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A4988 Stepper Motor Driver Module

85.00 EGP

In stock

A high-performance microstepping driver for controlling bipolar stepper motors. Features adjustable current limiting, thermal shutdown, and five microstep resolutions. Includes a free aluminum heat sink for reliable operation in 3D printers and CNC machines.

SKU: PRO00396 Categories: ,

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Description

Product Overview

The A4988 is a complete microstepping motor driver with a built-in translator for easy operation. It is designed to operate bipolar stepper motors (like NEMA 17) in full-, half-, quarter-, eighth-, and sixteenth-step modes. This module is the most popular choice for DIY 3D printers, CNC routers, and robotic precision movements because it only requires two pins (Step & Direction) from your microcontroller.

Arduino Wiring & Connections

  • VMOT / GND: External Power (8V – 35V) for the motor.

  • VDD / GND: Arduino 5V / GND for logic.

  • STEP: Arduino Digital Pin (controls speed).

  • DIR: Arduino Digital Pin (controls direction).

  • 1A, 1B, 2A, 2B: Connect to Stepper Motor coils.

  • ENABLE: Connect to GND to turn the driver on.

Technical Specifications

Feature Specification
Motor Supply Voltage 8V to 35V
Logic Voltage 3.3V to 5.5V
Output Current Up to 2A (with heat sink and cooling)
Microstep Resolutions 1, 1/2, 1/4, 1/8, and 1/16
Protection Thermal Shutdown, Under-voltage Lockout, Crossover-current protection
Interface Simple STEP and DIRECTION pins

Key Features

  • Microstepping Control: Achieve smooth and quiet motion with up to 1/16 step resolution.

  • Adjustable Current: Includes an onboard potentiometer to limit the maximum current output, preventing motor damage.

  • Thermal Management: Comes with an adhesive-backed aluminum heat sink.

  • Intelligent Chopping Control: Automatically selects the correct current decay mode (Fast or Slow).

Downloads & Resources

You can see the rest of our available 3D printing and CNC parts from here: 3D Printer & CNC | Pro Tronix

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