Stepper Motor Driver A4988

The Stepper Motor Driver A4988 is a compact driver module for bipolar stepper motors such as NEMA 17. It uses simple STEP and DIR inputs, so an Arduino, ESP32 or 3D printer board can move the motor one step per pulse, with microstepping down to 1/16 step for smooth, quiet motion. It is widely used in 3D printers, CNC machines and camera sliders.

Stepper Motor Driver A4988 Specifications

• Driver IC: Allegro A4988
• Motor supply: 8–35 V
• Logic supply: 3–5.5 V
• Output current: up to 2 A per coil with good cooling, about 1 A without a heatsink
• Step modes: full, 1/2, 1/4, 1/8 and 1/16 (set with MS1–MS3)
• Control: STEP, DIR, ENABLE, SLEEP and RESET inputs
• Current limit: adjustable with the on-board potentiometer
• Protection: over-temperature shutdown, under-voltage lockout

Stepper Motor Driver A4988 Applications

• 3D printers and RAMPS or CNC shield boards
• Small CNC routers, laser engravers and plotters
• Camera sliders and robotic projects
• Arduino and ESP32 stepper motor experiments

What's in the Box

• 1 × A4988 stepper motor driver module

Tip: Connect RESET to SLEEP if you do not use them, and place a 100 µF capacitor across VMOT and GND. Set the current limit before running the motor, and never connect or disconnect the motor while the driver is powered.

Orders placed before 14:00 are ready for pickup the same day. Delivery across Lebanon usually takes 1–3 working days.