qmk_firmware/keyboards/bastardkb/scylla/blackpill/keyboard.json

{
    "keyboard_name": "Scylla Blackpill",
    "usb": {
        "device_version": "1.0.0",
        "shared_endpoint": {
            "keyboard": true
        }
    },
    "features": {
        "bootmagic": true,
        "mousekey": true,
        "extrakey": true,
        "rgb_matrix": true
    },
    "eeprom": {
        "driver": "spi"
    },
    "split": {
        "enabled": true
    },
    "rgb_matrix": {
        "driver": "ws2812"
    },
    "ws2812": {
        "pin": "A1",
        "driver": "pwm"
    },
    "build": {
        "debounce_type": "asym_eager_defer_pk"
    },
    "matrix_pins": {
        "cols": ["B0", "B1", "B10", "B3", "B4", "B5"],
        "rows": ["B15", "A2", "B8", "A8", "B9"]
    },
    "diode_direction": "ROW2COL",
    "development_board": "blackpill_f411"
}