qmk-firmware/keyboards/eco/rev1/info.json

{
    "usb": {
        "device_version": "0.0.1"
    },
    "matrix_pins": {
        "cols": ["F4", "F5", "F6", "F7", "B5", "B4", "E6", "D7", "C6", "D4", "D0", "D1", "D2", "D3"],
        "rows": ["B1", "B6", "B2", "B3"]
    },
    "diode_direction": "COL2ROW"
}