EMG - Adjustable motor and speed controller for car system vehicles and DC motors. The EMG provides an adjustable supply voltage for small DC motors and similar applications. With this board, for example, the speed of wired vehicles (car system vehicles) can be adjusted. Depending on the type of vehicle, the driving speed can be individually reduced. Finally, tractors, construction machinery, as well as trucks and buses can operate at a realistic speed. The EMG is also very suitable for regulating rotational speeds, whether it is the speed of a wind turbine, a radar motor on a ship model, or the fan of an RC truck. Due to its size, this circuit can fit almost anywhere. A voltage of 2.3 to 6 V is applied at the input. The motor is connected directly at the output. The output voltage can now be adjusted using the small trim pot with a fine screwdriver. The EMG can handle peak currents of up to 1 A and a continuous current of 500 mA.