diff --git a/ports/raspberrypi/boards/nullbits_bit_c_pro/board.c b/ports/raspberrypi/boards/nullbits_bit_c_pro/board.c
new file mode 100644
index 0000000000..331653173e
--- /dev/null
+++ b/ports/raspberrypi/boards/nullbits_bit_c_pro/board.c
@@ -0,0 +1,29 @@
+/*
+ * This file is part of the MicroPython project, http://micropython.org/
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2021 Scott Shawcroft 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.
+ */
+
+#include "supervisor/board.h"
+
+// Use the MP_WEAK supervisor/shared/board.c versions of routines not defined here.
diff --git a/ports/raspberrypi/boards/nullbits_bit_c_pro/mpconfigboard.h b/ports/raspberrypi/boards/nullbits_bit_c_pro/mpconfigboard.h
new file mode 100644
index 0000000000..d2a514006a
--- /dev/null
+++ b/ports/raspberrypi/boards/nullbits_bit_c_pro/mpconfigboard.h
@@ -0,0 +1,17 @@
+#define MICROPY_HW_BOARD_NAME "nullbits Bit-C PRO"
+#define MICROPY_HW_MCU_NAME "rp2040"
+
+#define DEFAULT_I2C_BUS_SCL (&pin_GPIO3)
+#define DEFAULT_I2C_BUS_SDA (&pin_GPIO2)
+
+#define DEFAULT_SPI_BUS_SCK (&pin_GPIO22)
+#define DEFAULT_SPI_BUS_MOSI (&pin_GPIO23)
+#define DEFAULT_SPI_BUS_MISO (&pin_GPIO20)
+
+#define DEFAULT_UART_BUS_RX (&pin_GPIO1)
+#define DEFAULT_UART_BUS_TX (&pin_GPIO0)
+
+#define CIRCUITPY_RGB_STATUS_INVERTED_PWM
+#define CIRCUITPY_RGB_STATUS_R (&pin_GPIO16)
+#define CIRCUITPY_RGB_STATUS_G (&pin_GPIO17)
+#define CIRCUITPY_RGB_STATUS_B (&pin_GPIO18)
diff --git a/ports/raspberrypi/boards/nullbits_bit_c_pro/mpconfigboard.mk b/ports/raspberrypi/boards/nullbits_bit_c_pro/mpconfigboard.mk
new file mode 100644
index 0000000000..81271d3721
--- /dev/null
+++ b/ports/raspberrypi/boards/nullbits_bit_c_pro/mpconfigboard.mk
@@ -0,0 +1,9 @@
+USB_VID = 0x2E8A
+USB_PID = 0x1048
+USB_PRODUCT = "Bit-C PRO"
+USB_MANUFACTURER = "nullbits"
+
+CHIP_VARIANT = RP2040
+CHIP_FAMILY = rp2
+
+EXTERNAL_FLASH_DEVICES = "GD25Q32C"
diff --git a/ports/raspberrypi/boards/nullbits_bit_c_pro/pico-sdk-configboard.h b/ports/raspberrypi/boards/nullbits_bit_c_pro/pico-sdk-configboard.h
new file mode 100644
index 0000000000..a41131dd22
--- /dev/null
+++ b/ports/raspberrypi/boards/nullbits_bit_c_pro/pico-sdk-configboard.h
@@ -0,0 +1,4 @@
+// Put board-specific pico-sdk definitions here. This file must exist.
+
+// Allow extra time for xosc to start.
+#define PICO_XOSC_STARTUP_DELAY_MULTIPLIER 64
diff --git a/ports/raspberrypi/boards/nullbits_bit_c_pro/pins.c b/ports/raspberrypi/boards/nullbits_bit_c_pro/pins.c
new file mode 100644
index 0000000000..ac1b1a8065
--- /dev/null
+++ b/ports/raspberrypi/boards/nullbits_bit_c_pro/pins.c
@@ -0,0 +1,49 @@
+#include "shared-bindings/board/__init__.h"
+
+STATIC const mp_rom_map_elem_t board_module_globals_table[] = {
+    CIRCUITPYTHON_BOARD_DICT_STANDARD_ITEMS
+
+    { MP_ROM_QSTR(MP_QSTR_A0),  MP_ROM_PTR(&pin_GPIO26) },
+    { MP_ROM_QSTR(MP_QSTR_D26), MP_ROM_PTR(&pin_GPIO26) },
+    { MP_ROM_QSTR(MP_QSTR_A1),  MP_ROM_PTR(&pin_GPIO27) },
+    { MP_ROM_QSTR(MP_QSTR_D27), MP_ROM_PTR(&pin_GPIO27) },
+    { MP_ROM_QSTR(MP_QSTR_A2),  MP_ROM_PTR(&pin_GPIO28) },
+    { MP_ROM_QSTR(MP_QSTR_D28), MP_ROM_PTR(&pin_GPIO28) },
+    { MP_ROM_QSTR(MP_QSTR_A3),  MP_ROM_PTR(&pin_GPIO29) },
+    { MP_ROM_QSTR(MP_QSTR_D29), MP_ROM_PTR(&pin_GPIO29) },
+
+    { MP_ROM_QSTR(MP_QSTR_SCK),  MP_ROM_PTR(&pin_GPIO22) },
+    { MP_ROM_QSTR(MP_QSTR_D22),  MP_ROM_PTR(&pin_GPIO22) },
+    { MP_ROM_QSTR(MP_QSTR_MOSI), MP_ROM_PTR(&pin_GPIO23) },
+    { MP_ROM_QSTR(MP_QSTR_D23),  MP_ROM_PTR(&pin_GPIO23) },
+    { MP_ROM_QSTR(MP_QSTR_MISO), MP_ROM_PTR(&pin_GPIO20) },
+    { MP_ROM_QSTR(MP_QSTR_D20),  MP_ROM_PTR(&pin_GPIO20) },
+
+    { MP_ROM_QSTR(MP_QSTR_D1), MP_ROM_PTR(&pin_GPIO1) },
+    { MP_ROM_QSTR(MP_QSTR_RX), MP_ROM_PTR(&pin_GPIO1) },
+    { MP_ROM_QSTR(MP_QSTR_D0), MP_ROM_PTR(&pin_GPIO0) },
+    { MP_ROM_QSTR(MP_QSTR_TX), MP_ROM_PTR(&pin_GPIO0) },
+
+    { MP_ROM_QSTR(MP_QSTR_D2), MP_ROM_PTR(&pin_GPIO2) },
+    { MP_ROM_QSTR(MP_QSTR_D3), MP_ROM_PTR(&pin_GPIO3) },
+    { MP_ROM_QSTR(MP_QSTR_SDA),  MP_ROM_PTR(&pin_GPIO2) },
+    { MP_ROM_QSTR(MP_QSTR_SCL),  MP_ROM_PTR(&pin_GPIO3) },
+
+    { MP_ROM_QSTR(MP_QSTR_D4), MP_ROM_PTR(&pin_GPIO4) },
+    { MP_ROM_QSTR(MP_QSTR_D5), MP_ROM_PTR(&pin_GPIO5) },
+    { MP_ROM_QSTR(MP_QSTR_D6), MP_ROM_PTR(&pin_GPIO6) },
+    { MP_ROM_QSTR(MP_QSTR_D7), MP_ROM_PTR(&pin_GPIO7) },
+    { MP_ROM_QSTR(MP_QSTR_D8), MP_ROM_PTR(&pin_GPIO8) },
+    { MP_ROM_QSTR(MP_QSTR_D9), MP_ROM_PTR(&pin_GPIO9) },
+    { MP_ROM_QSTR(MP_QSTR_D21), MP_ROM_PTR(&pin_GPIO21) },
+
+    { MP_ROM_QSTR(MP_QSTR_LED_RED), MP_ROM_PTR(&pin_GPIO16) },
+    { MP_ROM_QSTR(MP_QSTR_LED_GREEN), MP_ROM_PTR(&pin_GPIO17) },
+    { MP_ROM_QSTR(MP_QSTR_LED_BLUE), MP_ROM_PTR(&pin_GPIO18) },
+    { MP_ROM_QSTR(MP_QSTR_LED), MP_ROM_PTR(&pin_GPIO18) },
+
+    { 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);