vendorId == 0) {
+        Serial.println("ERROR: Failed to create/find vendor");
+        return false;
+    }
+    
+    uint16_t filamentId = checkFilament(vendorId, payload);
+    if (filamentId == 0) {
+        Serial.println("ERROR: Failed to create/find filament");
+        return false;
+    }
+    
+    uint16_t spoolId = createSpool(vendorId, filamentId, payload, uidString);
+    if (spoolId == 0) {
+        Serial.println("ERROR: Failed to create spool");
+        return false;
+    }
+    
+    Serial.println("SUCCESS: Brand filament created with Spool ID: " + String(spoolId));
+    return true;
+}
+
 // #### Spoolman init
 bool checkSpoolmanExtraFields() {
     // Only check extra fields if they have not been checked before
@@ -713,9 +1182,10 @@ bool checkSpoolmanInstance() {
             Serial.println("Error contacting spoolman instance! HTTP Code: " + String(httpCode));
         }
         http.end();
-        returnValue = false;
         spoolmanApiState = API_IDLE;
-    }else{
+    }
+    else
+    {
         // If the check is skipped, return the previous status
         Serial.println("Skipping spoolman healthcheck, API is active.");
         returnValue = spoolmanConnected;

src/api.h

@@ -17,7 +17,12 @@ typedef enum {
     API_REQUEST_BAMBU_UPDATE,
     API_REQUEST_SPOOL_TAG_ID_UPDATE,
     API_REQUEST_SPOOL_WEIGHT_UPDATE,
-    API_REQUEST_SPOOL_LOCATION_UPDATE
+    API_REQUEST_SPOOL_LOCATION_UPDATE,
+    API_REQUEST_VENDOR_CREATE,
+    API_REQUEST_VENDOR_CHECK,
+    API_REQUEST_FILAMENT_CHECK,
+    API_REQUEST_FILAMENT_CREATE,
+    API_REQUEST_SPOOL_CREATE
 } SpoolmanApiRequestType;
 
 extern volatile spoolmanApiStateType spoolmanApiState;
@@ -40,5 +45,6 @@ uint8_t updateSpoolLocation(String spoolId, String location);
 bool initSpoolman(); // Neue Funktion zum Initialisieren von Spoolman
 bool updateSpoolBambuData(String payload); // Neue Funktion zum Aktualisieren der Bambu-Daten
 bool updateSpoolOcto(int spoolId); // Neue Funktion zum Aktualisieren der Octo-Daten
+bool createBrandFilament(JsonDocument& payload, String uidString);
 
 #endif

src/bambu.cpp

@@ -33,6 +33,7 @@ AMSData ams_data[MAX_AMS];  // Definition des Arrays;
 bool removeBambuCredentials() {
     if (BambuMqttTask) {
         vTaskDelete(BambuMqttTask);
+        BambuMqttTask = NULL;
     }
     
     Preferences preferences;
@@ -63,6 +64,7 @@ bool removeBambuCredentials() {
 bool saveBambuCredentials(const String& ip, const String& serialnr, const String& accesscode, bool autoSend, const String& autoSendTime) {
     if (BambuMqttTask) {
         vTaskDelete(BambuMqttTask);
+        BambuMqttTask = NULL;
     }
 
     bambuCredentials.ip = ip.c_str();
@@ -593,6 +595,7 @@ void reconnect() {
                 Serial.println("Disable Bambu MQTT Task after 5 retries");
                 //vTaskSuspend(BambuMqttTask);
                 vTaskDelete(BambuMqttTask);
+                BambuMqttTask = NULL;
                 break;
             }
 
@@ -681,6 +684,7 @@ void bambu_restart() {
 
     if (BambuMqttTask) {
         vTaskDelete(BambuMqttTask);
+        BambuMqttTask = NULL;
         delay(10);
     }
     setupMqtt();

src/main.cpp

@@ -171,7 +171,9 @@ void loop() {
       oledShowMessage("Scale not calibrated");
       vTaskDelay(1000 / portTICK_PERIOD_MS);
     }
-  }else{
+  } 
+  else 
+  {
     // Ausgabe der Waage auf Display
     if(pauseMainTask == 0)
     {
@@ -225,7 +227,8 @@ void loop() {
     lastWeight = weight;
 
     // Wenn ein Tag mit SM id erkannte wurde und der Waage Counter anspricht an SM Senden
-    if (activeSpoolId != "" && weigthCouterToApi > 3 && weightSend == 0 && nfcReaderState == NFC_READ_SUCCESS && tagProcessed == false && spoolmanApiState == API_IDLE) {
+    if (activeSpoolId != "" && weigthCouterToApi > 3 && weightSend == 0 && nfcReaderState == NFC_READ_SUCCESS && tagProcessed == false && spoolmanApiState == API_IDLE) 
+    {
       // set the current tag as processed to prevent it beeing processed again
       tagProcessed = true;
 
@@ -233,6 +236,11 @@ void loop() {
       {
         weightSend = 1;
         
+        // Set Bambu spool ID for auto-send if enabled
+        if (bambuCredentials.autosend_enable) 
+        {
+          autoSetToBambuSpoolId = activeSpoolId.toInt();
+        }
       }
       else
       {
@@ -241,13 +249,9 @@ void loop() {
       }
     }
 
-    if(sendOctoUpdate && spoolmanApiState == API_IDLE){
-      autoSetToBambuSpoolId = activeSpoolId.toInt();
-
-      if(octoEnabled) 
-      {
-        updateSpoolOcto(autoSetToBambuSpoolId);
-      }
+    if(octoEnabled && sendOctoUpdate && spoolmanApiState == API_IDLE)
+    {
+      updateSpoolOcto(autoSetToBambuSpoolId);
       sendOctoUpdate = false;
     }
   }

src/nfc.cpp

@@ -39,7 +39,6 @@ volatile nfcReaderStateType nfcReaderState = NFC_IDLE;
 // 6 = reading
 // ***** PN532
 
-
 // ##### Funktionen für RFID #####
 void payloadToJson(uint8_t *data) {
     const char* startJson = strchr((char*)data, '{');
@@ -60,7 +59,7 @@ void payloadToJson(uint8_t *data) {
         int min_temp = doc["min_temp"];
         int max_temp = doc["max_temp"];
         const char* brand = doc["brand"];
-  
+
         Serial.println();
         Serial.println("-----------------");
         Serial.println("JSON-Parsed Data:");
@@ -100,9 +99,7 @@ bool formatNdefTag() {
     }
   
     return success;
-  }
-
-uint16_t readTagSize()
+}uint16_t readTagSize()
 {
   uint8_t buffer[4];
   memset(buffer, 0, 4);
@@ -110,115 +107,596 @@ uint16_t readTagSize()
   return buffer[2]*8;
 }
 
+String detectNtagType()
+{
+  // Read capability container from page 3 to determine exact NTAG type
+  uint8_t ccBuffer[4];
+  memset(ccBuffer, 0, 4);
+  
+  if (!nfc.ntag2xx_ReadPage(3, ccBuffer)) {
+    Serial.println("Failed to read capability container");
+    return "UNKNOWN";
+  }
+
+  // Also read configuration pages to get more info
+  uint8_t configBuffer[4];
+  memset(configBuffer, 0, 4);
+  
+  Serial.print("Capability Container: ");
+  for (int i = 0; i < 4; i++) {
+    if (ccBuffer[i] < 0x10) Serial.print("0");
+    Serial.print(ccBuffer[i], HEX);
+    Serial.print(" ");
+  }
+  Serial.println();
+
+  // NTAG type detection based on capability container
+  // CC[2] contains the data area size in bytes / 8
+  uint16_t dataAreaSize = ccBuffer[2] * 8;
+  
+  Serial.print("Data area size from CC: ");
+  Serial.println(dataAreaSize);
+
+  // Try to read different configuration pages to determine exact type
+  String tagType = "UNKNOWN";
+  
+  // Try to read page 41 (NTAG213 ends at page 39, so this should fail)
+  uint8_t testBuffer[4];
+  bool canReadPage41 = nfc.ntag2xx_ReadPage(41, testBuffer);
+  
+  // Try to read page 130 (NTAG215 ends at page 129, so this should fail for NTAG213/215)
+  bool canReadPage130 = nfc.ntag2xx_ReadPage(130, testBuffer);
+
+  if (dataAreaSize <= 180 && !canReadPage41) {
+    tagType = "NTAG213";
+    Serial.println("Detected: NTAG213 (cannot read beyond page 39)");
+  } else if (dataAreaSize <= 540 && canReadPage41 && !canReadPage130) {
+    tagType = "NTAG215";
+    Serial.println("Detected: NTAG215 (can read page 41, cannot read page 130)");
+  } else if (dataAreaSize <= 928 && canReadPage130) {
+    tagType = "NTAG216";
+    Serial.println("Detected: NTAG216 (can read page 130)");
+  } else {
+    // Fallback: use data area size from capability container
+    if (dataAreaSize <= 180) {
+      tagType = "NTAG213";
+      Serial.println("Fallback detection: NTAG213 based on data area size");
+    } else if (dataAreaSize <= 540) {
+      tagType = "NTAG215";
+      Serial.println("Fallback detection: NTAG215 based on data area size");
+    } else {
+      tagType = "NTAG216";
+      Serial.println("Fallback detection: NTAG216 based on data area size");
+    }
+  }
+  
+  return tagType;
+}
+
+uint16_t getAvailableUserDataSize()
+{
+  String tagType = detectNtagType();
+  uint16_t userDataSize = 0;
+  
+  if (tagType == "NTAG213") {
+    // NTAG213: User data from page 4-39 (36 pages * 4 bytes = 144 bytes)
+    userDataSize = 144;
+    Serial.println("NTAG213 confirmed - 144 bytes user data available");
+  } else if (tagType == "NTAG215") {
+    // NTAG215: User data from page 4-129 (126 pages * 4 bytes = 504 bytes)
+    userDataSize = 504;
+    Serial.println("NTAG215 confirmed - 504 bytes user data available");
+  } else if (tagType == "NTAG216") {
+    // NTAG216: User data from page 4-225 (222 pages * 4 bytes = 888 bytes)
+    userDataSize = 888;
+    Serial.println("NTAG216 confirmed - 888 bytes user data available");
+  } else {
+    // Unknown tag type, use conservative estimate
+    uint16_t tagSize = readTagSize();
+    userDataSize = tagSize - 60; // Reserve 60 bytes for headers/config
+    Serial.print("Unknown NTAG type, using conservative estimate: ");
+    Serial.println(userDataSize);
+  }
+  
+  return userDataSize;
+}
+
+uint16_t getMaxUserDataPages()
+{
+  String tagType = detectNtagType();
+  uint16_t maxPages = 0;
+  
+  if (tagType == "NTAG213") {
+    maxPages = 39; // Pages 4-39 are user data
+  } else if (tagType == "NTAG215") {
+    maxPages = 129; // Pages 4-129 are user data
+  } else if (tagType == "NTAG216") {
+    maxPages = 225; // Pages 4-225 are user data
+  } else {
+    // Conservative fallback
+    maxPages = 39;
+    Serial.println("Unknown tag type, using NTAG213 page limit as fallback");
+  }
+  
+  Serial.print("Maximum writable page: ");
+  Serial.println(maxPages);
+  return maxPages;
+}
+
+bool clearUserDataArea() {
+    // IMPORTANT: Only clear user data pages, NOT configuration pages
+    // NTAG layout: Pages 0-3 (header), 4-N (user data), N+1-N+3 (config) - NEVER touch config!
+    String tagType = detectNtagType();
+    
+    // Calculate safe user data page ranges (NEVER touch config pages!)
+    uint16_t firstUserPage = 4;
+    uint16_t lastUserPage = 0;
+    
+    if (tagType == "NTAG213") {
+        lastUserPage = 39;  // Pages 40-42 are config - DO NOT TOUCH!
+        Serial.println("NTAG213: Sichere Löschung Seiten 4-39");
+    } else if (tagType == "NTAG215") {
+        lastUserPage = 129; // Pages 130-132 are config - DO NOT TOUCH!
+        Serial.println("NTAG215: Sichere Löschung Seiten 4-129");
+    } else if (tagType == "NTAG216") {
+        lastUserPage = 225; // Pages 226-228 are config - DO NOT TOUCH!
+        Serial.println("NTAG216: Sichere Löschung Seiten 4-225");
+    } else {
+        // Conservative fallback - only clear a small safe area
+        lastUserPage = 39;
+        Serial.println("UNKNOWN TAG: Konservative Löschung Seiten 4-39");
+    }
+    
+    Serial.println("WARNUNG: Vollständiges Löschen kann Tag beschädigen!");
+    Serial.println("Verwende stattdessen selective NDEF-Überschreibung...");
+    
+    // Instead of clearing everything, just write a minimal NDEF structure
+    // This is much safer and preserves tag integrity
+    return initializeNdefStructure();
+}
+
+bool initializeNdefStructure() {
+    // Write minimal NDEF structure without destroying the tag
+    // This creates a clean slate while preserving tag functionality
+    
+    Serial.println("Initialisiere sichere NDEF-Struktur...");
+    
+    // Minimal NDEF structure: TLV with empty message
+    uint8_t minimalNdef[8] = {
+        0x03,           // NDEF Message TLV Tag
+        0x03,           // Length (3 bytes for minimal empty record)
+        0xD0,           // NDEF Record Header (TNF=0x0:Empty + SR + ME + MB)
+        0x00,           // Type Length (0 = empty record)
+        0x00,           // Payload Length (0 = empty record)
+        0xFE,           // Terminator TLV
+        0x00, 0x00      // Padding
+    };
+    
+    // Write the minimal structure starting at page 4
+    uint8_t pageBuffer[4];
+    
+    for (int i = 0; i < 8; i += 4) {
+        memcpy(pageBuffer, &minimalNdef[i], 4);
+        
+        if (!nfc.ntag2xx_WritePage(4 + (i / 4), pageBuffer)) {
+            Serial.print("Fehler beim Initialisieren von Seite ");
+            Serial.println(4 + (i / 4));
+            return false;
+        }
+        
+        Serial.print("Seite ");
+        Serial.print(4 + (i / 4));
+        Serial.print(" initialisiert: ");
+        for (int j = 0; j < 4; j++) {
+            if (pageBuffer[j] < 0x10) Serial.print("0");
+            Serial.print(pageBuffer[j], HEX);
+            Serial.print(" ");
+        }
+        Serial.println();
+    }
+    
+    Serial.println("✓ Sichere NDEF-Struktur initialisiert");
+    Serial.println("✓ Tag bleibt funktionsfähig und überschreibbar");
+    return true;
+}
+
 uint8_t ntag2xx_WriteNDEF(const char *payload) {
+  // Determine exact tag type and capabilities first
+  String tagType = detectNtagType();
   uint16_t tagSize = readTagSize();
-  Serial.print("Tag Size: ");Serial.println(tagSize);
+  uint16_t availableUserData = getAvailableUserDataSize();
+  uint16_t maxWritablePage = getMaxUserDataPages();
+  
+  Serial.println("=== NFC TAG ANALYSIS ===");
+  Serial.print("Tag Type: ");Serial.println(tagType);
+  Serial.print("Total Tag Size: ");Serial.println(tagSize);
+  Serial.print("Available User Data: ");Serial.println(availableUserData);
+  Serial.print("Max Writable Page: ");Serial.println(maxWritablePage);
+  Serial.println("========================");
 
   uint8_t pageBuffer[4] = {0, 0, 0, 0};
   Serial.println("Beginne mit dem Schreiben der NDEF-Nachricht...");
   
   // Figure out how long the string is
-  uint8_t len = strlen(payload);
+  uint16_t payloadLen = strlen(payload);
   Serial.print("Länge der Payload: ");
-  Serial.println(len);
+  Serial.println(payloadLen);
   
   Serial.print("Payload: ");Serial.println(payload);
 
-  // Setup the record header
-  // See NFCForum-TS-Type-2-Tag_1.1.pdf for details
-  uint8_t pageHeader[21] = {
-    /* NDEF Message TLV - JSON Record */
-    0x03, /* Tag Field (0x03 = NDEF Message) */
-    (uint8_t)(len+3+16), /* Payload Length (including NDEF header) */
-    0xD2, /* NDEF Record Header (TNF=0x2:MIME Media + SR + ME + MB) */
-    0x10, /* Type Length for the record type indicator */
-    (uint8_t)(len), /* Payload len */
-    'a', 'p', 'p', 'l', 'i', 'c', 'a', 't', 'i', 'o', 'n', '/', 'j', 's', 'o', 'n'
-  };
+  // MIME type for JSON
+  const char mimeType[] = "application/json";
+  uint8_t mimeTypeLen = strlen(mimeType);
+  
+  // Calculate NDEF record size
+  uint8_t ndefRecordHeaderSize = 3; // Header byte + Type Length + Payload Length (short record)
+  uint16_t ndefRecordSize = ndefRecordHeaderSize + mimeTypeLen + payloadLen;
+  
+  // Calculate TLV size - need to check if we need extended length format
+  uint8_t tlvHeaderSize;
+  uint16_t totalTlvSize;
+  
+  if (ndefRecordSize <= 254) {
+    // Standard TLV format: Tag (1) + Length (1) + Value (ndefRecordSize)
+    tlvHeaderSize = 2;
+    totalTlvSize = tlvHeaderSize + ndefRecordSize + 1; // +1 for terminator TLV
+  } else {
+    // Extended TLV format: Tag (1) + 0xFF + Length (2) + Value (ndefRecordSize)  
+    tlvHeaderSize = 4;
+    totalTlvSize = tlvHeaderSize + ndefRecordSize + 1; // +1 for terminator TLV
+  }
 
-  // Make sure the URI payload will fit in dataLen (include 0xFE trailer)
-  if ((len < 1) || (len + 1 > (tagSize - sizeof(pageHeader)))) 
-  {
+  Serial.print("NDEF Record Size: ");
+  Serial.println(ndefRecordSize);
+  Serial.print("Total TLV Size: ");
+  Serial.println(totalTlvSize);
+
+  // Check if the message fits in the available user data space
+  if (totalTlvSize > availableUserData) {
     Serial.println();
     Serial.println("!!!!!!!!!!!!!!!!!!!!!!!!");
-    Serial.println("Fehler: Die Nutzlast passt nicht in die Datenlänge.");
+    Serial.println("FEHLER: Payload zu groß für diesen Tag-Typ!");
+    Serial.print("Tag-Typ: ");Serial.println(tagType);
+    Serial.print("Benötigt: ");Serial.print(totalTlvSize);Serial.println(" Bytes");
+    Serial.print("Verfügbar: ");Serial.print(availableUserData);Serial.println(" Bytes");
+    Serial.print("Überschuss: ");Serial.print(totalTlvSize - availableUserData);Serial.println(" Bytes");
+    
+    if (tagType == "NTAG213") {
+      Serial.println("EMPFEHLUNG: Verwenden Sie einen NTAG215 (504 Bytes) oder NTAG216 (888 Bytes) Tag!");
+      Serial.println("Oder kürzen Sie die Payload um mindestens " + String(totalTlvSize - availableUserData) + " Bytes.");
+    }
     Serial.println("!!!!!!!!!!!!!!!!!!!!!!!!");
     Serial.println();
+    
+    oledShowMessage("Tag zu klein für Payload");
+    vTaskDelay(3000 / portTICK_PERIOD_MS);
     return 0;
   }
 
-  // Kombiniere Header und Payload
-  int totalSize = sizeof(pageHeader) + len;
-  uint8_t* combinedData = (uint8_t*) malloc(totalSize);
-  if (combinedData == NULL) 
-  {
-    Serial.println("Fehler: Nicht genug Speicher vorhanden.");
-    oledShowMessage("Tag too small");
+  Serial.println("✓ Payload passt in den Tag - Schreibvorgang wird fortgesetzt");
+
+  // IMPORTANT: Use safe NDEF initialization instead of aggressive clearing
+  Serial.println("Schritt 1: Sichere NDEF-Initialisierung...");
+  if (!initializeNdefStructure()) {
+    Serial.println("FEHLER: Konnte NDEF-Struktur nicht initialisieren!");
+    oledShowMessage("NDEF init failed");
+    vTaskDelay(2000 / portTICK_PERIOD_MS);
+    return 0;
+  }
+  Serial.println("✓ NDEF-Struktur sicher initialisiert");
+
+  // Allocate memory for the complete TLV structure
+  uint8_t* tlvData = (uint8_t*) malloc(totalTlvSize);
+  if (tlvData == NULL) {
+    Serial.println("Fehler: Nicht genug Speicher für TLV-Daten vorhanden.");
+    oledShowMessage("Memory error");
     vTaskDelay(2000 / portTICK_PERIOD_MS);
     return 0;
   }
 
-  // Kombiniere Header und Payload
-  memcpy(combinedData, pageHeader, sizeof(pageHeader));
-  memcpy(&combinedData[sizeof(pageHeader)], payload, len);
+  // Build TLV structure
+  uint16_t offset = 0;
+  
+  // TLV Header
+  tlvData[offset++] = 0x03; // NDEF Message TLV Tag
+  
+  if (ndefRecordSize <= 254) {
+    // Standard length format
+    tlvData[offset++] = (uint8_t)ndefRecordSize;
+  } else {
+    // Extended length format
+    tlvData[offset++] = 0xFF;
+    tlvData[offset++] = (uint8_t)(ndefRecordSize >> 8);  // High byte
+    tlvData[offset++] = (uint8_t)(ndefRecordSize & 0xFF); // Low byte
+  }
 
-  // Schreibe die Seiten
-  uint8_t a = 0;
-  uint8_t i = 0;
-  while (totalSize > 0) {
+  // NDEF Record Header
+  tlvData[offset++] = 0xD2; // NDEF Record Header (TNF=0x2:MIME Media + SR + ME + MB)
+  tlvData[offset++] = mimeTypeLen; // Type Length
+  tlvData[offset++] = (uint8_t)payloadLen; // Payload Length (short record format)
+
+  // MIME Type
+  memcpy(&tlvData[offset], mimeType, mimeTypeLen);
+  offset += mimeTypeLen;
+
+  // JSON Payload
+  memcpy(&tlvData[offset], payload, payloadLen);
+  offset += payloadLen;
+
+  // Terminator TLV
+  tlvData[offset] = 0xFE;
+
+  Serial.print("Gesamt-TLV-Länge: ");
+  Serial.println(offset + 1);
+
+  // Debug: Print first 64 bytes of TLV data
+  Serial.println("TLV Daten (erste 64 Bytes):");
+  for (int i = 0; i < min((int)(offset + 1), 64); i++) {
+    if (tlvData[i] < 0x10) Serial.print("0");
+    Serial.print(tlvData[i], HEX);
+    Serial.print(" ");
+    if ((i + 1) % 16 == 0) Serial.println();
+  }
+  Serial.println();
+
+  // Write data to tag pages (starting from page 4)
+  uint16_t bytesWritten = 0;
+  uint8_t pageNumber = 4;
+  uint16_t totalBytes = offset + 1;
+
+  Serial.println("Schritt 2: Schreibe neue NDEF-Daten...");
+  Serial.print("Schreibe ");
+  Serial.print(totalBytes);
+  Serial.print(" Bytes in ");
+  Serial.print((totalBytes + 3) / 4); // Round up division
+  Serial.println(" Seiten...");
+
+  while (bytesWritten < totalBytes && pageNumber <= maxWritablePage) {
+    // Clear page buffer
     memset(pageBuffer, 0, 4);
-    int bytesToWrite = (totalSize < 4) ? totalSize : 4;
-    memcpy(pageBuffer, combinedData + a, bytesToWrite);
+    
+    // Calculate how many bytes to write to this page
+    uint16_t bytesToWrite = min(4, (int)(totalBytes - bytesWritten));
+    
+    // Copy data to page buffer
+    memcpy(pageBuffer, &tlvData[bytesWritten], bytesToWrite);
 
-    //uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };  // Buffer to store the returned UID
-    //uint8_t uidLength;
-    //nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength, 100);
-
-    if (!(nfc.ntag2xx_WritePage(4+i, pageBuffer))) 
-    {
-      Serial.println("Fehler beim Schreiben der Seite.");
-      free(combinedData);
+    // Write page to tag
+    if (!nfc.ntag2xx_WritePage(pageNumber, pageBuffer)) {
+      Serial.print("FEHLER beim Schreiben der Seite ");
+      Serial.println(pageNumber);
+      Serial.print("Möglicherweise Page-Limit erreicht für ");
+      Serial.println(tagType);
+      free(tlvData);
       return 0;
     }
 
-    yield();
-    //esp_task_wdt_reset();
+    Serial.print("Seite ");
+    Serial.print(pageNumber);
+    Serial.print(" ✓: ");
+    for (int i = 0; i < 4; i++) {
+      if (pageBuffer[i] < 0x10) Serial.print("0");
+      Serial.print(pageBuffer[i], HEX);
+      Serial.print(" ");
+    }
+    Serial.println();
 
-    i++;
-    a += 4;
-    totalSize -= bytesToWrite;
+    bytesWritten += bytesToWrite;
+    pageNumber++;
+    
+    yield();
+    vTaskDelay(5 / portTICK_PERIOD_MS); // Small delay between page writes
   }
 
-  // Ensure the NDEF message is properly terminated
-  memset(pageBuffer, 0, 4);
-  pageBuffer[0] = 0xFE; // NDEF record footer
-  if (!(nfc.ntag2xx_WritePage(4+i, pageBuffer))) 
-  {
-    Serial.println("Fehler beim Schreiben des End-Bits.");
-    free(combinedData);
+  free(tlvData);
+  
+  if (bytesWritten < totalBytes) {
+    Serial.println("WARNUNG: Nicht alle Daten konnten geschrieben werden!");
+    Serial.print("Geschrieben: ");
+    Serial.print(bytesWritten);
+    Serial.print(" von ");
+    Serial.print(totalBytes);
+    Serial.println(" Bytes");
+    Serial.print("Gestoppt bei Seite: ");
+    Serial.println(pageNumber - 1);
     return 0;
   }
-
-  Serial.println("NDEF-Nachricht erfolgreich geschrieben.");
-  free(combinedData);
+  
+  Serial.println();
+  Serial.println("✓ NDEF-Nachricht erfolgreich geschrieben!");
+  Serial.print("✓ Tag-Typ: ");Serial.println(tagType);
+  Serial.print("✓ Insgesamt ");Serial.print(bytesWritten);Serial.println(" Bytes geschrieben");
+  Serial.print("✓ Verwendete Seiten: 4-");Serial.println(pageNumber - 1);
+  Serial.print("✓ Speicher-Auslastung: ");
+  Serial.print((bytesWritten * 100) / availableUserData);
+  Serial.println("%");
+  Serial.println("✓ Bestehende Daten wurden überschrieben");
+  Serial.println();
+  
   return 1;
 }
 
-bool decodeNdefAndReturnJson(const byte* encodedMessage) {
+bool decodeNdefAndReturnJson(const byte* encodedMessage, String uidString) {
   oledShowProgressBar(1, octoEnabled?5:4, "Reading", "Decoding data");
 
-  byte typeLength = encodedMessage[3];
-  byte payloadLength = encodedMessage[4];
+  // Debug: Print first 32 bytes of the raw data
+  Serial.println("Raw NDEF data (first 32 bytes):");
+  for (int i = 0; i < 32; i++) {
+    if (encodedMessage[i] < 0x10) Serial.print("0");
+    Serial.print(encodedMessage[i], HEX);
+    Serial.print(" ");
+    if ((i + 1) % 16 == 0) Serial.println();
+  }
+  Serial.println();
+
+  // Look for the NDEF TLV structure starting from the beginning
+  int tlvOffset = 0;
+  bool foundNdefTlv = false;
+  
+  // Search for NDEF TLV (0x03) in the first few bytes
+  for (int i = 0; i < 16; i++) {
+    if (encodedMessage[i] == 0x03) {
+      tlvOffset = i;
+      foundNdefTlv = true;
+      Serial.print("Found NDEF TLV at offset: ");
+      Serial.println(tlvOffset);
+      break;
+    }
+  }
+
+  if (!foundNdefTlv) {
+    Serial.println("No NDEF TLV found in tag data");
+    return false;
+  }
+
+  // Get the NDEF message length from TLV
+  uint16_t ndefMessageLength = 0;
+  int ndefRecordOffset = 0;
+  
+  if (encodedMessage[tlvOffset + 1] == 0xFF) {
+    // Extended length format: next 2 bytes contain the actual length
+    ndefMessageLength = (encodedMessage[tlvOffset + 2] << 8) | encodedMessage[tlvOffset + 3];
+    ndefRecordOffset = tlvOffset + 4; // Skip TLV tag + 0xFF + 2 length bytes
+    Serial.print("NDEF Message Length (extended): ");
+  } else {
+    // Standard length format: single byte contains the length
+    ndefMessageLength = encodedMessage[tlvOffset + 1];
+    ndefRecordOffset = tlvOffset + 2; // Skip TLV tag + 1 length byte
+    Serial.print("NDEF Message Length (standard): ");
+  }
+  Serial.println(ndefMessageLength);
+
+  // Get pointer to NDEF record
+  const byte* ndefRecord = &encodedMessage[ndefRecordOffset];
+  
+  // Parse NDEF record header
+  byte recordHeader = ndefRecord[0];
+  byte typeLength = ndefRecord[1];
+  
+  Serial.print("NDEF Record Header: 0x");
+  Serial.println(recordHeader, HEX);
+  Serial.print("Type Length: ");
+  Serial.println(typeLength);
+
+  // Determine payload length (can be 1 or 4 bytes depending on SR flag)
+  uint32_t payloadLength = 0;
+  byte payloadLengthBytes = 1;
+  byte payloadLengthOffset = 2;
+  
+  // Check if Short Record (SR) flag is set (bit 4)
+  if (recordHeader & 0x10) { // SR flag
+    payloadLength = ndefRecord[2];
+    payloadLengthBytes = 1;
+    payloadLengthOffset = 2;
+  } else {
+    // Long record format (4 bytes for payload length)
+    payloadLength = (ndefRecord[2] << 24) | (ndefRecord[3] << 16) | 
+                   (ndefRecord[4] << 8) | ndefRecord[5];
+    payloadLengthBytes = 4;
+    payloadLengthOffset = 2;
+  }
+
+  Serial.print("Payload Length: ");
+  Serial.println(payloadLength);
+  Serial.print("Payload Length Bytes: ");
+  Serial.println(payloadLengthBytes);
+
+  // Check for ID field (if IL flag is set)
+  byte idLength = 0;
+  if (recordHeader & 0x08) { // IL flag
+    idLength = ndefRecord[payloadLengthOffset + payloadLengthBytes];
+    Serial.print("ID Length: ");
+    Serial.println(idLength);
+  }
+
+  // Calculate offset to payload
+  byte payloadOffset = 1 + 1 + payloadLengthBytes + typeLength + idLength;
+  
+  Serial.print("Calculated payload offset: ");
+  Serial.println(payloadOffset);
+
+  // Verify we have enough data
+  if (payloadOffset + payloadLength > ndefMessageLength) {
+    Serial.println("Invalid NDEF structure - payload extends beyond message");
+    Serial.print("Payload offset + length: ");
+    Serial.print(payloadOffset + payloadLength);
+    Serial.print(", NDEF message length: ");
+    Serial.println(ndefMessageLength);
+    return false;
+  }
+
+  // Print the record type for debugging
+  Serial.print("Record Type: ");
+  for (int i = 0; i < typeLength; i++) {
+    Serial.print((char)ndefRecord[1 + 1 + payloadLengthBytes + i]);
+  }
+  Serial.println();
 
   nfcJsonData = "";
 
-  for (int i = 2; i < payloadLength+2; i++) 
-  {
-    nfcJsonData += (char)encodedMessage[3 + typeLength + i];
+  // Extract JSON payload with validation
+  uint32_t actualJsonLength = 0;
+  for (uint32_t i = 0; i < payloadLength; i++) {
+    byte currentByte = ndefRecord[payloadOffset + i];
+    
+    // Stop at null terminator or if we find the end of JSON
+    if (currentByte == 0x00) {
+      Serial.print("Found null terminator at position: ");
+      Serial.println(i);
+      break;
+    }
+    
+    // Only add printable characters and common JSON characters
+    if (currentByte >= 32 && currentByte <= 126) {
+      nfcJsonData += (char)currentByte;
+      actualJsonLength++;
+    } else {
+      Serial.print("Skipping non-printable byte at position ");
+      Serial.print(i);
+      Serial.print(": 0x");
+      Serial.println(currentByte, HEX);
+    }
+    
+    // Check if we've reached the end of a JSON object
+    if (currentByte == '}') {
+      // Count opening and closing braces to detect complete JSON
+      int braceCount = 0;
+      for (uint32_t j = 0; j <= i; j++) {
+        if (ndefRecord[payloadOffset + j] == '{') braceCount++;
+        else if (ndefRecord[payloadOffset + j] == '}') braceCount--;
+      }
+      
+      if (braceCount == 0) {
+        Serial.print("Found complete JSON object at position: ");
+        Serial.println(i);
+        actualJsonLength = i + 1;
+        break;
+      }
+    }
   }
 
+  Serial.print("Actual JSON length extracted: ");
+  Serial.println(actualJsonLength);
+  Serial.print("Total nfcJsonData length: ");
+  Serial.println(nfcJsonData.length());
+  Serial.println("=== DECODED JSON DATA START ===");
+  Serial.println(nfcJsonData);
+  Serial.println("=== DECODED JSON DATA END ===");
+  
+  // Check if JSON was truncated
+  if (nfcJsonData.length() < payloadLength && !nfcJsonData.endsWith("}")) {
+    Serial.println("WARNING: JSON payload appears to be truncated!");
+    Serial.print("Expected payload length: ");
+    Serial.println(payloadLength);
+    Serial.print("Actual extracted length: ");
+    Serial.println(nfcJsonData.length());
+  }
+  
+  // Trim any trailing whitespace or invalid characters
+  nfcJsonData.trim();
+
   // JSON-Dokument verarbeiten
-  JsonDocument doc;  // Passen Sie die Größe an den JSON-Inhalt an
+  JsonDocument doc;
   DeserializationError error = deserializeJson(doc, nfcJsonData);
   if (error) 
   {
@@ -235,7 +713,7 @@ bool decodeNdefAndReturnJson(const byte* encodedMessage) {
       // Sende die aktualisierten AMS-Daten an alle WebSocket-Clients
       Serial.println("JSON-Dokument erfolgreich verarbeitet");
       Serial.println(doc.as<String>());
-      if (doc["sm_id"].is<String>() && doc["sm_id"] != "") 
+      if (doc["sm_id"].is<String>() && doc["sm_id"] != "" && doc["sm_id"] != "0")
       {
         oledShowProgressBar(2, octoEnabled?5:4, "Spool Tag", "Weighing");
         Serial.println("SPOOL-ID gefunden: " + doc["sm_id"].as<String>());
@@ -255,6 +733,16 @@ bool decodeNdefAndReturnJson(const byte* encodedMessage) {
           oledShowProgressBar(1, 1, "Failure", "Scan spool first");
         }
       }
+      // Brand Filament not registered to Spoolman
+      else if ((!doc["sm_id"].is<String>() || (doc["sm_id"].is<String>() && (doc["sm_id"] == "0" || doc["sm_id"] == "")))
+              && doc["brand"].is<String>() && doc["artnr"].is<String>())
+      {
+        doc["sm_id"] = "0"; // Ensure sm_id is set to 0
+        // If no sm_id is present but the brand is Brand Filament then
+        // create a new spool, maybe brand too, in Spoolman
+        Serial.println("New Brand Filament Tag found!");
+        createBrandFilament(doc, uidString);
+      }
       else 
       {
         Serial.println("Keine SPOOL-ID gefunden.");
@@ -375,6 +863,9 @@ void writeJsonToTag(void *parameter) {
   nfcReadingTaskSuspendRequest = false;
   pauseBambuMqttTask = false;
 
+  free(params->payload);
+  delete params;
+
   vTaskDelete(NULL);
 }
 
@@ -431,7 +922,19 @@ void scanRfidTask(void * parameter) {
 
         oledShowProgressBar(0, octoEnabled?5:4, "Reading", "Detecting tag");
 
-        //vTaskDelay(500 / portTICK_PERIOD_MS);
+        // Wait 1 second after tag detection to stabilize connection
+        Serial.println("Tag detected, waiting 1 second for stabilization...");
+        vTaskDelay(1000 / portTICK_PERIOD_MS);
+
+        // create Tag UID string
+        String uidString = "";
+        for (uint8_t i = 0; i < uidLength; i++) {
+          //TBD: Rework to remove all the string operations
+          uidString += String(uid[i], HEX);
+          if (i < uidLength - 1) {
+              uidString += ":"; // Optional: Trennzeichen hinzufügen
+          }
+        }
         
         if (uidLength == 7)
         {
@@ -444,25 +947,35 @@ void scanRfidTask(void * parameter) {
 
             // We probably have an NTAG2xx card (though it could be Ultralight as well)
             Serial.println("Seems to be an NTAG2xx tag (7 byte UID)");
+            Serial.print("Tag size: ");
+            Serial.print(tagSize);
+            Serial.println(" bytes");
             
             uint8_t numPages = readTagSize()/4;
+            
             for (uint8_t i = 4; i < 4+numPages; i++) {
+              
               if (!nfc.ntag2xx_ReadPage(i, data+(i-4) * 4))
               {
                 break; // Stop if reading fails
               }
+             
               // Check for NDEF message end
               if (data[(i - 4) * 4] == 0xFE) 
               {
+                Serial.println("Found NDEF message end marker");
                 break; // End of NDEF message
               }
 
               yield();
               esp_task_wdt_reset();
-              vTaskDelay(pdMS_TO_TICKS(1));
+              // Increased delay to ensure stable reading
+              vTaskDelay(pdMS_TO_TICKS(5)); // Increased from 1ms to 5ms
             }
-
-            if (!decodeNdefAndReturnJson(data)) 
+            
+            Serial.println("Tag reading completed, starting NDEF decode...");
+            
+            if (!decodeNdefAndReturnJson(data, uidString)) 
             {
               oledShowProgressBar(1, 1, "Failure", "Unknown tag");
               nfcReaderState = NFC_READ_ERROR;
@@ -497,6 +1010,18 @@ void scanRfidTask(void * parameter) {
         Serial.println("Tag entfernt");
         if (!bambuCredentials.autosend_enable) oledShowWeight(weight);
       }
+      // Reset state after successful read when tag is removed
+      else if (!success && nfcReaderState == NFC_READ_SUCCESS)
+      {
+        nfcReaderState = NFC_IDLE;
+        Serial.println("Tag nach erfolgreichem Lesen entfernt - bereit für nächsten Tag");
+      }
+
+      // Add a longer pause after successful reading to prevent immediate re-reading
+      if (nfcReaderState == NFC_READ_SUCCESS) {
+        Serial.println("Tag erfolgreich gelesen - warte 5 Sekunden vor nächstem Scan");
+        vTaskDelay(5000 / portTICK_PERIOD_MS); // 5 second pause
+      }
 
       // aktualisieren der Website wenn sich der Status ändert
       sendNfcData();

src/scale.cpp

@@ -48,6 +48,9 @@ void scale_loop(void * parameter) {
   Serial.println("Scale Loop started");
   Serial.println("++++++++++++++++++++++++++++++");
 
+  vTaskDelay(pdMS_TO_TICKS(500));
+  scale_tare_counter = 10; // damit beim Starten der Waage automatisch getart wird
+  
   for(;;) {
     if (scale.is_ready()) 
     {
@@ -120,7 +123,7 @@ void start_scale(bool touchSensorConnected) {
   if (scale.wait_ready_timeout(1000))
   {
     scale.set_scale(calibrationValue); // this value is obtained by calibrating the scale with known weights; see the README for details
-    scale.tare();
+    //scale.tare();
   }
 
   // Display Gewicht

src/website.cpp

@@ -48,9 +48,15 @@ void onWsEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventTyp
     } else if (type == WS_EVT_PONG) {
         Serial.printf("WebSocket Client #%u pong\n", client->id());
     } else if (type == WS_EVT_DATA) {
-        String message = String((char*)data);
         JsonDocument doc;
-        deserializeJson(doc, message);
+        DeserializationError error = deserializeJson(doc, (char*)data, len);
+        //String message = String((char*)data);
+        //deserializeJson(doc, message);
+
+        if (error) {
+            Serial.println("JSON deserialization failed: " + String(error.c_str()));
+            return;
+        }
 
         if (doc["type"] == "heartbeat") {
             // Sende Heartbeat-Antwort