To support peripherals of the RPi tank.
2 LEDs, 2 Servo Motors, 2 DC Motors
##[ 4 Main Classes ]
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Jangho_LED => It is an LED object. ( LED is emitted by using Motor driver(HAT) )
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Jangho_Servo => It is an servo motor object. ( There can be 2 servo motors, Board : M1, M2 )
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Adafruit_DCMotor => It is an DC Motors object. ( There can be 2 DC motors, Board : M3, M4)
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Adafruit_MotorHAT => Manager class that has a set of objects(2 DC, 2 Servo, 2 LEDs ), getXXXX() can be invoked to get one of these objects => also it controls pwm drvier(frequency, pin value)