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Remote Controller Kit
It is a serial (UART) robot remote controller using a pair of high quality multidirectional switch (8 direction joystick with push activation) and a pair of push switch. You can use one joystick to control the movement of your robot, and then use the other joystick to control whatever else is mounted on your robot. The Remote Controller works by broadcasting the status of all keys 20 times a second. Your robot captures this information and your robot program decides what to do with it.