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 ...

Overview of the L293D Motor Driver The L293D is an H-bridge motor driver integrated circuit used to control DC motors and stepper motors. It allows the direction and speed of motors to be controlled ...

Yes, two AA batteries at 1.5v each would equal only 3 volts when connected in series. The Arduino needs 5v so [AI] decided to use a MAX756 DC-to-DC step-up regulator to maintain a steady stream of 5v.