Pololu Jrk G2 27A 6.5-30V USB Motor Controller w/ Feedback
Operate from 6.5 V to 30 V
Deliver 27 A without heat sink
Support USB, TTL serial, I²C, analog, RC
Include reversed-power protection
Feature ultrasonic 20 kHz PWM
The Pololu Jrk G2 27A 6.5-30V USB Motor Controller w/ Feedback is a versatile module designed for closed-loop speed or position control of brushed DC motors. It offers quick configuration via USB using free software, and supports five control interfaces: USB, TTL serial, I²C, analog voltage, and hobby radio control (RC). With an operating range of 6.5 V to 30 V, it delivers continuous output currents up to 27 A without a heat sink. The controller features integrated support for analog voltage or tachometer feedback, ultrasonic 20 kHz PWM for quieter operation, and configurable parameters such as PID coefficients and maximum current. It includes a 0.1″ breakaway male header strip and two 2-pin 5mm terminal blocks for custom installations. The compact dimensions of 1.7″ × 1.2″ make it suitable for a variety of projects. Additional features include reversed-power protection, field-upgradeable firmware, and an Arduino library for easy integration with compatible boards.
1x Pololu Jrk G2 27A 6.5-30V USB Motor Controller w/ Feedback
1x 0.1″ Breakaway male header strip
2x 2-pin 5mm terminal block
1.7 x 1.2 inches
Operates from 6.5 V to 30 V
Continuous output current of 27 A without a heat sink
Supports USB, TTL serial, I²C, analog voltage, and RC control interfaces
Feedback options: Analog voltage (0 V to 5 V) and frequency
Ultrasonic 20 kHz PWM for quieter operation
Configurable parameters include PID period and coefficients, maximum current, duty cycle, acceleration, and deceleration
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.
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 Authorization (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, tires, 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, odor-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 fulfill a customer request.
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]".
