DRV8825 Stepper Motor Driver With Heatsink
The module has a pinout and interface nearly identical to the A4988 stepper driver, so it can be used as a higher-performance drop-in replacement 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 – 40V and can deliver up to 1.5A per phase without a heat sink or forced air flow (rated for up to 2.2 A per coil with sufficient additional cooling).
DRV8825 Technical Specs:
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 set with a potentiometer
40V maximum supply voltage
Built-in regulator (no external logic voltage supply needed)
Interfaces directly with 3.3V and 5V 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 the A4988 stepper drivers
That said, these likely have counterfit TI DRV8825 ICs but will function just fine for nearly all applications as long as the supply voltage is kept below about 40V.