Pololu 250:1 Micro Metal Gearmotor HPCB 12V w/ 12 CPR Encoder, Side Connector

• Pololu 250:1 Micro Metal Gearmotor HPCB 12V w/ 12 CPR Encoder, Side Connector
• Features a compact gearbox with 10×12 mm cross-section
• Includes a 12 CPR quadrature encoder with side connector
• Operates at 12 V with 130 RPM no-load performance
• Provides 3.0 kg⋅cm stall torque with 248.98:1 gear ratio
• Utilizes brass gear plates for enhanced durability

The Pololu 250:1 Micro Metal Gearmotor HPCB 12V w/ 12 CPR Encoder, Side Connector is a compact brushed DC motor equipped with a metal gearbox. It features a gearbox cross-section of 10×12 mm and a D-shaped output shaft measuring 9 mm in length and 3 mm in diameter. This gearmotor is integrated with a two-channel incremental Hall effect encoder, which detects the rotation of a magnetic disk attached to 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 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, ensuring versatile mounting options. The motor terminals are accessible via red and black wires, and the motor is designed to operate in both directions by alternating the power polarity. The sensors are powered through designated 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, with built-in hysteresis to prevent signal interference. These signals are square waves with a 50% duty cycle and are approximately 90° out of phase. The motor operates at 12 V, with a no-load performance of 130 RPM and 80 mA, and a stall torque of 3.0 kg⋅cm. The gear ratio is 248.98:1, featuring brass plates.