qmk_firmware/keyboards/40percentclub/i75/promicro/keyboard.json

{
    "matrix_pins": {
        "cols": ["B5", "B6", "B2", "B3", "B1", "F7", "F6", "F5", "F4"],
        "rows": ["B4", "E6", "D7", "C6", "D4", "D0", "D1", "D2", "D3"]
    },
    "diode_direction": "COL2ROW",
    "processor": "atmega32u4",
    "bootloader": "caterina"
}