DRV8825 stepper motor controller

The DRV8825 stepper motor controller module allows you to control stepper motors in various projects. This model is designed on the DRV8825 chip from Texas Instruments. The module is an improved analogue of the motor controller A4988. The main advantages of the DRV8825 stepper motor controller compared to its analogue are: high microstepping (1/32), which ensures minimal device noise, passing current of 2.2 A per winding and passing current of 1.2 A rating without additional cooling of the driver in the form of a radiator .

The module has protection against overload and overheating (shutdown when the driver is heated above 150 degrees) of the driver. The maximum current is controlled by a potentiometer. The driver also has six microstep options: full step, 1/2, 1/4, 1/8, 1/16 and 1/32 steps.

The output connectors are pre-soldered with male extensions for quick connection to the microcontroller device.

The microcontroller is connected to the module through 5 pins. The RESET, SLEEP and GND outputs connect the logic power of the microcontroller, and the STEP and DIR pins serve as a line for transmitting a signal about the direction of the motor and step. To connect the stepper motor to the module, pins A1, A2, B1 and B2 are used, and the VMOT and GND pins are responsible for its power supply.

Voltage can be supplied to the module both from an external power source and from a microcontroller device. The controller operates on a voltage of 8.2 - 45 V.

The kit of this module includes: a DRV8825 stepper motor controller and a heatsink for cooling the microcircuit.

Module Specifications:

Chip DVR8825
Logic voltage, V 3.3 ... 5
Supply voltage, V 8.2 ... 45
Maximum current with radiator, A 2.2
Maximum current without radiator, A 1.2
Permissible pitch 1/2, 1/4, 1/8, 1/16, 1/32
Module dimensions, mm 15.2 x 20.3

Module connection diagram: