Bộ Điều Khiển Bước Reprap Tản Nhiệt Cho Các Bộ Phận Máy In 3D Mô-đun Điều Khiển Động Cơ Bước A4988 DRV8825

3D Printer Parts StepStick A4988 DRV8825 Stepper Motor Driver With Heat sink Carrier Reprap RAMPS 1.4 MKS GEN V1.4 board Drv8825: The DRV8825 stepper motor driver carrier is a breakout board for DRV8825 microstepping bipolar stepper motor driver. The module has a pinout and interface that are nearly identical to those of our A4988 stepper motor driver board, so it can be used as a higher-performance drop-in replacement for those boards in many applications. The DRV8825 features adjustable current limiting, overcurrent and overtemperature protection, and six microstep resolutions (down to 1/32-step). It operates from 8.2 ¨C 45 V and can deliver up to approximately 1.5 A per phase without a heat sink or forced air flow (rated for up to 2.2 A per coil with sufficient additional cooling). Features: * Simple step and direction control interface * Six different step resolutions: full-step, half-step, 1/4-step, 1/8-step, 1/16-step, and 1/32-step * Adjustable current control lets you set the maximum current output with a potentiometer, which lets you use voltages above your stepper motor rated voltage to achieve higher step rates * 45 V maximum supply voltage * Built-in regulator (no external logic voltage supply needed) * Can interface directly with 3.3 V and 5 V systems * Over-temperature thermal shutdown, over-current shutdown, and under-voltage lockout * Short-to-ground and shorted-load protection * 4-layer, 2 oz copper PCB for improved heat dissipation * Exposed solderable ground pad below the driver IC on the bottom of the PCB *Module size, pinout, and interface match those of our A4988 stepper motor driver carriers in most respects A4988: Features: -Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay) -Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection -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 -Load short-circuit protection -Of five optional step mode: full, 1/2, 1/4, 1/8 and 1/16