This video showed in detail the control of a stepper motor using the A4988 driver.
A4988 driver http://ali.pub/49l4uo
Pulse Generator: http://ali.pub/49l51o
Arduino Nano: http://ali.pub/454su0
Connecting wires: http://ali.pub/454s27
Popular stepper motor NEMA17: http://ali.pub/49lhbu

Sketch: https://drive.google.com/file/d/1XL6w...

The A4988 driver is used to control a bipolar stepper motor. For control, you can use arduino and not only. The driver supports dividing the motor step (microstep) by 1/2, 1/4, 1/8 and 1/16 steps. This reduces motor noise and improves positioning accuracy. To adjust the motor current, there is a tuning resistor on the module board. See the video for the formula for calculating the current.
The driver requires a power supply with a voltage of 3 to 5.5V. The motor requires a separate power supply with voltage from 8 to 35V. The power source must provide the necessary current for the normal operation of the stepper motor. The maximum motor current supported by the a4988 driver is 1A without a radiator and 2A with a radiator.
To start the stepper motor, you can use any pulse generator with an amplitude of 35.5V. You can also control the rotation using arduino and other microcontrollers. In addition to controlling the step, the arduino can control the direction of rotation, setting the step division, sleep mode, and resetting the driver.

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