The A4988 Stepper Motor Driver Module is a compact, cost-effective breakout board based on Allegro’s A4988 driver chip. Ideal for bipolar stepper motors, it supports adjustable current limiting, over-temperature, and over-current protection for reliable performance. Operating from 8V to 35V, it delivers up to 1A per phase (2A with cooling).
It features five microstepping resolutions: full, half, quarter, eighth, and sixteenth steps—enabling smoother and more precise motor control. The built-in translator simplifies operation: a single pulse on the STEP pin advances the motor by one microstep, eliminating the need for complex control logic or phase sequencing.
The A4988’s internal chopper control automatically selects between slow and mixed decay modes to reduce motor noise, improve accuracy, and minimize power loss. In mixed decay, the current begins with fast decay and transitions to slow decay—enhancing performance in dynamic applications.
Perfect for 3D printers, CNC machines, and automation projects, the A4988 driver module offers a simple yet powerful solution for efficient stepper motor control.