{ "matrix_pins": { "cols": ["B12", "B13", "B14", "B15", "A8", "A10"], "rows": ["A15", "B3", "B4", "B5", "B7"] }, "diode_direction": "COL2ROW", "ws2812": { "driver": "pwm" }, "processor": "STM32F411", "bootloader": "stm32-dfu", "board": "BLACKPILL_STM32_F411" }