qmk_firmware/keyboards/oddball/v2_1/keyboard.json

{
    "matrix_pins": {
        "cols": ["B6", "B5", "B4", "F5", "F6", "F7"],
        "rows": ["D4", "E6", "D7", "C6"]
    },
    "diode_direction": "COL2ROW",
    "bootloader": "qmk-dfu"
}