ALLNET 4duino 3D printer e.g. Pololu DRV8825 Stepper Motor Driver

ALLNET 4duino 3D printer e.g. Pololu DRV8825 Stepper Motor Driver
This product is a carrier board or breakout board for TI's DRV8825 stepper motor driver. Please read the DRV8825 datasheet (1MB pdf) carefully before using this product. This stepper motor driver allows you to control a bipolar stepper motor with up to 2.2A output current per coil (see the Power Loss section below for more information). Here are some of the driver's key features:
Easy step and direction control
Six different step resolutions: full step, half step, 1/4 step, 1/8 step, 1/16 step and 1/32 step
Adjustable current control can You can adjust the maximum current output with a potentiometer that allows you to use voltages above your stepper motor's rated voltage to achieve higher step rates
Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay)
45V maximum supply voltage
Built-in regulator (no external logic voltage required)
Can communicate directly with 3.3V and 5V systems
Over-temperature thermal shutdown, over-current shutdown and under-voltage shutdown
Short to ground and short circuit protection
4-layer, 2 oz copper PCB for improved heat dissipation
Desoldered solderable ground pad below the driver IC on the bottom of the board