qmk_firmware/keyboards/melgeek/mj6xy/rev3/info.json

{
    "matrix_pins": {
        "cols": ["B0", "B1", "B2", "B3", "B6", "B5", "B4", "D7", "D6", "D4", "D5", "F7", "D2", "D1", "D0"],
        "rows": ["F0", "F1", "F4", "F5", "F6"]
    },
    "diode_direction": "COL2ROW",
    "backlight": {
        "driver": "software",
        "pin": "B7",
        "levels": 10
    },
    "ws2812": {
        "pin": "C6"
    }
}