diff --git a/ports/stm32f4/boards/feather_stm32f405_express/board.c b/ports/stm32f4/boards/feather_stm32f405_express/board.c
index 4421970eef..82b0c506ed 100644
--- a/ports/stm32f4/boards/feather_stm32f405_express/board.c
+++ b/ports/stm32f4/boards/feather_stm32f405_express/board.c
@@ -25,12 +25,13 @@
  */
 
 #include "boards/board.h"
+#include "mpconfigboard.h"
 
 void board_init(void) {
 }
 
 bool board_requests_safe_mode(void) {
-  return false;
+    return false;
 }
 
 void reset_board(void) {
diff --git a/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h b/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h
index d795342dd8..67ddc885ae 100644
--- a/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h
+++ b/ports/stm32f4/boards/feather_stm32f405_express/mpconfigboard.h
@@ -3,8 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2016 Glenn Ruben Bakke
- * Copyright (c) 2018 Dan Halbert for Adafruit Industries
+ * Copyright (c) 2019 Lucian Copeland for Adafruit Industries
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -41,3 +40,13 @@
 #define SPI_FLASH_MISO_PIN          &pin_PB04
 #define SPI_FLASH_SCK_PIN           &pin_PB03
 #define SPI_FLASH_CS_PIN            &pin_PA15
+
+#define DEFAULT_I2C_BUS_SCL (&pin_PB06)
+#define DEFAULT_I2C_BUS_SDA (&pin_PB07)
+
+#define DEFAULT_SPI_BUS_SCK (&pin_PB13)
+#define DEFAULT_SPI_BUS_MOSI (&pin_PB15)
+#define DEFAULT_SPI_BUS_MISO (&pin_PB14)
+
+#define DEFAULT_UART_BUS_RX (&pin_PB11)
+#define DEFAULT_UART_BUS_TX (&pin_PB10)
diff --git a/ports/stm32f4/boards/feather_stm32f405_express/pins.c b/ports/stm32f4/boards/feather_stm32f405_express/pins.c
index 518ab6d2a0..4aa1f362ad 100644
--- a/ports/stm32f4/boards/feather_stm32f405_express/pins.c
+++ b/ports/stm32f4/boards/feather_stm32f405_express/pins.c
@@ -25,5 +25,9 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
 
     { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_PB10) },
     { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_PB11) },
+
+    { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
+    { MP_ROM_QSTR(MP_QSTR_SPI), MP_ROM_PTR(&board_spi_obj) },
+    { MP_ROM_QSTR(MP_QSTR_UART), MP_ROM_PTR(&board_uart_obj) },
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);
diff --git a/ports/stm32f4/boards/pyboard_v11/mpconfigboard.h b/ports/stm32f4/boards/pyboard_v11/mpconfigboard.h
index e8441d665c..9d8f72f77c 100644
--- a/ports/stm32f4/boards/pyboard_v11/mpconfigboard.h
+++ b/ports/stm32f4/boards/pyboard_v11/mpconfigboard.h
@@ -3,8 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2016 Glenn Ruben Bakke
- * Copyright (c) 2018 Dan Halbert for Adafruit Industries
+ * Copyright (c) 2019 Lucian Copeland for Adafruit Industries
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -34,4 +33,7 @@
 #define FLASH_PAGE_SIZE             (0x4000)
 
 #define AUTORESET_DELAY_MS 500
-#define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000)
\ No newline at end of file
+#define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000)
+
+#define DEFAULT_I2C_BUS_SCL (&pin_PB06)
+#define DEFAULT_I2C_BUS_SDA (&pin_PB07)
diff --git a/ports/stm32f4/boards/pyboard_v11/pins.c b/ports/stm32f4/boards/pyboard_v11/pins.c
index ccbb58ab9e..8783dfcf10 100644
--- a/ports/stm32f4/boards/pyboard_v11/pins.c
+++ b/ports/stm32f4/boards/pyboard_v11/pins.c
@@ -46,5 +46,7 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
 
     { MP_ROM_QSTR(MP_QSTR_SCL), MP_ROM_PTR(&pin_PB06) },
     { MP_ROM_QSTR(MP_QSTR_SDA), MP_ROM_PTR(&pin_PB07) },
+
+    { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);
diff --git a/ports/stm32f4/boards/stm32f411ve_discovery/mpconfigboard.h b/ports/stm32f4/boards/stm32f411ve_discovery/mpconfigboard.h
index d5491fe362..d7898ba0b8 100644
--- a/ports/stm32f4/boards/stm32f411ve_discovery/mpconfigboard.h
+++ b/ports/stm32f4/boards/stm32f411ve_discovery/mpconfigboard.h
@@ -3,8 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2016 Glenn Ruben Bakke
- * Copyright (c) 2018 Dan Halbert for Adafruit Industries
+ * Copyright (c) 2019 Lucian Copeland for Adafruit Industries
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
diff --git a/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.h b/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.h
index ebee98f89f..45505dee28 100644
--- a/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.h
+++ b/ports/stm32f4/boards/stm32f412zg_discovery/mpconfigboard.h
@@ -3,8 +3,7 @@
  *
  * The MIT License (MIT)
  *
- * Copyright (c) 2016 Glenn Ruben Bakke
- * Copyright (c) 2018 Dan Halbert for Adafruit Industries
+ * Copyright (c) 2019 Lucian Copeland for Adafruit Industries
  *
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -36,3 +35,5 @@
 #define AUTORESET_DELAY_MS 500
 #define BOARD_FLASH_SIZE (FLASH_SIZE - 0x4000)
 
+#define DEFAULT_I2C_BUS_SCL (&pin_PB10)
+#define DEFAULT_I2C_BUS_SDA (&pin_PB09)
diff --git a/ports/stm32f4/boards/stm32f412zg_discovery/pins.c b/ports/stm32f4/boards/stm32f412zg_discovery/pins.c
index a0b477a470..b92f212700 100644
--- a/ports/stm32f4/boards/stm32f412zg_discovery/pins.c
+++ b/ports/stm32f4/boards/stm32f412zg_discovery/pins.c
@@ -88,5 +88,7 @@ STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
   { MP_ROM_QSTR(MP_QSTR_LED2), MP_ROM_PTR(&pin_PE01) },
   { MP_ROM_QSTR(MP_QSTR_LED3), MP_ROM_PTR(&pin_PE02) },
   { MP_ROM_QSTR(MP_QSTR_LED4), MP_ROM_PTR(&pin_PE03) },
+
+  { MP_ROM_QSTR(MP_QSTR_I2C), MP_ROM_PTR(&board_i2c_obj) },
 };
 MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);