In this video we will go over how to use the A4988 Stepper Motor Controller with Arduino UNO and NodeMCU. We will learn about the basics of the A4988, how to use the microstepping function of the A4988, how to set the current limit to avoid exceeding your motor current limit, how to connect to Arduino and NodeMCU, and we will go over several examples.
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.
Microstep Selection Pins
The A4988 driver supports microstepping by dividing a single step into smaller steps. This is achieved by energizing the coils with intermediate current levels.
For example, if you choose to drive the NEMA 17 (with 1.8° step angle or 200 steps/revolution) in quarter-step mode, the motor will produce 800 microsteps per revolution.
In this video we will go over how to use the A4988 Stepper Motor Controller with Arduino UNO and NodeMCU. We will learn about the basics of the A4988, how to use the microstepping function of the A4988, how to set the current limit to avoid exceeding your motor current limit, how to connect to Arduino and NodeMCU, and we will go over several examples.
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.
Microstep Selection Pins
The A4988 driver supports microstepping by dividing a single step into smaller steps. This is achieved by energizing the coils with intermediate current levels.
For example, if you choose to drive the NEMA 17 (with 1.8° step angle or 200 steps/revolution) in quarter-step mode, the motor will produce 800 microsteps per revolution.
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