diff --git a/Makefile b/Makefile
index 372828b..2a89a97 100644
--- a/Makefile
+++ b/Makefile
@@ -115,6 +115,7 @@ C_SOURCE_FILES += $(SRC_PATH)/boards.c
 C_SOURCE_FILES += $(SRC_PATH)/flash_nrf5x.c
 C_SOURCE_FILES += $(SRC_PATH)/dfu_ble_svc.c
 C_SOURCE_FILES += $(SRC_PATH)/dfu_init.c
+C_SOURCE_FILES += $(SRC_PATH)/pinconfig.c
 
 # nrfx
 C_SOURCE_FILES += $(NRFX_PATH)/drivers/src/nrfx_power.c
diff --git a/src/boards/arcade_feather_nrf52840_express/board.h b/src/boards/arcade_feather_nrf52840_express/board.h
new file mode 100644
index 0000000..9f5adba
--- /dev/null
+++ b/src/boards/arcade_feather_nrf52840_express/board.h
@@ -0,0 +1,143 @@
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Ha Thach 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
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#ifndef _FEATHER_NRF52840_H
+#define _FEATHER_NRF52840_H
+
+#define _PINNUM(port, pin)    ((port)*32 + (pin))
+
+/*------------------------------------------------------------------*/
+/* LED
+ *------------------------------------------------------------------*/
+#define LEDS_NUMBER           2
+#define LED_PRIMARY_PIN       _PINNUM(1, 15)
+#define LED_SECONDARY_PIN     _PINNUM(1, 10)
+#define LED_STATE_ON          1
+
+#define LED_NEOPIXEL           _PINNUM(0, 16)
+#define NEOPIXELS_NUMBER      1
+#define BOARD_RGB_BRIGHTNESS  0x040404
+
+/*------------------------------------------------------------------*/
+/* BUTTON
+ *------------------------------------------------------------------*/
+#define BUTTONS_NUMBER        2
+#define BUTTON_1              _PINNUM(1, 02)
+#define BUTTON_2              _PINNUM(0, 10)
+#define BUTTON_PULL           NRF_GPIO_PIN_PULLUP
+
+/*------------------------------------------------------------------*/
+/* UART (only used by nRF52832)
+ *------------------------------------------------------------------*/
+#define RX_PIN_NUMBER         8
+#define TX_PIN_NUMBER         6
+#define CTS_PIN_NUMBER        0
+#define RTS_PIN_NUMBER        0
+#define HWFC                  false
+
+//--------------------------------------------------------------------+
+// BLE OTA
+//--------------------------------------------------------------------+
+#define BLEDIS_MANUFACTURER   "Adafruit Industries"
+#define BLEDIS_MODEL          "Feather nRF52840 Express"
+
+//--------------------------------------------------------------------+
+// USB
+//--------------------------------------------------------------------+
+#define USB_DESC_VID           0x239A
+#define USB_DESC_UF2_PID       0x0029
+#define USB_DESC_CDC_ONLY_PID  0x002A
+
+//------------- UF2 -------------//
+#define UF2_PRODUCT_NAME      "Adafruit Feather nRF52840 Express"
+#define UF2_VOLUME_LABEL      "ARCADE-N4"
+#define UF2_BOARD_ID          "nRF52840-Feather-revD"
+#define UF2_INDEX_URL         "https://www.adafruit.com/product/4062"
+
+#ifdef DEFINE_BOOTLOADER_CONFIG
+#define BOOTLOADER_CONFIG_PRESENT 1
+__attribute__((used, section(".bootloaderConfig")))
+const uint32_t bootloaderConfig[] = {
+    /* CF2 START */
+    513675505, 539130489, // magic
+    49, 100,  // used entries, total entries
+    4, 0x18, // PIN_BTN_A = PIN_RX
+    5, 0xa, // PIN_BTN_B = PIN_D2
+    13, 0x29, // PIN_LED = PIN_D13
+    18, 0xf, // PIN_MISO = PA15
+    19, 0xd, // PIN_MOSI = PA13
+    20, 0x23, // PIN_NEOPIXEL = PB03
+    21, 0x18, // PIN_RX = PA24
+    23, 0xe, // PIN_SCK = PA14
+    24, 0xb, // PIN_SCL = PA11
+    25, 0xc, // PIN_SDA = PA12
+    28, 0x19, // PIN_TX = PA25
+    32, 0xe, // PIN_DISPLAY_SCK = PIN_SCK
+    34, 0xd, // PIN_DISPLAY_MOSI = PIN_MOSI
+    35, 0x1e, // PIN_DISPLAY_CS = PIN_A2
+    36, 0x1c, // PIN_DISPLAY_DC = PIN_A3
+    37, 0xa0, // DISPLAY_WIDTH = 160
+    38, 0x80, // DISPLAY_HEIGHT = 128
+    39, 0x80, // DISPLAY_CFG0 = 0x80
+    40, 0x603, // DISPLAY_CFG1 = 0x603
+    41, 0x20, // DISPLAY_CFG2 = 0x20
+    43, 0x2, // PIN_DISPLAY_RST = PIN_A4
+    44, 0x3, // PIN_DISPLAY_BL = PIN_A5
+    47, 0x6, // PIN_BTN_LEFT = PIN_D11
+    48, 0x1a, // PIN_BTN_RIGHT = PIN_D9
+    49, 0x1b, // PIN_BTN_UP = PIN_D10
+    50, 0x7, // PIN_BTN_DOWN = PIN_D6
+    51, 0x8, // PIN_BTN_MENU = PIN_D12
+    56, 0x2a, // PIN_LED2 = PB10
+    60, 0x19, // PIN_JACK_TX = PIN_TX
+    100, 0x4, // PIN_A0 = PA04
+    101, 0x5, // PIN_A1 = PA05
+    102, 0x1e, // PIN_A2 = PA30
+    103, 0x1c, // PIN_A3 = PA28
+    104, 0x2, // PIN_A4 = PA02
+    105, 0x3, // PIN_A5 = PA03
+    152, 0xa, // PIN_D2 = PA10
+    155, 0x28, // PIN_D5 = PB08
+    156, 0x7, // PIN_D6 = PA07
+    159, 0x1a, // PIN_D9 = PA26
+    160, 0x1b, // PIN_D10 = PA27
+    161, 0x6, // PIN_D11 = PA06
+    162, 0x8, // PIN_D12 = PA08
+    163, 0x29, // PIN_D13 = PB09
+    200, 0x1, // NUM_NEOPIXELS = 1
+    204, 0x100000, // FLASH_BYTES = 0x100000
+    205, 0x40000, // RAM_BYTES = 0x40000
+    208, 0xd7688ea1, // BOOTLOADER_BOARD_ID = 0xd7688ea1
+    209, 0xada52840, // UF2_FAMILY = 0xada52840
+    210, 0x20, // PINS_PORT_SIZE = PA_32
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+    0, 0, 0, 0, 0, 0,
+    /* CF2 END */
+};
+#endif
+
+#endif // _FEATHER_NRF52840_H
+
diff --git a/src/boards/arcade_feather_nrf52840_express/board.mk b/src/boards/arcade_feather_nrf52840_express/board.mk
new file mode 100644
index 0000000..9d29ac6
--- /dev/null
+++ b/src/boards/arcade_feather_nrf52840_express/board.mk
@@ -0,0 +1 @@
+MCU_SUB_VARIANT = nrf52840
diff --git a/src/linker/nrf52840_s140_v6.ld b/src/linker/nrf52840_s140_v6.ld
index bddaa26..cbc2286 100644
--- a/src/linker/nrf52840_s140_v6.ld
+++ b/src/linker/nrf52840_s140_v6.ld
@@ -11,7 +11,9 @@ MEMORY
    *  those values do not match. The check is performed in main.c, see
    *  APP_ERROR_CHECK_BOOL(*((uint32_t *)NRF_UICR_BOOT_START_ADDRESS) == BOOTLOADER_REGION_START);
    */
-  FLASH (rx) : ORIGIN = 0xF4000, LENGTH = 0xFE000-0xF4000 /* 40 KB */
+  FLASH (rx) : ORIGIN = 0xF4000, LENGTH = 0xFE000-0xF4000-1024 /* 39 KB */
+
+  BOOTLOADER_CONFIG (r): ORIGIN = 0xFE000 - 1024, LENGTH = 1024
 
   /** Location of mbr params page in flash. */
   MBR_PARAMS_PAGE (rw) : ORIGIN = 0xFE000, LENGTH = 0x1000
@@ -50,6 +52,11 @@ SECTIONS
     PROVIDE( __stop_fs_data = .);
   } = 0
 
+  .bootloaderConfig :
+  {
+    KEEP(*(.bootloaderConfig))
+  } > BOOTLOADER_CONFIG
+
   /* Place the bootloader settings page in flash. */
   .bootloaderSettings(NOLOAD) :
   {
diff --git a/src/pinconfig.c b/src/pinconfig.c
new file mode 100644
index 0000000..a4202d9
--- /dev/null
+++ b/src/pinconfig.c
@@ -0,0 +1,6 @@
+#define DEFINE_BOOTLOADER_CONFIG 1
+#include "boards.h"
+
+#if defined(BOOTLOADER_CONFIG_PRESENT) && BOOTLOADER_CONFIG_PRESENT
+// nothing yet
+#endif