A4988 Stepper Motor Driver (up to 2 A) with Aluminum Heatsink for 3D Printers and CNC (red)

A miniature bipolar stepper motor driver based on the A4988 for precise control of stepper motors (NEMA 17, NEMA 14, etc.) in CNC and 3D printing systems.Microstepping support: Step division (up to 1/16) provides high positioning accuracy and reduces noise and vibration during motor operation.Current limit adjustment: Using the trimmer potentiometer and measuring the reference voltage ($V_{ref}$), you can precisely set the current limit for the specific characteristics of your stepper motor.Comprehensive protection: Built-in overheating and overload protection mechanisms safeguard the controller and chip from damage. Features Chip — Allegro A4988 Motor power supply voltage (VMOT) — 8 V – 35 V DC Logic supply voltage (VDD) — 3.0 V – 5.5 V DC Maximum current — Up to 2 A per phase (with active cooling; up to 1 A without heatsink) Microstep modes — Full step, 1/2, 1/4, 1/8 and 1/16 step (set via MS1, MS2, MS3 pins) Protection — Overcurrent, overheating (Thermal Shutdown), undervoltage (UVLO) and short-circuit protection Current adjustment — Built-in trimmer potentiometer (Vref) Package contents — A4988 driver module (red board) and aluminum heatsink with thermal tape