3) Relay Module: Controls the power supply to the motors, acting as a switch. 4) DC Motors: Provide the driving force for the car. 5) Motor Power Supply: A battery pack or other power source for the ...

The speed of the DC motor (both directions) is controlled with the 10k potentiometer which is connected to analog channel 0 (A0) and the direction of rotation is controlled with the push button which ...

Figure 1. Arduino Uno. available to control a DC motor [8]. The Arduino Uno is one of the most common starter boards that are being used to control multiple kinds of motors, especially DC motors, ...