qmk_firmware/keyboards/handwired/dactyl_manuform/6x6/blackpill_f411/keyboard.json

{
    "matrix_pins": {
        "cols": ["B1", "B0", "A7", "A6", "A5", "A4"],
        "rows": ["B12", "B13", "B14", "B15", "A8", "A9", "A10"]
    },
    "diode_direction": "COL2ROW",
    "split": {
        "enabled": true,
        "bootmagic": {
            "matrix": [7, 0]
        }
    },
    "development_board": "blackpill_f411",
    "features": {
        "bootmagic": true,
        "mousekey": true,
        "extrakey": true,
        "console": true,
        "command": true
    }
}