Pololu 250:1 Micro Metal Gearmotor HP 6V w/ 12 CPR Encoder, Back Connector
Features compact 10×12 mm metal gearbox
Includes 12 CPR encoder for precision
Operates with 6 V, 248.98:1 gear ratio
Supports bidirectional control
Uses 6-pin JST SH-style connector
The Pololu 250:1 Micro Metal Gearmotor HP 6V w/ 12 CPR Encoder, Back Connector is a compact brushed DC motor equipped with a metal gearbox. It features a 10×12 mm gearbox cross-section and a 9 mm long, 3 mm diameter D-shaped output shaft. This gearmotor is integrated with a two-channel incremental Hall effect encoder, which detects the rotation of a magnetic disk on the motor shaft's rear protrusion. The encoder provides a resolution of 12 counts per revolution (CPR) of the motor shaft, which can be multiplied by the gearbox reduction factor to determine the CPR of the gearbox output shaft.
The encoder is equipped with a 6-pin JST SH-style male connector, compatible with corresponding cables and connector boards. The Back Connector orientation is parallel to the motor. The motor terminals are accessible via red and black wires when used with appropriate JST cables, with M1 always connecting to the motor terminal marked with a “+”. This motor is designed to operate in both directions by alternating the polarity of the power to the motor leads.
The sensors are powered through Vcc and GND pins, with Vcc ranging from 2.7 V to 18 V. The quadrature outputs A and B are digital signals that indicate motor direction and speed. These signals are square waves with a 50% duty cycle and are approximately 90° out of phase. The built-in hysteresis in the sensors’ comparators prevents spurious signals near transition points.
1x Pololu 250:1 Micro Metal Gearmotor HP 6V w/ 12 CPR Encoder, Back Connector
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This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
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.
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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.
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Return Exceptions
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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.
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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.
* 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.
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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]".
