make l298n motor driver go clockwise and counterclockwise

The most common motor driver for Arduino is the L298N.ĮNAand ENB(7 and 12) pins are to control the speed of Motor A and Motor B, respectively. Within it are embedded H-bridge circuits and PWM control. Motor drivers are circuit boards especially made for controlling DC motors. With these two techniques, you’ll gain complete control of a DC motor, where motor drivers enter.

Closing a pair of switches at the same time changes the direction of the current flow, changing the direction of rotation. It is a circuit composed of four switches and a DC motor in the middle. On the other hand, H-bridges changes the spin direction of a DC motor. There’s a more accessible alternative, though. Connect the PWM pin to the base of a BJT or gate of a FET to drive the high power DC motor. The amplifying transistor is required to operate appropriately. However, these pins only produce low power PWM signals. The PWM makes it easier to regulate DC motor speed.

Thankfully, Arduino has designated PWM pins. Meanwhile, the lower the duty cycle, the lower the average voltage input, the slower the DC motor is. The higher the duty cycle, the higher the average voltage input, the faster the DC motor is. Moreover, the average voltage depends on the duty cycle (time on overtime off). These pulses are generally at a fast rate. It is a technique that allows us to regulate the average voltage input using ON and OFF pulses. PWM or Pulse Width Modulation is used to adjust the speed of a DC motor. With the combination of these two, you can alter your DC motor’s performance to fit your desired application. You can control a DC motor in these two aspects:

Make l298n motor driver go clockwise and counterclockwise