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{ "matrix_pins": { "cols": ["A5", "A6", "A7", "B0", "B1", "B10"], "rows": ["A4", "A3", "A2", "A1", "A0"] }, "diode_direction": "COL2ROW", "processor": "STM32F401", "bootloader": "stm32-dfu", "board": "BLACKPILL_STM32_F401" }