Pololu DRV8434A Stepper Motor Driver Carrier
Description
- Pololu DRV8434A Stepper Motor Driver Carrier
- Offers micro stepping down to a 1/256-step
- Operates within a 4.5 to 48 V voltage range
- Features integrated stall detection for efficiency
- Provides built-in protection against under-voltage, over-current, and over-temperature
- Compatible with popular A4988 carriers
The Pololu DRV8434A Stepper Motor Driver Carrier is a breakout board designed for Texas Instruments' DRV8434A micro stepping bipolar stepper motor driver. This device offers micro-stepping capabilities down to a 1/256 step and operates within a voltage range of 4.5 to 48 V. It is capable of delivering approximately 1.2 A continuously per phase without the need for a heat sink or forced airflow and can peak at 2 A.
The driver is equipped with integrated stall detection and employs a ripple control algorithm. This feature allows for precise regulation of the current level, thereby enhancing the efficiency of the motor. The module's pinout and interface bear a striking resemblance to the popular A4988 carriers, making it a suitable replacement for those boards in a variety of applications.

The device also comes with built-in protection against under-voltage, over-current, and over-temperature conditions, ensuring safe and reliable operation.
Please note that despite its robust design, the device should be operated within the specified voltage and current limits to prevent damage due to under-voltage, over-current, or over-temperature conditions.
- 1x DRV8434A Stepper Motor Driver Carrier
- 1x16-Pin Breakaway 0.1-inch Male Header

- 0.6 x 0.8 inch
- Minimum operating voltage: 4.5 V
- Maximum operating voltage: 48 V
- Continuous current per phase: 1.2 A
- Maximum current per phase: 2 A
- Minimum logic voltage: 1.8 V
- Maximum logic voltage: 5.5 V
- Microstep resolutions: full with 100% current, full with 70% current, non-circular 1/2, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64, 1/128, 1/256
- Current limit control: potentiometer
- Reverse voltage protection: No
- Header pins soldered: No
Estimate shipping
Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorisation (RA) before initiating a return request.
United Kingdom consumers exercising their statutory Right of Cancellation are subject to different conditions. See the Statutory Right of Cancellation.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
- A valid Return Authorisation (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
- Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
- Refunds are processed within 7 days after receipt and inspection of the returned item.
- A £100 cleaning fee may apply to domestic robots returned in used or unclean condition.
- A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
- Consumables * — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tyres, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
- Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
- Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odour-absorbing products). Not eligible for return once unsealed.
- Build-it-yourself products and items requiring customer assembly * — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
- Digital Goods, Software, and Apps * — Final sale only, due to licensing restrictions.
- Clearance Items * — Products identified as clearance or final sale, including end-of-life or discontinued items.
- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items * — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfil a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
* United-Kingdom consumers retain their statutory Right of Cancellation on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Cancellation, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorisation (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
- Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".