A4988 Stepper Motor Driver for RepRap (with Headers) Key benefits Precise motion control: Supports microstepping up to 1/16 step to reduce vibration and improve positional accuracy. Protects your hardware: Built-in overcurrent and over-temperature protection helps prevent damage during stalls or overloads. Tunable performance: Adjustable current limit lets you match motor torque and heat to your specific stepper motor and supply. Easy integration: Supplied with headers for straightforward connection to RepRap controllers and other control boards. Core features Model: A4988 stepper motor driver designed for RepRap systems. Microstepping: Up to 1/16 step for smoother motion and finer resolution. Protections: Overcurrent and over-temperature protections to increase reliability. Current capability: Intended for stepper motors with phase current of 2A (for example, NEMA17 motors commonly used in 3D printers). Connectivity: Includes header pins for simple plug-in installation on compatible controller boards. Why you might need this Improve print quality or positioning by switching from full-step to fine microstepping. Prevent motor or driver failure by limiting current and relying on built-in protective features. Adapt a single controller board to different motors and mechanical loads by adjusting the current limit. Practical applications 3D printers: Drive NEMA17 stepper motors in RepRap-style printers for accurate layer positioning and smoother motion. Small CNC machines and desktop mills: Provide controlled torque and resolution for precise cutting or engraving. Robotics and motion systems: Use in camera sliders, pick-and-place assemblies, or robotic joints where compact, protected stepper control is required. Compatibility and installation notes Designed for RepRap-compatible controller boards and wiring; includes headers for easy connection. Recommended for stepper motors with phase current around 2A (e.g., common NEMA17 motors). Adjust the current limit to match your motor specifications and cooling setup. This A4988 driver provides an efficient, adjustable, and protected solution for driving stepper motors in RepRap and similar motion-control projects.