The PWM Pins are unnecessary if you do not want to control PWM features.Make sure you have all of your grounds tied together Arduino, Power source, and the Motor Controller.H-bridges are typically used in controlling motors’ speed and direction but can be used for other projects such as driving the brightness of certain lighting projects such as high powered LED arrays.EnA: Enables PWM signal for Motor A (Please see the “Arduino Sketch Considerations” section).5v: 5v input (unnecessary if your power source is 7v-35v, if the power source is 7v-35v then it can act as a 5v out).Out4: Mo (Can actually be from 5v-35v, just marked as 12v).Maximum motor supply current: 2A per motor.Perfect for driving DC and Stepper motors for micro mouse, line following robots, robot arms, etc. This motor driver is perfect for robotics and mechatronics projects and perfect for controlling motors from microcontrollers, switches, relays, etc. It can control up to 4 DC motors, or 2 DC motors with directional and speed control. It uses the popular L298N motor driver IC and has on board 5V regulator which it can supply to an external circuit. L298N 2A DC Motor Driver Module is a high power motor driver perfect for driving DC Motors and Stepper Motors. This module USES L298N as the main drive chip, with strong driving ability, low heat and strong anti-interference ability.
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