picow-bluetooth-numpad is a Bluetooth numpad firmware for Raspberry Pi Pico W.

Features

• Open source hardware (3D model files available on Printables)
• Customizable keymap
• Supports both GAP and GATT profile for enhanced compatibility

Build

Requirements

Follow 2.2. Install the Toolchain section of Getting started with Raspberry Pi Pico to install build dependencies.

Steps

1. git clone https://github.com/dfkdream/picow-bluetooth-numpad.git
2. cd picow-bluetooth-numpad
3. git submodule update --init
4. cd lib/pico-sdk && git submodule update --init
5. cd ../../ && mkdir build && cd build
6. cmake ..
7. make .

Configurations

Modify Keymap

Open main.c file and modify the keymap[] variable according to your preference.

The definition for keys can be found at keyboard/scancodes.h.

Switch Between GAP and GATT profile

Set USE_BLE to true for GATT, false for GAP.

Change device name

GAP profile

1. Open keyboard/bluetooth_classic.c
2. Modify hid_device_name[] global variable
3. Modify parameter of gap_set_local_name function

GATT profile

1. Open keyboard/picow-bluetooth-numpad.gatt
2. Modify line 2
3. Open keyboard/ble.c
4. Modify Name section of adv_data[] global variable. You need to change first hex value to number of characters in name+1.