Why Do We Need A Driver Module For Stepper Motors?

Due to the particularity of the stepper motor principle, most stepper motors can only run with the help of the drive module. This is because the controller module (microcontroller / digital circuit) will not be able to supply enough current from its I / O pins to make the motor run. Therefore, we will use external modules like ULN2003 modules as stepper motor drivers. There are many types of drive modules, and the rating of one of them will vary depending on the type of motor used. The main principle of all drive modules is to provide enough current for the motor to run.