DRV8825 is a drop in replacement for the A4988 bipolar stepper motors driver. There are two main advantages of this driver, it can supply up to 2.2A output current to the stepper motor and it can go down to 1/32 step microstepping. This stepper driver takes the A4988 driver to the next level.
Comes with heat sink.
Features and Benefits:
Posted by Ross on 19th Feb 2016
Allowed me to work with microsteps of 1/32 doubling my resolution.
Posted by Unknown on 29th Jan 2016
Satisfied with performance driving NEMA 17 0.5Nm 1.8deg stepper motor with 14v supply current limited to 0.2A.Tested with Arduino library 'AccelStepper' (AccelStepper::Driver - 2 wire i/f).
With miniature heatsink fitted, thermal management may be an issue with (trimpot-set) current limit >1A.
Good microstepping performance to 1/32 step resolution (refer TI DRV8825 datasheet for h/w configuration).
All prices are in USD.