diff --git a/platformio.ini b/platformio.ini
index 90fc4c6..04417bb 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -21,7 +21,7 @@ monitor_speed = 115200
 [env:lilygo-t-amoled]
 board = lilygo-t-amoled
 build_flags = 
-	-D CORE_DEBUG_LEVEL=5
+	-D CORE_DEBUG_LEVEL=4
 	-D ESP32S3
 	-D LILYGOTAMOLED
 	-D BOARD_HAS_PSRAM
@@ -33,3 +33,4 @@ lib_deps =
     me-no-dev/AsyncTCP @ ^1.1.1
 	lovyan03/LovyanGFX @ ^1.1.8
 	lvgl/lvgl @ ^8.3.9
+	rpolitex/ArduinoNvs @ ^2.5.0
diff --git a/src/gfx/rm67162.h b/src/gfx/rm67162.h
index 007eef9..b5e32ff 100644
--- a/src/gfx/rm67162.h
+++ b/src/gfx/rm67162.h
@@ -19,7 +19,7 @@
 #pragma once
 
 #include "stdint.h"
-#include "pins_config.h"
+#include "pins.h"
 
 #define TFT_MADCTL 0x36
 #define TFT_MAD_MY 0x80
diff --git a/src/main.cpp b/src/main.cpp
index d819164..6277b99 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -16,13 +16,22 @@
 // along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //
 //----------------------------------------------------------------------------
-#include <Arduino.h>
+#include "main.h"
 
+#include <Arduino.h>
 #ifdef LILYGOTAMOLED
 #include "gfx/lv_setup.h"
 #include <lvgl.h>
 #endif
 
+#include <ArduinoNvs.h>
+#include <services/ble/discovery_service.h>
+
+void loadSettings()
+{
+  /// @todo load settings from NVS
+}
+
 void setup()
 {
 #ifdef LILYGOTAMOLED
@@ -43,6 +52,11 @@ void setup()
   lv_label_set_text(label2, "It is a circularly scrolling text. ");
   lv_obj_align(label2, LV_ALIGN_CENTER, 0, 40);
 #endif
+
+  NVS.begin();
+  loadSettings();
+
+  BLE::startAdvertising();
 }
 
 void loop()
diff --git a/src/main.h b/src/main.h
new file mode 100644
index 0000000..6f70f09
--- /dev/null
+++ b/src/main.h
@@ -0,0 +1 @@
+#pragma once
diff --git a/src/pins_config.h b/src/pins.h
similarity index 100%
rename from src/pins_config.h
rename to src/pins.h
diff --git a/src/services/ble/battery_service.cpp b/src/services/ble/battery_service.cpp
new file mode 100644
index 0000000..0c4b1a0
--- /dev/null
+++ b/src/services/ble/battery_service.cpp
@@ -0,0 +1,34 @@
+//----------------------------------------------------------------------------
+// OS-Railway - Intercity Express Train
+// Copyright (C) 2023 Peter Siegmund (https://mars3142.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+//----------------------------------------------------------------------------
+#include "battery_service.h"
+
+namespace BLE
+{
+    BLEService *createBatteryService(BLEServer *pServer)
+    {
+        auto *pService = pServer->createService(BLEUUID((uint16_t)0x180F));
+        auto *pBatteryLevel = pService->createCharacteristic(BLEUUID((uint16_t)0x2A19), BLECharacteristic::PROPERTY_READ | BLECharacteristic::PROPERTY_NOTIFY);
+        /// TODO: Add battery level
+        auto value = esp_random() % 100;
+        pBatteryLevel->setValue(value);
+
+        pService->start();
+        return pService;
+    }
+} // namespace BLE
diff --git a/src/services/ble/battery_service.h b/src/services/ble/battery_service.h
new file mode 100644
index 0000000..83dadf0
--- /dev/null
+++ b/src/services/ble/battery_service.h
@@ -0,0 +1,26 @@
+//----------------------------------------------------------------------------
+// OS-Railway - Intercity Express Train
+// Copyright (C) 2023 Peter Siegmund (https://mars3142.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+//----------------------------------------------------------------------------
+#pragma once
+
+#include <BLEServer.h>
+
+namespace BLE
+{
+    BLEService *createBatteryService(BLEServer *pServer);
+} // namespace BLE
diff --git a/src/services/ble/discovery_service.cpp b/src/services/ble/discovery_service.cpp
new file mode 100644
index 0000000..b7d93af
--- /dev/null
+++ b/src/services/ble/discovery_service.cpp
@@ -0,0 +1,56 @@
+//----------------------------------------------------------------------------
+// OS-Railway - Intercity Express Train
+// Copyright (C) 2023 Peter Siegmund (https://mars3142.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+//----------------------------------------------------------------------------
+#include "discovery_service.h"
+
+#include <BLEDevice.h>
+#include <BLEServer.h>
+#include <BLEUtils.h>
+#include <string>
+#include <WiFi.h>
+#include <BLE2902.h>
+
+#include "battery_service.h"
+#include "osrw_service.h"
+#include "server_callback.h"
+
+namespace BLE
+{
+    void startAdvertising()
+    {
+        uint8_t mac[6];
+        auto pMac = WiFi.macAddress(mac);
+        char *name = new char[18];
+        sprintf(name, "OSRW-%02X%02X%02X%02X%02X%02X", mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
+        BLEDevice::init(name);
+
+        auto *pServer = BLEDevice::createServer();
+        pServer->setCallbacks(new ServerCallbacks());
+
+        auto *pService = createOSRWService(pServer);
+        auto *pBatteryService = createBatteryService(pServer);
+
+        auto *pAdvertising = BLEDevice::getAdvertising();
+        pAdvertising->addServiceUUID(pService->getUUID());
+        pAdvertising->addServiceUUID(pBatteryService->getUUID());
+        pAdvertising->setScanResponse(true);
+        pAdvertising->setMinPreferred(0x06); // functions that help with iPhone connections issue
+        pAdvertising->setMinPreferred(0x12);
+        BLEDevice::startAdvertising();
+    }
+} // namespace BLE
diff --git a/src/services/ble/discovery_service.h b/src/services/ble/discovery_service.h
new file mode 100644
index 0000000..8f09723
--- /dev/null
+++ b/src/services/ble/discovery_service.h
@@ -0,0 +1,24 @@
+//----------------------------------------------------------------------------
+// OS-Railway - Intercity Express Train
+// Copyright (C) 2023 Peter Siegmund (https://mars3142.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+//----------------------------------------------------------------------------
+#pragma once
+
+namespace BLE
+{
+    void startAdvertising();
+} // namespace BLE
diff --git a/src/services/ble/osrw_service.cpp b/src/services/ble/osrw_service.cpp
new file mode 100644
index 0000000..b0c8d31
--- /dev/null
+++ b/src/services/ble/osrw_service.cpp
@@ -0,0 +1,42 @@
+//----------------------------------------------------------------------------
+// OS-Railway - Intercity Express Train
+// Copyright (C) 2023 Peter Siegmund (https://mars3142.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+//----------------------------------------------------------------------------
+#include "osrw_service.h"
+
+#include <BLE2902.h>
+
+#define OSRW_SERVICE_UUID "B7C28FEE-ABD3-4841-ABC8-A686B68C82E2"
+#define NAME_CHARACTERISTIC_UUID "5A3973F9-79B5-4D24-A76C-BBA81986A26B"
+// 5A3973F9-79B5-4D24-A76C-BBA81986A26B
+// 7D616E83-645F-4D2B-B9D5-1151F3CE4133
+// 51B849E4-C15E-4E13-8D42-9A642862DBF4
+// C2690528-B2D2-4E3E-861C-B371D4852FE4
+
+namespace BLE
+{
+    BLEService *createOSRWService(BLEServer *pServer)
+    {
+        auto *pService = pServer->createService(OSRW_SERVICE_UUID);
+        auto *pName = pService->createCharacteristic(NAME_CHARACTERISTIC_UUID, BLECharacteristic::PROPERTY_READ);
+        pName->setValue("ICE 3");
+
+        pService->start();
+        return pService;
+    }
+
+} // namespace BLE
diff --git a/src/services/ble/osrw_service.h b/src/services/ble/osrw_service.h
new file mode 100644
index 0000000..3532bbe
--- /dev/null
+++ b/src/services/ble/osrw_service.h
@@ -0,0 +1,26 @@
+//----------------------------------------------------------------------------
+// OS-Railway - Intercity Express Train
+// Copyright (C) 2023 Peter Siegmund (https://mars3142.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+//----------------------------------------------------------------------------
+#pragma once
+
+#include <BLEServer.h>
+
+namespace BLE
+{
+    BLEService *createOSRWService(BLEServer *pServer);
+} // namespace BLE
diff --git a/src/services/ble/server_callback.cpp b/src/services/ble/server_callback.cpp
new file mode 100644
index 0000000..c7442f2
--- /dev/null
+++ b/src/services/ble/server_callback.cpp
@@ -0,0 +1,38 @@
+//----------------------------------------------------------------------------
+// OS-Railway - Intercity Express Train
+// Copyright (C) 2023 Peter Siegmund (https://mars3142.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+//----------------------------------------------------------------------------
+#include "server_callback.h"
+
+#include <esp_log.h>
+
+namespace BLE
+{
+    void ServerCallbacks::onConnect(BLEServer *pServer, esp_ble_gatts_cb_param_t *param)
+    {
+        ESP_LOGD("ble", "BLE client connected");
+    }
+    void ServerCallbacks::onDisconnect(BLEServer *pServer, esp_ble_gatts_cb_param_t *param)
+    {
+        ESP_LOGD("ble", "BLE client disconnected");
+    }
+
+    void ServerCallbacks::onMtuChanged(BLEServer *pServer, esp_ble_gatts_cb_param_t *param)
+    {
+        ESP_LOGD("ble", "BLE client MTU changed");
+    }
+} // namespace BLE
diff --git a/src/services/ble/server_callback.h b/src/services/ble/server_callback.h
new file mode 100644
index 0000000..4f25954
--- /dev/null
+++ b/src/services/ble/server_callback.h
@@ -0,0 +1,31 @@
+//----------------------------------------------------------------------------
+// OS-Railway - Intercity Express Train
+// Copyright (C) 2023 Peter Siegmund (https://mars3142.dev)
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Affero General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Affero General Public License for more details.
+//
+// You should have received a copy of the GNU Affero General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+//
+//----------------------------------------------------------------------------
+#pragma once
+
+#include <BLEServer.h>
+
+namespace BLE
+{
+    class ServerCallbacks : public BLEServerCallbacks
+    {
+        void onConnect(BLEServer *pServer, esp_ble_gatts_cb_param_t *param) override;
+        void onDisconnect(BLEServer *pServer, esp_ble_gatts_cb_param_t *param) override;
+        void onMtuChanged(BLEServer *pServer, esp_ble_gatts_cb_param_t *param) override;
+    };
+} // namespace BLE