qmk_firmware/keyboards/atreus/feather/keyboard.json

{
    "matrix_pins": {
        "cols": ["D7", "B5", "D1", "D0", "C6", "B6", "F0", "D2", "D3", "F4", "F1"],
        "rows": ["B7", "D6", "C7", "F5"]
    },
    "diode_direction": "COL2ROW",
    "processor": "atmega32u4",
    "bootloader": "caterina",
    "features": {
        "bluetooth": true,
        "console": false
    },
    "build": {
        "lto": true
    },
    "bluetooth": {
        "driver": "bluefruit_le"
    }
}