This video tutorial explains how to control the speed and direction of a DC motor using an Arduino and an H bridge. It covers the wiring of the L293D H bridge, coding for motor control, and using inputs like buttons and a potentiometer to adjust motor behavior. The tutorial also highlights the importance of checking connections to avoid damage and provides challenges for viewers to enhance their understanding.

How can you use a potentiometer to control the speed of the motor?

What happens if both input pins of the H bridge are set high?

Explain the role of the external battery pack in the motor control circuit.

What are the steps to troubleshoot the circuit before powering it up?