diff --git a/Makefile b/Makefile
index e5f8394..4cbf1bf 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ BUILD_DIR := $(OUT_DIR)/$(BUILD_TYPE)
 SRCS := $(shell find $(SRC_DIR) -type f -name '*.cpp')
 OBJS=$(patsubst $(SRC_DIR)/%.cpp,$(BUILD_DIR)/%.o,$(SRCS))
 
-RES := $(shell find $(RES_DIR) -type f ! -name '*.h' -name '*.*')
+RES := $(shell find $(RES_DIR) -type f ! -name '*.h' ! -name '.*' -name '*.*')
 RES_SRC := $(patsubst $(RES_DIR)/%,$(GEN_DIR)/%.cpp,$(RES))
 
 # Targets
diff --git a/settings.txt b/settings.txt
index 0626488..1670341 100644
--- a/settings.txt
+++ b/settings.txt
@@ -1,28 +1,73 @@
-# Dongle configuration
+##############################################################################
+# 1.General settings
+##############################################################################
+
+# Dongle configuration (use lsusb to find yours)
 # Note that vendor id and product id are in decimals, not hex here
 #vendor-id = 4884 # 0x1314
 #product-id = 5408 # 0x1520
 
-# Application starts in full screen
-#fullscreen = true
-
-
-# Application drawing settings widthxheight
-#width = 720
-#height = 576
-#fps = 50 
-
-# Enable vsync. This reduce tearing but can dramatically affect performance on low end systems 
-#vsync = false
-
-# Target DPI reported to device. Set 0 for default
-#dpi = 0
-
 # Requested image from phone 
 #source-width = 720
 #source-height = 576
 #source-fps = 50    
 
+# Application drawing settings widthxheight
+#width = 720
+#height = 576
+
+# Application drawing target framerate. This can responsiveness.
+# If the setting is lower than source-fps the framse will be dropped
+# If the setting is not multiple of source-fps can still cause frame drops cause out-of-sync 
+# source images and drawing times
+#fps = 50 
+
+# Application starts in full screen
+#fullscreen = true
+
+# Enable generic console logging. Can reduce performace
+#logging = false 
+
+##############################################################################
+# 2.Device configurations
+##############################################################################
+
+# USB communication protocol encryption
+# From 2024 Carlinkit has an optinal USB protocol encryption
+# It can happened that it will become mandatory and device will not work withou it
+# So if you have updated your device and it stop working try to enable encryption
+#encryption = false
+
+# Enable automatic connection to wireless devices
+#autoconnect = true
+
+# Eanble weak charging current (standart usb 0.5A).
+# If you have a powerfull poswer supply you can try to disable this.
+# If you have troubles with wired connection try to enable this, cause it might be cause of power lack.
+#weak-charge = true
+
+# Driving position, true for left hand drive, false for right hand drive
+#left-hand-drive = true
+
+# Nigh mode. 0 for day mode, 1 for night mode, 2 for automatic
+#night-mode = 2
+
+# Target DPI reported to device. Set 0 for default. Not sure if it affects anything
+#dpi = 0
+
+##############################################################################
+# 3.Application configuration
+##############################################################################
+
+# Font size for messgaes on screen. Set to 0 is you do not want any
+#font-size = 30
+
+# Enable vsync. This reduce tearing but can dramatically affect performance on low end systems 
+#vsync = false
+
+# Corrects aspect of UI
+#aspect-correction = 1
+
 # Scaler algorithm if application drawing is differen from source image
 # It's recommended to keep application and source values same cause scaling
 # takes a lot of CPU and can cause artifacts on slow devices
@@ -45,9 +90,6 @@
 # Select faster method of scaling image to window size (nearest) or better quality (linear)
 #fast-render-scale = false
 
-# Enable logging
-#logging = false 
-
 # Size of video and audio buffers. Increase if you see artifacts
 #video-buffer-size = 32
 #audio-buffer-size = 16
@@ -61,18 +103,6 @@
 # Reduction level from 1 (no reduction) to 0 (fully silenced)
 #audio-fade = 0.3
 
-# Font size for messgaes on screen. Set to 0 is you do not want any
-#font-size = 30
-
-# USB communication protocol encryption
-# From 2024 Carlinkit has an optinal USB protocol encryption
-# It can happened that it will become mandatory and device will not work withou it
-# So if you have updated your device and it stop working try to enable encryption
-#encryption = false
-
-# Enable automatic connection to wireless devices
-#autoconnect = true
-
 # Run script or app on phone connected and disconnected. 
 # This script/app should be fast, otherwise it will block system. 
 # If you need to start application in background use scripts with fork 
@@ -90,10 +120,15 @@
 #on-connect-script = 
 #on-disconnect-script = 
 
-# Protocol debug level. Works on debug builds only with PROTOCOL_DEBUG flag set.
+##############################################################################
+# 4.Debug
+##############################################################################
+
+# Protocol debug level. Works only on builds only with PROTOCOL_DEBUG flag set.
+# Add -DPROTOCOL_DEBUG to CXXCOMMON to enable protocol debugging and rebuild.
 # 0 - nothing
 # 1 - unknown commands
 # 2 - all commands except data streams
 # 3 - include outgoing commands
 # 4 - log everything
-#protocol-debug = 0 
\ No newline at end of file
+# protocol-debug = 0
\ No newline at end of file
diff --git a/src/connector.cpp b/src/connector.cpp
index 4baa275..d92874e 100644
--- a/src/connector.cpp
+++ b/src/connector.cpp
@@ -21,6 +21,7 @@ Connector::Connector(uint16_t videoPadding)
         _cipher = nullptr;
     }
 
+    _state = PROTOCOL_STATUS_INITIALISING;
     int result = libusb_init(&_context);
     if (result < 0)
         throw std::runtime_error(std::string("Can't initialise USB: ") + libusb_error_name(result));
@@ -67,8 +68,8 @@ void Connector::stop()
         return;
 
     _active = false;
-    if (_read_thread.joinable())
-        _read_thread.join();
+
+    state(PROTOCOL_STATUS_INITIALISING);
 
     if (_write_thread.joinable())
         _write_thread.join();
@@ -76,13 +77,11 @@ void Connector::stop()
 
 bool Connector::connect(uint16_t vendor_id, uint16_t product_id)
 {
-    status("Searching for dongle");
-
     _device = libusb_open_device_with_vid_pid(_context, vendor_id, product_id);
     if (!_device)
     {
         std::cout << "[Connection] Failed to create device handle - no device" << std::endl;
-        status("Can't find dongle");
+        state(PROTOCOL_STATUS_NO_DEVICE);
         return false;
     }
 
@@ -97,50 +96,29 @@ bool Connector::connect(uint16_t vendor_id, uint16_t product_id)
 
 bool Connector::link()
 {
-    int usbres = 0;
-    status("Linking dongle");
+    state(PROTOCOL_STATUS_LINKING);
 
-    usbres = libusb_reset_device(_device);
-    if (usbres < 0)
-    {
-        std::cout << "[Connection] Can't reset device: " << libusb_error_name(usbres) << std::endl;
+    if (linkFail(libusb_reset_device(_device), " Can't reset device"))
         return false;
-    }
 
-    usbres = libusb_set_configuration(_device, 1);
-    if (usbres < 0)
-    {
-        std::cout << "[Connection] Can't set configuration: " << libusb_error_name(usbres) << std::endl;
+    if (linkFail(libusb_set_configuration(_device, 1), "Can't set configuration"))
         return false;
-    }
 
-    usbres = libusb_claim_interface(_device, 0);
-    if (usbres < 0)
-    {
-        std::cout << "[Connection] Can't claim interface: " << libusb_error_name(usbres) << std::endl;
+    if (linkFail(libusb_claim_interface(_device, 0), "Can't claim interface"))
         return false;
-    }
 
     libusb_device *dev = libusb_get_device(_device);
     struct libusb_config_descriptor *config = nullptr;
-    usbres = libusb_get_active_config_descriptor(dev, &config);
-    if (usbres < 0)
-    {
-        std::cout << "[Connection] Can't get config: " << libusb_error_name(usbres) << std::endl;
+    if (linkFail(libusb_get_active_config_descriptor(dev, &config), "Can't get config"))
         return false;
-    }
 
     for (int i = 0; i < config->interface[0].altsetting[0].bNumEndpoints; i++)
     {
         const struct libusb_endpoint_descriptor *ep = &config->interface[0].altsetting[0].endpoint[i];
         if ((ep->bEndpointAddress & LIBUSB_ENDPOINT_DIR_MASK) == LIBUSB_ENDPOINT_IN)
-        {
             _endpoint_in = ep->bEndpointAddress;
-        }
         else
-        {
             _endpoint_out = ep->bEndpointAddress;
-        }
     }
 
     libusb_free_config_descriptor(config);
@@ -157,10 +135,57 @@ void Connector::release()
     }
 }
 
-void Connector::status(const char *status)
+bool Connector::nextState(u_int8_t state)
 {
-    if (_protocol)
-        _protocol->onStatus(status);
+    if (state == _state)
+        return false;
+
+    if (state > _state)
+    {
+        _nodeviceCount = 0;
+        _failCount = 0;
+        _state = state;
+        return true;
+    }
+
+    switch (state)
+    {
+    case PROTOCOL_STATUS_INITIALISING:
+        break;
+
+    case PROTOCOL_STATUS_ERROR:
+        _nodeviceCount = 0;
+        if (_failCount++ < 10)
+            return false;
+        break;
+
+    case PROTOCOL_STATUS_NO_DEVICE:
+        if (_nodeviceCount++ < 10 && _state < PROTOCOL_STATUS_ONLINE)
+            return false;
+        break;
+
+    default:
+        return false;
+    }
+
+    _state = state;
+    return true;
+}
+
+void Connector::state(u_int8_t state)
+{
+    if (nextState(state) && _protocol)
+        _protocol->onStatus(state);
+}
+
+bool Connector::linkFail(int status, const char *msg)
+{
+    if (status == 0)
+        return false;
+    _lastError = msg;
+    std::cout << "[Connection] " << msg << ": " << libusb_error_name(status) << std::endl;
+    state(PROTOCOL_STATUS_ERROR);
+    return true;
 }
 
 int Connector::send(int cmd, bool encrypt, uint8_t *data, uint32_t size)
@@ -213,7 +238,7 @@ void Connector::setEncryption(bool enabled)
     _ecnrypt = true;
 }
 
-void Connector::printInts(uint32_t length, uint8_t *data, uint16_t max)
+void Connector::printInts(uint8_t *data, uint32_t length, uint16_t max)
 {
     if (data && length >= 4)
     {
@@ -232,7 +257,7 @@ void Connector::printInts(uint32_t length, uint8_t *data, uint16_t max)
     }
 }
 
-void Connector::printBytes(uint32_t length, uint8_t *data, uint16_t max)
+void Connector::printBytes(uint8_t *data, uint32_t length, uint16_t max)
 {
     if (data && length >= 4)
     {
@@ -311,8 +336,6 @@ void Connector::read_loop()
         if (result == LIBUSB_ERROR_NO_DEVICE)
         {
             std::cout << "[Connection] Device disconnected" << std::endl;
-            if (_protocol)
-                _protocol->onDevice(false);
             _connected = false;
             continue;
         }
@@ -357,9 +380,6 @@ void Connector::read_loop()
 
 #ifdef PROTOCOL_DEBUG
         printMessage(header.type, header.length, data, header.magic == MAGIC_ENC, false);
-
-        if (header.type == 7 && header.length < 100)
-            printBytes(header.length, data, 30);
 #endif
 
         if (padding > 0)
@@ -375,20 +395,20 @@ void Connector::write_loop()
 
     // Set thread name
     setThreadName("protocol-writer");
+    state(PROTOCOL_STATUS_LINKING);    
 
     while (_active)
     {
         _connected = connect(Settings::vendorid, Settings::productid);
         if (_connected)
         {
-            status("Initialising dongle");
             std::cout << "[Connection] Device connected" << std::endl;
 
             _read_thread = std::thread(&Connector::read_loop, this);
             if (_protocol)
                 _protocol->onDevice(true);
 
-            status("Waiting for connecton");
+            state(PROTOCOL_STATUS_ONLINE);
             while (_connected && _active)
             {
                 send(170);
@@ -397,7 +417,14 @@ void Connector::write_loop()
                             { return !_active.load(); });
             }
 
-            if(_read_thread.joinable())
+            if (_active)
+            {
+                state(PROTOCOL_STATUS_NO_DEVICE);
+                if (_protocol)
+                    _protocol->onDevice(false);
+            }
+
+            if (_read_thread.joinable())
                 _read_thread.join();
         }
         std::unique_lock<std::mutex> lock(mtx);
diff --git a/src/connector.h b/src/connector.h
index 159b128..4cf1aca 100644
--- a/src/connector.h
+++ b/src/connector.h
@@ -11,7 +11,7 @@
 #include "helper/iprotocol.h"
 #include "aes_cipher.h"
 
-#define READ_TIMEOUT 5000
+#define READ_TIMEOUT 3000
 #define ENCRYPTION_BASE "SkBRDy3gmrw1ieH0"
 
 #define PROTOCOL_DEBUG_NONE 0
@@ -45,6 +45,11 @@ public:
 
     AESCipher *Cypher() const { return _cipher; };
 
+    static void printMessage(uint32_t cmd, uint32_t length, uint8_t *data, bool encrypted, bool out);
+    static void printInts(uint8_t *data, uint32_t length, uint16_t max);
+    static void printBytes(uint8_t *data, uint32_t length, uint16_t max);
+    static const char *cmdString(int cmd);
+
 private:
     void read_loop();
     void write_loop();
@@ -53,12 +58,9 @@ private:
     bool link();
     void release();
 
-    void status(const char *status);
-
-    static void printInts(uint32_t length, uint8_t *data, uint16_t max);
-    static void printBytes(uint32_t length, uint8_t *data, uint16_t max);
-    static const char *cmdString(int cmd);
-    static void printMessage(uint32_t cmd, uint32_t length, uint8_t *data, bool encrypted, bool out);
+    void state(u_int8_t state);
+    bool nextState(u_int8_t state);
+    bool linkFail(int status, const char *msg);
 
     libusb_context *_context = nullptr;
     libusb_device_handle *_device = nullptr;
@@ -67,6 +69,11 @@ private:
     bool _connected;
     std::atomic<bool> _ecnrypt = false;
 
+    uint8_t _state;
+    uint8_t _failCount;
+    uint8_t _nodeviceCount;
+    std::string _lastError;
+
     std::thread _read_thread;
     std::thread _write_thread;
     std::mutex _write_mutex;
diff --git a/src/decoder.cpp b/src/decoder.cpp
index 6454007..49d6694 100644
--- a/src/decoder.cpp
+++ b/src/decoder.cpp
@@ -63,7 +63,7 @@ AVCodecContext *Decoder::load_codec(AVCodecID codec_id)
             return result;
         }
 
-        std::cout << "[Video] Can't load HW codec " << codec->name << ": " << Error::avErrorText(ret) << std::endl;
+        std::cout << "[Video] Can't load HW codec " << codec->name << ": " << avErrorText(ret) << std::endl;
         avcodec_free_context(&result);
     }
 
@@ -85,7 +85,7 @@ AVCodecContext *Decoder::load_codec(AVCodecID codec_id)
     int ret = avcodec_open2(result, codec, nullptr);
     if (ret < 0)
     {
-        std::cout << "[Video] Failed to open software decoder " << codec->name << ": " << Error::avErrorText(ret) << std::endl;
+        std::cout << "[Video] Failed to open software decoder " << codec->name << ": " << avErrorText(ret) << std::endl;
         avcodec_free_context(&result);
         return nullptr;
     }
@@ -177,7 +177,7 @@ void Decoder::loop(AVCodecContext *context, AVCodecParserContext *parser, AVPack
             int send_ret = avcodec_send_packet(context, packet);
             if (send_ret != 0)
             {
-                std::cout << "[Video] Can't decode packet: " << Error::avErrorText(send_ret) << std::endl;
+                std::cout << "[Video] Can't decode packet: " << avErrorText(send_ret) << std::endl;
                 continue;
             }
 
diff --git a/src/helper/error.h b/src/helper/error.h
index 879e42b..7882ac3 100644
--- a/src/helper/error.h
+++ b/src/helper/error.h
@@ -3,6 +3,7 @@
 
 #include <string>
 #include <stdexcept>
+#include "helper/functions.h"
 
 extern "C"
 {
@@ -47,14 +48,6 @@ public:
         return false;
     }
 
-    static const std::string avErrorText(int code)
-    {
-        char buf[AV_ERROR_MAX_STRING_SIZE] = {0};
-        if (av_strerror(code, buf, sizeof(buf)) == 0)
-            return buf;
-        return "Unknown error";
-    }
-
     bool avFail(int code, const std::string &message = "")
     {
         if (code == 0)
diff --git a/src/helper/functions.h b/src/helper/functions.h
index df017cc..abaf5b9 100644
--- a/src/helper/functions.h
+++ b/src/helper/functions.h
@@ -1,10 +1,18 @@
 #ifndef SRC_HELPER_FUNCTIONS
 #define SRC_HELPER_FUNCTIONS
 
+#include <iostream>
+#include <SDL2/SDL.h>
+
 #if defined(__linux__) || defined(__APPLE__)
 #include <pthread.h>
 #endif
 
+extern "C"
+{
+#include <libavutil/error.h>
+}
+
 inline void setThreadName(const char *name)
 {
 #if defined(__linux__)
@@ -29,12 +37,34 @@ inline void write_uint32_le(uint8_t *dst, uint32_t value)
     dst[3] = (value >> 24) & 0xFF;
 }
 
-inline void execute(const char* path) {
-    if (!path || *path == '\0') {
+inline void execute(const char *path)
+{
+    if (!path || *path == '\0')
+    {
         throw std::invalid_argument("Program path cannot be empty");
     }
 
     std::system(path);
 }
 
+inline const std::string avErrorText(int code)
+{
+    char buf[AV_ERROR_MAX_STRING_SIZE] = {0};
+    if (av_strerror(code, buf, sizeof(buf)) == 0)
+        return buf;
+    return "Unknown error";
+}
+
+inline void pushEvent(Uint32 evt, int code)
+{
+    if (evt == (Uint32)-1)
+        return;
+    SDL_Event event;
+    SDL_memset(&event, 0, sizeof(event));
+    event.type = evt;
+    event.user.type = evt;
+    event.user.code = code;
+    SDL_PushEvent(&event);
+}
+
 #endif /* SRC_HELPER_FUNCTIONS */
diff --git a/src/helper/iprotocol.h b/src/helper/iprotocol.h
index 0535772..92d00de 100644
--- a/src/helper/iprotocol.h
+++ b/src/helper/iprotocol.h
@@ -4,13 +4,11 @@
 #include <cstdint>
 #include <functional>
 
-using StatusCallback = void (*)(const char* status);
-
 class IProtocol
 {
 public:
-    virtual void onData(uint32_t cmd, uint32_t length, uint8_t* data) = 0;
-    virtual void onStatus(const char* status) = 0;
+    virtual void onData(uint32_t cmd, uint32_t length, uint8_t *data) = 0;
+    virtual void onStatus(u_int8_t status) = 0;
     virtual void onDevice(bool connected) = 0;
 };
 #endif /* SRC_HELPER_IPROTOCOL */
diff --git a/src/helper/protocol_const.h b/src/helper/protocol_const.h
index 97c2e85..23b3481 100644
--- a/src/helper/protocol_const.h
+++ b/src/helper/protocol_const.h
@@ -1,6 +1,13 @@
 #ifndef SRC_HELPER_PROTOCOL_CONST
 #define SRC_HELPER_PROTOCOL_CONST
 
+#define PROTOCOL_STATUS_INITIALISING 0 // Initialised > 1
+#define PROTOCOL_STATUS_NO_DEVICE 1    // Start linking > 3
+#define PROTOCOL_STATUS_ERROR 2        // Linked > 4, no device in sequence > 1
+#define PROTOCOL_STATUS_LINKING 3      // Linked > 4, Failed in sequence > 2
+#define PROTOCOL_STATUS_ONLINE 4       // Phone connected > 5, no device > 1
+#define PROTOCOL_STATUS_CONNECTED 5    // Phone disconnected > 4, no device > 1
+
 #define MAGIC 0x55aa55aa
 #define MAGIC_ENC 0x55bb55bb
 
diff --git a/src/helper/ufont.h b/src/helper/ufont.h
deleted file mode 100644
index 9a92f9c..0000000
--- a/src/helper/ufont.h
+++ /dev/null
@@ -1,65 +0,0 @@
-#ifndef SRC_HELPER_UFONT
-#define SRC_HELPER_UFONT
-
-#include <SDL2/SDL_ttf.h>
-#include <iostream>
-
-class UFont
-{
-public:
-    UFont(const void *font_data, int data_size, int ptsize)
-    {
-        if(ptsize < 1)
-            return;
-
-        SDL_RWops *font_rw = SDL_RWFromConstMem(font_data, data_size);
-        if (!font_rw)
-        {
-            std::cerr << "[UX] SDL can't open font: " << SDL_GetError() << std::endl;
-            return;
-        }
-
-        _font = TTF_OpenFontRW(font_rw, 1, ptsize);
-        if (!_font)
-        {
-            std::cerr << "[UX] SDL can't load font: " << TTF_GetError() << std::endl;
-        }
-    };
-
-    ~UFont()
-    {
-        if (_font)
-        {
-            TTF_CloseFont(_font);
-            _font = nullptr;
-        }
-    };
-
-    SDL_Texture *GetText(SDL_Renderer *renderer, const char *text, SDL_Color color)
-    {
-        if (!_font)
-            return nullptr;
-
-        SDL_Surface *textSurface = TTF_RenderText_Blended(_font, text, color);
-        if (!textSurface)
-        {
-            std::cerr << "[UX] Failed to create text surface: " << TTF_GetError() << std::endl;
-            return nullptr;
-        }
-
-        SDL_Texture *textTexture = SDL_CreateTextureFromSurface(renderer, textSurface);
-        SDL_FreeSurface(textSurface);
-        if (!textTexture)
-        {
-            std::cerr << "[UX] Failed to create text texture: " << TTF_GetError() << std::endl;
-            return nullptr;
-        }
-
-        return textTexture;
-    }
-
-private:
-    TTF_Font *_font = nullptr;
-};
-
-#endif /* SRC_HELPER_UFONT */
diff --git a/src/helper/uimage.h b/src/helper/uimage.h
deleted file mode 100644
index 975c357..0000000
--- a/src/helper/uimage.h
+++ /dev/null
@@ -1,52 +0,0 @@
-#ifndef SRC_HELPER_UIMAGE
-#define SRC_HELPER_UIMAGE
-
-#include <SDL2/SDL.h>
-#include <iostream>
-
-class UImage
-{
-public:
-    UImage(const void *img_data, int img_size)
-    {
-        SDL_RWops *img_rw = SDL_RWFromConstMem(img_data, img_size);
-        if (!img_rw)
-        {
-            std::cerr << "[UX] SDL can't open image: " << SDL_GetError() << std::endl;
-            return;
-        }
-
-        _surface = SDL_LoadBMP_RW(img_rw, 1);
-        if (!_surface)
-        {
-            std::cerr << "[UX] Failed to create image surface: " << SDL_GetError() << std::endl;
-            return;
-        }
-
-        Width = _surface->w;
-        Height = _surface->h;
-    };
-
-    ~UImage()
-    {
-        if (_surface)
-        {
-            SDL_FreeSurface(_surface);
-            _surface = nullptr;
-        }
-    };
-
-    SDL_Texture *GetImage(SDL_Renderer *renderer)
-    {
-        return SDL_CreateTextureFromSurface(renderer, _surface);
-    }
-
-    int Width = 0;
-
-    int Height = 0;
-
-private:
-    SDL_Surface *_surface = nullptr;
-};
-
-#endif /* SRC_HELPER_UIMAGE */
diff --git a/src/interface.cpp b/src/interface.cpp
new file mode 100644
index 0000000..6deef72
--- /dev/null
+++ b/src/interface.cpp
@@ -0,0 +1,51 @@
+#include "interface.h"
+#include "resource/background.h"
+#include "resource/font.h"
+#include "resource/colors.h"
+#include "settings.h"
+#include "helper/protocol_const.h"
+#include <iostream>
+
+Interface::Interface(SDL_Renderer *renderer)
+    : Renderer(renderer), _state(0),
+      _textDongle(font, font_len, Settings::fontSize),
+      _textInit(font, font_len, Settings::fontSize),
+      _textConnect(font, font_len, Settings::fontSize),
+      _textLaunch(font, font_len, Settings::fontSize),
+      _mainImage(background, background_len)
+{
+}
+
+Interface::~Interface()
+{
+}
+
+bool Interface::drawHome(bool force, int state)
+{
+    if (state == _state && !force)
+        return false;
+
+    _state = state;
+    int width, height;
+    SDL_GetRendererOutputSize(_renderer, &width, &height);
+    SDL_RenderClear(_renderer);
+
+    _mainImage.draw(_renderer, width, height);
+    if (state == PROTOCOL_STATUS_ERROR)
+    {
+        if (_textDongle.prepare(_renderer, "Connection error", colorError))
+            _textDongle.draw(_renderer, 0.05 * width, 0.2 * height - _textDongle.height / 2);
+    }
+    if (_textDongle.prepare(_renderer, "Insert dongle", state == PROTOCOL_STATUS_NO_DEVICE ? color1 : color1_inactive))
+        _textDongle.draw(_renderer, 0.05 * width, 0.2 * height - _textDongle.height / 2);
+    if (_textInit.prepare(_renderer, "Initialising", state == PROTOCOL_STATUS_LINKING ? color2 : color2_inactive))
+        _textInit.draw(_renderer, 0.05 * width, 0.4 * height - _textInit.height / 2);
+    if (_textConnect.prepare(_renderer, "Connect phone", state == PROTOCOL_STATUS_ONLINE ? color3 : color3_inactive))
+        _textConnect.draw(_renderer, 0.05 * width, 0.6 * height - _textConnect.height / 2);
+    if (_textLaunch.prepare(_renderer, "Launching", state == PROTOCOL_STATUS_CONNECTED? color4 : color4_inactive))
+        _textLaunch.draw(_renderer, 0.05 * width, 0.8 * height - _textLaunch.height / 2);
+
+    SDL_RenderPresent(_renderer);
+    return true;
+}
+
diff --git a/src/interface.h b/src/interface.h
new file mode 100644
index 0000000..2aafc25
--- /dev/null
+++ b/src/interface.h
@@ -0,0 +1,23 @@
+#ifndef SRC_INTERFACE
+#define SRC_INTERFACE
+
+#include "renderer.h"
+#include <string>
+
+class Interface : public Renderer
+{
+public:
+    Interface(SDL_Renderer *renderer);
+    ~Interface();
+    bool drawHome(bool force, int state);
+
+private:
+    int _state;
+    RendererText _textDongle;
+    RendererText _textInit;
+    RendererText _textConnect;
+    RendererText _textLaunch;            
+    RendererImage _mainImage;    
+};
+
+#endif /* SRC_INTERFACE */
diff --git a/src/main.cpp b/src/main.cpp
index 66c55fa..dbcca54 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -12,100 +12,44 @@ extern "C"
 #include <libavutil/imgutils.h>   // FFmpeg utility functions for image handling
 }
 
-#include "resource/background.h"
-#include "resource/font.h"
-
 #include "helper/functions.h"
-#include "helper/ufont.h"
-#include "helper/uimage.h"
-
+#include "helper/protocol_const.h"
 #include "struct/video_buffer.h"
 
 #include "protocol.h"
 #include "decoder.h"
 #include "pcm_audio.h"
-#include "renderer.h"
+#include "interface.h"
 
-static const char *title = "Fast Car Play v0.2";
+#define FRAME_DELAY_INACTIVE 200
+
+static const char *title = "Fast Car Play v0.3";
 static SDL_Window *window = nullptr;
 static SDL_Renderer *renderer = nullptr;
-bool active = false;
+Uint32 evtStatus = (Uint32)-1;
+Uint32 evtConnected = (Uint32)-1;
+bool active = true;
 
-static SDL_Texture *textTexture = nullptr;
-static std::string textureText = "";
-static SDL_Texture *imgTexture = nullptr;
-
-static bool mouseDown = false;
-static bool fullscreen = false;
-
-std::mutex statusMutex;
-std::string statusText;
-
-void onStatus(const char *status)
+struct RunParams
 {
-    std::lock_guard<std::mutex> lock(statusMutex);
-    statusText = status;
-}
+    bool connected;
+    bool videoRendered;
+    bool dirty;
+    bool fullscreen;
+    bool mouseDown;
+    uint8_t deviceStatus;
+    uint32_t frameDelay;
+    int activeDelay;
+};
 
-void DrawText(UFont &font, std::string text)
-{
-    if (!textTexture || textureText.compare(text) != 0)
-    {
-        if (textTexture)
-            SDL_DestroyTexture(textTexture);
-        textTexture = font.GetText(renderer, text.c_str(), {255, 255, 255, 255});
-        textureText = text;
-    }
-
-    if (!textTexture)
-        return;
-
-    int textW, textH;
-    SDL_QueryTexture(textTexture, nullptr, nullptr, &textW, &textH);
-
-    int windowW, windowH;
-    SDL_GetRendererOutputSize(renderer, &windowW, &windowH);
-
-    // Center text
-    SDL_Rect dstRect = {
-        (windowW - textW) / 2,
-        (windowH - textH) * 9 / 10,
-        textW,
-        textH};
-
-    SDL_RenderCopy(renderer, textTexture, nullptr, &dstRect);
-}
-
-void DrawImage(UImage &img)
-{
-    if (!imgTexture)
-        imgTexture = img.GetImage(renderer);
-
-    if (!imgTexture)
-        return;
-
-    int windowW, windowH;
-    SDL_GetRendererOutputSize(renderer, &windowW, &windowH);
-
-    // Compute destination rectangle to center image
-    SDL_Rect dst = {
-        (windowW - img.Width) / 2,  // x: center horizontally
-        (windowH - img.Height) / 2, // y: center vertically
-        img.Width,                  // width: original image width
-        img.Height                  // height: original image height
-    };
-
-    SDL_RenderCopy(renderer, imgTexture, nullptr, &dst);
-}
-
-void processKey(Protocol &protocol, SDL_Keysym key)
+void processKey(Protocol &protocol, SDL_Keysym key, RunParams &params)
 {
     switch (key.sym)
     {
     case SDLK_f:
-        fullscreen = !fullscreen; // Toggle fullscreen mode
-        SDL_SetWindowFullscreen(window, fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
-        SDL_SetWindowBordered(window, fullscreen ? SDL_FALSE : SDL_TRUE);
+        params.fullscreen = !params.fullscreen; // Toggle fullscreen mode
+        SDL_SetWindowFullscreen(window, params.fullscreen ? SDL_WINDOW_FULLSCREEN_DESKTOP : 0);
+        SDL_SetWindowBordered(window, params.fullscreen ? SDL_FALSE : SDL_TRUE);
         break;
 
     case SDLK_q:
@@ -131,7 +75,7 @@ void processKey(Protocol &protocol, SDL_Keysym key)
     }
 }
 
-void processEvents(Protocol &protocol, bool processMouse)
+void processEvents(Protocol &protocol, RunParams &params, VideoBuffer &vb)
 {
     SDL_Event e;
     int motionX = -1;
@@ -140,6 +84,7 @@ void processEvents(Protocol &protocol, bool processMouse)
     int downY = -1;
     int upX = -1;
     int upY = -1;
+
     while (SDL_PollEvent(&e))
     {
         switch (e.type)
@@ -148,9 +93,16 @@ void processEvents(Protocol &protocol, bool processMouse)
             active = false;
             break;
 
+        case SDL_WINDOWEVENT:
+            if (e.window.event == SDL_WINDOWEVENT_RESIZED)
+            {
+                params.dirty = true;
+            }
+            break;
+
         case SDL_MOUSEBUTTONDOWN:
         {
-            mouseDown = true;
+            params.mouseDown = true;
             downX = e.button.x;
             downY = e.button.y;
             break;
@@ -158,14 +110,14 @@ void processEvents(Protocol &protocol, bool processMouse)
 
         case SDL_MOUSEBUTTONUP:
         {
-            mouseDown = false;
+            params.mouseDown = false;
             upX = e.button.x;
             upY = e.button.y;
             break;
         }
         case SDL_MOUSEMOTION:
         {
-            if (!mouseDown)
+            if (!params.mouseDown)
                 break;
             motionX = e.motion.x;
             motionY = e.motion.y;
@@ -173,13 +125,30 @@ void processEvents(Protocol &protocol, bool processMouse)
         }
         case SDL_KEYDOWN:
         {
-            processKey(protocol, e.key.keysym);
+            processKey(protocol, e.key.keysym, params);
             break;
         }
+        default:
+        {
+            if (e.type == evtConnected)
+            {
+                printf("\nEvt connected %d\n", e.user.code);
+                params.connected = e.user.code != 0;
+                params.dirty = true;
+                params.videoRendered = false;
+                params.frameDelay = params.connected ? params.activeDelay : FRAME_DELAY_INACTIVE;
+                if (!params.connected)
+                    vb.reset();
+            }
+            else if (e.type == evtStatus)
+            {
+                params.deviceStatus = e.user.code;
+            }
+        }
         }
     }
 
-    if (processMouse && (downX >= 0 || upX >= 0 || motionX >= 0))
+    if (params.videoRendered && (downX >= 0 || upX >= 0 || motionX >= 0))
     {
         int window_width, window_height;
         SDL_GetWindowSize(window, &window_width, &window_height);
@@ -194,8 +163,17 @@ void processEvents(Protocol &protocol, bool processMouse)
 
 void application()
 {
-    fullscreen = Settings::fullscreen;
-    if (fullscreen)
+    RunParams p;
+    p.activeDelay = 1000 / Settings::fps;
+    p.connected = false;
+    p.deviceStatus = PROTOCOL_STATUS_INITIALISING;
+    p.dirty = false;
+    p.frameDelay = FRAME_DELAY_INACTIVE;
+    p.videoRendered = false;
+    p.fullscreen = Settings::fullscreen;
+    p.mouseDown = false;
+
+    if (p.fullscreen)
     {
         SDL_SetWindowFullscreen(window, SDL_WINDOW_FULLSCREEN);
         SDL_SetWindowBordered(window, SDL_FALSE);
@@ -212,90 +190,46 @@ void application()
     decoder.start(&protocol.videoData, &videoBuffer, AV_CODEC_ID_H264);
     audioMain.start(&protocol.audioStreamMain);
     audioAux.start(&protocol.audioStreamAux, &audioMain);
-    protocol.start(onStatus);
-
-    UFont textFont(font, font_len, Settings::fontSize);
-    std::string status = "Initialising";
-    DrawText(textFont, status);
-    SDL_RenderPresent(renderer);
-
-    UImage image(background, background_len);
-    SDL_RenderClear(renderer);
-    DrawImage(image);
-    DrawText(textFont, status);
-    SDL_RenderPresent(renderer);
+    protocol.start(evtStatus, evtConnected);
+    Interface interface(renderer);
 
     std::cout << "[Main] Loop" << std::endl;
-    Renderer videoRenderer(renderer);
-    bool dirty = true;
-    bool connected = false;
-    bool videoPrepared = false;
-    const int activeDelay = 1000 / Settings::fps;
-    const int inactiveDelay = 1000 / 5; // 5FPS
-    uint32_t frameDelay = inactiveDelay;
-    active = true;
     uint32_t latestid = 0;
     Uint32 frameStart = SDL_GetTicks();
     while (active)
     {
-        processEvents(protocol, videoPrepared);
+        processEvents(protocol, p, videoBuffer);
 
-        if (connected != protocol.phoneConnected)
-        {
-            connected = protocol.phoneConnected;
-            SDL_RenderClear(renderer);
-            DrawImage(image);
-            SDL_RenderPresent(renderer);
-            dirty = true;
-            videoPrepared = false;
-            frameDelay = connected ? activeDelay : inactiveDelay;
-        }
-
-        if (connected)
+        if (p.connected)
         {
             AVFrame *frame = nullptr;
             uint32_t frameid = 0;
-            if (videoBuffer.latest(&frame, &frameid) && frameid != latestid && frame)
+            if (videoBuffer.latest(&frame, &frameid) && (frameid != latestid || p.dirty) && frame)
             {
-                if (!videoPrepared)
-                    videoPrepared = videoRenderer.prepare(frame, Settings::width, Settings::height, Settings::scaler);
-                if (videoPrepared && videoRenderer.render(frame))
+                if (interface.render(frame))
                 {
-                    SDL_RenderClear(renderer);
-                    SDL_RenderCopy(renderer, videoRenderer.texture, nullptr, nullptr);
-                    SDL_RenderPresent(renderer);
+                    p.videoRendered = true;
+                    if (!p.dirty && (frameid != latestid + 1))
+                        std::cout << "[Main] Frame drop " << frameid - latestid - 1 << " on " << frameid << std::endl;
+                    latestid = frameid;
+                    p.dirty = false;
                 }
-                if (frameid != latestid + 1)
-                    std::cout << "[Main] Frame drop " << frameid - latestid - 1 << " on " << frameid << std::endl;
-                latestid = frameid;
                 videoBuffer.consume();
             }
         }
-        else
+
+        if (!p.videoRendered)
         {
-            {
-                std::lock_guard<std::mutex> lock(statusMutex);
-                if (status != statusText)
-                {
-                    status = statusText;
-                    dirty = true;
-                }
-            }
-            if (dirty)
-            {
-                SDL_RenderClear(renderer);
-                DrawImage(image);
-                DrawText(textFont, status);
-                SDL_RenderPresent(renderer);
-            }
+            interface.drawHome(p.dirty, p.connected ? PROTOCOL_STATUS_CONNECTED : p.deviceStatus);
+            p.dirty = false;
         }
 
         Uint32 frameEnd = SDL_GetTicks();
         Uint32 frameTime = frameEnd - frameStart;
-        if (frameTime < frameDelay)
+        if (active && frameTime < p.frameDelay)
         {
-            SDL_Delay(frameDelay - frameTime); // Sleep only the remaining time
-            frameStart = frameStart + frameDelay;
+            SDL_Delay(p.frameDelay - frameTime); // Sleep only the remaining time
+            frameStart = frameStart + p.frameDelay;
         }
         else
             frameStart = frameEnd;
@@ -304,20 +238,8 @@ void application()
     SDL_HideWindow(window);
 }
 
-int main(int argc, char **argv)
+int start()
 {
-    std::cout << title << std::endl;
-
-    if (argc > 2)
-    {
-        std::cerr << "  Usage: " << argv[0] << " [settings_file]" << std::endl;
-        return 1;
-    }
-    if (argc == 2)
-    {
-        Settings::load(argv[1]);
-    }
-
     if (!Settings::logging)
         disable_cout();
     else
@@ -370,9 +292,19 @@ int main(int argc, char **argv)
     renderer = SDL_CreateRenderer(window, -1, (Settings::vsync ? (SDL_RENDERER_ACCELERATED | SDL_RENDERER_PRESENTVSYNC) : SDL_RENDERER_ACCELERATED));
     if (renderer)
     {
-        std::cout << "[Main] Started" << std::endl;
-        application();
-        std::cout << "[Main] Finish" << std::endl;
+        evtStatus = SDL_RegisterEvents(2);
+        if (evtStatus != (Uint32)-1)
+        {
+            evtConnected = evtStatus + 1;
+            std::cout << "[Main] Started" << std::endl;
+            application();
+            std::cout << "[Main] Finish" << std::endl;
+        }
+        else
+        {
+            std::cerr << "[Main] Can't register custom events" << std::endl;
+        }
+
         SDL_DestroyRenderer(renderer);
     }
     else
@@ -380,12 +312,29 @@ int main(int argc, char **argv)
         std::cerr << "[Main] SDL can't create renderer: " << SDL_GetError() << std::endl;
     }
 
-    if (textTexture)
-        SDL_DestroyTexture(textTexture);
-    if (imgTexture)
-        SDL_DestroyTexture(imgTexture);
     SDL_DestroyWindow(window);
     TTF_Quit();
     SDL_Quit();
     return 0;
+}
+
+int main(int argc, char **argv)
+{
+    std::cout << title << std::endl;
+    if (argc > 2)
+    {
+        std::cerr << "  Usage: " << argv[0] << " [settings_file]" << std::endl;
+        return 0;
+    }
+    try
+    {
+        if (argc == 2)
+            Settings::load(argv[1]);
+        return start();
+    }
+    catch (const std::exception &e)
+    {
+        std::cerr << e.what() << std::endl;
+        return 1;
+    }
 }
\ No newline at end of file
diff --git a/src/pcm_audio.h b/src/pcm_audio.h
index 7cb3b80..03ce003 100644
--- a/src/pcm_audio.h
+++ b/src/pcm_audio.h
@@ -9,7 +9,6 @@
 
 #include "struct/atomic_queue.h"
 #include "struct/message.h"
-#include "helper/error.h"
 
 #define FADE_IN_SPEED 0.00001
 #define FADE_OUT_SPEED 0.0001
diff --git a/src/protocol.cpp b/src/protocol.cpp
index 93d5c69..875e484 100644
--- a/src/protocol.cpp
+++ b/src/protocol.cpp
@@ -23,9 +23,10 @@ Protocol::~Protocol()
     stop();
 }
 
-void Protocol::start(StatusCallback onStatus)
+void Protocol::start(uint32_t evtStatus, uint32_t evtPhone)
 {
-    _statusCallback = onStatus;
+    _evtStatusId = evtStatus;
+    _evtPhoneId = evtPhone;
     connector.start(this);
 }
 
@@ -146,10 +147,9 @@ void Protocol::sendEncryption()
     connector.send(CMD_ENCRYPTION, false, buf, 4);
 }
 
-void Protocol::onStatus(const char *status)
+void Protocol::onStatus(uint8_t status)
 {
-    if (_statusCallback)
-        _statusCallback(status);
+    pushEvent(_evtStatusId, status);
 }
 
 void Protocol::onDevice(bool connected)
@@ -162,9 +162,12 @@ void Protocol::onDevice(bool connected)
         if (Settings::dpi > 0)
             sendFile("/tmp/screen_dpi", Settings::dpi);
         sendFile("/etc/android_work_mode", 1);
-        sendFile("/tmp/night_mode", 2);      // 0==day, 1==night, 2==???
-        sendFile("/tmp/hand_drive_mode", 0); // 0==left, 1==right
-        sendFile("/tmp/charge_mode", 0);
+        if (Settings::nightMode < 0 || Settings::nightMode > 2) // 0==day, 1==night, 2==auto
+            sendFile("/tmp/night_mode", 2);
+        else
+            sendFile("/tmp/night_mode", Settings::nightMode);
+        sendFile("/tmp/hand_drive_mode", Settings::leftDrive ? 0 : 1); // 0==left, 1==right
+        sendFile("/tmp/charge_mode", Settings::weakCharge ? 0 : 2);    // Weak charge 0, other 2
         sendFile("/etc/box_name", "CarPlay");
         if (Settings::autoconnect)
             sendInt(CMD_CONTROL, 1002);
@@ -186,6 +189,8 @@ void Protocol::onPhone(bool connected)
 
     std::cout << (connected ? "[Protocol] Phone connected" : "[Protocol] Phone disconnected") << std::endl;
 
+    pushEvent(_evtPhoneId, connected ? 1 : 0);
+
     if (connected && Settings::onConnect.value.length() > 1)
         execute(Settings::onConnect.value.c_str());
 
@@ -198,6 +203,14 @@ void Protocol::onData(uint32_t cmd, uint32_t length, uint8_t *data)
     bool dispose = true;
     switch (cmd)
     {
+    case CMD_PLUGGED:
+        onPhone(true);
+        break;
+
+    case CMD_UNPLUGGED:
+        onPhone(false);
+        break;
+
     case CMD_VIDEO_DATA:
     {
         if (length <= 20)
@@ -228,12 +241,8 @@ void Protocol::onData(uint32_t cmd, uint32_t length, uint8_t *data)
         }
         break;
     }
-    case CMD_PLUGGED:
-        onPhone(true);
-        break;
-
-    case CMD_UNPLUGGED:
-        onPhone(false);
+    case CMD_CONTROL:
+        Connector::printBytes(data, length, 20);
         break;
 
     case CMD_ENCRYPTION:
diff --git a/src/protocol.h b/src/protocol.h
index 157cbc1..4ebe573 100644
--- a/src/protocol.h
+++ b/src/protocol.h
@@ -19,7 +19,7 @@ public:
 
     static const char *cmdString(int cmd);
 
-    void start(StatusCallback onStatus);
+    void start(uint32_t evtStatus, uint32_t evtPhone);
     void stop();
 
     void sendKey(int key);
@@ -40,7 +40,7 @@ private:
     void sendInt(uint32_t cmd, uint32_t value, bool encryption = true);
     void sendEncryption();
 
-    void onStatus(const char *status) override;
+    void onStatus(uint8_t status) override;
     void onDevice(bool connected) override;
     void onData(uint32_t cmd, uint32_t length, uint8_t *data) override;
 
@@ -50,7 +50,8 @@ private:
     uint16_t _height;
     uint16_t _fps;
 
-    StatusCallback _statusCallback = nullptr;
+    uint32_t _evtStatusId = (uint32_t) -1;
+    uint32_t _evtPhoneId = (uint32_t) -1;
 };
 
 #endif /* SRC_PROTOCOL */
diff --git a/src/renderer.cpp b/src/renderer.cpp
index 8929511..68c31dc 100644
--- a/src/renderer.cpp
+++ b/src/renderer.cpp
@@ -1,18 +1,156 @@
 #include "renderer.h"
-#include "helper/error.h"
 #include <iostream>
+#include "settings.h"
+#include "helper/functions.h"
+#include <SDL2/SDL_ttf.h>
+
+RendererText::RendererText(const void *font_data, int data_size, int ptsize)
+    : width(0),
+      height(0),
+      _font(nullptr),
+      _texture(nullptr),
+      _text(" "),
+      _color({0, 0, 0, 0})
+{
+    if (ptsize < 1)
+        return;
+
+    SDL_RWops *font_rw = SDL_RWFromConstMem(font_data, data_size);
+    if (!font_rw)
+    {
+        std::cerr << "[UX] SDL can't open font: " << SDL_GetError() << std::endl;
+        return;
+    }
+
+    _font = TTF_OpenFontRW(font_rw, 1, ptsize);
+    if (!_font)
+    {
+        std::cerr << "[UX] SDL can't load font: " << TTF_GetError() << std::endl;
+    }
+};
+
+RendererText::~RendererText()
+{
+    if (_texture)
+    {
+        SDL_DestroyTexture(_texture);
+        _texture = nullptr;
+    }
+
+    if (_font)
+    {
+        TTF_CloseFont(_font);
+        _font = nullptr;
+    }
+};
+
+bool RendererText::prepare(SDL_Renderer *renderer, std::string text, SDL_Color color)
+{
+    if (!_texture || _text.compare(text) != 0 || !sameColor(_color, color))
+    {
+        if (_texture)
+            SDL_DestroyTexture(_texture);
+        _texture = getText(renderer, text.c_str(), color);
+        _text = text;
+        _color = color;
+        SDL_QueryTexture(_texture, nullptr, nullptr, &width, &height);
+    }
+    return _texture;
+}
+
+SDL_Rect RendererText::draw(SDL_Renderer *renderer, int x, int y)
+{
+    if (!_texture)
+        return {0, 0, 0, 0};
+
+    SDL_Rect dstRect = {x, y, (int)(width * Settings::aspectCorrection), height};
+    SDL_RenderCopy(renderer, _texture, nullptr, &dstRect);
+    return dstRect;
+}
+
+SDL_Texture *RendererText::getText(SDL_Renderer *renderer, const char *text, SDL_Color color)
+{
+    if (!_font)
+        return nullptr;
+
+    SDL_Surface *textSurface = TTF_RenderText_Blended(_font, text, color);
+    if (!textSurface)
+    {
+        std::cerr << "[UX] Failed to create text surface: " << TTF_GetError() << std::endl;
+        return nullptr;
+    }
+
+    SDL_Texture *textTexture = SDL_CreateTextureFromSurface(renderer, textSurface);
+    SDL_FreeSurface(textSurface);
+    if (!textTexture)
+    {
+        std::cerr << "[UX] Failed to create text texture: " << TTF_GetError() << std::endl;
+        return nullptr;
+    }
+
+    return textTexture;
+}
+
+RendererImage::RendererImage(const void *img_data, int img_size)
+    : width(0), height(0), _surface(nullptr), _aspect(0)
+{
+    SDL_RWops *img_rw = SDL_RWFromConstMem(img_data, img_size);
+    if (!img_rw)
+    {
+        std::cerr << "[UX] SDL can't open image: " << SDL_GetError() << std::endl;
+        return;
+    }
+
+    _surface = SDL_LoadBMP_RW(img_rw, 1);
+    if (!_surface)
+    {
+        std::cerr << "[UX] Failed to create image surface: " << SDL_GetError() << std::endl;
+        return;
+    }
+
+    width = _surface->w;
+    height = _surface->h;
+};
+
+RendererImage::~RendererImage()
+{
+    if (_surface)
+    {
+        SDL_FreeSurface(_surface);
+        _surface = nullptr;
+    }
+};
+
+SDL_Rect RendererImage::draw(SDL_Renderer *renderer, int w, int h)
+{
+    if (!_texture)
+    {
+        _texture = SDL_CreateTextureFromSurface(renderer, _surface);
+        if (!_texture)
+            return {0, 0, 0, 0};
+        SDL_GetRendererOutputSize(renderer, &width, &height);
+        _aspect = 1.0 * height / width;
+    }
+
+    float scale = 1.0 * h / height;
+    int imgw = width * scale * Settings::aspectCorrection;
+
+    SDL_Rect dst = {w - imgw, 0, imgw, h};
+    SDL_RenderCopy(renderer, _texture, nullptr, &dst);
+    return dst;
+}
 
 const Renderer::FormatMapping Renderer::_mapping[] = {
     {AV_PIX_FMT_RGB24, SDL_PIXELFORMAT_RGB24, &Renderer::rgb, "RGB24"},
     {AV_PIX_FMT_YUV420P, SDL_PIXELFORMAT_IYUV, &Renderer::yuv, "YUV420P"},
-    {AV_PIX_FMT_YUVJ420P, SDL_PIXELFORMAT_IYUV, &Renderer::yuv, "YUVJ420P"},    
+    {AV_PIX_FMT_YUVJ420P, SDL_PIXELFORMAT_IYUV, &Renderer::yuv, "YUVJ420P"},
     {AV_PIX_FMT_NV12, SDL_PIXELFORMAT_NV12, &Renderer::nv, "NV12"}};
 
 Renderer::Renderer(SDL_Renderer *renderer)
-    : texture(nullptr),
-      textureWidth(0),
-      textureHeight(0),
-      _renderer(renderer),
+    : _renderer(renderer),
+      _texture(nullptr),
+      _textureWidth(0),
+      _textureHeight(0),
       _render(nullptr),
       _sws(nullptr),
       _swsWidth(0),
@@ -23,10 +161,10 @@ Renderer::Renderer(SDL_Renderer *renderer)
 
 Renderer::~Renderer()
 {
-    if (texture)
+    if (_texture)
     {
-        SDL_DestroyTexture(texture);
-        texture = nullptr;
+        SDL_DestroyTexture(_texture);
+        _texture = nullptr;
     }
     if (_sws)
     {
@@ -43,27 +181,31 @@ Renderer::~Renderer()
 bool Renderer::render(AVFrame *frame)
 {
     if (_render == nullptr)
-        return false;
+        if (!prepare(frame, Settings::width, Settings::height, Settings::scaler))
+            return false;
     (this->*_render)(frame);
+    SDL_RenderClear(_renderer);
+    SDL_RenderCopy(_renderer, _texture, nullptr, nullptr);
+    SDL_RenderPresent(_renderer);
     return true;
 }
 
 bool Renderer::prepareTexture(uint32_t format, int width, int height)
 {
-    if (texture)
+    if (_texture)
     {
-        if (textureWidth == width && textureHeight == height)
+        if (_textureWidth == width && _textureHeight == height)
             return true;
-        SDL_DestroyTexture(texture);
-        texture = nullptr;
+        SDL_DestroyTexture(_texture);
+        _texture = nullptr;
     }
 
-    texture = SDL_CreateTexture(_renderer, format,
-                                SDL_TEXTUREACCESS_STREAMING,
-                                width, height);
-    if (!texture)
+    _texture = SDL_CreateTexture(_renderer, format,
+                                 SDL_TEXTUREACCESS_STREAMING,
+                                 width, height);
+    if (!_texture)
     {
-        std::cerr << "[Render] SDL can't create video texture: " << SDL_GetError() << std::endl;
+        std::cerr << "[UX] SDL can't create video texture: " << SDL_GetError() << std::endl;
         return false;
     }
     return true;
@@ -80,7 +222,7 @@ bool Renderer::prepare(AVFrame *frame, int targetWidth, int targetHeight, uint32
             {
                 if (prepareTexture(mapping.sdlFormat, targetWidth, targetHeight))
                 {
-                    std::cout << "[Render] Direct rendering " << mapping.name << std::endl;
+                    std::cout << "[UX] Direct rendering " << mapping.name << std::endl;
                     _render = mapping.function;
                     return true;
                 }
@@ -89,7 +231,7 @@ bool Renderer::prepare(AVFrame *frame, int targetWidth, int targetHeight, uint32
     }
     else
     {
-        std::cout << "[Render] Scaling required from " << frame->width << "x" << frame->height << " to " << targetWidth << "x" << targetHeight << std::endl;
+        std::cout << "[UX] Scaling required from " << frame->width << "x" << frame->height << " to " << targetWidth << "x" << targetHeight << std::endl;
     }
 
     if (!prepareTexture(SDL_PIXELFORMAT_IYUV, targetWidth, targetHeight))
@@ -108,7 +250,7 @@ bool Renderer::prepare(AVFrame *frame, int targetWidth, int targetHeight, uint32
                               scaler, nullptr, nullptr, nullptr);
         if (!_sws)
         {
-            std::cerr << "[Render] Can't create sws context" << std::endl;
+            std::cerr << "[UX] Can't create sws context" << std::endl;
             return false;
         }
         _swsWidth = frame->width;
@@ -120,7 +262,7 @@ bool Renderer::prepare(AVFrame *frame, int targetWidth, int targetHeight, uint32
         _frame = av_frame_alloc();
         if (!_frame)
         {
-            std::cerr << "[Render] Can't allocate AVFrame" << std::endl;
+            std::cerr << "[UX] Can't allocate AVFrame" << std::endl;
             return false;
         }
         _frame->format = AV_PIX_FMT_YUV420P;
@@ -130,12 +272,12 @@ bool Renderer::prepare(AVFrame *frame, int targetWidth, int targetHeight, uint32
         int avRes = av_frame_get_buffer(_frame, 32);
         if (avRes != 0)
         {
-            std::cerr << "[Render] Can't allocate AVFrame buffer: " << Error::avErrorText(avRes) << std::endl;
+            std::cerr << "[UX] Can't allocate AVFrame buffer: " << avErrorText(avRes) << std::endl;
             return false;
         }
     }
 
-    std::cout << "[Render] Scaling rendering source format " << frame->format << std::endl;
+    std::cout << "[UX] Scaling rendering source format " << frame->format << std::endl;
     _render = &Renderer::scale;
     return true;
 }
@@ -143,7 +285,7 @@ bool Renderer::prepare(AVFrame *frame, int targetWidth, int targetHeight, uint32
 void Renderer::rgb(AVFrame *frame)
 {
     SDL_UpdateTexture(
-        texture,
+        _texture,
         nullptr,
         frame->data[0], frame->linesize[0]);
 }
@@ -151,7 +293,7 @@ void Renderer::rgb(AVFrame *frame)
 void Renderer::nv(AVFrame *frame)
 {
     SDL_UpdateNVTexture(
-        texture,
+        _texture,
         nullptr,
         frame->data[0], frame->linesize[0],
         frame->data[1], frame->linesize[1]);
@@ -159,7 +301,7 @@ void Renderer::nv(AVFrame *frame)
 void Renderer::yuv(AVFrame *frame)
 {
     SDL_UpdateYUVTexture(
-        texture,
+        _texture,
         nullptr,
         frame->data[0], frame->linesize[0],
         frame->data[1], frame->linesize[1],
@@ -176,7 +318,7 @@ void Renderer::scale(AVFrame *frame)
               _frame->linesize);
 
     // Update SDL texture with YUV frame data
-    SDL_UpdateYUVTexture(texture, nullptr,
+    SDL_UpdateYUVTexture(_texture, nullptr,
                          _frame->data[0], _frame->linesize[0],
                          _frame->data[1], _frame->linesize[1],
                          _frame->data[2], _frame->linesize[2]);
diff --git a/src/renderer.h b/src/renderer.h
index 6d0bf2a..e88da5b 100644
--- a/src/renderer.h
+++ b/src/renderer.h
@@ -8,20 +8,53 @@ extern "C"
 }
 
 #include <SDL2/SDL.h>
+#include <SDL2/SDL_ttf.h>
 #include <string>
 
+class RendererText
+{
+public:
+    RendererText(const void *font_data, int data_size, int ptsize);
+    ~RendererText();
+    bool prepare(SDL_Renderer *renderer, std::string text, SDL_Color color);  
+    SDL_Rect draw(SDL_Renderer *renderer, int x, int y);
+    int width;
+    int height;
+
+private:
+    SDL_Texture *getText(SDL_Renderer *renderer, const char *text, SDL_Color color);
+    static int sameColor(SDL_Color c1, SDL_Color c2) { return (c1.r == c2.r) && (c1.g == c2.g) && (c1.b == c2.b) && (c1.a == c2.a); }
+    TTF_Font *_font = nullptr;
+    SDL_Texture *_texture = nullptr;
+    std::string _text;
+    SDL_Color _color;
+};
+
+class RendererImage
+{
+public:
+    RendererImage(const void *img_data, int img_size);
+    ~RendererImage();
+    SDL_Rect draw(SDL_Renderer *renderer, int w, int h);
+    int width;
+    int height;
+
+private:
+    SDL_Surface *_surface = nullptr;
+    SDL_Texture *_texture = nullptr;    
+    float _aspect;
+};
+
 class Renderer
 {
 public:
     Renderer(SDL_Renderer *renderer);
     ~Renderer();
 
-    bool prepare(AVFrame *frame, int targetWidth, int targetHeight, uint32_t scaler);
     bool render(AVFrame *frame);
 
-    SDL_Texture *texture;
-    int textureWidth;
-    int textureHeight;
+protected:
+    SDL_Renderer *_renderer;
 
 private:
     using DrawFuncType = void (Renderer::*)(AVFrame *);
@@ -34,6 +67,7 @@ private:
         std::string name;
     };
 
+    bool prepare(AVFrame *frame, int targetWidth, int targetHeight, uint32_t scaler);
     bool prepareTexture(uint32_t format, int width, int height);
 
     void rgb(AVFrame *frame);
@@ -41,7 +75,10 @@ private:
     void yuv(AVFrame *frame);
     void scale(AVFrame *frame);
 
-    SDL_Renderer *_renderer;
+    SDL_Texture *_texture;
+    int _textureWidth;
+    int _textureHeight;
+
     DrawFuncType _render;
     SwsContext *_sws;
     int _swsWidth;
diff --git a/src/resource/background.bmp b/src/resource/background.bmp
index a720773..6d94d00 100644
Binary files a/src/resource/background.bmp and b/src/resource/background.bmp differ
diff --git a/src/resource/colors.h b/src/resource/colors.h
new file mode 100644
index 0000000..9c4609a
--- /dev/null
+++ b/src/resource/colors.h
@@ -0,0 +1,16 @@
+#ifndef SRC_RESOURCE_COLORS
+#define SRC_RESOURCE_COLORS
+
+#include <SDL2/SDL.h>
+
+const SDL_Color color1_inactive = {255, 255, 255, 80};
+const SDL_Color color2_inactive = {255, 255, 255, 80};
+const SDL_Color color3_inactive = {255, 255, 255, 80};
+const SDL_Color color4_inactive = {255, 255, 255, 80};
+const SDL_Color color1 = {255, 87, 137, 255};
+const SDL_Color color2 = {135, 98, 255, 255};
+const SDL_Color color3 = {94, 228, 255, 255};
+const SDL_Color color4 = {93, 255, 197, 255};
+const SDL_Color colorError = {255, 83, 64, 255};
+
+#endif /* SRC_RESOURCE_COLORS */
diff --git a/src/settings.h b/src/settings.h
index e79cec7..3bf720d 100644
--- a/src/settings.h
+++ b/src/settings.h
@@ -7,31 +7,41 @@
 class Settings
 {
 public:
+    // General section
     static inline Setting<int> vendorid{"vendor-id", 4884};
     static inline Setting<int> productid{"product-id ", 5408};
-    static inline Setting<bool> fullscreen{"fullscreen", true};
-    static inline Setting<int> dpi{"dpi", 0};    
-    static inline Setting<int> width{"width", 720};
-    static inline Setting<int> height{"height", 576};
-    static inline Setting<int> fps{"fps", 50};
-    static inline Setting<bool> vsync{"vsync", false}; 
     static inline Setting<int> sourceWidth{"source-width", 720};
     static inline Setting<int> sourceHeight{"source-height", 576};
     static inline Setting<int> sourceFps{"source-fps", 50};
+    static inline Setting<int> width{"width", 720};
+    static inline Setting<int> height{"height", 576};
+    static inline Setting<int> fps{"fps", 50};
+    static inline Setting<bool> fullscreen{"fullscreen", true};
     static inline Setting<bool> logging{"logging", false};
+
+    // Device configurations section
+    static inline Setting<bool> encryption{"encryption", false};
+    static inline Setting<bool> autoconnect{"autoconnect", true};
+    static inline Setting<bool> weakCharge{"weak-charge", true};
+    static inline Setting<bool> leftDrive{"left-hand-drive", true};
+    static inline Setting<int> nightMode{"night-mode", 2};        
+    static inline Setting<int> dpi{"dpi", 0};
+
+    // Application configuration section
+    static inline Setting<int> fontSize{"font-size", 30};    
+    static inline Setting<bool> vsync{"vsync", false};
+    static inline Setting<float> aspectCorrection{"aspect-correction", 1};    
     static inline Setting<int> scaler{"scaler", 2};
     static inline Setting<bool> fastScale{"fast-render-scale", false};
     static inline Setting<int> videoQueue{"video-buffer-size", 32};
-    static inline Setting<int> audioQueue{"audio-buffer-size", 16};    
-    static inline Setting<int> audioDelay{"audio-buffer-wait", 2};    
-    static inline Setting<float> audioFade{"audio-fade", 0.3};            
-    static inline Setting<int> fontSize{"font-size", 30};
-    static inline Setting<bool> encryption{"encryption", false};
-    static inline Setting<bool> autoconnect{"autoconnect", true};
+    static inline Setting<int> audioQueue{"audio-buffer-size", 16};
+    static inline Setting<int> audioDelay{"audio-buffer-wait", 2};
+    static inline Setting<float> audioFade{"audio-fade", 0.3};
     static inline Setting<std::string> onConnect{"on-connect-script", ""};
-    static inline Setting<std::string> onDisconnect{"on-disconnect-script", ""};       
-    static inline Setting<int> protocolDebug{"protocol-debug", 0};      
-   
+    static inline Setting<std::string> onDisconnect{"on-disconnect-script", ""};
+
+    // Debug section
+    static inline Setting<int> protocolDebug{"protocol-debug", 0};
 
     static void load(const std::string &filename);
     static void print();
diff --git a/src/struct/video_buffer.h b/src/struct/video_buffer.h
index bf88e93..76ba814 100644
--- a/src/struct/video_buffer.h
+++ b/src/struct/video_buffer.h
@@ -75,6 +75,13 @@ public:
         _latest.store(_writing.load());
     }
 
+    void reset()
+    {
+        _writing.store(0);
+        _reading.store(-1);
+        _latest.store(-1);
+    }
+
 private:
     std::atomic<int8_t> _latest;
     std::atomic<int8_t> _reading;