diff --git a/examples/CustomerBufferSize/CustomerBufferSize.ino b/examples/CustomerBufferSize/CustomerBufferSize.ino
new file mode 100644
index 0000000..6883a7a
--- /dev/null
+++ b/examples/CustomerBufferSize/CustomerBufferSize.ino
@@ -0,0 +1,61 @@
+#include <BLEMIDI_Transport.h>
+
+struct CustomBufferSizeSettings : public BLEMIDI_NAMESPACE::DefaultSettings {
+  static const size_t MaxBufferSize = 16; // was 64
+};
+
+#include <hardware/BLEMIDI_ESP32_NimBLE.h>
+//#include <hardware/BLEMIDI_ESP32.h>
+//#include <hardware/BLEMIDI_nRF52.h>
+//#include <hardware/BLEMIDI_ArduinoBLE.h>
+
+BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ESP32_NimBLE, CustomBufferSizeSettings> BLEMIDI("Esp32-NimBLE-MIDI"); \
+MIDI_NAMESPACE::MidiInterface<BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ESP32_NimBLE>, BLEMIDI_NAMESPACE::MySettings> MIDI((BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ESP32_NimBLE> &)BLEMIDI);
+
+unsigned long t0 = millis();
+bool isConnected = false;
+
+// -----------------------------------------------------------------------------
+// When BLE connected, LED will turn on (indication that connection was successful)
+// When receiving a NoteOn, LED will go out, on NoteOff, light comes back on.
+// This is an easy and conveniant way to show that the connection is alive and working. 
+// -----------------------------------------------------------------------------
+void setup()
+{
+  MIDI.begin();
+
+  pinMode(LED_BUILTIN, OUTPUT);
+  digitalWrite(LED_BUILTIN, LOW);
+
+  BLEMIDI.setHandleConnected([]() {
+    isConnected = true;
+    digitalWrite(LED_BUILTIN, HIGH);
+  });
+
+  BLEMIDI.setHandleDisconnected([]() {
+    isConnected = false;
+    digitalWrite(LED_BUILTIN, LOW);
+  });
+
+  MIDI.setHandleNoteOn([](byte channel, byte note, byte velocity) {
+    digitalWrite(LED_BUILTIN, LOW);
+  });
+  MIDI.setHandleNoteOff([](byte channel, byte note, byte velocity) {
+    digitalWrite(LED_BUILTIN, HIGH);
+  });
+}
+
+// -----------------------------------------------------------------------------
+//
+// -----------------------------------------------------------------------------
+void loop()
+{
+  MIDI.read();
+
+  if (isConnected && (millis() - t0) > 1000)
+  {
+    t0 = millis();
+
+    MIDI.sendNoteOn (60, 100, 1); // note 60, velocity 100 on channel 1
+  }
+}
diff --git a/src/hardware/BLEMIDI_ArduinoBLE.h b/src/hardware/BLEMIDI_ArduinoBLE.h
index 82f3a04..4044c60 100644
--- a/src/hardware/BLEMIDI_ArduinoBLE.h
+++ b/src/hardware/BLEMIDI_ArduinoBLE.h
@@ -63,7 +63,7 @@ private:
 class BLEMIDI_ArduinoBLE
 {
 private:   
-    static BLEMIDI_Transport<class BLEMIDI_ArduinoBLE>* _bleMidiTransport;
+    static BLEMIDI_Transport<class BLEMIDI_ArduinoBLE, DefaultSettings>* _bleMidiTransport;
     static BLEDevice* _central;
 
     Fifo<byte, 64> mRxBuffer;
@@ -73,7 +73,7 @@ public:
     {
     }
     
-	bool begin(const char*, BLEMIDI_Transport<class BLEMIDI_ArduinoBLE>*);
+	bool begin(const char*, BLEMIDI_Transport<class BLEMIDI_ArduinoBLE, DefaultSettings>*);
     
     void end() 
     {
@@ -183,10 +183,10 @@ protected:
     }
 };
 
-BLEMIDI_Transport<class BLEMIDI_ArduinoBLE>* BLEMIDI_ArduinoBLE::_bleMidiTransport = nullptr;
+BLEMIDI_Transport<class BLEMIDI_ArduinoBLE, DefaultSettings>* BLEMIDI_ArduinoBLE::_bleMidiTransport = nullptr;
 BLEDevice* BLEMIDI_ArduinoBLE::_central = nullptr;
 
-bool BLEMIDI_ArduinoBLE::begin(const char* deviceName, BLEMIDI_Transport<class BLEMIDI_ArduinoBLE>* bleMidiTransport)
+bool BLEMIDI_ArduinoBLE::begin(const char* deviceName, BLEMIDI_Transport<class BLEMIDI_ArduinoBLE, DefaultSettings>* bleMidiTransport)
 {
 	_bleMidiTransport = bleMidiTransport;
 
@@ -217,6 +217,12 @@ bool BLEMIDI_ArduinoBLE::begin(const char* deviceName, BLEMIDI_Transport<class B
     return true;
 }
 
+ /*! \brief Create an instance for nRF52 named <DeviceName>
+ */
+#define BLEMIDI_CREATE_CUSTOM_INSTANCE(DeviceName, Name, CustomSettings) \
+BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ArduinoBLE, CustomSettings> BLE##Name(DeviceName); \
+MIDI_NAMESPACE::MidiInterface<BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ArduinoBLE, CustomSettings>, BLEMIDI_NAMESPACE::MySettings> Name((BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ArduinoBLE, CustomSettings> &)BLE##Name);
+
  /*! \brief Create an instance for nRF52 named <DeviceName>
  */
 #define BLEMIDI_CREATE_INSTANCE(DeviceName, Name) \
diff --git a/src/hardware/BLEMIDI_ESP32.h b/src/hardware/BLEMIDI_ESP32.h
index f67a419..6aba70d 100644
--- a/src/hardware/BLEMIDI_ESP32.h
+++ b/src/hardware/BLEMIDI_ESP32.h
@@ -15,7 +15,7 @@ private:
     BLEAdvertising *_advertising = nullptr;
     BLECharacteristic *_characteristic = nullptr;
 
-    BLEMIDI_Transport<class BLEMIDI_ESP32> *_bleMidiTransport = nullptr;
+    BLEMIDI_Transport<class BLEMIDI_ESP32, DefaultSettings> *_bleMidiTransport = nullptr;
 
     friend class MyServerCallbacks;
     friend class MyCharacteristicCallbacks;
@@ -28,7 +28,7 @@ public:
     {
     }
 
-    bool begin(const char *, BLEMIDI_Transport<class BLEMIDI_ESP32> *);
+    bool begin(const char *, BLEMIDI_Transport<class BLEMIDI_ESP32, DefaultSettings> *);
 
     void end()
     {
@@ -121,7 +121,7 @@ protected:
     }
 };
 
-bool BLEMIDI_ESP32::begin(const char *deviceName, BLEMIDI_Transport<class BLEMIDI_ESP32> *bleMidiTransport)
+bool BLEMIDI_ESP32::begin(const char *deviceName, BLEMIDI_Transport<class BLEMIDI_ESP32, DefaultSettings> *bleMidiTransport)
 {
     _bleMidiTransport = bleMidiTransport;
 
@@ -161,11 +161,15 @@ bool BLEMIDI_ESP32::begin(const char *deviceName, BLEMIDI_Transport<class BLEMID
     _advertising->setAppearance(0x00);
     _advertising->start();
 
-    Serial.println("begin");
-
     return true;
 }
 
+/*! \brief Create an instance for ESP32 named <DeviceName>
+ */
+#define BLEMIDI_CREATE_CUSTOM_INSTANCE(DeviceName, Name, CustomSettings)                                                 \
+    BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ESP32, CustomSettings> BLE##Name(DeviceName); \
+    MIDI_NAMESPACE::MidiInterface<BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ESP32, CustomSettings>, BLEMIDI_NAMESPACE::MySettings> Name((BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ESP32, CustomSettings> &)BLE##Name);
+
 /*! \brief Create an instance for ESP32 named <DeviceName>
  */
 #define BLEMIDI_CREATE_INSTANCE(DeviceName, Name)                                                 \
diff --git a/src/hardware/BLEMIDI_ESP32_NimBLE.h b/src/hardware/BLEMIDI_ESP32_NimBLE.h
index 75f894d..4684250 100644
--- a/src/hardware/BLEMIDI_ESP32_NimBLE.h
+++ b/src/hardware/BLEMIDI_ESP32_NimBLE.h
@@ -12,7 +12,7 @@ private:
     BLEAdvertising *_advertising = nullptr;
     BLECharacteristic *_characteristic = nullptr;
 
-    BLEMIDI_Transport<class BLEMIDI_ESP32_NimBLE> *_bleMidiTransport = nullptr;
+    BLEMIDI_Transport<class BLEMIDI_ESP32_NimBLE, DefaultSettings> *_bleMidiTransport = nullptr;
 
     friend class MyServerCallbacks;
     friend class MyCharacteristicCallbacks;
@@ -25,7 +25,7 @@ public:
     {
     }
 
-    bool begin(const char *, BLEMIDI_Transport<class BLEMIDI_ESP32_NimBLE> *);
+    bool begin(const char *, BLEMIDI_Transport<class BLEMIDI_ESP32_NimBLE, DefaultSettings> *);
 
     void end()
     {
@@ -114,7 +114,7 @@ protected:
     }
 };
 
-bool BLEMIDI_ESP32_NimBLE::begin(const char *deviceName, BLEMIDI_Transport<class BLEMIDI_ESP32_NimBLE> *bleMidiTransport)
+bool BLEMIDI_ESP32_NimBLE::begin(const char *deviceName, BLEMIDI_Transport<class BLEMIDI_ESP32_NimBLE, DefaultSettings> *bleMidiTransport)
 {
     _bleMidiTransport = bleMidiTransport;
 
@@ -156,6 +156,12 @@ bool BLEMIDI_ESP32_NimBLE::begin(const char *deviceName, BLEMIDI_Transport<class
     return true;
 }
 
+/*! \brief Create an instance for ESP32 named <DeviceName>
+ */
+#define BLEMIDI_CREATE_CUSTOM_INSTANCE(DeviceName, Name, CustomSettings)                                                        \
+    BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ESP32_NimBLE, CustomSettings> BLE##Name(DeviceName); \
+    MIDI_NAMESPACE::MidiInterface<BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ESP32_NimBLE, CustomSettings>, BLEMIDI_NAMESPACE::MySettings> Name((BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_ESP32_NimBLE, CustomSettings> &)BLE##Name);
+
 /*! \brief Create an instance for ESP32 named <DeviceName>
  */
 #define BLEMIDI_CREATE_INSTANCE(DeviceName, Name)                                                        \
diff --git a/src/hardware/BLEMIDI_nRF52.h b/src/hardware/BLEMIDI_nRF52.h
index 2210897..4be4a31 100644
--- a/src/hardware/BLEMIDI_nRF52.h
+++ b/src/hardware/BLEMIDI_nRF52.h
@@ -12,7 +12,7 @@ private:
 //    BLEDis bledis;
 //    BLEMidi blemidi;
 
-    BLEMIDI_NAMESPACE::BLEMIDI_Transport<class BLEMIDI_nRF52>* _bleMidiTransport;
+    BLEMIDI_NAMESPACE::BLEMIDI_Transport<class BLEMIDI_nRF52, DefaultSettings>* _bleMidiTransport;
 
     friend class MyServerCallbacks; 
     friend class MyCharacteristicCallbacks; 
@@ -22,7 +22,7 @@ public:
     {
     }
     
-	bool begin(const char*, BLEMIDI_NAMESPACE::BLEMIDI_Transport<class BLEMIDI_nRF52>*);
+	bool begin(const char*, BLEMIDI_NAMESPACE::BLEMIDI_Transport<class BLEMIDI_nRF52, DefaultSettings>*);
     
     void end() 
     {
@@ -61,7 +61,7 @@ protected:
 	}
 };
 
-bool BLEMIDI_nRF52::begin(const char* deviceName, BLEMIDI_NAMESPACE::BLEMIDI_Transport<class BLEMIDI_nRF52>* bleMidiTransport)
+bool BLEMIDI_nRF52::begin(const char* deviceName, BLEMIDI_NAMESPACE::BLEMIDI_Transport<class BLEMIDI_nRF52, DefaultSettings>* bleMidiTransport)
 {
 	_bleMidiTransport = bleMidiTransport;
 
@@ -114,6 +114,12 @@ bool BLEMIDI_nRF52::begin(const char* deviceName, BLEMIDI_NAMESPACE::BLEMIDI_Tra
     return true;
 }
 
+ /*! \brief Create an instance for nRF52 named <DeviceName>
+ */
+#define BLEMIDI_CREATE_CUSTOM_INSTANCE(DeviceName, Name, CustomSettings) \
+BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_nRF52, CustomSettings> BLE##Name(DeviceName); \
+MIDI_NAMESPACE::MidiInterface<BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_nRF52, CustomSettings>, BLEMIDI_NAMESPACE::MySettings> Name((BLEMIDI_NAMESPACE::BLEMIDI_Transport<BLEMIDI_NAMESPACE::BLEMIDI_nRF52, CustomSettings> &)BLE##Name);
+
  /*! \brief Create an instance for nRF52 named <DeviceName>
  */
 #define BLEMIDI_CREATE_INSTANCE(DeviceName, Name) \