The DRV8825 is a complete microstep motor driver with integrated encoder. Like the A4988 driver, this module can operate in 1, 1/2, 1/4, 1/8 and 1/16 step mode, but can also take 1/32 step. The pilot can control a bipolar stepper motor up to a power of 35 V and ± 2.5 A and works with I / O of 3.3 V and 5 V. This module has the same layout as the A4988 and can therefore be simply exchanged (note the polarity, in this design the potentiometer is on the other side than the A4988). This pilot can already be controlled with only 2 lines of data (step and dir).