Step 1: Set SEN_A and SEN_B and connect the 2 pins that are left with a jumper. ![]() Now let’s get down to the basics – what do you need to control a DC motor with your Arduino Motor Shield? The list is quite short: To learn more about the L298 chip, you can visit the Seeedstudio blog. It allows you to use your Arduino to control the speed and direction of the motor, and even control two DC motors at once (or one stepper motor). The Motor Shield is a special driver module based on the Dual Full-Bridge Drive Chip L298. How to control a DC motor using an Arduino Motor Shield DC motors usually do not have their own polarity (and if they do, then they are marked with + or -), which means that you can easily change the direction of rotation by reversing the wires. And how is this possible? When current flows through the motor, the opposite polarity between the two magnetic fields inside the motor causes it to rotate as long as the current passes through the device. This simple construction is enough to convert DC electrical energy into mechanical energy. A DC motor consists of a stator, armature, rotor and commutator. They are so popular because of their simplicity and efficiency compared to other types of motor. You may not be aware of it, but you use them every day – they are used in your vacuum cleaner or hair dryer, in elevators and in many other places.
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