{
"usb": {
"device_version": "0.0.2"
},
"matrix_pins": {
"cols": ["A7", "A6", "A5", "A4", "B4"],
"rows": ["B15", "A8", "A9", "A10", "A15", "B3"]
"processor": "STM32F103",
"bootloader": "stm32duino"
}