Jopto 5Pcs StepStick A4988 Green Arduino Stepper Compatible Motor Driver Carrier Reprap Module With Mini Heat Sink Compatible with 3D Printer Controller Reprap Ramps1.4

• A4988 driver board widely used in 3D printers and small CNC machines.
• Simple step and direction control interface, Short-to-ground and shorted-load protection. Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection.
• Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step.
• Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay).
• 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: Simple step and direction control interface. Five different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-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. 3.3V and 5V compatible logic supply. Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection. Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay). Automatic current decay mode detection / selection. Internal UVLO. Mixed with slow current decay modes. Synchronous rectification for low power dissipation. Crossover-current protection. Thermal shutdown circuitry. Ground Fault Circuit, Load short-circuit protection. Size: 20.5 x 15 x 11.2mm Heat Sink: 8.7 x 8.7 x 5.3mm Color: Green Weight: 5g Package Content: 5 x A4988 Stepper Motor Driver Module 5 x Mini Heat Sink