diff --git a/src/helpers/NRF52Board.cpp b/src/helpers/NRF52Board.cpp
index ee50fe4c..c0d58314 100644
--- a/src/helpers/NRF52Board.cpp
+++ b/src/helpers/NRF52Board.cpp
@@ -1,6 +1,39 @@
 #if defined(NRF52_PLATFORM)
 #include "NRF52Board.h"
 
+#include <bluefruit.h>
+
+static BLEDfu bledfu;
+
+static void connect_callback(uint16_t conn_handle) {
+  (void)conn_handle;
+  MESH_DEBUG_PRINTLN("BLE client connected");
+}
+
+static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
+  (void)conn_handle;
+  (void)reason;
+
+  MESH_DEBUG_PRINTLN("BLE client disconnected");
+}
+
+void NRF52Board::begin() {
+  startup_reason = BD_STARTUP_NORMAL;
+}
+
+void NRF52BoardDCDC::begin() {
+  NRF52Board::begin();
+
+  // Enable DC/DC converter for improved power efficiency
+  uint8_t sd_enabled = 0;
+  sd_softdevice_is_enabled(&sd_enabled);
+  if (sd_enabled) {
+    sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
+  } else {
+    NRF_POWER->DCDCEN = 1;
+  }
+}
+
 // Temperature from NRF52 MCU
 float NRF52Board::getMCUTemperature() {
   NRF_TEMP->TASKS_START = 1; // Start temperature measurement
@@ -20,4 +53,52 @@ float NRF52Board::getMCUTemperature() {
 
   return temp * 0.25f; // Convert to *C
 }
+
+bool NRF52BoardOTA::startOTAUpdate(const char *id, char reply[]) {
+  // Config the peripheral connection with maximum bandwidth
+  // more SRAM required by SoftDevice
+  // Note: All config***() function must be called before begin()
+  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
+  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
+
+  Bluefruit.begin(1, 0);
+  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
+  Bluefruit.setTxPower(4);
+  // Set the BLE device name
+  Bluefruit.setName(ota_name);
+
+  Bluefruit.Periph.setConnectCallback(connect_callback);
+  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
+
+  // To be consistent OTA DFU should be added first if it exists
+  bledfu.begin();
+
+  // Set up and start advertising
+  // Advertising packet
+  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
+  Bluefruit.Advertising.addTxPower();
+  Bluefruit.Advertising.addName();
+
+  /* Start Advertising
+    - Enable auto advertising if disconnected
+    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
+    - Timeout for fast mode is 30 seconds
+    - Start(timeout) with timeout = 0 will advertise forever (until connected)
+
+    For recommended advertising interval
+    https://developer.apple.com/library/content/qa/qa1931/_index.html
+  */
+  Bluefruit.Advertising.restartOnDisconnect(true);
+  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
+  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
+  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
+
+  uint8_t mac_addr[6];
+  memset(mac_addr, 0, sizeof(mac_addr));
+  Bluefruit.getAddr(mac_addr);
+  sprintf(reply, "OK - mac: %02X:%02X:%02X:%02X:%02X:%02X", mac_addr[5], mac_addr[4], mac_addr[3],
+          mac_addr[2], mac_addr[1], mac_addr[0]);
+
+  return true;
+}
 #endif
diff --git a/src/helpers/NRF52Board.h b/src/helpers/NRF52Board.h
index 1a6f879f..0d6c0a43 100644
--- a/src/helpers/NRF52Board.h
+++ b/src/helpers/NRF52Board.h
@@ -6,7 +6,34 @@
 #if defined(NRF52_PLATFORM)
 
 class NRF52Board : public mesh::MainBoard {
+protected:
+  uint8_t startup_reason;
+
 public:
-  float getMCUTemperature() override;
+  virtual void begin();
+  virtual uint8_t getStartupReason() const override { return startup_reason; }
+  virtual float getMCUTemperature() override;
+  virtual void reboot() override { NVIC_SystemReset(); }
+};
+
+/*
+ * The NRF52 has an internal DC/DC regulator that allows increased efficiency
+ * compared to the LDO regulator. For being able to use it, the module/board
+ * needs to have the required inductors and and capacitors populated. If the
+ * hardware requirements are met, this subclass can be used to enable the DC/DC
+ * regulator.
+ */
+class NRF52BoardDCDC : virtual public NRF52Board {
+public:
+  virtual void begin() override;
+};
+
+class NRF52BoardOTA : virtual public NRF52Board {
+private:
+  char *ota_name;
+
+public:
+  NRF52BoardOTA(char *name) : ota_name(name) {}
+  virtual bool startOTAUpdate(const char *id, char reply[]) override;
 };
 #endif
\ No newline at end of file
diff --git a/variants/heltec_mesh_solar/MeshSolarBoard.cpp b/variants/heltec_mesh_solar/MeshSolarBoard.cpp
index 54929cd1..bc955fb5 100644
--- a/variants/heltec_mesh_solar/MeshSolarBoard.cpp
+++ b/variants/heltec_mesh_solar/MeshSolarBoard.cpp
@@ -1,28 +1,10 @@
 #include <Arduino.h>
-#include "MeshSolarBoard.h"
-
-#include <bluefruit.h>
 #include <Wire.h>
 
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle)
-{
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason)
-{
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
+#include "MeshSolarBoard.h"
 
 void MeshSolarBoard::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
 
   meshSolarStart();
 
@@ -32,46 +14,3 @@ void MeshSolarBoard::begin() {
 
   Wire.begin();
 }
-
-bool MeshSolarBoard::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("MESH_SOLAR_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
diff --git a/variants/heltec_mesh_solar/MeshSolarBoard.h b/variants/heltec_mesh_solar/MeshSolarBoard.h
index 688a8e88..69437c87 100644
--- a/variants/heltec_mesh_solar/MeshSolarBoard.h
+++ b/variants/heltec_mesh_solar/MeshSolarBoard.h
@@ -20,14 +20,10 @@
 #define SX126X_DIO2_AS_RF_SWITCH  true
 #define SX126X_DIO3_TCXO_VOLTAGE   1.8
 
-
-class MeshSolarBoard : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class MeshSolarBoard : public NRF52BoardOTA {
 public:
+  MeshSolarBoard() : NRF52BoardOTA("MESH_SOLAR_OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
   uint16_t getBattMilliVolts() override {
     return meshSolarGetBattVoltage();
@@ -36,10 +32,4 @@ public:
   const char* getManufacturerName() const override {
     return "Heltec Mesh Solar";
   }
-
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
diff --git a/variants/heltec_t114/T114Board.cpp b/variants/heltec_t114/T114Board.cpp
index f46a1a84..4995e7de 100644
--- a/variants/heltec_t114/T114Board.cpp
+++ b/variants/heltec_t114/T114Board.cpp
@@ -2,25 +2,9 @@
 
 #include <Arduino.h>
 #include <Wire.h>
-#include <bluefruit.h>
-
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
 
 void T114Board::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
   NRF_POWER->DCDCEN = 1;
 
   pinMode(PIN_VBAT_READ, INPUT);
@@ -39,47 +23,4 @@ void T114Board::begin() {
   pinMode(SX126X_POWER_EN, OUTPUT);
   digitalWrite(SX126X_POWER_EN, HIGH);
   delay(10); // give sx1262 some time to power up
-}
-
-bool T114Board::startOTAUpdate(const char *id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("T114_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
+}
\ No newline at end of file
diff --git a/variants/heltec_t114/T114Board.h b/variants/heltec_t114/T114Board.h
index bd9287e2..74e26455 100644
--- a/variants/heltec_t114/T114Board.h
+++ b/variants/heltec_t114/T114Board.h
@@ -9,13 +9,10 @@
 #define  PIN_BAT_CTL      6
 #define  MV_LSB   (3000.0F / 4096.0F) // 12-bit ADC with 3.0V input range
 
-class T114Board : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class T114Board : public NRF52BoardOTA {
 public:
+    T114Board() : NRF52BoardOTA("T114_OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
 #if defined(P_LORA_TX_LED)
   void onBeforeTransmit() override {
@@ -44,10 +41,6 @@ public:
     return "Heltec T114";
   }
 
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
   void powerOff() override {
     #ifdef LED_PIN
     digitalWrite(LED_PIN, HIGH);
@@ -58,6 +51,4 @@ public:
     #endif
     sd_power_system_off();
   }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
diff --git a/variants/ikoka_handheld_nrf/IkokaNrf52Board.cpp b/variants/ikoka_handheld_nrf/IkokaNrf52Board.cpp
index 44940b8f..f1d9f17d 100644
--- a/variants/ikoka_handheld_nrf/IkokaNrf52Board.cpp
+++ b/variants/ikoka_handheld_nrf/IkokaNrf52Board.cpp
@@ -2,27 +2,11 @@
 
 #include <Arduino.h>
 #include <Wire.h>
-#include <bluefruit.h>
 
 #include "IkokaNrf52Board.h"
 
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
-
 void IkokaNrf52Board::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
 
   // ensure we have pull ups on the screen i2c, this isn't always available
   // in hardware and it should only be 20k ohms. Disable the pullups if we
@@ -53,48 +37,4 @@ void IkokaNrf52Board::begin() {
   delay(10); // give sx1262 some time to power up
 }
 
-bool IkokaNrf52Board::startOTAUpdate(const char *id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("XIAO_NRF52_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-
-  return true;
-}
-
 #endif
diff --git a/variants/ikoka_handheld_nrf/IkokaNrf52Board.h b/variants/ikoka_handheld_nrf/IkokaNrf52Board.h
index 9dfc3833..acb58b3c 100644
--- a/variants/ikoka_handheld_nrf/IkokaNrf52Board.h
+++ b/variants/ikoka_handheld_nrf/IkokaNrf52Board.h
@@ -1,17 +1,15 @@
 #pragma once
 
-#include <MeshCore.h>
 #include <Arduino.h>
+#include <MeshCore.h>
+#include <helpers/NRF52Board.h>
 
 #ifdef IKOKA_NRF52
 
-class IkokaNrf52Board : public mesh::MainBoard {
-protected:
-  uint8_t startup_reason;
-
+class IkokaNrf52Board : public NRF52BoardOTA {
 public:
+  IkokaNrf52Board() : NRF52BoardOTA("XIAO_NRF52_OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
 #if defined(P_LORA_TX_LED)
   void onBeforeTransmit() override {
@@ -41,12 +39,6 @@ public:
   const char* getManufacturerName() const override {
     return "Ikoka Handheld E22 30dBm (Xiao_nrf52)";
   }
-
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
 
 #endif
diff --git a/variants/ikoka_nano_nrf/IkokaNanoNRFBoard.cpp b/variants/ikoka_nano_nrf/IkokaNanoNRFBoard.cpp
index ee799692..b963b2f4 100644
--- a/variants/ikoka_nano_nrf/IkokaNanoNRFBoard.cpp
+++ b/variants/ikoka_nano_nrf/IkokaNanoNRFBoard.cpp
@@ -1,28 +1,12 @@
 #ifdef XIAO_NRF52
 
 #include <Arduino.h>
-#include "IkokaNanoNRFBoard.h"
-
-#include <bluefruit.h>
 #include <Wire.h>
 
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
+#include "IkokaNanoNRFBoard.h"
 
 void IkokaNanoNRFBoard::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
 
   pinMode(PIN_VBAT, INPUT);
   pinMode(VBAT_ENABLE, OUTPUT);
@@ -48,47 +32,4 @@ void IkokaNanoNRFBoard::begin() {
   delay(10);   // give sx1262 some time to power up
 }
 
-bool IkokaNanoNRFBoard::startOTAUpdate(const char *id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("XIAO_NRF52_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
-
 #endif
diff --git a/variants/ikoka_nano_nrf/IkokaNanoNRFBoard.h b/variants/ikoka_nano_nrf/IkokaNanoNRFBoard.h
index ac306977..c7e96921 100644
--- a/variants/ikoka_nano_nrf/IkokaNanoNRFBoard.h
+++ b/variants/ikoka_nano_nrf/IkokaNanoNRFBoard.h
@@ -6,13 +6,10 @@
 
 #ifdef XIAO_NRF52
 
-class IkokaNanoNRFBoard : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class IkokaNanoNRFBoard : public NRF52BoardOTA {
 public:
+  IkokaNanoNRFBoard() : NRF52BoardOTA("XIAO_NRF52_OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
 #if defined(P_LORA_TX_LED)
   void onBeforeTransmit() override {
@@ -50,12 +47,6 @@ public:
   const char *getManufacturerName() const override {
     return MANUFACTURER_STRING;
   }
-
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
-  bool startOTAUpdate(const char *id, char reply[]) override;
 };
 
 #endif
diff --git a/variants/ikoka_stick_nrf/IkokaStickNRFBoard.cpp b/variants/ikoka_stick_nrf/IkokaStickNRFBoard.cpp
index 6b660383..1c416039 100644
--- a/variants/ikoka_stick_nrf/IkokaStickNRFBoard.cpp
+++ b/variants/ikoka_stick_nrf/IkokaStickNRFBoard.cpp
@@ -1,28 +1,12 @@
 #ifdef XIAO_NRF52
 
 #include <Arduino.h>
-#include "IkokaStickNRFBoard.h"
-
-#include <bluefruit.h>
 #include <Wire.h>
 
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
+#include "IkokaStickNRFBoard.h"
 
 void IkokaStickNRFBoard::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
 
   pinMode(PIN_VBAT, INPUT);
   pinMode(VBAT_ENABLE, OUTPUT);
@@ -48,47 +32,4 @@ void IkokaStickNRFBoard::begin() {
   delay(10);   // give sx1262 some time to power up
 }
 
-bool IkokaStickNRFBoard::startOTAUpdate(const char *id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("XIAO_NRF52_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
-
 #endif
diff --git a/variants/ikoka_stick_nrf/IkokaStickNRFBoard.h b/variants/ikoka_stick_nrf/IkokaStickNRFBoard.h
index 8f817ff1..00a26029 100644
--- a/variants/ikoka_stick_nrf/IkokaStickNRFBoard.h
+++ b/variants/ikoka_stick_nrf/IkokaStickNRFBoard.h
@@ -6,13 +6,10 @@
 
 #ifdef XIAO_NRF52
 
-class IkokaStickNRFBoard : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class IkokaStickNRFBoard : public NRF52BoardOTA {
 public:
+  IkokaStickNRFBoard() : NRF52BoardOTA("XIAO_NRF52_OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
 #if defined(P_LORA_TX_LED)
   void onBeforeTransmit() override {
@@ -50,12 +47,6 @@ public:
   const char *getManufacturerName() const override {
     return MANUFACTURER_STRING;
   }
-
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
-  bool startOTAUpdate(const char *id, char reply[]) override;
 };
 
 #endif
diff --git a/variants/keepteen_lt1/KeepteenLT1Board.cpp b/variants/keepteen_lt1/KeepteenLT1Board.cpp
index 46bff1fc..2f1fa5f9 100644
--- a/variants/keepteen_lt1/KeepteenLT1Board.cpp
+++ b/variants/keepteen_lt1/KeepteenLT1Board.cpp
@@ -1,14 +1,10 @@
 #include <Arduino.h>
-#include "KeepteenLT1Board.h"
-
-#include <bluefruit.h>
 #include <Wire.h>
 
-static BLEDfu bledfu;
+#include "KeepteenLT1Board.h"
 
 void KeepteenLT1Board::begin() {    
-    // for future use, sub-classes SHOULD call this from their begin()
-    startup_reason = BD_STARTUP_NORMAL;
+    NRF52Board::begin();
     btn_prev_state = HIGH;
   
     pinMode(PIN_VBAT_READ, INPUT);
@@ -18,58 +14,4 @@ void KeepteenLT1Board::begin() {
     #endif
     
     Wire.begin();
-}
-
-static void connect_callback(uint16_t conn_handle) {
-    (void)conn_handle;
-    MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-    (void)conn_handle;
-    (void)reason;
-    MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
-
-bool KeepteenLT1Board::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("KeepteenLT1_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
+}
\ No newline at end of file
diff --git a/variants/keepteen_lt1/KeepteenLT1Board.h b/variants/keepteen_lt1/KeepteenLT1Board.h
index e8c444ed..a9844c90 100644
--- a/variants/keepteen_lt1/KeepteenLT1Board.h
+++ b/variants/keepteen_lt1/KeepteenLT1Board.h
@@ -4,16 +4,14 @@
 #include <Arduino.h>
 #include <helpers/NRF52Board.h>
 
-class KeepteenLT1Board : public NRF52Board {
+class KeepteenLT1Board : public NRF52BoardOTA {
 protected:
-  uint8_t startup_reason;
   uint8_t btn_prev_state;
 
 public:
+  KeepteenLT1Board() : NRF52BoardOTA("KeepteenLT1_OTA") {}
   void begin();
 
-  uint8_t getStartupReason() const override { return startup_reason; }
-
   #define BATTERY_SAMPLES 8
 
   uint16_t getBattMilliVolts() override {
@@ -40,13 +38,7 @@ public:
   }
 #endif
 
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-  
   void powerOff() override {
     sd_power_system_off();
   }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
diff --git a/variants/lilygo_techo/TechoBoard.cpp b/variants/lilygo_techo/TechoBoard.cpp
index dee14688..81d3d0c9 100644
--- a/variants/lilygo_techo/TechoBoard.cpp
+++ b/variants/lilygo_techo/TechoBoard.cpp
@@ -1,28 +1,12 @@
 #include <Arduino.h>
+#include <Wire.h>
+
 #include "TechoBoard.h"
 
 #ifdef LILYGO_TECHO
 
-#include <bluefruit.h>
-#include <Wire.h>
-
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
-
 void TechoBoard::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
 
   Wire.begin();
 
@@ -44,47 +28,4 @@ uint16_t TechoBoard::getBattMilliVolts() {
   // divider into account (providing the actual LIPO voltage)
   return (uint16_t)((float)adcvalue * REAL_VBAT_MV_PER_LSB);
 }
-
-bool TechoBoard::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("TECHO_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
 #endif
diff --git a/variants/lilygo_techo/TechoBoard.h b/variants/lilygo_techo/TechoBoard.h
index 91dfb5ab..c9bdc229 100644
--- a/variants/lilygo_techo/TechoBoard.h
+++ b/variants/lilygo_techo/TechoBoard.h
@@ -13,19 +13,11 @@
 #define PIN_VBAT_READ     (4)
 #define REAL_VBAT_MV_PER_LSB (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)
 
-class TechoBoard : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class TechoBoard : public NRF52BoardOTA {
 public:
-
+  TechoBoard() : NRF52BoardOTA("TECHO_OTA") {}
   void begin();
   uint16_t getBattMilliVolts() override;
-  bool startOTAUpdate(const char* id, char reply[]) override;
-
-  uint8_t getStartupReason() const override {
-    return startup_reason;
-  }
 
   const char* getManufacturerName() const override {
     return "LilyGo T-Echo";
@@ -49,8 +41,4 @@ public:
     #endif
     sd_power_system_off();
   }
-
-  void reboot() override {
-    NVIC_SystemReset();
-  }
 };
diff --git a/variants/lilygo_techo_lite/TechoBoard.cpp b/variants/lilygo_techo_lite/TechoBoard.cpp
index dee14688..81d3d0c9 100644
--- a/variants/lilygo_techo_lite/TechoBoard.cpp
+++ b/variants/lilygo_techo_lite/TechoBoard.cpp
@@ -1,28 +1,12 @@
 #include <Arduino.h>
+#include <Wire.h>
+
 #include "TechoBoard.h"
 
 #ifdef LILYGO_TECHO
 
-#include <bluefruit.h>
-#include <Wire.h>
-
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
-
 void TechoBoard::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
 
   Wire.begin();
 
@@ -44,47 +28,4 @@ uint16_t TechoBoard::getBattMilliVolts() {
   // divider into account (providing the actual LIPO voltage)
   return (uint16_t)((float)adcvalue * REAL_VBAT_MV_PER_LSB);
 }
-
-bool TechoBoard::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("TECHO_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
 #endif
diff --git a/variants/lilygo_techo_lite/TechoBoard.h b/variants/lilygo_techo_lite/TechoBoard.h
index 79b5610c..8e6974bd 100644
--- a/variants/lilygo_techo_lite/TechoBoard.h
+++ b/variants/lilygo_techo_lite/TechoBoard.h
@@ -13,19 +13,11 @@
 #define PIN_VBAT_READ     (4)
 #define REAL_VBAT_MV_PER_LSB (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)
 
-class TechoBoard : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class TechoBoard : public NRF52BoardOTA {
 public:
-
+  TechoBoard() : NRF52BoardOTA("TECHO_OTA") {}
   void begin();
   uint16_t getBattMilliVolts() override;
-  bool startOTAUpdate(const char* id, char reply[]) override;
-
-  uint8_t getStartupReason() const override {
-    return startup_reason;
-  }
 
   const char* getManufacturerName() const override {
     return "LilyGo T-Echo";
@@ -49,8 +41,4 @@ public:
     #endif
     sd_power_system_off();
   }
-
-  void reboot() override {
-    NVIC_SystemReset();
-  }
 };
diff --git a/variants/mesh_pocket/MeshPocket.cpp b/variants/mesh_pocket/MeshPocket.cpp
index 0d0e8993..0c53121f 100644
--- a/variants/mesh_pocket/MeshPocket.cpp
+++ b/variants/mesh_pocket/MeshPocket.cpp
@@ -1,72 +1,12 @@
 #include <Arduino.h>
-#include "MeshPocket.h"
-#include <bluefruit.h>
 #include <Wire.h>
 
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle)
-{
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason)
-{
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
+#include "MeshPocket.h"
 
 void HeltecMeshPocket::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
   Serial.begin(115200);
   pinMode(PIN_VBAT_READ, INPUT);
 
   pinMode(PIN_USER_BTN, INPUT);
 }
-
-bool HeltecMeshPocket::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("MESH_POCKET_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
diff --git a/variants/mesh_pocket/MeshPocket.h b/variants/mesh_pocket/MeshPocket.h
index 876e3810..db65c99b 100644
--- a/variants/mesh_pocket/MeshPocket.h
+++ b/variants/mesh_pocket/MeshPocket.h
@@ -9,15 +9,10 @@
 #define  PIN_BAT_CTL      34
 #define  MV_LSB   (3000.0F / 4096.0F) // 12-bit ADC with 3.0V input range
 
-class HeltecMeshPocket : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class HeltecMeshPocket : public NRF52BoardOTA {
 public:
+  HeltecMeshPocket() : NRF52BoardOTA("MESH_POCKET_OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
-
-
 
   uint16_t getBattMilliVolts() override {
     int adcvalue = 0;
@@ -38,13 +33,7 @@ public:
     return "Heltec MeshPocket";
   }
 
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
   void powerOff() override {
     sd_power_system_off();
   }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
diff --git a/variants/minewsemi_me25ls01/MinewsemiME25LS01Board.cpp b/variants/minewsemi_me25ls01/MinewsemiME25LS01Board.cpp
index 561ed504..0267185c 100644
--- a/variants/minewsemi_me25ls01/MinewsemiME25LS01Board.cpp
+++ b/variants/minewsemi_me25ls01/MinewsemiME25LS01Board.cpp
@@ -1,12 +1,10 @@
 #include <Arduino.h>
-#include "MinewsemiME25LS01Board.h"
 #include <Wire.h>
 
-#include <bluefruit.h>
+#include "MinewsemiME25LS01Board.h"
 
 void MinewsemiME25LS01Board::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
   btn_prev_state = HIGH;
   
   pinMode(PIN_VBAT_READ, INPUT);
@@ -28,62 +26,4 @@ void MinewsemiME25LS01Board::begin() {
 #endif
 
   delay(10);   // give sx1262 some time to power up
-}
-
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
-
-
-bool MinewsemiME25LS01Board::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("Minewsemi_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
 }
\ No newline at end of file
diff --git a/variants/minewsemi_me25ls01/MinewsemiME25LS01Board.h b/variants/minewsemi_me25ls01/MinewsemiME25LS01Board.h
index 18aa9e8a..805f9dfa 100644
--- a/variants/minewsemi_me25ls01/MinewsemiME25LS01Board.h
+++ b/variants/minewsemi_me25ls01/MinewsemiME25LS01Board.h
@@ -20,13 +20,12 @@
 #define  PIN_VBAT_READ BATTERY_PIN
 #define  ADC_MULTIPLIER   (1.815f) // dependent on voltage divider resistors. TODO: more accurate battery tracking
 
-
-class MinewsemiME25LS01Board : public NRF52Board {
+class MinewsemiME25LS01Board : public NRF52BoardOTA {
 protected:
-  uint8_t startup_reason;
   uint8_t btn_prev_state;
 
 public:
+  MinewsemiME25LS01Board() : NRF52BoardOTA("Minewsemi_OTA") {}
   void begin();
 
 #define BATTERY_SAMPLES 8
@@ -42,8 +41,6 @@ public:
     return (ADC_MULTIPLIER * raw);
   }
 
-  uint8_t getStartupReason() const override { return startup_reason; }
-
   const char* getManufacturerName() const override {
     return "Minewsemi";
   }
@@ -79,11 +76,4 @@ public:
     digitalWrite(P_LORA_TX_LED, LOW); // turn TX LED off
   }
 #endif
-
-
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
\ No newline at end of file
diff --git a/variants/nano_g2_ultra/nano-g2.cpp b/variants/nano_g2_ultra/nano-g2.cpp
index 9a278287..6a749aab 100644
--- a/variants/nano_g2_ultra/nano-g2.cpp
+++ b/variants/nano_g2_ultra/nano-g2.cpp
@@ -24,8 +24,7 @@ static void disconnect_callback(uint16_t conn_handle, uint8_t reason)
 
 void NanoG2Ultra::begin()
 {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
 
   // set user button
   pinMode(PIN_BUTTON1, INPUT);
diff --git a/variants/nano_g2_ultra/nano-g2.h b/variants/nano_g2_ultra/nano-g2.h
index 7ed1c74b..6961fc86 100644
--- a/variants/nano_g2_ultra/nano-g2.h
+++ b/variants/nano_g2_ultra/nano-g2.h
@@ -36,20 +36,13 @@
 #define REAL_VBAT_MV_PER_LSB     (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)
 
 class NanoG2Ultra : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
 public:
   void begin();
   uint16_t getBattMilliVolts() override;
   bool startOTAUpdate(const char *id, char reply[]) override;
 
-  uint8_t getStartupReason() const override { return startup_reason; }
-
   const char *getManufacturerName() const override { return "Nano G2 Ultra"; }
 
-  void reboot() override { NVIC_SystemReset(); }
-
   void powerOff() override {
     // put GPS chip to sleep
     digitalWrite(PIN_GPS_STANDBY, LOW);
diff --git a/variants/promicro/PromicroBoard.cpp b/variants/promicro/PromicroBoard.cpp
index b923e16e..7011521b 100644
--- a/variants/promicro/PromicroBoard.cpp
+++ b/variants/promicro/PromicroBoard.cpp
@@ -1,14 +1,10 @@
 #include <Arduino.h>
-#include "PromicroBoard.h"
-
-#include <bluefruit.h>
 #include <Wire.h>
 
-static BLEDfu bledfu;
+#include "PromicroBoard.h"
 
 void PromicroBoard::begin() {    
-    // for future use, sub-classes SHOULD call this from their begin()
-    startup_reason = BD_STARTUP_NORMAL;
+    NRF52Board::begin();
     btn_prev_state = HIGH;
   
     pinMode(PIN_VBAT_READ, INPUT);
@@ -26,58 +22,4 @@ void PromicroBoard::begin() {
     pinMode(SX126X_POWER_EN, OUTPUT);
     digitalWrite(SX126X_POWER_EN, HIGH);
     delay(10);   // give sx1262 some time to power up
-}
-
-static void connect_callback(uint16_t conn_handle) {
-    (void)conn_handle;
-    MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-    (void)conn_handle;
-    (void)reason;
-    MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
-
-bool PromicroBoard::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("ProMicro_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
+}
\ No newline at end of file
diff --git a/variants/promicro/PromicroBoard.h b/variants/promicro/PromicroBoard.h
index 916afefd..c23ed1c9 100644
--- a/variants/promicro/PromicroBoard.h
+++ b/variants/promicro/PromicroBoard.h
@@ -20,17 +20,15 @@
 #define  PIN_VBAT_READ 17
 #define  ADC_MULTIPLIER   (1.815f) // dependent on voltage divider resistors. TODO: more accurate battery tracking
 
-class PromicroBoard : public NRF52Board {
+class PromicroBoard : public NRF52BoardOTA {
 protected:
-  uint8_t startup_reason;
   uint8_t btn_prev_state;
   float adc_mult = ADC_MULTIPLIER;
 
 public:
+  PromicroBoard() : NRF52BoardOTA("ProMicro_OTA") {}
   void begin();
 
-  uint8_t getStartupReason() const override { return startup_reason; }
-
   #define BATTERY_SAMPLES 8
 
   uint16_t getBattMilliVolts() override {
@@ -75,13 +73,7 @@ public:
       return 0;
   }
 
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-  
   void powerOff() override {
     sd_power_system_off();
   }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
diff --git a/variants/rak4631/RAK4631Board.cpp b/variants/rak4631/RAK4631Board.cpp
index 97a96602..65c54711 100644
--- a/variants/rak4631/RAK4631Board.cpp
+++ b/variants/rak4631/RAK4631Board.cpp
@@ -1,26 +1,10 @@
 #include <Arduino.h>
-#include "RAK4631Board.h"
-
-#include <bluefruit.h>
 #include <Wire.h>
 
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
+#include "RAK4631Board.h"
 
 void RAK4631Board::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52BoardDCDC::begin();
   pinMode(PIN_VBAT_READ, INPUT);
 #ifdef PIN_USER_BTN
   pinMode(PIN_USER_BTN, INPUT_PULLUP);
@@ -39,52 +23,4 @@ void RAK4631Board::begin() {
   pinMode(SX126X_POWER_EN, OUTPUT);
   digitalWrite(SX126X_POWER_EN, HIGH);
   delay(10);   // give sx1262 some time to power up
-}
-
-bool RAK4631Board::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("RAK4631_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  uint8_t mac_addr[6];
-  memset(mac_addr, 0, sizeof(mac_addr));
-  Bluefruit.getAddr(mac_addr);
-  sprintf(reply, "OK - mac: %02X:%02X:%02X:%02X:%02X:%02X", 
-      mac_addr[5], mac_addr[4], mac_addr[3], mac_addr[2], mac_addr[1], mac_addr[0]);
-
-  return true;
-}
+}
\ No newline at end of file
diff --git a/variants/rak4631/RAK4631Board.h b/variants/rak4631/RAK4631Board.h
index 2040bf41..a181256b 100644
--- a/variants/rak4631/RAK4631Board.h
+++ b/variants/rak4631/RAK4631Board.h
@@ -29,13 +29,10 @@
 #define  PIN_VBAT_READ    5
 #define  ADC_MULTIPLIER   (3 * 1.73 * 1.187 * 1000)
 
-class RAK4631Board : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class RAK4631Board : public NRF52BoardDCDC, public NRF52BoardOTA {
 public:
+  RAK4631Board() : NRF52BoardOTA("RAK4631_OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
   #define BATTERY_SAMPLES 8
 
@@ -54,10 +51,4 @@ public:
   const char* getManufacturerName() const override {
     return "RAK 4631";
   }
-
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
diff --git a/variants/rak_wismesh_tag/RAKWismeshTagBoard.cpp b/variants/rak_wismesh_tag/RAKWismeshTagBoard.cpp
index 68638f0d..7eab4bc9 100644
--- a/variants/rak_wismesh_tag/RAKWismeshTagBoard.cpp
+++ b/variants/rak_wismesh_tag/RAKWismeshTagBoard.cpp
@@ -1,35 +1,10 @@
 #include <Arduino.h>
-#include "RAKWismeshTagBoard.h"
-
-#include <bluefruit.h>
 #include <Wire.h>
 
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
+#include "RAKWismeshTagBoard.h"
 
 void RAKWismeshTagBoard::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
-  
-  // Enable DC/DC converter for improved power efficiency
-  uint8_t sd_enabled = 0;
-  sd_softdevice_is_enabled(&sd_enabled);
-  if (sd_enabled) {
-    sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
-  } else {
-    NRF_POWER->DCDCEN = 1;
-  }
+  NRF52BoardDCDC::begin();
 
   pinMode(PIN_VBAT_READ, INPUT);
   pinMode(PIN_USER_BTN, INPUT_PULLUP);
@@ -40,52 +15,4 @@ void RAKWismeshTagBoard::begin() {
   pinMode(SX126X_POWER_EN, OUTPUT);
   digitalWrite(SX126X_POWER_EN, HIGH);
   delay(10);   // give sx1262 some time to power up
-}
-
-bool RAKWismeshTagBoard::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("WISMESHTAG_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  uint8_t mac_addr[6];
-  memset(mac_addr, 0, sizeof(mac_addr));
-  Bluefruit.getAddr(mac_addr);
-  sprintf(reply, "OK - mac: %02X:%02X:%02X:%02X:%02X:%02X",
-      mac_addr[5], mac_addr[4], mac_addr[3], mac_addr[2], mac_addr[1], mac_addr[0]);
-
-  return true;
-}
+}
\ No newline at end of file
diff --git a/variants/rak_wismesh_tag/RAKWismeshTagBoard.h b/variants/rak_wismesh_tag/RAKWismeshTagBoard.h
index fe554fe6..9aa457d2 100644
--- a/variants/rak_wismesh_tag/RAKWismeshTagBoard.h
+++ b/variants/rak_wismesh_tag/RAKWismeshTagBoard.h
@@ -8,13 +8,10 @@
 #define  PIN_VBAT_READ    5
 #define  ADC_MULTIPLIER   (3 * 1.73 * 1.187 * 1000)
 
-class RAKWismeshTagBoard : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class RAKWismeshTagBoard : public NRF52BoardDCDC, public NRF52BoardOTA {
 public:
+  RAKWismeshTagBoard() : NRF52BoardOTA("WISMESHTAG_OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
 #if defined(P_LORA_TX_LED) && defined(LED_STATE_ON)
   void onBeforeTransmit() override {
@@ -43,12 +40,6 @@ public:
     return "RAK WisMesh Tag";
   }
 
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
-
   void powerOff() override {
     #ifdef BUZZER_EN
         digitalWrite(BUZZER_EN, LOW);
diff --git a/variants/sensecap_solar/SenseCapSolarBoard.cpp b/variants/sensecap_solar/SenseCapSolarBoard.cpp
index d6c044d1..c0883035 100644
--- a/variants/sensecap_solar/SenseCapSolarBoard.cpp
+++ b/variants/sensecap_solar/SenseCapSolarBoard.cpp
@@ -1,26 +1,10 @@
 #include <Arduino.h>
-#include "SenseCapSolarBoard.h"
-
-#include <bluefruit.h>
 #include <Wire.h>
 
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
+#include "SenseCapSolarBoard.h"
 
 void SenseCapSolarBoard::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
 
 #if defined(PIN_WIRE_SDA) && defined(PIN_WIRE_SCL)
   Wire.setPins(PIN_WIRE_SDA, PIN_WIRE_SCL);
@@ -34,48 +18,4 @@ void SenseCapSolarBoard::begin() {
 #endif
 
   delay(10);   // give sx1262 some time to power up
-}
-
-bool SenseCapSolarBoard::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("SENSECAP_SOLAR_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-
-  return true;
-}
+}
\ No newline at end of file
diff --git a/variants/sensecap_solar/SenseCapSolarBoard.h b/variants/sensecap_solar/SenseCapSolarBoard.h
index 999c7783..dfe007bf 100644
--- a/variants/sensecap_solar/SenseCapSolarBoard.h
+++ b/variants/sensecap_solar/SenseCapSolarBoard.h
@@ -4,13 +4,10 @@
 #include <Arduino.h>
 #include <helpers/NRF52Board.h>
 
-class SenseCapSolarBoard : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class SenseCapSolarBoard : public NRF52BoardOTA {
 public:
+  SenseCapSolarBoard() : NRF52BoardOTA("SENSECAP_SOLAR_OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
 #if defined(P_LORA_TX_LED)
   void onBeforeTransmit() override {
@@ -34,10 +31,4 @@ public:
   const char* getManufacturerName() const override {
     return "Seeed SenseCap Solar";
   }
-
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
diff --git a/variants/t1000-e/T1000eBoard.cpp b/variants/t1000-e/T1000eBoard.cpp
index a41abd92..0d390f79 100644
--- a/variants/t1000-e/T1000eBoard.cpp
+++ b/variants/t1000-e/T1000eBoard.cpp
@@ -1,23 +1,12 @@
 #include <Arduino.h>
-#include "T1000eBoard.h"
 #include <Wire.h>
 
-#include <bluefruit.h>
+#include "T1000eBoard.h"
 
 void T1000eBoard::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52BoardDCDC::begin();
   btn_prev_state = HIGH;
 
-  // Enable DC/DC converter for improved power efficiency
-  uint8_t sd_enabled = 0;
-  sd_softdevice_is_enabled(&sd_enabled);
-  if (sd_enabled) {
-    sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
-  } else {
-    NRF_POWER->DCDCEN = 1;
-  }
-
 #ifdef BUTTON_PIN
   pinMode(BATTERY_PIN, INPUT);
   pinMode(BUTTON_PIN, INPUT);
@@ -31,64 +20,4 @@ void T1000eBoard::begin() {
   Wire.begin();
 
   delay(10);   // give sx1262 some time to power up
-}
-
-#if 0
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
-
-
-bool TrackerT1000eBoard::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("T1000E_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
-#endif
\ No newline at end of file
+}
\ No newline at end of file
diff --git a/variants/t1000-e/T1000eBoard.h b/variants/t1000-e/T1000eBoard.h
index d04de5a3..32f54bb3 100644
--- a/variants/t1000-e/T1000eBoard.h
+++ b/variants/t1000-e/T1000eBoard.h
@@ -4,9 +4,8 @@
 #include <Arduino.h>
 #include <helpers/NRF52Board.h>
 
-class T1000eBoard : public NRF52Board {
+class T1000eBoard : public NRF52BoardDCDC {
 protected:
-  uint8_t startup_reason;
   uint8_t btn_prev_state;
 
 public:
@@ -34,8 +33,6 @@ public:
   #endif
   }
 
-  uint8_t getStartupReason() const override { return startup_reason; }
-
   const char* getManufacturerName() const override {
     return "Seeed Tracker T1000-e";
   }
@@ -93,9 +90,5 @@ public:
     sd_power_system_off();
   }
 
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
 //  bool startOTAUpdate(const char* id, char reply[]) override;
 };
\ No newline at end of file
diff --git a/variants/thinknode_m1/ThinkNodeM1Board.cpp b/variants/thinknode_m1/ThinkNodeM1Board.cpp
index 12dd7362..45449baf 100644
--- a/variants/thinknode_m1/ThinkNodeM1Board.cpp
+++ b/variants/thinknode_m1/ThinkNodeM1Board.cpp
@@ -1,28 +1,12 @@
-#include "ThinkNodeM1Board.h"
 #include <Arduino.h>
+#include <Wire.h>
+
+#include "ThinkNodeM1Board.h"
 
 #ifdef THINKNODE_M1
 
-#include <Wire.h>
-#include <bluefruit.h>
-
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
-
 void ThinkNodeM1Board::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52Board::begin();
 
   Wire.begin();
 
@@ -49,47 +33,4 @@ uint16_t ThinkNodeM1Board::getBattMilliVolts() {
   // divider into account (providing the actual LIPO voltage)
   return (uint16_t)((float)adcvalue * REAL_VBAT_MV_PER_LSB);
 }
-
-bool ThinkNodeM1Board::startOTAUpdate(const char *id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("THINKNODE_M1_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-  return true;
-}
 #endif
diff --git a/variants/thinknode_m1/ThinkNodeM1Board.h b/variants/thinknode_m1/ThinkNodeM1Board.h
index 5920b809..500a0265 100644
--- a/variants/thinknode_m1/ThinkNodeM1Board.h
+++ b/variants/thinknode_m1/ThinkNodeM1Board.h
@@ -13,19 +13,11 @@
 #define PIN_VBAT_READ     (4)
 #define REAL_VBAT_MV_PER_LSB (VBAT_DIVIDER_COMP * VBAT_MV_PER_LSB)
 
-class ThinkNodeM1Board : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class ThinkNodeM1Board : public NRF52BoardOTA {
 public:
-
+  ThinkNodeM1Board() : NRF52BoardOTA("THINKNODE_M1_OTA") {}
   void begin();
   uint16_t getBattMilliVolts() override;
-  bool startOTAUpdate(const char* id, char reply[]) override;
-
-  uint8_t getStartupReason() const override {
-    return startup_reason;
-  }
 
   #if defined(P_LORA_TX_LED)
   void onBeforeTransmit() override {
@@ -40,10 +32,6 @@ public:
     return "Elecrow ThinkNode-M1";
   }
 
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
   void powerOff() override {
 
     // turn off all leds, sd_power_system_off will not do this for us
diff --git a/variants/wio-tracker-l1/WioTrackerL1Board.cpp b/variants/wio-tracker-l1/WioTrackerL1Board.cpp
index 34d9a874..4153714e 100644
--- a/variants/wio-tracker-l1/WioTrackerL1Board.cpp
+++ b/variants/wio-tracker-l1/WioTrackerL1Board.cpp
@@ -1,37 +1,12 @@
 #include <Arduino.h>
-#include "WioTrackerL1Board.h"
-
-#include <bluefruit.h>
 #include <Wire.h>
 
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
+#include "WioTrackerL1Board.h"
 
 void WioTrackerL1Board::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
+  NRF52BoardDCDC::begin();
   btn_prev_state = HIGH;
 
-  // Enable DC/DC converter for improved power efficiency
-  uint8_t sd_enabled = 0;
-  sd_softdevice_is_enabled(&sd_enabled);
-  if (sd_enabled) {
-    sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
-  } else {
-    NRF_POWER->DCDCEN = 1;
-  }
-
   pinMode(PIN_VBAT_READ, INPUT); // VBAT ADC input
   // Set all button pins to INPUT_PULLUP
   pinMode(PIN_BUTTON1, INPUT_PULLUP);
@@ -55,51 +30,3 @@ void WioTrackerL1Board::begin() {
 
   delay(10);   // give sx1262 some time to power up
 }
-
-bool WioTrackerL1Board::startOTAUpdate(const char* id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("WioTrackerL1 OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  uint8_t mac_addr[6];
-  memset(mac_addr, 0, sizeof(mac_addr));
-  Bluefruit.getAddr(mac_addr);
-  sprintf(reply, "OK - mac: %02X:%02X:%02X:%02X:%02X:%02X", 
-      mac_addr[5], mac_addr[4], mac_addr[3], mac_addr[2], mac_addr[1], mac_addr[0]);
-
-  return true;
-}
diff --git a/variants/wio-tracker-l1/WioTrackerL1Board.h b/variants/wio-tracker-l1/WioTrackerL1Board.h
index 6797f629..bfd87d39 100644
--- a/variants/wio-tracker-l1/WioTrackerL1Board.h
+++ b/variants/wio-tracker-l1/WioTrackerL1Board.h
@@ -4,14 +4,13 @@
 #include <Arduino.h>
 #include <helpers/NRF52Board.h>
 
-class WioTrackerL1Board : public NRF52Board {
+class WioTrackerL1Board : public NRF52BoardDCDC, public NRF52BoardOTA {
 protected:
-  uint8_t startup_reason;
   uint8_t btn_prev_state;
 
 public:
+  WioTrackerL1Board() : NRF52BoardOTA("WioTrackerL1 OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
 #if defined(P_LORA_TX_LED)
   void onBeforeTransmit() override {
@@ -35,13 +34,7 @@ public:
     return "Seeed Wio Tracker L1";
   }
 
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
   void powerOff() override {
     sd_power_system_off();
   }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
diff --git a/variants/wio_wm1110/WioWM1110Board.cpp b/variants/wio_wm1110/WioWM1110Board.cpp
index 153d476c..d0ab9785 100644
--- a/variants/wio_wm1110/WioWM1110Board.cpp
+++ b/variants/wio_wm1110/WioWM1110Board.cpp
@@ -21,16 +21,7 @@ static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
 }
 
 void WioWM1110Board::begin() {
-  startup_reason = BD_STARTUP_NORMAL;
-
-  // Enable DC/DC converter for improved power efficiency
-  uint8_t sd_enabled = 0;
-  sd_softdevice_is_enabled(&sd_enabled);
-  if (sd_enabled) {
-    sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
-  } else {
-    NRF_POWER->DCDCEN = 1;
-  }
+  NRF52BoardDCDC::begin();
 
   pinMode(BATTERY_PIN, INPUT);
   pinMode(LED_GREEN, OUTPUT);
diff --git a/variants/wio_wm1110/WioWM1110Board.h b/variants/wio_wm1110/WioWM1110Board.h
index ffbc4e93..697028b0 100644
--- a/variants/wio_wm1110/WioWM1110Board.h
+++ b/variants/wio_wm1110/WioWM1110Board.h
@@ -11,13 +11,9 @@
 #endif
 #define Serial Serial1
 
-class WioWM1110Board : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class WioWM1110Board : public NRF52BoardDCDC {
 public:
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
 #if defined(LED_GREEN)
   void onBeforeTransmit() override {
@@ -41,10 +37,6 @@ public:
     return "Seeed Wio WM1110";
   }
 
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
   bool startOTAUpdate(const char* id, char reply[]) override;
 
   void enableSensorPower(bool enable) {
diff --git a/variants/xiao_nrf52/XiaoNrf52Board.cpp b/variants/xiao_nrf52/XiaoNrf52Board.cpp
index f847c654..b7b60dc6 100644
--- a/variants/xiao_nrf52/XiaoNrf52Board.cpp
+++ b/variants/xiao_nrf52/XiaoNrf52Board.cpp
@@ -2,36 +2,11 @@
 
 #include <Arduino.h>
 #include <Wire.h>
-#include <bluefruit.h>
 
 #include "XiaoNrf52Board.h"
 
-static BLEDfu bledfu;
-
-static void connect_callback(uint16_t conn_handle) {
-  (void)conn_handle;
-  MESH_DEBUG_PRINTLN("BLE client connected");
-}
-
-static void disconnect_callback(uint16_t conn_handle, uint8_t reason) {
-  (void)conn_handle;
-  (void)reason;
-
-  MESH_DEBUG_PRINTLN("BLE client disconnected");
-}
-
 void XiaoNrf52Board::begin() {
-  // for future use, sub-classes SHOULD call this from their begin()
-  startup_reason = BD_STARTUP_NORMAL;
-
-  // Enable DC/DC converter for improved power efficiency
-  uint8_t sd_enabled = 0;
-  sd_softdevice_is_enabled(&sd_enabled);
-  if (sd_enabled) {
-    sd_power_dcdc_mode_set(NRF_POWER_DCDC_ENABLE);
-  } else {
-    NRF_POWER->DCDCEN = 1;
-  }
+  NRF52BoardDCDC::begin();
 
   pinMode(PIN_VBAT, INPUT);
   pinMode(VBAT_ENABLE, OUTPUT);
@@ -57,48 +32,4 @@ void XiaoNrf52Board::begin() {
   delay(10); // give sx1262 some time to power up
 }
 
-bool XiaoNrf52Board::startOTAUpdate(const char *id, char reply[]) {
-  // Config the peripheral connection with maximum bandwidth
-  // more SRAM required by SoftDevice
-  // Note: All config***() function must be called before begin()
-  Bluefruit.configPrphBandwidth(BANDWIDTH_MAX);
-  Bluefruit.configPrphConn(92, BLE_GAP_EVENT_LENGTH_MIN, 16, 16);
-
-  Bluefruit.begin(1, 0);
-  // Set max power. Accepted values are: -40, -30, -20, -16, -12, -8, -4, 0, 4
-  Bluefruit.setTxPower(4);
-  // Set the BLE device name
-  Bluefruit.setName("XIAO_NRF52_OTA");
-
-  Bluefruit.Periph.setConnectCallback(connect_callback);
-  Bluefruit.Periph.setDisconnectCallback(disconnect_callback);
-
-  // To be consistent OTA DFU should be added first if it exists
-  bledfu.begin();
-
-  // Set up and start advertising
-  // Advertising packet
-  Bluefruit.Advertising.addFlags(BLE_GAP_ADV_FLAGS_LE_ONLY_GENERAL_DISC_MODE);
-  Bluefruit.Advertising.addTxPower();
-  Bluefruit.Advertising.addName();
-
-  /* Start Advertising
-    - Enable auto advertising if disconnected
-    - Interval:  fast mode = 20 ms, slow mode = 152.5 ms
-    - Timeout for fast mode is 30 seconds
-    - Start(timeout) with timeout = 0 will advertise forever (until connected)
-
-    For recommended advertising interval
-    https://developer.apple.com/library/content/qa/qa1931/_index.html
-  */
-  Bluefruit.Advertising.restartOnDisconnect(true);
-  Bluefruit.Advertising.setInterval(32, 244); // in unit of 0.625 ms
-  Bluefruit.Advertising.setFastTimeout(30);   // number of seconds in fast mode
-  Bluefruit.Advertising.start(0);             // 0 = Don't stop advertising after n seconds
-
-  strcpy(reply, "OK - started");
-
-  return true;
-}
-
 #endif
\ No newline at end of file
diff --git a/variants/xiao_nrf52/XiaoNrf52Board.h b/variants/xiao_nrf52/XiaoNrf52Board.h
index 86be7aa4..1c46dfee 100644
--- a/variants/xiao_nrf52/XiaoNrf52Board.h
+++ b/variants/xiao_nrf52/XiaoNrf52Board.h
@@ -6,13 +6,10 @@
 
 #ifdef XIAO_NRF52
 
-class XiaoNrf52Board : public NRF52Board {
-protected:
-  uint8_t startup_reason;
-
+class XiaoNrf52Board : public NRF52BoardDCDC, public NRF52BoardOTA {
 public:
+  XiaoNrf52Board() : NRF52BoardOTA("XIAO_NRF52_OTA") {}
   void begin();
-  uint8_t getStartupReason() const override { return startup_reason; }
 
 #if defined(P_LORA_TX_LED)
   void onBeforeTransmit() override {
@@ -43,10 +40,6 @@ public:
     return "Seeed Xiao-nrf52";
   }
 
-  void reboot() override {
-    NVIC_SystemReset();
-  }
-
   void powerOff() override {
     // set led on and wait for button release before poweroff
     digitalWrite(PIN_LED, LOW);
@@ -64,8 +57,6 @@ public:
 
     sd_power_system_off();
   }
-
-  bool startOTAUpdate(const char* id, char reply[]) override;
 };
 
 #endif
\ No newline at end of file