All of the GPIOs {GPIO 1, 3 (UART), GPIO 0, 2 (I2C), GPIO 4, 5, 12, 13, 14, 15, 16} are broken out (GPIO 6 - 11 are for the QSPI flash) so this board can also be used to drive ESCs for use with brushless motors, and the flight controller also makes a...