diff --git a/ports/atmel-samd/boards/bradanlanestudio_coin_m0/board.c b/ports/atmel-samd/boards/bradanlanestudio_coin_m0/board.c
new file mode 100644
index 000000000000..b44a1ae51e04
--- /dev/null
+++ b/ports/atmel-samd/boards/bradanlanestudio_coin_m0/board.c
@@ -0,0 +1,9 @@
+// This file is part of the CircuitPython project: https://circuitpython.org
+//
+// SPDX-FileCopyrightText: Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+#include "supervisor/board.h"
+
+// Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/atmel-samd/boards/bradanlanestudio_coin_m0/mpconfigboard.h b/ports/atmel-samd/boards/bradanlanestudio_coin_m0/mpconfigboard.h
new file mode 100644
index 000000000000..cdd5c96aeba2
--- /dev/null
+++ b/ports/atmel-samd/boards/bradanlanestudio_coin_m0/mpconfigboard.h
@@ -0,0 +1,24 @@
+// This file is part of the CircuitPython project: https://circuitpython.org
+//
+// SPDX-FileCopyrightText: Copyright (c) 2024 Bradán Lane STUDIO
+//
+// SPDX-License-Identifier: MIT
+
+#pragma once
+
+#define MICROPY_HW_BOARD_NAME "Bradán Lane STUDIO Coin M0"
+#define MICROPY_HW_MCU_NAME "samd21g18"
+
+#define MICROPY_HW_LED_STATUS   (&pin_PA17)
+
+#define SPI_FLASH_MOSI_PIN          &pin_PB22
+#define SPI_FLASH_MISO_PIN          &pin_PB03
+#define SPI_FLASH_SCK_PIN           &pin_PB23
+#define SPI_FLASH_CS_PIN            &pin_PA27
+
+// USB is always used internally so skip the pin objects for it.
+#define IGNORE_PIN_PA24     1   // USB_D+
+#define IGNORE_PIN_PA25     1   // USB_D-
+
+#define IGNORE_PIN_PA30     1   // SWCLK
+#define IGNORE_PIN_PA31     1   // SWDIO
diff --git a/ports/atmel-samd/boards/bradanlanestudio_coin_m0/mpconfigboard.mk b/ports/atmel-samd/boards/bradanlanestudio_coin_m0/mpconfigboard.mk
new file mode 100644
index 000000000000..33165c8cfc5d
--- /dev/null
+++ b/ports/atmel-samd/boards/bradanlanestudio_coin_m0/mpconfigboard.mk
@@ -0,0 +1,45 @@
+# This file is part of the CircuitPython project: https://circuitpython.org
+#
+# SPDX-FileCopyrightText: Copyright (c) 2024 Bradán Lane STUDIO
+#
+# SPDX-License-Identifier: MIT
+
+# TODO new VID:PID not yet approved via pidcodes.github.com
+USB_VID = 0x1209
+USB_PID = 0x5687
+
+USB_PRODUCT = "Coin M0"
+USB_MANUFACTURER = "Bradán Lane STUDIO"
+
+CHIP_VARIANT = SAMD21G18A
+CHIP_FAMILY = samd21
+
+#CIRCUITPY_BUILD_EXTENSIONS = bin,uf2
+
+SPI_FLASH_FILESYSTEM = 1
+EXTERNAL_FLASH_DEVICES = "W25Q32JVxQ"
+LONGINT_IMPL = NONE
+
+# the M0 Coin has limited functionality and many modules can be eliminated
+
+# there may be more modules which are of no used but will require further digging
+
+# Disable modules that are unusable on this special-purpose board.
+
+CIRCUITPY_FULL_BUILD = 0
+
+CIRCUITPY_AUDIOIO = 1
+CIRCUITPY_DISPLAYIO = 0
+CIRCUITPY_FRAMEBUFFERIO = 0
+CIRCUITPY_ONEWIREIO = 0
+CIRCUITPY_PULSEIO = 0
+CIRCUITPY_RGBMATRIX = 0
+CIRCUITPY_ROTARYIO = 0
+CIRCUITPY_RTC = 0
+CIRCUITPY_USB_HID = 1
+CIRCUITPY_USB_MIDI = 0
+
+
+# Include these Python libraries in firmware.
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_HID
+FROZEN_MPY_DIRS += $(TOP)/frozen/Adafruit_CircuitPython_NeoPixel
diff --git a/ports/atmel-samd/boards/bradanlanestudio_coin_m0/pins.c b/ports/atmel-samd/boards/bradanlanestudio_coin_m0/pins.c
new file mode 100644
index 000000000000..7e74918ee465
--- /dev/null
+++ b/ports/atmel-samd/boards/bradanlanestudio_coin_m0/pins.c
@@ -0,0 +1,35 @@
+// This file is part of the CircuitPython project: https://circuitpython.org
+//
+// SPDX-FileCopyrightText: Copyright (c) 2017 Scott Shawcroft for Adafruit Industries
+//
+// SPDX-License-Identifier: MIT
+
+#include "shared-bindings/board/__init__.h"
+
+static const mp_rom_map_elem_t board_module_globals_table[] = {
+    CIRCUITPYTHON_BOARD_DICT_STANDARD_ITEMS
+
+    // Neopixels
+    { MP_ROM_QSTR(MP_QSTR_D9), MP_ROM_PTR(&pin_PA07) },
+    { MP_ROM_QSTR(MP_QSTR_NEOPIXEL), MP_ROM_PTR(&pin_PA07) },
+
+    // discrete LEDs
+    { MP_ROM_QSTR(MP_QSTR_D10), MP_ROM_PTR(&pin_PA18) },
+    { MP_ROM_QSTR(MP_QSTR_D11), MP_ROM_PTR(&pin_PA16) },
+    { MP_ROM_QSTR(MP_QSTR_D12), MP_ROM_PTR(&pin_PA19) },
+
+    // on-board LED
+    { MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pin_PA17) },
+    { MP_ROM_QSTR(MP_QSTR_D13), MP_ROM_PTR(&pin_PA17) },
+
+    { MP_ROM_QSTR(MP_QSTR_A0), MP_ROM_PTR(&pin_PA02) }, // Analog only; no PWM
+    { MP_ROM_QSTR(MP_QSTR_SPEAKER), MP_ROM_PTR(&pin_PA02) },
+
+    { MP_ROM_QSTR(MP_QSTR_A1), MP_ROM_PTR(&pin_PB08) },
+    { MP_ROM_QSTR(MP_QSTR_TOUCH2), MP_ROM_PTR(&pin_PB08) },
+    { MP_ROM_QSTR(MP_QSTR_A2), MP_ROM_PTR(&pin_PB09) },
+    { MP_ROM_QSTR(MP_QSTR_TOUCH1), MP_ROM_PTR(&pin_PB09) },
+    { MP_ROM_QSTR(MP_QSTR_A5), MP_ROM_PTR(&pin_PB02) },
+    { MP_ROM_QSTR(MP_QSTR_TOUCH3), MP_ROM_PTR(&pin_PB02) },
+};
+MP_DEFINE_CONST_DICT(board_module_globals, board_module_globals_table);