Control Stepper Motor with A4988 Driver Module & Arduino
For single-stepper-motor applications, a driver like the L298N is fine, but if you want to construct your own CNC machine or 3D printer, you’ll need a dedicated stepper motor driver like the A4988.
Due to the simplicity of the step motor control and the variety of stepping modes provided by the A4988 driver, it is an ideal solution for building applications that require precise and reliable stepper motor control, such as the movement control of beds, heads, and assemblies in various CNC plotting, milling, and 3D printer designs.
The fact that it only requires two pins to control the speed and direction of a bipolar stepper motor like the NEMA 17 is pretty neat, too.
A4988 Stepper Motor Driver Chip
At the heart of the module is a microstepping driver from Allegro – A4988. Despite its small stature (0.8″x0.6″), it packs quite a punch.
The A4988 stepper motor driver has an output drive capacity of up to 35V and ±2A. This allows you to control a bipolar stepper motor, such as the NEMA 17, at up to 2A output current per coil.
Furthermore, the output current is regulated, allowing for noiseless operation of the stepper motor and the elimination of resonance or ringing that is common in unregulated stepper driver designs.
The driver has a built-in translator for easy operation. This reduces the number of control pins to just two, one for controlling the steps and the other for controlling the spinning direction.
The driver offers five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step.
In order to ensure reliable operation, the driver has additional features such as under-voltage, shoot-through, short circuit, overcurrent, and thermal protection.
Control Stepper Motor with A4988 Driver Module & Arduino
For single-stepper-motor applications, a driver like the L298N is fine, but if you want to construct your own CNC machine or 3D printer, you’ll need a dedicated stepper motor driver like the A4988.
Due to the simplicity of the step motor control and the variety of stepping modes provided by the A4988 driver, it is an ideal solution for building applications that require precise and reliable stepper motor control, such as the movement control of beds, heads, and assemblies in various CNC plotting, milling, and 3D printer designs.
The fact that it only requires two pins to control the speed and direction of a bipolar stepper motor like the NEMA 17 is pretty neat, too.
A4988 Stepper Motor Driver Chip
At the heart of the module is a microstepping driver from Allegro – A4988. Despite its small stature (0.8″x0.6″), it packs quite a punch.
The A4988 stepper motor driver has an output drive capacity of up to 35V and ±2A. This allows you to control a bipolar stepper motor, such as the NEMA 17, at up to 2A output current per coil.
Furthermore, the output current is regulated, allowing for noiseless operation of the stepper motor and the elimination of resonance or ringing that is common in unregulated stepper driver designs.
The driver has a built-in translator for easy operation. This reduces the number of control pins to just two, one for controlling the steps and the other for controlling the spinning direction.
The driver offers five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step.
In order to ensure reliable operation, the driver has additional features such as under-voltage, shoot-through, short circuit, overcurrent, and thermal protection.
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