5Pcs A4988 Stepper Motor Driver Module for RepRap 3D Printers - StepStick with Heatsinks | Compatible with CNC, Robotics & DIY Electronics Projects

This stepper motor driver module is a breakout/carrier board for Allegro's A4988 DMOS Microstepping Driver with Translator and Overcurrent Protection and is Pololu / StepStick compatible. This stepper motor driver lets you control a bipolar stepper motor at 1 A continuous current per phase without a heatsink or cooling, and at up to 2 A maximum output current per coil if additional cooling is provided. An onboard potentiometer is used to adjust the current output.This driver can control the stepper motor with just 2 pins from the controller, one for controlling the rotation direction and the other for controlling the steps. Stepper motors typically have a step size specification (e.g. 1.8° or 200 steps per revolution), which applies to full steps. This microstepping driver allows higher resolutions by providing intermediate step locations, which are achieved by energizing the coils with intermediate current levels. For instance, driving a motor in quarter-step mode will give the 200-step-per-revolution motor 800 microsteps per revolution by using four different current levels. This driver module provides five different step resolutions: Full-step, 1/2, 1/4, 1/8 and 1/16 step.Ideal for applications that do not have a complex microprocessor available, and pairs well with Arduino microcontrollers.Specifications:Minimum operating voltage: 8VMaximum operating voltage: 35VContinuous current per phase: 1AMaximum current per phase: 2A (with cooling)Minimum logic voltage: 3VMaximum logic voltage: 5.5VThermal shutdown circuitry, Ground fault protection, Load short-circuit protectionMicrostep resolutions: Full, 1/2, 1/4, 1/8 and 1/16Package contents:5 x A4988 Stepper motor driver module5 x HeatsinkLink to online Operation and Programming Instructions

Control a bipolar stepper motor at up to 2 A current per phase. An onboard potentiometer is used to adjust the current output

Simple step and direction control interface with five step resolutions full-step, half-step, 1/4-step, 1/8-step, and 1/16-step

Uses just 2 pins from the microcontroller, one for controlling the rotation direction and the other for controlling the steps

8V to 35V output voltage range at up to 2A current

Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection