Hi, My name is Andrew. I have been making an RC car using an arduino. When I connect the stepper motors to the arduino pins, the motors either don't work or rotate slowly. When I connect a motor shield to the arduino I don't know the correct pins to connect the motors since the pins are not labelled 13,12, or 1,2,3 . So I want ask you to send me an image of a motor shield that has labelled pins(13,12 and so on) and connects to an arduino.