Adafruit A4988 Stepper Motor Driver Breakout Board
100 units will be available shortly.
Stepper motors are essential for CNC machines, 3D printers, and any application requiring precise, controlled motion. To achieve smooth and reliable performance, you need a driver that can handle high current bursts and microstepping for finer control. Instead of building a complex driver setup with timers, an H-Bridge, and a microcontroller, the Adafruit A4988 Stepper Motor Driver simplifies everything—just two control pins are needed to get your stepper motor moving.
Easy Stepper Motor Control
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No need for timers or PWM – Control motion with just two pins:
- DIR (Direction) pin sets the motor’s rotation direction.
- STEP pin advances the motor one step or microstep per pulse.
- Supports microstepping – Default 1/16 microstep mode can be adjusted to full step, 1/2, 1/4, or 1/8 microstepping via MS1/MS2/MS3 pins.
- Real-time microstep adjustment – Change stepping modes on the fly for dynamic control.
- Built-in LED indicators – Red and green LEDs show direction, while the yellow LED indicates step pulses.
Designed for Prototyping & Performance
- Allegro A4988 – A widely used stepper motor driver with overcurrent protection.
- Supports motor voltages from 8V to 35VDC – Ideal for a wide range of stepper motors.
- Logic voltage: 3V to 5V – Works with microcontrollers like Arduino, ESP32, Raspberry Pi, and more.
- Terminal blocks for motor connections – Simplifies wiring for stepper motors and power input.
- Compact, durable design – Includes 2 oz copper PCB for improved current handling and heat dissipation.
- Current limiting up to 2A – Adjustable via onboard potentiometer. Higher currents require heatsinking.
- 22uF 50V electrolytic capacitor – Helps stabilize motor power.
Additional Features
- Sleep, Reset, and Enable control lines – Manage power and motor activation.
- Four mounting holes – Secure the board in your project.
- Includes a header strip – Some light soldering required for setup.
What You’ll Need
- Microcontroller or stepper control board – To toggle the DIR/STEP pins.
- Stepper motor & power supply – Not included, but required for operation.
- Optional heatsink – Recommended for high-current applications.
The Adafruit A4988 Stepper Motor Driver Breakout makes precise stepper motor control easy, whether you're working on a robot, CNC machine, or 3D printer.
The Adafruit A4988 Stepper Motor Driver Breakout Board appears in the following collections:
SKU AF-6109
by Little Bird
