DRV8825 Stepper Motor Driver Module with Heat Sink

Bipolar stepper driver up to 1/32 microstepping, ~2.2A peak, higher-current A4988 alternative.

₹140 + 18% GST

SKU: BOTBIT-MOT-07 · Best for: 3D printers needing higher motor current or 1/32 microstepping

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Overview

About DRV8825 Stepper Motor Driver Module with Heat Sink.

The DRV8825 is the higher-current, higher-resolution cousin of the A4988, built on Texas Instruments' DRV8825 chip. It uses the same StepStick footprint and STEP/DIR interface, so it drops into the same RAMPS, CNC-shield and 3D-printer sockets, but it adds 1/32 microstepping and handles more current -- around 2.2A peak per phase with proper cooling -- making it the go-to upgrade when the A4988 runs out of headroom.

It is popular in India for larger NEMA 17 and NEMA 23-class motors and for printers that need finer microstepping. It runs off a wider 8.2-45V motor supply and includes fault and low-power sleep outputs. The included heat sink is more important here because the higher current means more heat.

You can identify a DRV8825 board by its purple PCB (commonly) and the trim-pot near the top edge rather than the bottom. Current setting uses a different Vref formula from the A4988, so the two are not interchangeable in setup even though they are pin-compatible.

Key features

Why it stands out.

Higher current handling than A4988 -- up to ~2.2A peak per phase with cooling

Microstepping down to 1/32 step for smoother, quieter motion

Wide 8.2-45V motor supply range

Adjustable current limit via onboard trim-potentiometer

StepStick-compatible pinout for RAMPS 1.4 and CNC shields, heat sink included

Integrated fault detection, over-current and thermal-shutdown protection

Specifications

Selection facts.

Driver IC	Texas Instruments DRV8825
Motor type	Bipolar stepper
Motor supply voltage	8.2 - 45V DC
Logic supply voltage	3.3 - 5V compatible logic
Continuous current per phase	Up to ~1.5A without extra cooling
Peak current per phase	~2.2A with heat sink and airflow
Microstep resolutions	Full, 1/2, 1/4, 1/8, 1/16, 1/32
Control interface	STEP / DIR (plus ENABLE, M0-M2, RESET, SLEEP, FAULT)
Current-set reference	Current limit = Vref x 2 (0.1 ohm sense resistors)
Board format	StepStick / Pololu-compatible carrier

Applications

Where it is used.

3D printers needing higher motor current or 1/32 microstepping
CNC routers and engravers driving larger NEMA 17/23 steppers
High-precision motion stages and linear actuators
Laser cutters and plotters requiring smooth, quiet stepping
Any bipolar-stepper build upgrading from an over-taxed A4988

Buying guide

How to choose.

Choose the DRV8825 over the A4988 when your motor draws more than ~1.2A per phase, when you want 1/32 microstepping, or when your motor supply is above 35V. It is pin-compatible with the A4988 so it fits the same boards, but you must re-set the current limit because the Vref formula is different.

Set current using the DRV8825 formula (current limit approximately equals Vref x 2 on typical 0.1 ohm-sense boards) and always fit the included heat sink; higher current makes cooling essential. A small fan is recommended for enclosed printers or continuous CNC work.

Pair it with a 4-wire bipolar stepper, an 8.2-45V supply, and firmware like Marlin, GRBL or Klipper (set the microstep and steps-per-mm correctly for the finer 1/32 mode). Keep a spare, and never hot-plug the motor while powered.

FAQ

Common questions.

How is the current limit set on a DRV8825?

Measure Vref at the trim-pot and use the DRV8825 formula -- for common 0.1 ohm sense-resistor boards the current limit is roughly Vref x 2. This differs from the A4988, so do not reuse an A4988 Vref value. Set it just below your motor's rated current.

Is it a drop-in replacement for the A4988?

Physically yes -- same StepStick pinout, same RAMPS/CNC-shield socket. But re-adjust the current limit and, if you use 1/32 microstepping, update steps-per-mm in firmware. The microstep jumper truth-table also differs slightly.

How do I get 1/32 microstepping?

Set the three mode pins M0/M1/M2 all high (or via jumpers on the board) for 1/32 step. On RAMPS/CNC shields, install all three microstep jumpers under the driver socket.

Does it need cooling?

Yes, especially above ~1.5A. Fit the included heat sink and add airflow. Without cooling it will hit thermal shutdown and pause the motor mid-move.

What motors does it drive?

Bipolar 4-wire steppers such as NEMA 17 and small NEMA 23. It does not drive unipolar motors like the 28BYJ-48 directly.

Is it stocked in India and what is included?

Yes, it is widely available in India. The package usually includes one DRV8825 module with a stick-on heat sink; motor, wiring and controller are sold separately.