diff --git a/bcdriver.cpp b/bcdriver.cpp
index c9a1b4a..d99f458 100644
--- a/bcdriver.cpp
+++ b/bcdriver.cpp
@@ -61,8 +61,8 @@ BCDriver::DriverState BCDriver::getState() const
 
 void BCDriverDummy::onStartDriver()
 {
-  _driverState = DriverState::Ready;
-  emit driverStateChanged( DriverState::Ready, "Driver Ready." );
+  _driverState = DriverState::DeviceReady;
+  emit driverStateChanged( DriverState::DeviceReady, "Driver Ready." );
 }
   /*
   try
@@ -101,22 +101,21 @@ BCDriverDummy::BCDriverDummy( QObject* parent )
 }
 
 
-uint32_t BCDriverDummy::readRawByte( uint32_t deviceID, uint8_t registerID ) const
+BCDriver::TransmitResult BCDriverDummy::readRawByte( uint32_t deviceID, uint8_t registerID ) const
 {
-  if( getState() != DriverState::Ready)
-    throw BCException( "readRawValue error: driver not loaded." );
-
-  uint32_t myRandomByte = static_cast<uint32_t>(QRandomGenerator::global()->bounded(256));
+  Q_UNUSED(deviceID)
+  Q_UNUSED(registerID)
+  qDebug() << " --- DriverState: " << _driverState;
+  uint8_t myRandomByte = static_cast<uint8_t>(QRandomGenerator::global()->bounded(256));
   return myRandomByte;
 }
 
-void BCDriverDummy::writeRawByte( uint32_t deviceID, uint8_t registerID, uint8_t value ) const
+BCDriver::TransmitResult BCDriverDummy::writeRawByte( uint32_t deviceID, uint8_t registerID, uint8_t value ) const
 {
-  if( getState() != DriverState::Ready)
-    throw BCException( "readRawValue error: driver not loaded." );
-
+  Q_UNUSED(deviceID)
+  Q_UNUSED(registerID)
   qDebug() << " --- BCDriverTinyCan writeRawValue: " << value;
-  return;
+  return 0;
 }
 
 
diff --git a/bcdriver.h b/bcdriver.h
index b696bdc..1406989 100644
--- a/bcdriver.h
+++ b/bcdriver.h
@@ -34,7 +34,7 @@
 #define BCDRIVER_H
 
 #include <QObject>
-
+#include <expected>
 #include <bc.h>
 
 /*
@@ -75,7 +75,7 @@ class  BCDriverStatus;
  * @Abstrakte Basisklasse für alle CAN-Bus Treiber.
  * Das Bionx CAN-Bus System kann auf verschiedenen Wegen
  * angesprochen werden, etwa den über BBI USB2CAN Controller,
- * über den TinyCAN Adapter oder ggf. über einen EL327 Stecker.
+ * über den TinyCAN Adapter oder ggf. über einen ELM327 Stecker.
  *
  * Die hier relevante Implementierung über das TinyCan System
  * findet sich in der Unterklasse 'BCDriverTinyCan'.
@@ -90,6 +90,9 @@ class BCDriver : public QObject
 
 public:
 
+  // Die möglichen Zustände beim Laden
+  // des CAN-Bus Treibers.
+
   enum class DriverState
   {
     NotPresent,
@@ -97,17 +100,22 @@ public:
     Loaded,
     Initialized,
     Opened,      // bis hierher: dll vorhanden, Treiber geladen
-    Ready         // hier: devices connectable
+    DeviceReady  // hier: devices connectable
   };
   Q_ENUM(DriverState)
 
+  // Enthält den Treiberzustand oder einen Fehlerstring
+  using DriverStateResult = std::expected<DriverState,QString>;
+  // Enthält den gelesenen Wert oder einen Fehlerstring
+  using TransmitResult = std::expected<uint8_t,QString>;
+
   explicit BCDriver( QObject* parent = nullptr );
   virtual ~BCDriver() = default;
 
   DriverState getState() const;
 
-  virtual uint32_t readRawByte( uint32_t deviceID, uint8_t registerID ) const = 0;
-  virtual void     writeRawByte( uint32_t deviceID, uint8_t registerID, uint8_t value ) const = 0;
+  virtual TransmitResult readRawByte( uint32_t deviceID, uint8_t registerID ) const = 0;
+  virtual TransmitResult writeRawByte(uint32_t deviceID, uint8_t registerID, uint8_t value ) const = 0;
 
 public slots:
 
@@ -132,8 +140,8 @@ public:
 
   explicit BCDriverDummy( QObject* parent = nullptr );
 
-  uint32_t readRawByte( uint32_t deviceID, uint8_t registerID ) const override;
-  void     writeRawByte( uint32_t deviceID, uint8_t registerID, uint8_t value ) const override;
+  TransmitResult readRawByte( uint32_t deviceID, uint8_t registerID ) const override;
+  TransmitResult writeRawByte( uint32_t deviceID, uint8_t registerID, uint8_t value ) const override;
 
 public slots:
 
diff --git a/bcdrivertinycan.cpp b/bcdrivertinycan.cpp
index 7f2d0bf..490de1c 100644
--- a/bcdrivertinycan.cpp
+++ b/bcdrivertinycan.cpp
@@ -35,7 +35,7 @@
 #include <bcdrivertinycan.h>
 #include <can_drv.h>
 
-#include <expected>
+
 
 
 
@@ -57,16 +57,15 @@ void BCDriverTinyCan::onStartDriver()
 void BCDriverTinyCan::loadDriver()
 {
 
-  using Result=std::expected<DriverState,QString>;
 
-  auto callLoadDriver = []() -> Result
+  auto callLoadDriver = []() -> DriverStateResult
   {
     if( ::LoadDriver( NULL ) < 0 )
       return std::unexpected(QString("Driver Error: 'LoadDriver'"));
     return DriverState::Loaded;
   };
 
-  auto callInitDriver = [](DriverState state) -> Result
+  auto callInitDriver = [](DriverState state) -> DriverStateResult
   {
     Q_UNUSED(state)
     if( ::CanInitDriver( NULL ) < 0 )
@@ -74,7 +73,7 @@ void BCDriverTinyCan::loadDriver()
     return DriverState::Initialized;
   };
 
-  auto callOpenDevice = [](DriverState state) -> Result
+  auto callOpenDevice = [](DriverState state) -> DriverStateResult
   {
     Q_UNUSED(state)
     if( ::CanDeviceOpen( 0, NULL ) < 0 )
@@ -122,27 +121,27 @@ BCDriver::DriverState BCDriverTinyCan::connectDriver()
 
   // Console already in slave mode. good!
   if( readRawByte( console, slaveFlag ) )
-    return DriverState::Ready;
+    return DriverState::DeviceReady;
 
   qDebug() << "BCDriverTinyCan::BCDriverTinyCan::XXX Driver Init: putting Console in slave mode ... ";
 
   unsigned int retry = cTimeOuts;
   emit driverStateChanged( _driverState, "Driver Init: putting Console in slave mode ... " );
-  uint32_t isSlave = 0;
+   TransmitResult isSlave = 0;
   do
     {
       writeRawByte( console, slaveFlag, 1 );
-      isSlave = readRawByte( console, slaveFlag );
+     isSlave = readRawByte( console, slaveFlag );
       bc::delay_millis( 200 );
 
-    } while( retry-- && !isSlave );
+    } while( retry-- && !(*isSlave) );
 
   bc::delay_millis( 500 ); // give the Console some time to settle
   //if( !isSlave )
   //emit statusHint( QString("putting Console in slave mode ") + (isSlave ? "done" : "failed") );
 
   // ist das jetzt irgendwie schlimm, wenn wir keine slave Console haben
-  return isSlave ? DriverState::Ready : DriverState::Opened;
+  return isSlave ? DriverState::DeviceReady : DriverState::Opened;
 
 }
 
@@ -165,12 +164,18 @@ BCDriver::DriverState BCDriverTinyCan::connectDriver()
 
 
 
-uint32_t BCDriverTinyCan::readRawByte( uint32_t deviceID, uint8_t registerID ) const
+BCDriver::TransmitResult BCDriverTinyCan::readRawByte( uint32_t deviceID, uint8_t registerID ) const
 {
 
-  if( getState() != DriverState::Ready)
-    throw BCException( "readRawValue error: driver not loaded." );
+  //TransmitResult
+  qDebug() << " --- DriverState: " << _driverState;
 
+  /*
+   Nicht hier!
+  if( getState() != DriverState::DeviceReady)
+    //throw BCException( "readRawValue error: driver not loaded." );
+    return std::nullopt;
+  */
   ::TCanMsg msg;
 
   // msg verpacken
@@ -192,7 +197,7 @@ uint32_t BCDriverTinyCan::readRawByte( uint32_t deviceID, uint8_t registerID ) c
     bc::delay_millis( cTIMEOUT_MS );
 
   if( timeOuts == -1 )
-    throw BCException( "readRawValue error: could not send value" );
+     return std::unexpected(QString("readRawValue error: could not send value" ));
 
 retry:
 
@@ -202,8 +207,8 @@ retry:
   while( timeOuts-- && !::CanReceiveGetCount( 0 ) )
     bc::delay_millis( cTIMEOUT_MS );
 
-  if( timeOuts == -1 )
-    throw BCException( "getValue error: no response from node" );
+  if( timeOuts == -1 )    
+    return std::unexpected(QString("getValue error: no response from node" ));
 
   // message empfangen
   int err = ::CanReceive( 0, &msg, 1 );
@@ -222,22 +227,23 @@ retry:
     goto retry;
 
   if( !timeOuts )
-    throw BCException( "CAN --response errror" );
+    return std::unexpected(QString("CAN response errror: timeout" ));
 
-  return (uint32_t) msg.MsgData[3];
+  return (uint8_t) msg.MsgData[3];
 
 }
 
 
 // void BCDriverTinyCan::setValue( unsigned char receipient, unsigned char reg, unsigned char value )
-void BCDriverTinyCan::writeRawByte( uint32_t deviceID, uint8_t registerID ,uint8_t value ) const
+BCDriver::TransmitResult BCDriverTinyCan::writeRawByte( uint32_t deviceID, uint8_t registerID ,uint8_t value ) const
 {
 
-  if( getState() != DriverState::Ready)
+  /*
+  Nicht hier!
+ if( getState() != DriverState::DeviceReady)
     throw BCException( "writeRawValue error: driver not loaded." );
-
+  */
   qDebug() << " --- BCDriverTinyCan writeRawValue: " << value;
-  return;
 
   ::TCanMsg msg;
   int timeout_count = cTIMEOUT_COUNT;
@@ -256,7 +262,8 @@ void BCDriverTinyCan::writeRawByte( uint32_t deviceID, uint8_t registerID ,uint8
     bc::delay_millis( cTIMEOUT_MS );
 
   if( timeout_count == -1 )
-    emit driverStateChanged( _driverState, QString( "error: could not send value to %1" ).arg( deviceID ) );
+    return std::unexpected(QString("error: could not send value to %1" ).arg( deviceID ) );
 
+  return 1; // als 'true'
 }
 
diff --git a/bcdrivertinycan.h b/bcdrivertinycan.h
index 05c85ae..543c731 100644
--- a/bcdrivertinycan.h
+++ b/bcdrivertinycan.h
@@ -44,11 +44,14 @@ public:
   explicit BCDriverTinyCan( QObject* parent=nullptr );
   virtual ~BCDriverTinyCan() = default;
 
-  uint32_t readRawByte ( uint32_t deviceID, uint8_t registerID ) const override;
-  void     writeRawByte( uint32_t deviceID, uint8_t registerID, uint8_t value ) const override;
+  TransmitResult readRawByte ( uint32_t deviceID, uint8_t registerID ) const override;
+  TransmitResult writeRawByte( uint32_t deviceID, uint8_t registerID, uint8_t value ) const override;
 
   QString getNodeName( unsigned char id );
 
+
+
+
 public slots:
 
   void onStartDriver() override;
diff --git a/bcmainwindow.cpp b/bcmainwindow.cpp
index 924fe98..bb04bce 100644
--- a/bcmainwindow.cpp
+++ b/bcmainwindow.cpp
@@ -46,14 +46,18 @@
 BCMainWindow::BCMainWindow(QWidget *parent)
   : QMainWindow(parent)
 {
-  // WICHTIG: Registriere sowohl das Struct als auch die LISTE des Structs
+  // __fix! in der Form nötig?
   qRegisterMetaType<BCValue>("BCValue");
   qRegisterMetaType<QList<BCValue>>("BCValueList");
 
   setupUi(this);
 
-  // BESTE PRAXIS: QTimer::singleShot mit Lambda
-  QTimer::singleShot(0, this, [this]() {
+  // Wir schreiben den 'initMainWindow()' Aufruf mit Hilfe des
+  // timers in die Event-Queue, damit er erst ausgeführt wird,
+  // wenn das Fenster sichtbar ist.
+
+  QTimer::singleShot(0, this, [this]()
+  {
     initMainWindow();
   });
 
@@ -88,13 +92,12 @@ void BCMainWindow::setHeaderLabel( const QString& headerText)
 void BCMainWindow::initMainWindow()
 {
 
+  // Lambda um die buttons mit  ihren Actions zu verbinden
   auto configureAction = [&]( QToolButton* button, QAction* action, BCDevice::ID deviceID  )
   {
+
     // Action an den Button binden
     button->setDefaultAction( action);
-    // old school, not used
-    //connect( action, &QAction::triggered, this, &BCMainWindow::onActionButtonTriggered );
-    //connect( action, &QAction::toggled, this, &BCMainWindow::onActionButtonToggled );
 
     // new way: die DeviceID muss aber explizit vom Lambda eingefanden werden.
     connect( action, &QAction::triggered, this, [this,deviceID]()
@@ -114,11 +117,11 @@ void BCMainWindow::initMainWindow()
     }
   };
 
-
   // Wir wollen die Devices den Views zuordnen können
   _devicePanels[BCDevice::ID::Console] = _consolePanel;
   _devicePanels[BCDevice::ID::Battery] = _batteryPanel;
   _devicePanels[BCDevice::ID::Motor]   = _motorPanel;
+  _devicePanels[BCDevice::ID::Pimp]    = _pimpPanel;
 
   // Die actions an die Buttons binden
   configureAction(_motorButton,   _motorAction,   BCDevice::ID::Motor );
@@ -161,7 +164,7 @@ void BCMainWindow::initMainWindow()
 
   _worker.start();
 
-  bc::processEventsFor(2000);
+
 
   // die Daten des eBikes laden
   _dataManager.loadXmlBikeData(":/bikeinfo.xml"_L1);
diff --git a/bcmainwindow.h b/bcmainwindow.h
index ba4cf0f..3aadbfb 100644
--- a/bcmainwindow.h
+++ b/bcmainwindow.h
@@ -95,6 +95,7 @@ class ThemeSwitchButton : public QPushButton
   Q_OBJECT
 
 public:
+
   explicit ThemeSwitchButton(QWidget *parent = nullptr)
       : QPushButton(parent), m_isDarkMode(true)
   {
@@ -103,9 +104,9 @@ public:
     setCursor(Qt::PointingHandCursor);
     setFixedSize(24, 24); // Kleiner Footprint im StatusBar
 
-           // CSS: Transparent, damit es sich nahtlos in den StatusBar einfügt
-           // Schriftgröße etwas erhöhen, damit die Emojis gut erkennbar sind
-    setStyleSheet(R"(
+ // CSS: Transparent, damit es sich nahtlos in den StatusBar einfügt
+ // Schriftgröße etwas erhöhen, damit die Emojis gut erkennbar sind
+  setStyleSheet(R"(
             QPushButton {
                 border: none;
                 background-color: transparent;
@@ -113,7 +114,7 @@ public:
             }
             QPushButton:hover {
                 background-color: rgba(128, 128, 128, 30); // Leichter Hover-Effekt
-                border-radius: 4px;
+                border-radius: 24px;
             }
         )");
 
diff --git a/bctransmitter.cpp b/bctransmitter.cpp
index e1d850f..588e935 100644
--- a/bctransmitter.cpp
+++ b/bctransmitter.cpp
@@ -47,12 +47,11 @@ void BCTransmitter::onToggleConnectionState( bool connect )
 {
   if( connect )
   {
-    if( _canDriver->getState() != BCDriver::DriverState::Ready )
+    if( _canDriver->getState() != BCDriver::DriverState::DeviceReady )
       _canDriver->onStartDriver();
 
     // __fix!
-    uint32_t hwVersion = _canDriver->readRawByte( (uint32_t)BCDevice::ID::Console, (uint8_t)BC::ID::Cons_Rev_Hw);
-
+    BCDriver::TransmitResult hwVersion = _canDriver->readRawByte( (uint32_t)BCDevice::ID::Console, (uint8_t)BC::ID::Cons_Rev_Hw);
     if(!hwVersion)
     {
       qDebug() << "Console not responding";
@@ -63,7 +62,7 @@ void BCTransmitter::onToggleConnectionState( bool connect )
 
     }
 
-    qDebug() << " ---HAIL to the kings: " << hwVersion;
+    qDebug() << " ---HAIL to the kings: " << hwVersion.value();
   }
 }
 
@@ -141,9 +140,9 @@ void BCTransmitter::processValueOp( BCValue::OpID opID )
   }
 }
 
-uint32_t BCTransmitter::readRawByte(  uint32_t deviceID, uint8_t registerID  ) const
+uint8_t BCTransmitter::readByte(  uint32_t deviceID, uint8_t registerID  ) const
 {
-  uint32_t result{};
+  BCDriver::TransmitResult result;
   try
   {
     result = _canDriver->readRawByte( deviceID, registerID );
@@ -152,11 +151,11 @@ uint32_t BCTransmitter::readRawByte(  uint32_t deviceID, uint8_t registerID  ) c
   {    
      qDebug() << " -- OUCH: read exception: " << exception.what();
   }
-  return result;
+  return result.value();
 
 }
 
-void BCTransmitter::writeRawByte( uint32_t deviceID, uint8_t registerID , uint8_t value ) const
+void BCTransmitter::writeByte( uint32_t deviceID, uint8_t registerID , uint8_t value ) const
 {
   try
   {
diff --git a/bctransmitter.h b/bctransmitter.h
index 2c8f7cf..258122f 100644
--- a/bctransmitter.h
+++ b/bctransmitter.h
@@ -50,8 +50,8 @@ public:
 
   explicit BCTransmitter(QObject *parent = nullptr);
 
-  uint32_t readRawByte( uint32_t deviceID, uint8_t registerID ) const override;
-  void     writeRawByte( uint32_t deviceID, uint8_t registerID, uint8_t value ) const override;
+  uint8_t readByte( uint32_t deviceID, uint8_t registerID ) const override;
+  void    writeByte( uint32_t deviceID, uint8_t registerID, uint8_t value ) const override;
 
 public slots:
 
diff --git a/bcvalue.h b/bcvalue.h
index 310cced..1db18f6 100644
--- a/bcvalue.h
+++ b/bcvalue.h
@@ -66,8 +66,8 @@ class BCAbstractTransmitter
 
 public:
 
-  virtual uint32_t readRawByte( uint32_t deviceID, uint8_t registerID  ) const = 0;
-  virtual void     writeRawByte( uint32_t deviceID, uint8_t registerID , uint8_t value_ ) const = 0;
+  virtual uint8_t readByte ( uint32_t deviceID, uint8_t registerID ) const = 0;
+  virtual void    writeByte( uint32_t deviceID, uint8_t registerID, uint8_t value_ ) const = 0;
 };
 
 
diff --git a/bcvaluetype.cpp b/bcvaluetype.cpp
index 759b739..173feb8 100644
--- a/bcvaluetype.cpp
+++ b/bcvaluetype.cpp
@@ -108,7 +108,7 @@ BCValueTypeByte::BCValueTypeByte( QString unitLabel_, double factor_, optDouble
 
 QString BCValueTypeByte::createStringValue( const BCAbstractTransmitter& transmitter, uint32_t deviceID, uint8_t registerID ) const
 {
-  uint32_t result = transmitter.readRawByte( deviceID, registerID );
+  uint8_t result = transmitter.readByte( deviceID, registerID );
   return formatValue( result );
 }
 
@@ -124,9 +124,9 @@ QString BCValueTypeWord::createStringValue( const BCAbstractTransmitter& transmi
 {
   //getValue(CONSOLE, CONSOLE_SN_PN_HI) << 8) + getValue(CONSOLE, CONSOLE_SN_PN_LO)),
   // hi byte
-  uint32_t result = transmitter.readRawByte( deviceID, registerID ) << 8;
+  uint8_t result = transmitter.readByte( deviceID, registerID ) << 8;
   // low byte, use followup register: +1
-  result += transmitter.readRawByte( deviceID, registerID+1 );
+  result += transmitter.readByte( deviceID, registerID+1 );
 
    return formatValue( result );
 }