A4988 Stepper Motor Driver Module with Microstepping Control
A4988 Stepper Motor Driver Module with Microstepping up to 1/16
The A4988 is a popular stepper motor driver module that provides microstepping control for bipolar stepper motors. It operates from 8–35V and can deliver up to 2A per coil with adequate cooling. This driver is widely used in 3D printers, CNC machines, and robotics for precise motion control.
Key Specifications
| Specification | Value |
|---|---|
| Motor Supply Voltage | 8–35V DC |
| Maximum Current | 2A (with heatsink/cooling) |
| Microstep Modes | Full, 1/2, 1/4, 1/8, 1/16 |
| Logic Voltage | 3.3–5V |
| Overcurrent Protection | Yes, thermal shutdown |
| Dimensions | 15.5mm x 20.5mm |
What You Can Build With This
- 3D printer or CNC machine with precise axis control
- Automated camera slider for smooth time-lapse shots
- Robotic arm with accurate joint positioning
- DIY plotter or laser engraver for creative projects
Compatibility
The A4988 driver is compatible with all major 3D printer control boards like RAMPS 1.4, Arduino Mega 2560, and similar boards using step/direction control. It works seamlessly with 4-wire, 6-wire, and 8-wire bipolar stepper motors, and can be used with any microcontroller providing step and direction signals.
Wiring Notes
Connect motor supply to VMOT and GND, and logic supply (3.3–5V) to VDD and GND. Connect step and direction pins to your microcontroller's digital pins; the enable pin can be tied low to enable the driver. Always use a 100µF decoupling capacitor across motor power supply terminals.
Why Buy from Compoden
Every component is sourced from verified suppliers and tested for compatibility before listing. We've spent 10 years building projects for makers, schools, and institutions across India. Ships from Bengaluru in 3-5 days. If defective on arrival, replace within 7 days.
Is this compatible with Arduino?
Yes, the A4988 works with any Arduino board. Simply connect the STEP and DIR pins to two digital pins and provide power.
How do I adjust the current limit?
Use the small trimpot on the module. Measure the reference voltage at the Vref pin and set it according to the formula: I = Vref / (8 * Rs), where Rs is the sense resistor value (typically 0.05 or 0.1 ohms).
Does it come with a heat sink?
The module may or may not include a heat sink depending on the variant; check product images. We recommend using a small heat sink for currents above 1A.
📦 Free Setup Handoff Document Included
Every Compoden order includes a free setup handoff document — step-by-step instructions to get your component working within minutes. Download it via QR code on your package. The handoff document is also trained to help you troubleshoot the majority of problems.
What you can build with this
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items