diff --git a/html/rfid.js b/html/rfid.js
index d3a54a5..52866ea 100644
--- a/html/rfid.js
+++ b/html/rfid.js
@@ -660,6 +660,7 @@ function writeNfcTag() {
         writeButton.textContent = "Writing";
         socket.send(JSON.stringify({
             type: 'writeNfcTag',
+            tagType: 'spool',
             payload: nfcData
         }));
     } else {
@@ -684,6 +685,7 @@ function writeLocationNfcTag() {
         writeButton.textContent = "Writing";
         socket.send(JSON.stringify({
             type: 'writeNfcTag',
+            tagType: 'location',
             payload: nfcData
         }));
     } else {
diff --git a/html/upgrade.html b/html/upgrade.html
index 48c2b33..70d82ee 100644
--- a/html/upgrade.html
+++ b/html/upgrade.html
@@ -57,7 +57,7 @@
         <div class="update-options">
             <div class="update-section">
                 <h2>Firmware Update</h2>
-                <p>Upload a new firmware file (filaman_*.bin)</p>
+                <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">
                         <input type='file' name='update' accept='.bin' required>
@@ -68,7 +68,7 @@
 
             <div class="update-section">
                 <h2>Webpage Update</h2>
-                <p>Upload a new webpage file (webpage_*.bin)</p>
+                <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">
                         <input type='file' name='update' accept='.bin' required>
diff --git a/src/api.cpp b/src/api.cpp
index e19fb9a..4b65f4b 100644
--- a/src/api.cpp
+++ b/src/api.cpp
@@ -9,8 +9,11 @@ volatile spoolmanApiStateType spoolmanApiState = API_INIT;
 //bool spoolman_connected = false;
 String spoolmanUrl = "";
 bool octoEnabled = false;
+bool sendOctoUpdate = false;
 String octoUrl = "";
 String octoToken = "";
+uint16_t remainingWeight = 0;
+bool spoolmanConnected = false;
 
 struct SendToApiParams {
     SpoolmanApiRequestType requestType;
@@ -124,23 +127,52 @@ void sendToApi(void *parameter) {
             Serial.print("Fehler beim Parsen der JSON-Antwort: ");
             Serial.println(error.c_str());
         } else {
-            if (requestType == API_REQUEST_SPOOL_WEIGHT_UPDATE) {
-                uint16_t remaining_weight = doc["remaining_weight"].as<float>();
+            switch(requestType){
+            case API_REQUEST_SPOOL_WEIGHT_UPDATE:
+                remainingWeight = doc["remaining_weight"].as<uint16_t>();
                 Serial.print("Aktuelles Gewicht: ");
-                Serial.println(remaining_weight);
-                oledShowMessage("Remaining: " + String(remaining_weight) + "g");
+                Serial.println(remainingWeight);
+                //oledShowMessage("Remaining: " + String(remaining_weight) + "g");
+                if(!octoEnabled){
+                    // TBD: Do not use Strings...
+                    oledShowProgressBar(1, 1, "Spool Tag", ("Done: " + String(remainingWeight) + " g remain").c_str());
+                    remainingWeight = 0;
+                }else{
+                    // ocoto is enabled, trigger octo update
+                    sendOctoUpdate = true;
+                }
+                break;
+            case API_REQUEST_SPOOL_LOCATION_UPDATE:
+                oledShowProgressBar(1, 1, "Loc. Tag", "Done!");
+                break;
+            case API_REQUEST_SPOOL_TAG_ID_UPDATE:
+                oledShowProgressBar(1, 1, "Write Tag", "Done!");
+                break;
+            case API_REQUEST_OCTO_SPOOL_UPDATE:
+                // TBD: Do not use Strings...
+                oledShowProgressBar(5, 5, "Spool Tag", ("Done: " + String(remainingWeight) + " g remain").c_str());
+                remainingWeight = 0;
+                break;
             }
-            else if ( requestType == API_REQUEST_SPOOL_LOCATION_UPDATE) {
-                oledShowMessage("Location updated!");
-            }
-            
-            vTaskDelay(3000 / portTICK_PERIOD_MS);
         }
         doc.clear();
-
     } else {
+        switch(requestType){
+        case API_REQUEST_SPOOL_WEIGHT_UPDATE:
+        case API_REQUEST_SPOOL_LOCATION_UPDATE:
+        case API_REQUEST_SPOOL_TAG_ID_UPDATE:
+            oledShowProgressBar(1, 1, "Failure!", "Spoolman update");
+            break;
+        case API_REQUEST_OCTO_SPOOL_UPDATE:
+            oledShowProgressBar(1, 1, "Failure!", "Octoprint update");
+            break;
+        case API_REQUEST_BAMBU_UPDATE:
+            oledShowProgressBar(1, 1, "Failure!", "Bambu update");
+            break;
+        }
         Serial.println("Fehler beim Senden an Spoolman! HTTP Code: " + String(httpCode));
-        oledShowMessage("Spoolman update failed");
+
+        // TBD: really required?
         vTaskDelay(2000 / portTICK_PERIOD_MS);
     }
 
@@ -155,6 +187,8 @@ void sendToApi(void *parameter) {
 }
 
 bool updateSpoolTagId(String uidString, const char* payload) {
+    oledShowProgressBar(2, 3, "Write Tag", "Update Spoolman");
+
     JsonDocument doc;
     DeserializationError error = deserializeJson(doc, payload);
     
@@ -185,7 +219,7 @@ bool updateSpoolTagId(String uidString, const char* payload) {
     Serial.print("Update Payload: ");
     Serial.println(updatePayload);
 
-    SendToApiParams* params = new SendToApiParams();
+    SendToApiParams* params = new SendToApiParams();  
     if (params == nullptr) {
         Serial.println("Fehler: Kann Speicher für Task-Parameter nicht allokieren.");
         return false;
@@ -208,13 +242,15 @@ bool updateSpoolTagId(String uidString, const char* payload) {
     updateDoc.clear();
 
     // Update Spool weight
-    if (weight > 10) updateSpoolWeight(doc["sm_id"].as<String>(), weight);
+    //TBD: how to handle this with spool and locatin tags? Also potential parallel access again
+    //if (weight > 10) updateSpoolWeight(doc["sm_id"].as<String>(), weight);
 
     return true;
 }
 
 uint8_t updateSpoolWeight(String spoolId, uint16_t weight) {
     HEAP_DEBUG_MESSAGE("updateSpoolWeight begin");
+    oledShowProgressBar(3, octoEnabled?5:4, "Spool Tag", "Spoolman update");
     String spoolsUrl = spoolmanUrl + apiUrl + "/spool/" + spoolId + "/measure";
     Serial.print("Update Spule mit URL: ");
     Serial.println(spoolsUrl);
@@ -230,6 +266,7 @@ uint8_t updateSpoolWeight(String spoolId, uint16_t weight) {
 
     SendToApiParams* params = new SendToApiParams();
     if (params == nullptr) {
+        // TBD: reset ESP instead of showing a message
         Serial.println("Fehler: Kann Speicher für Task-Parameter nicht allokieren.");
         return 0;
     }
@@ -257,6 +294,8 @@ uint8_t updateSpoolWeight(String spoolId, uint16_t weight) {
 uint8_t updateSpoolLocation(String spoolId, String location){
     HEAP_DEBUG_MESSAGE("updateSpoolLocation begin");
 
+    oledShowProgressBar(3, octoEnabled?5:4, "Loc. Tag", "Spoolman update");
+
     String spoolsUrl = spoolmanUrl + apiUrl + "/spool/" + spoolId;
     Serial.print("Update Spule mit URL: ");
     Serial.println(spoolsUrl);
@@ -280,6 +319,7 @@ uint8_t updateSpoolLocation(String spoolId, String location){
     params->spoolsUrl = spoolsUrl;
     params->updatePayload = updatePayload;
 
+    if(spoolmanApiState == API_IDLE){
     // Erstelle die Task
     BaseType_t result = xTaskCreate(
         sendToApi,                // Task-Funktion
@@ -290,6 +330,10 @@ uint8_t updateSpoolLocation(String spoolId, String location){
         NULL                      // Task-Handle (nicht benötigt)
     );
 
+    }else{
+        Serial.println("Not spawning new task, API still active!");
+    }
+
     updateDoc.clear();
 
     HEAP_DEBUG_MESSAGE("updateSpoolLocation end");
@@ -297,6 +341,8 @@ uint8_t updateSpoolLocation(String spoolId, String location){
 }
 
 bool updateSpoolOcto(int spoolId) {
+    oledShowProgressBar(4, octoEnabled?5:4, "Spool Tag", "Octoprint update");
+
     String spoolsUrl = octoUrl + "/plugin/Spoolman/selectSpool";
     Serial.print("Update Spule in Octoprint mit URL: ");
     Serial.println(spoolsUrl);
@@ -551,9 +597,6 @@ bool checkSpoolmanInstance(const String& url) {
 
     if (httpCode > 0) {
         if (httpCode == HTTP_CODE_OK) {
-            oledShowMessage("Spoolman available");
-            vTaskDelay(1000 / portTICK_PERIOD_MS);
-
             String payload = http.getString();
             JsonDocument doc;
             DeserializationError error = deserializeJson(doc, payload);
@@ -564,6 +607,7 @@ bool checkSpoolmanInstance(const String& url) {
                 if (!checkSpoolmanExtraFields()) {
                     Serial.println("Fehler beim Überprüfen der Extrafelder.");
 
+                    // TBD
                     oledShowMessage("Spoolman Error creating Extrafields");
                     vTaskDelay(2000 / portTICK_PERIOD_MS);
                     
@@ -572,6 +616,7 @@ bool checkSpoolmanInstance(const String& url) {
 
                 spoolmanApiState = API_IDLE;
                 oledShowTopRow();
+                spoolmanConnected = true;
                 return strcmp(status, "healthy") == 0;
             }
 
@@ -617,6 +662,7 @@ String loadSpoolmanUrl() {
 }
 
 bool initSpoolman() {
+    oledShowProgressBar(3, 7, DISPLAY_BOOT_TEXT, "Spoolman init");
     spoolmanUrl = loadSpoolmanUrl();
     spoolmanUrl.trim();
     if (spoolmanUrl == "") {
diff --git a/src/api.h b/src/api.h
index 5311dfc..23fb6d8 100644
--- a/src/api.h
+++ b/src/api.h
@@ -24,8 +24,10 @@ extern volatile spoolmanApiStateType spoolmanApiState;
 extern bool spoolman_connected;
 extern String spoolmanUrl;
 extern bool octoEnabled;
+extern bool sendOctoUpdate;
 extern String octoUrl;
 extern String octoToken;
+extern bool spoolmanConnected;
 
 bool checkSpoolmanInstance(const String& url);
 bool saveSpoolmanUrl(const String& url, bool octoOn, const String& octoWh, const String& octoTk);
diff --git a/src/bambu.cpp b/src/bambu.cpp
index c738ec8..21fc6fa 100644
--- a/src/bambu.cpp
+++ b/src/bambu.cpp
@@ -627,6 +627,7 @@ bool setupMqtt() {
 
     if (bambuCredentials.ip != "" && bambuCredentials.accesscode != "" && bambuCredentials.serial != "") 
     {
+        oledShowProgressBar(4, 7, DISPLAY_BOOT_TEXT, "Bambu init");
         bambuDisabled = false;
         sslClient.setCACert(root_ca);
         sslClient.setInsecure();
diff --git a/src/config.cpp b/src/config.cpp
index 644177e..359031a 100644
--- a/src/config.cpp
+++ b/src/config.cpp
@@ -26,16 +26,11 @@ const uint8_t TTP223_PIN = 25;
 
 
 // ***** Display
-// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
-// On an ESP32:   21(SDA),  22(SCL)
-const int8_t OLED_RESET = -1; // Reset pin # (or -1 if sharing Arduino reset pin)
-const uint8_t SCREEN_ADDRESS = 0x3C; ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
-const uint8_t SCREEN_WIDTH = 128; // OLED display width, in pixels
-const uint8_t SCREEN_HEIGHT = 64; // OLED display height, in pixels
 const uint8_t OLED_TOP_START = 0;
 const uint8_t OLED_TOP_END = 16;
 const uint8_t OLED_DATA_START = 17;
 const uint8_t OLED_DATA_END = SCREEN_HEIGHT;
+
 // ***** Display
 
 // ***** Webserver
diff --git a/src/config.h b/src/config.h
index ecccd51..88c57c0 100644
--- a/src/config.h
+++ b/src/config.h
@@ -25,6 +25,14 @@
 
 #define BAMBU_USERNAME "bblp"
 
+#define OLED_RESET                  -1      // Reset pin # (or -1 if sharing Arduino reset pin)
+#define SCREEN_ADDRESS              0x3CU   // See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
+#define SCREEN_WIDTH                128U
+#define SCREEN_HEIGHT               64U
+#define SCREEN_TOP_BAR_HEIGHT       16U
+#define SCREEN_PROGRESS_BAR_HEIGHT  12U
+#define DISPLAY_BOOT_TEXT           "FilaMan"
+
 
 extern const uint8_t PN532_IRQ;
 extern const uint8_t PN532_RESET;
@@ -36,10 +44,6 @@ extern const uint16_t SCALE_LEVEL_WEIGHT;
 
 extern const uint8_t TTP223_PIN;
 
-extern const int8_t OLED_RESET;
-extern const uint8_t SCREEN_ADDRESS;
-extern const uint8_t SCREEN_WIDTH;
-extern const uint8_t SCREEN_HEIGHT;
 extern const uint8_t OLED_TOP_START;
 extern const uint8_t OLED_TOP_END;
 extern const uint8_t OLED_DATA_START;
diff --git a/src/debug.h b/src/debug.h
index 8cc1efc..65f19e1 100644
--- a/src/debug.h
+++ b/src/debug.h
@@ -7,6 +7,6 @@
     #define HEAP_DEBUG_MESSAGE(location) 
 #endif
 
-inline void printHeapDebugData(String location){
+inline void printHeapDebugData(const char *location){
     Serial.println("Heap: " + String(ESP.getMinFreeHeap()/1024) + "\t" + String(ESP.getFreeHeap()/1024) + "\t" + String(ESP.getMaxAllocHeap()/1024) + "\t" + location);
 }
\ No newline at end of file
diff --git a/src/display.cpp b/src/display.cpp
index dab0ccf..0ccaa5f 100644
--- a/src/display.cpp
+++ b/src/display.cpp
@@ -2,10 +2,12 @@
 #include "api.h"
 #include <vector>
 #include "icons.h"
+#include "main.h"
 
 Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
 
 bool wifiOn = false;
+bool iconToggle = false;
 
 void setupDisplay() {
     if (!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) {
@@ -14,15 +16,10 @@ void setupDisplay() {
     }
     display.setTextColor(WHITE);
     display.clearDisplay();
-    display.display();
 
-    // Show initial display buffer contents on the screen --
-    // the library initializes this with an Adafruit splash screen.
-    display.setTextColor(WHITE);
-    display.display();
+
     oledShowTopRow();
-    oledShowMessage("FilaMan v" + String(VERSION));
-    vTaskDelay(2000 / portTICK_PERIOD_MS);
+    oledShowProgressBar(0, 7, DISPLAY_BOOT_TEXT, "Display init");
 }
 
 void oledclearline() {
@@ -45,14 +42,14 @@ void oledcleardata() {
     //display.display();
 }
 
-int oled_center_h(String text) {
+int oled_center_h(const String &text) {
     int16_t x1, y1;
     uint16_t w, h;
     display.getTextBounds(text, 0, 0, &x1, &y1, &w, &h);
     return (SCREEN_WIDTH - w) / 2;
 }
 
-int oled_center_v(String text) {
+int oled_center_v(const String &text) {
     int16_t x1, y1;
     uint16_t w, h;
     display.getTextBounds(text, 0, OLED_DATA_START, &x1, &y1, &w, &h);
@@ -60,7 +57,7 @@ int oled_center_v(String text) {
     return OLED_DATA_START + ((OLED_DATA_END - OLED_DATA_START - h) / 2);
 }
 
-std::vector<String> splitTextIntoLines(String text, uint8_t textSize) {
+std::vector<String> splitTextIntoLines(const String &text, uint8_t textSize) {
     std::vector<String> lines;
     display.setTextSize(textSize);
     
@@ -120,7 +117,7 @@ std::vector<String> splitTextIntoLines(String text, uint8_t textSize) {
     return lines;
 }
 
-void oledShowMultilineMessage(String message, uint8_t size) {
+void oledShowMultilineMessage(const String &message, uint8_t size) {
     std::vector<String> lines;
     int maxLines = 3;  // Maximale Anzahl Zeilen für size 2
     
@@ -148,7 +145,7 @@ void oledShowMultilineMessage(String message, uint8_t size) {
     display.display();
 }
 
-void oledShowMessage(String message, uint8_t size) {
+void oledShowMessage(const String &message, uint8_t size) {
     oledcleardata();
     display.setTextSize(size);
     display.setTextWrap(false);
@@ -171,22 +168,46 @@ void oledShowMessage(String message, uint8_t size) {
 void oledShowTopRow() {
     oledclearline();
 
-    if (bambu_connected == 1) {
-        display.drawBitmap(50, 0, bitmap_bambu_on , 16, 16, WHITE);
-    } else {
-        display.drawBitmap(50, 0, bitmap_off , 16, 16, WHITE);
-    }
+    display.setTextSize(1);
+    display.setCursor(0, 4);
+    display.print("v");
+    display.print(VERSION);
 
-    if (spoolmanApiState != API_INIT) {
-        display.drawBitmap(80, 0, bitmap_spoolman_on , 16, 16, WHITE);
-    } else {
-        display.drawBitmap(80, 0, bitmap_off , 16, 16, WHITE);
-    }
+    iconToggle = !iconToggle;
 
-    if (wifiOn == 1) {
-        display.drawBitmap(107, 0, wifi_on , 16, 16, WHITE);
-    } else {
-        display.drawBitmap(107, 0, wifi_off , 16, 16, WHITE);
+    // Do not show status indicators during boot
+    if(!booting){
+        if(bambuDisabled == false) {
+            if (bambu_connected == 1) {
+                display.drawBitmap(50, 0, bitmap_bambu_on , 16, 16, WHITE);
+            } else {
+                if(iconToggle){
+                    display.drawBitmap(50, 0, bitmap_bambu_on , 16, 16, WHITE);
+                    display.drawLine(50, 15, 66, 0, WHITE);
+                    display.drawLine(51, 15, 67, 0, WHITE);
+                }
+            }
+        }
+
+        if (spoolmanConnected) {
+            display.drawBitmap(80, 0, bitmap_spoolman_on , 16, 16, WHITE);
+        } else {
+            if(iconToggle){
+                display.drawBitmap(80, 0, bitmap_spoolman_on , 16, 16, WHITE);
+                display.drawLine(80, 15, 96, 0, WHITE);
+                display.drawLine(81, 15, 97, 0, WHITE);
+            }
+        }
+
+        if (wifiOn == 1) {
+            display.drawBitmap(107, 0, wifi_on , 16, 16, WHITE);
+        } else {
+            if(iconToggle){
+                display.drawBitmap(107, 0, wifi_on , 16, 16, WHITE);
+                display.drawLine(107, 15, 123, 0, WHITE);
+                display.drawLine(108, 15, 124, 0, WHITE);
+            }
+        }
     }
     
     display.display();
@@ -214,6 +235,27 @@ void oledShowIcon(const char* icon) {
     display.display();
 }
 
+void oledShowProgressBar(const uint8_t step, const uint8_t numSteps, const char* largeText, const char* statusMessage){
+    assert(step <= numSteps);
+
+    // clear data and bar area
+    display.fillRect(0, OLED_DATA_START, SCREEN_WIDTH, SCREEN_HEIGHT-16, BLACK);
+
+    
+    display.setTextWrap(false);
+    display.setTextSize(2);
+    display.setCursor(0, OLED_DATA_START+4);
+    display.print(largeText);
+    display.setTextSize(1);
+    display.setCursor(0, OLED_DATA_END-SCREEN_PROGRESS_BAR_HEIGHT-10);
+    display.print(statusMessage);
+
+    const int barLength = ((SCREEN_WIDTH-2)*step)/numSteps;
+    display.drawRoundRect(0, SCREEN_HEIGHT-SCREEN_PROGRESS_BAR_HEIGHT, SCREEN_WIDTH, 12, 6, WHITE);
+    display.fillRoundRect(1, SCREEN_HEIGHT-SCREEN_PROGRESS_BAR_HEIGHT+1, barLength, 10, 6, WHITE);
+    display.display();
+}
+
 void oledShowWeight(uint16_t weight) {
     // Display Gewicht
     oledcleardata();
diff --git a/src/display.h b/src/display.h
index 173c48e..c4cdb08 100644
--- a/src/display.h
+++ b/src/display.h
@@ -13,11 +13,13 @@ extern bool wifiOn;
 void setupDisplay();
 void oledclearline();
 void oledcleardata();
-int oled_center_h(String text);
-int oled_center_v(String text);
+int oled_center_h(const String &text);
+int oled_center_v(const String &text);
+
+void oledShowProgressBar(const uint8_t step, const uint8_t numSteps, const char* largeText, const char* statusMessage);
 
 void oledShowWeight(uint16_t weight);
-void oledShowMessage(String message, uint8_t size = 2);
+void oledShowMessage(const String &message, uint8_t size = 2);
 void oledShowTopRow();
 void oledShowIcon(const char* icon);
 
diff --git a/src/main.cpp b/src/main.cpp
index 96fa2f0..f160e95 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -16,6 +16,7 @@
 bool mainTaskWasPaused = 0;
 uint8_t scaleTareCounter = 0;
 bool touchSensorConnected = false;
+bool booting = true;
 
 // ##### SETUP #####
 void setup() {
@@ -63,6 +64,7 @@ void setup() {
   bool panic = true; // Wenn true, löst ein WDT-Timeout einen System-Panik aus
   esp_task_wdt_init(10, panic);
 
+  booting = false;
   // Aktuellen Task (loopTask) zum Watchdog hinzufügen
   esp_task_wdt_add(NULL);
 }
@@ -118,6 +120,12 @@ void loop() {
     checkWiFiConnection();
   }
 
+  // Periodic display update
+  if (intervalElapsed(currentMillis, lastWifiCheckTime, 1000)) 
+  {
+    oledShowTopRow();
+  }
+
   // Wenn Bambu auto set Spool aktiv
   if (bambuCredentials.autosend_enable && autoSetToBambuSpoolId > 0) 
   {
@@ -212,19 +220,14 @@ 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) {
-    oledShowIcon("loading");
+  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;
+
     if (updateSpoolWeight(activeSpoolId, weight)) 
     {
-      oledShowIcon("success");
-      vTaskDelay(2000 / portTICK_PERIOD_MS);
       weightSend = 1;
-      autoSetToBambuSpoolId = activeSpoolId.toInt();
-
-      if (octoEnabled) 
-      {
-        updateSpoolOcto(autoSetToBambuSpoolId);
-      }
+      
     }
     else
     {
@@ -232,6 +235,16 @@ void loop() {
       vTaskDelay(2000 / portTICK_PERIOD_MS);
     }
   }
+
+  if(sendOctoUpdate && spoolmanApiState == API_IDLE){
+    autoSetToBambuSpoolId = activeSpoolId.toInt();
+
+    if(octoEnabled) 
+    {
+      updateSpoolOcto(autoSetToBambuSpoolId);
+    }
+    sendOctoUpdate = false;
+  }
   
   esp_task_wdt_reset();
 }
diff --git a/src/main.h b/src/main.h
new file mode 100644
index 0000000..27c479b
--- /dev/null
+++ b/src/main.h
@@ -0,0 +1,9 @@
+#ifndef MAIN_H
+#define MAIN_H
+
+#include <Arduino.h>
+
+
+extern bool booting;
+
+#endif
\ No newline at end of file
diff --git a/src/nfc.cpp b/src/nfc.cpp
index e7aec4b..fe1a486 100644
--- a/src/nfc.cpp
+++ b/src/nfc.cpp
@@ -18,8 +18,14 @@ JsonDocument rfidData;
 String activeSpoolId = "";
 String lastSpoolId = "";
 String nfcJsonData = "";
+bool tagProcessed = false;
 volatile bool pauseBambuMqttTask = false;
 
+struct NfcWriteParameterType {
+  bool tagType;
+  char* payload;
+};
+
 volatile nfcReaderStateType nfcReaderState = NFC_IDLE;
 // 0 = nicht gelesen
 // 1 = erfolgreich gelesen
@@ -196,6 +202,8 @@ uint8_t ntag2xx_WriteNDEF(const char *payload) {
 }
 
 bool decodeNdefAndReturnJson(const byte* encodedMessage) {
+  oledShowProgressBar(1, octoEnabled?5:4, "Reading", "Decoding data");
+
   byte typeLength = encodedMessage[3];
   byte payloadLength = encodedMessage[4];
 
@@ -219,35 +227,41 @@ bool decodeNdefAndReturnJson(const byte* encodedMessage) {
   } 
   else 
   {
-    // 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"] != "") 
-    {
-      Serial.println("SPOOL-ID gefunden: " + doc["sm_id"].as<String>());
-      activeSpoolId = doc["sm_id"].as<String>();
-      lastSpoolId = activeSpoolId;
-    }
-    else if(doc["location"].is<String>() && doc["location"] != "")
-    {
-      Serial.println("Location Tag found!");
-      String location = doc["location"].as<String>();
-      if(lastSpoolId != ""){
-        updateSpoolLocation(lastSpoolId, location);
-      }
-      else
+    // If spoolman is unavailable, there is no point in continuing
+    if(spoolmanConnected){
+      // 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"] != "") 
       {
-        Serial.println("Location update tag scanned without scanning spool before!");
-        oledShowMessage("No spool scanned before!");
-      }
+        oledShowProgressBar(2, octoEnabled?5:4, "Spool Tag", "Weighing");
+        Serial.println("SPOOL-ID gefunden: " + doc["sm_id"].as<String>());
+        activeSpoolId = doc["sm_id"].as<String>();
+        lastSpoolId = activeSpoolId;
 
-    }
-    else 
-    {
-      Serial.println("Keine SPOOL-ID gefunden.");
-      activeSpoolId = "";
-      oledShowMessage("Unknown Spool");
-      vTaskDelay(2000 / portTICK_PERIOD_MS);
+        Serial.println("Api state: " + String(spoolmanApiState));
+      }
+      else if(doc["location"].is<String>() && doc["location"] != "")
+      {
+        Serial.println("Location Tag found!");
+        String location = doc["location"].as<String>();
+        if(lastSpoolId != ""){
+          updateSpoolLocation(lastSpoolId, location);
+        }
+        else
+        {
+          Serial.println("Location update tag scanned without scanning spool before!");
+          oledShowProgressBar(1, 1, "Failure", "Scan spool first");
+        }
+      }
+      else 
+      {
+        Serial.println("Keine SPOOL-ID gefunden.");
+        activeSpoolId = "";
+        oledShowProgressBar(1, 1, "Failure", "Unkown tag");
+      }
+    }else{
+      oledShowProgressBar(octoEnabled?5:4, octoEnabled?5:4, "Failure!", "Spoolman unavailable");
     }
   }
 
@@ -257,11 +271,11 @@ bool decodeNdefAndReturnJson(const byte* encodedMessage) {
 }
 
 void writeJsonToTag(void *parameter) {
-  const char* payload = (const char*)parameter;
+  NfcWriteParameterType* params = (NfcWriteParameterType*)parameter;
 
   // Gib die erstellte NDEF-Message aus
   Serial.println("Erstelle NDEF-Message...");
-  Serial.println(payload);
+  Serial.println(params->payload);
 
   nfcReaderState = NFC_WRITING;
   vTaskSuspend(RfidReaderTask);
@@ -269,19 +283,24 @@ void writeJsonToTag(void *parameter) {
 
   //pauseBambuMqttTask = true;
   // aktualisieren der Website wenn sich der Status ändert
-  sendNfcData(nullptr);
+  sendNfcData();
   vTaskDelay(100 / portTICK_PERIOD_MS);
-  oledShowMessage("Waiting for NFC-Tag");
-  
+  Serial.println("CP 1");
   // Wait 10sec for tag
   uint8_t success = 0;
   String uidString = "";
   for (uint16_t i = 0; i < 20; i++) {
+    Serial.println("CP 2");
     uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };  // Buffer to store the returned UID
     uint8_t uidLength;
-    success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength, 500);
+    // yield before potentially waiting for 400ms
+    yield();
+    esp_task_wdt_reset();
+    success = nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength, 400);
     if (success) {
+      Serial.println("CP 3.1");
       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
@@ -289,10 +308,10 @@ void writeJsonToTag(void *parameter) {
       }
       foundNfcTag(nullptr, success);
       break;
+    }else{
+      Serial.println("CP 3.2");
     }
 
-    if (i == 0) oledShowMessage("Waiting for NFC-Tag");
-
     yield();
     esp_task_wdt_reset();
     vTaskDelay(pdMS_TO_TICKS(1));
@@ -300,29 +319,37 @@ void writeJsonToTag(void *parameter) {
 
   if (success)
   {
-    oledShowIcon("transfer");
+    oledShowProgressBar(1, 3, "Write Tag", "Writing");
+
     // Schreibe die NDEF-Message auf den Tag
-    success = ntag2xx_WriteNDEF(payload);
+    success = ntag2xx_WriteNDEF(params->payload);
     if (success) 
     {
         Serial.println("NDEF-Message erfolgreich auf den Tag geschrieben");
         //oledShowMessage("NFC-Tag written");
-        oledShowIcon("success");
-        vTaskDelay(1000 / portTICK_PERIOD_MS);
+        //vTaskDelay(1000 / portTICK_PERIOD_MS);
         nfcReaderState = NFC_WRITE_SUCCESS;
         // aktualisieren der Website wenn sich der Status ändert
-        sendNfcData(nullptr);
+        sendNfcData();
         pauseBambuMqttTask = false;
         
-        if (updateSpoolTagId(uidString, payload)) {
-          uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };  // Buffer to store the returned UID
-          uint8_t uidLength;
-          oledShowIcon("success");
-          while (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength, 500)) {
-            yield();
+        if(params->tagType){
+          // TBD: should this be simplified?
+          if (updateSpoolTagId(uidString, params->payload) && params->tagType) {
+            
+          }else{
+            // Potentially handle errors
           }
+        }else{
+          oledShowProgressBar(1, 1, "Write Tag", "Done!");
         }
-          
+        uint8_t uid[] = { 0, 0, 0, 0, 0, 0, 0 };  // Buffer to store the returned UID
+        uint8_t uidLength;
+        yield();
+        esp_task_wdt_reset();
+        while (nfc.readPassiveTargetID(PN532_MIFARE_ISO14443A, uid, &uidLength, 400)) {
+          yield();
+        } 
         vTaskResume(RfidReaderTask);
         vTaskDelay(500 / portTICK_PERIOD_MS);        
     } 
@@ -337,13 +364,13 @@ void writeJsonToTag(void *parameter) {
   else
   {
     Serial.println("Fehler: Kein Tag zu schreiben gefunden.");
-    oledShowMessage("No NFC-Tag found");
+    oledShowProgressBar(1, 1, "Failure!", "No tag found");
     vTaskDelay(2000 / portTICK_PERIOD_MS);
     nfcReaderState = NFC_IDLE;
   }
   
   sendWriteResult(nullptr, success);
-  sendNfcData(nullptr);
+  sendNfcData();
 
   vTaskResume(RfidReaderTask);
   pauseBambuMqttTask = false;
@@ -351,20 +378,26 @@ void writeJsonToTag(void *parameter) {
   vTaskDelete(NULL);
 }
 
-void startWriteJsonToTag(const char* payload) {
-  char* payloadCopy = strdup(payload);
+void startWriteJsonToTag(const bool isSpoolTag, const char* payload) {
+  NfcWriteParameterType* parameters = new NfcWriteParameterType();
+  parameters->tagType = isSpoolTag;
+  parameters->payload = strdup(payload);
   
   // Task nicht mehrfach starten
-  if (nfcReaderState != NFC_WRITING) {
+  if (nfcReaderState == NFC_IDLE) {
+    oledShowProgressBar(0, 1, "Write Tag", "Place tag now");
     // Erstelle die Task
     xTaskCreate(
         writeJsonToTag,        // Task-Funktion
         "WriteJsonToTagTask",       // Task-Name
         5115,                        // Stackgröße in Bytes
-        (void*)payloadCopy,         // Parameter
+        (void*)parameters,         // Parameter
         rfidWriteTaskPrio,           // Priorität
         NULL                         // Task-Handle (nicht benötigt)
     );
+  }else{
+    oledShowProgressBar(0, 1, "FAILURE", "NFC busy!");
+    // TBD: Add proper error handling (website)
   }
 }
 
@@ -384,14 +417,19 @@ void scanRfidTask(void * parameter) {
 
       foundNfcTag(nullptr, success);
       
-      if (success && nfcReaderState != NFC_READ_SUCCESS)
+      // As long as there is still a tag on the reader, do not try to read it again
+      if (success && nfcReaderState == NFC_IDLE)
       {
+        // Set the current tag as not processed
+        tagProcessed = false;
+
         // Display some basic information about the card
         Serial.println("Found an ISO14443A card");
 
         nfcReaderState = NFC_READING;
 
-        oledShowIcon("transfer");
+        oledShowProgressBar(0, octoEnabled?5:4, "Reading", "Detecting tag");
+
         vTaskDelay(500 / portTICK_PERIOD_MS);
 
         if (uidLength == 7)
@@ -425,8 +463,7 @@ void scanRfidTask(void * parameter) {
 
             if (!decodeNdefAndReturnJson(data)) 
             {
-              oledShowMessage("NFC-Tag unknown");
-              vTaskDelay(2000 / portTICK_PERIOD_MS);
+              oledShowProgressBar(1, 1, "Failure", "Unknown tag");
               nfcReaderState = NFC_READ_ERROR;
             }
             else 
@@ -438,12 +475,14 @@ void scanRfidTask(void * parameter) {
           }
           else
           {
-            oledShowMessage("NFC-Tag read error");
+            oledShowProgressBar(1, 1, "Failure", "Tag read error");
             nfcReaderState = NFC_READ_ERROR;
           }
         }
         else
         {
+          //TBD: Show error here?!
+          oledShowProgressBar(1, 1, "Failure", "Unkown tag type");
           Serial.println("This doesn't seem to be an NTAG2xx tag (UUID length != 7 bytes)!");
         }
       }
@@ -459,22 +498,21 @@ void scanRfidTask(void * parameter) {
       }
 
       // aktualisieren der Website wenn sich der Status ändert
-      sendNfcData(nullptr);
+      sendNfcData();
     }
     yield();
   }
 }
 
 void startNfc() {
+  oledShowProgressBar(5, 7, DISPLAY_BOOT_TEXT, "NFC init");
   nfc.begin();                                           // Beginne Kommunikation mit RFID Leser
   delay(1000);
   unsigned long versiondata = nfc.getFirmwareVersion();  // Lese Versionsnummer der Firmware aus
   if (! versiondata) {                                   // Wenn keine Antwort kommt
     Serial.println("Kann kein RFID Board finden !");            // Sende Text "Kann kein..." an seriellen Monitor
-    //delay(5000);
-    //ESP.restart();
     oledShowMessage("No RFID Board found");
-    delay(2000);
+    vTaskDelay(2000 / portTICK_PERIOD_MS);
   }
   else {
     Serial.print("Chip PN5 gefunden"); Serial.println((versiondata >> 24) & 0xFF, HEX); // Sende Text und Versionsinfos an seriellen
diff --git a/src/nfc.h b/src/nfc.h
index 8f8cf5a..2c3d5f3 100644
--- a/src/nfc.h
+++ b/src/nfc.h
@@ -15,7 +15,7 @@ typedef enum{
 
 void startNfc();
 void scanRfidTask(void * parameter);
-void startWriteJsonToTag(const char* payload);
+void startWriteJsonToTag(const bool isSpoolTag, const char* payload);
 
 extern TaskHandle_t RfidReaderTask;
 extern String nfcJsonData;
@@ -23,6 +23,7 @@ extern String activeSpoolId;
 extern String lastSpoolId;
 extern volatile nfcReaderStateType nfcReaderState;
 extern volatile bool pauseBambuMqttTask;
+extern bool tagProcessed;
 
 
 
diff --git a/src/ota.cpp b/src/ota.cpp
index d22bc6a..a98b949 100644
--- a/src/ota.cpp
+++ b/src/ota.cpp
@@ -224,7 +224,7 @@ void handleUpdate(AsyncWebServer &server) {
             static int lastProgress = -1;
             if (currentProgress != lastProgress && (currentProgress % 10 == 0 || final)) {
                 sendUpdateProgress(currentProgress, "uploading");
-                oledShowMessage("Update: " + String(currentProgress) + "%");
+                oledShowProgressBar(currentProgress, 100, "Update", "Download");
                 vTaskDelay(50 / portTICK_PERIOD_MS);
                 lastProgress = currentProgress;
             }
diff --git a/src/scale.cpp b/src/scale.cpp
index 8172d9f..4be30c7 100644
--- a/src/scale.cpp
+++ b/src/scale.cpp
@@ -115,7 +115,7 @@ void start_scale(bool touchSensorConnected) {
     }
   }
 
-  oledShowMessage("Scale Tare Please remove all");
+  oledShowProgressBar(6, 7, DISPLAY_BOOT_TEXT, "Tare scale");
   for (uint16_t i = 0; i < 2000; i++) {
     yield();
     vTaskDelay(pdMS_TO_TICKS(1));
@@ -162,7 +162,7 @@ uint8_t calibrate_scale() {
   {
     
     scale.set_scale();
-    oledShowMessage("Step 1 empty Scale");
+    oledShowProgressBar(0, 3, "Scale Cal.", "Empty Scale");
 
     for (uint16_t i = 0; i < 5000; i++) {
       yield();
@@ -174,7 +174,7 @@ uint8_t calibrate_scale() {
     Serial.println("Tare done...");
     Serial.print("Place a known weight on the scale...");
 
-    oledShowMessage("Step 2 Place the weight");
+    oledShowProgressBar(1, 3, "Scale Cal.", "Place the weight");
 
     for (uint16_t i = 0; i < 5000; i++) {
       yield();
@@ -207,9 +207,7 @@ uint8_t calibrate_scale() {
       Serial.print("Verified stored value: ");
       Serial.println(verifyValue);
 
-      Serial.println("End calibration, remove weight");
-
-      oledShowMessage("Remove weight");
+      oledShowProgressBar(2, 3, "Scale Cal.", "Remove weight");
 
       scale.set_scale(newCalibrationValue);
       for (uint16_t i = 0; i < 2000; i++) {
@@ -218,7 +216,7 @@ uint8_t calibrate_scale() {
         esp_task_wdt_reset();
       }
       
-      oledShowMessage("Scale calibrated");
+      oledShowProgressBar(3, 3, "Scale Cal.", "Completed");
 
       // For some reason it is not possible to re-tare the scale here, it will result in a wdt timeout. Instead let the scale loop do the taring
       //scale.tare();
@@ -232,21 +230,18 @@ uint8_t calibrate_scale() {
 
       returnState = 1;
     }
-   
     else
     {
-      {
-        Serial.println("Calibration value is invalid. Please recalibrate.");
+      Serial.println("Calibration value is invalid. Please recalibrate.");
 
-        oledShowMessage("Calibration ERROR Try again");
+      oledShowProgressBar(3, 3, "Failure", "Calibration error");
 
-        for (uint16_t i = 0; i < 50000; i++) {
-          yield();
-          vTaskDelay(pdMS_TO_TICKS(1));
-          esp_task_wdt_reset();
-        }
-        returnState = 0;
+      for (uint16_t i = 0; i < 50000; i++) {
+        yield();
+        vTaskDelay(pdMS_TO_TICKS(1));
+        esp_task_wdt_reset();
       }
+      returnState = 0;
     } 
   }
   else 
diff --git a/src/website.cpp b/src/website.cpp
index 6723a0c..7c40fc7 100644
--- a/src/website.cpp
+++ b/src/website.cpp
@@ -34,7 +34,7 @@ void onWsEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventTyp
         Serial.println("Neuer Client verbunden!");
         // Sende die AMS-Daten an den neuen Client
         if (!bambuDisabled) sendAmsData(client);
-        sendNfcData(client);
+        sendNfcData();
         foundNfcTag(client, 0);
         sendWriteResult(client, 3);
 
@@ -52,8 +52,6 @@ void onWsEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventTyp
         JsonDocument doc;
         deserializeJson(doc, message);
 
-        bool spoolmanConnected = (spoolmanApiState != API_INIT);
-
         if (doc["type"] == "heartbeat") {
             // Sende Heartbeat-Antwort
             ws.text(client->id(), "{"
@@ -69,7 +67,8 @@ void onWsEvent(AsyncWebSocket *server, AsyncWebSocketClient *client, AwsEventTyp
                 // Versuche NFC-Daten zu schreiben
                 String payloadString;
                 serializeJson(doc["payload"], payloadString);
-                startWriteJsonToTag(payloadString.c_str());
+
+                startWriteJsonToTag((doc["tagType"] == "spool") ? true : false, payloadString.c_str());
             }
         }
 
@@ -150,11 +149,11 @@ void sendWriteResult(AsyncWebSocketClient *client, uint8_t success) {
 void foundNfcTag(AsyncWebSocketClient *client, uint8_t success) {
     if (success == lastSuccess) return;
     ws.textAll("{\"type\":\"nfcTag\", \"payload\":{\"found\": " + String(success) + "}}");
-    sendNfcData(nullptr);
+    sendNfcData();
     lastSuccess = success;
 }
 
-void sendNfcData(AsyncWebSocketClient *client) {
+void sendNfcData() {
     if (lastnfcReaderState == nfcReaderState) return;
     // TBD: Why is there no status for reading the tag?
     switch(nfcReaderState){
@@ -189,6 +188,7 @@ void sendAmsData(AsyncWebSocketClient *client) {
 }
 
 void setupWebserver(AsyncWebServer &server) {
+    oledShowProgressBar(2, 7, DISPLAY_BOOT_TEXT, "Webserver init");
     // Deaktiviere alle Debug-Ausgaben
     Serial.setDebugOutput(false);
     
diff --git a/src/website.h b/src/website.h
index ad4a16e..b69f819 100644
--- a/src/website.h
+++ b/src/website.h
@@ -24,7 +24,7 @@ void setupWebserver(AsyncWebServer &server);
 
 // WebSocket-Funktionen
 void sendAmsData(AsyncWebSocketClient *client);
-void sendNfcData(AsyncWebSocketClient *client);
+void sendNfcData();
 void foundNfcTag(AsyncWebSocketClient *client, uint8_t success);
 void sendWriteResult(AsyncWebSocketClient *client, uint8_t success);
 
diff --git a/src/wlan.cpp b/src/wlan.cpp
index cbbba38..92081bc 100644
--- a/src/wlan.cpp
+++ b/src/wlan.cpp
@@ -61,8 +61,7 @@ void initWiFi() {
   wm.setWiFiAutoReconnect(true);
   wm.setConnectTimeout(10);
 
-  oledShowTopRow();
-  oledShowMessage("WiFi Setup");
+  oledShowProgressBar(1, 7, DISPLAY_BOOT_TEXT, "WiFi init");
   
   //bool res = wm.autoConnect("FilaMan"); // anonymous ap
   if(!wm.autoConnect("FilaMan")) {
@@ -80,9 +79,6 @@ void initWiFi() {
     Serial.println(WiFi.localIP());
 
     oledShowTopRow();
-    display.display();
-
-    vTaskDelay(500 / portTICK_PERIOD_MS);
 
     // mDNS
     startMDNS();