HALJIA 5PCS A4988 Stepstick Stepper Motor Driver Module + Heat Sink Compatible with 3d Printer Reprap

• A4988 driver board widely used in 3D printers and small CNC machines
• Simple step and direction control interface
• Thermal protection, over-current protection, ground fault protection
• Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step
• Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor's rated voltage to achieve higher step rates

Features: 1.Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay) 2.Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection 3.Automatic current decay mode detection/selection 4.Internal UVLO 5.Mixed with slow current decay modes 6.Synchronous rectification for low power dissipation 7.Crossover-current protection 8.Thermal shutdown circuitry 9.3.3 and 5 V compatible logic supply 10.Thermal shutdown circuitry 11.Ground Fault Circuit 12.short-circuit protection 13.five optional step mode: full, 1/2, 1/4, 1/8 and 1/16 Packing List: 5*A4988 StepStick Stepper Motor Diver Module 5*Heat Sink