A4988 Stepper Motor Driver Module with Heatsink

The A4988 Stepper Motor Driver Module is a complete microstepping motor driver with a built-in translator for easy operation. Designed to drive bipolar stepper motors in full-, half-, quarter-, eighth-, and sixteenth-step modes, it can handle output drive capacities of up to 35V and ±2A. This makes it an essential component for building high-precision motion control systems, allowing you to control stepper motors with just two pins from your microcontroller: one for step pulses and one for direction.

This green A4988 carrier board is highly popular in the maker community, serving as the default choice for RepRap 3D printers (such as Prusa i3 models using RAMPS 1.4 shields), DIY CNC routers, and laser engravers. It features adjustable current limiting, over-current protection, and thermal shutdown. The module comes complete with an adhesive-backed aluminum heatsink to ensure stable thermal performance and prevent overheating during continuous, high-load operations.

Features:

• Simple Step and Direction Control: Reduces the microcontroller pin requirement to just two I/O pins.
• Five Microstep Resolutions: Supports full-step, half-step, quarter-step, eighth-step, and sixteenth-step modes.
• Adjustable Current Limiting: Onboard potentiometer allows you to set the maximum current output to prevent motor damage.
• Intelligent Chopping Control: Automatically selects the correct current decay mode (fast decay or slow decay) for smooth motion.
• Comprehensive Protection: Built-in thermal shutdown, under-voltage lockout, crossover-current protection, and short-to-ground/shorted-load protection.
• Heatsink Included: Comes with a mini aluminum heatsink with pre-applied thermal adhesive tape for easy installation.

Package Includes:

1 x A4988 Stepper Motor Driver Module (Green)

1 x Aluminum Heatsink with Thermal Tape