On the other hand, when S2 and S3 are on, the right motor terminal is more positive than the left motor terminal, making the motor rotate in the other direction. When S1 and S4 are on, the left motor terminal is more positive than the right terminal, and the motor rotates in a certain direction. Here, the motor rotates in the direction dictated by the switches. The L298N motor controller follows the H-bridge configuration, which is handy when controlling the direction of rotation of a DC motor.
This is where the L298N motor controller comes in. Obviously, you can’t drive loads that require much more current like a motor.
There’s no problem there because the 20 mA or so current from the pins is enough. You can drive a LED on or off using a microcontroller like Arduino or PIC.
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