AptoFun StepStick Motor Driver A4988 / Stepper Motor Driver A4988 with Heat Sink for RepRap 3D Printer Compatible with Arduino (with 2 oz Copper PCB for Improved Heat Dissipation, MAX 2A)
Brand: AptoFun

Specification:
Low RDS (ON) outputs(A0~A5/li)
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
3.3 and 5 V compatible logic supply
Thermal shutdown circuitry
Ground Fault Circuit
Loading short-circuit protection
The optional five step mode: full, 1/2, 1/4, 1/8 and 1/16

Power Supply: 5V / 3.3V; Motor voltage: 8V - 35V
Current: max 2A (only with heat sink); Steps: 1/1 - 1/2 - 1/4 - 1/8 - 1/16
Dimensions: 20,5mm x 15,5mm (without pinheader); Weight: 0.5gr. (Without pinheader)
Simple step and directional control interface
With heat sink for RepRap 3D printer compatible with Arduino (with 2 copper PCBs for improved heat dissipation)