High-power brushed DC motor, 120:1 reduction gearbox, intended for operation at 4.5 V, 9.7mm-long gearbox, 3 mm-diameter D-shaped output shaft that is offset from but parallel to the motor shaft, built-in safety clutch. Pololu 1512

These 20 mm long aluminum adapters convert a 6 mm diameter shaft to a 12 mm hex shaft that is compatible with many common hobby RC wheels. Pololu 2686

This shield allows you to interface Wixel wireless modules to your Arduino (and other compatible products), enabling simple wireless programming, debugging, and control using standard Arduino software. Pololu 2513

This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 4.995:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. Pololu 3060

This simple board breaks out all five pins of a USB Micro-B connector to a 0.1″ pin spacing that is compatible with standard perfboards, solderless breadboards, and 0.1″ connectors. Pololu 2586

This gearmotor is a miniature high-power, 6 V brushed DC motor with long-life carbon brushes and a 75.81:1 metal gearbox. It has a cross section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. Pololu 3064

The mountings allow the engine to be mounted on the Romi Chassis chassis. The motor is snap-fitted, which facilitates its quick assembly. The fixings are in black. Pololu 3520

Support ball with fixing, designed for Romi Chassis chassis. Pololu 3534

The mountings allow the engine to be mounted on the Romi Chassis chassis. The motor is snap-fitted, which facilitates its quick assembly. The fixings are in blue. Pololu 3526

Support ball with fixing, designed for Romi Chassis chassis. Pololu 3536

Chassis Romi Chassis Kit is the ideal base for building a small mobile robot. The set contains all the necessary mechanical elements for building a mobile circular robot. Self-assembly set. Polol 3504

Chassis Romi Chassis Kit is the ideal base for building a small mobile robot. The set contains all the necessary mechanical elements for building a mobile circular robot. Self-assembly set. Polol 3506