Pololu 298:1 Micro Metal Gearmotor LP 6V w/ 12 CPR Encoder, Side Connector

• Pololu 298:1 Micro Metal Gearmotor LP 6V w/ 12 CPR Encoder, Side Connector
• Equipped with 12 CPR encoder
• Achieves 45 RPM at no load
• Utilizes 297.92:1 gear ratio
• Operates at 6V with low-power brushes
• Features 9 mm long D-shaped shaft

The Pololu 298:1 Micro Metal Gearmotor LP 6V w/ 12 CPR Encoder, Side 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 integrates 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 adjusted by the gearbox reduction factor to determine the gearbox output shaft's CPR.

The encoder is equipped with a 6-pin JST SH-style male connector, compatible with corresponding cables and connector boards. The side connector orientation is perpendicular to the motor. The motor terminals are accessible via red and black wires, and 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, driven low or pulled to Vcc, depending on motor orientation. These signals are square waves with 50% duty cycles and are approximately 90° out of phase, indicating motor direction and speed.

The motor operates at 6 V with low-power precious metal brushes, achieving a no-load performance of 45 RPM at 40 mA. It has a stall extrapolation of 2.0 kg⋅cm and 0.36 A. The gear ratio is 297.92:1, utilizing brass plates.