A4988 DRV8825 Stepper Motor Driver Module With Heat Sink For 3D Printer CNC Machine Engraving Machine Stepper Motor Control Board

A4988 & DRV8825 Stepper Motor Driver Module

📌 Product Overview

A4988 and DRV8825 are high‑performance micro‑stepping stepper motor driver modules with built‑in translator chip. Only simple STEP pulse signal and DIR direction signal are required to drive bipolar stepper motors, no complex phase sequence programming needed. They are widely used for 3D printers, CNC engraving machines and various stepper motor control projects. DRV8825 is the upgraded version compared with A4988, supporting higher output current and higher micro‑step resolution.

📋 Product Specifications

Item	A4988 Parameter	DRV8825 Parameter
Motor Supply Voltage	8.2V‑35V	8.2V‑45V
Logic Voltage	3.3V / 5V compatible	3.3V / 5V compatible
Max Drive Current	±1A	2.5A
Micro‑step Modes	Full, 1/2, 1/4, 1/8, 1/16	Full, 1/2, 1/4, 1/8, 1/16, 1/32
PCB Layer	2‑layer PCB	4‑layer PCB for better heat dissipation
Dimension	20.2*15.2mm	20.3*15mm
Weight	2.8g	2.8g
Operating Temperature	-40℃ ~ +85℃	-40℃ ~ +85℃

✨ Core Features

✅ Built‑in translator chip, only STEP & DIR control signals required, easy wiring ✅ Adjustable output current via potentiometer to match different stepper motors ✅ Multiple micro‑step resolution options for smoother motor operation ✅ Automatic current decay mode detection & selection (slow / mixed decay) ✅ Synchronous rectification for lower power consumption ✅ Rich protection functions: UVLO undervoltage lockout, cross‑current protection, over‑temperature shutdown, ground short‑circuit & load short‑circuit protection ✅ No special power‑on sequence required ✅ Comes with matching heatsink for heat dissipation

🆚 DRV8825 Upgrade Advantages vs A4988

🔹 Higher maximum drive current up to 2.5A 🔹 Supports up to 1/32 micro‑step for higher motion precision 🔹 4‑layer PCB design, superior heat dissipation performance 🔹 Lower internal resistance, less heat generation during working

🛠 Application Scenarios

• 3D printer motion control (Prusa Mendel, Ultimaker, Printbot, MakerBot etc.)
• CNC engraving machine, laser engraving equipment
• Robot, automated equipment stepper motor drive
• DIY motion control electronic projects

⚠ Important Usage Notice

1. Please adjust potentiometer to set proper output current before power‑on to avoid burning stepper motor or driver chip.
2. Must install heatsink when working under large current condition to prevent over‑temperature protection or chip damage.
3. Do not exceed the maximum motor supply voltage of the module.
4. Check wiring carefully to prevent short‑circuit damage. Kind reminder: If there are version differences or images have not been updated, please refer to the actual product.