Pololu - 2737

Atmel ATmega32U4 microcontroller comes preloaded with an Arduino-compatible bootloader, and the board includes dual motor drivers that can deliver 1.7 A per channel to two brushed DC motors. Pololu 3119

The core of a small robot, either as an auxiliary controller atop a Raspberry Pi base or as a complete control solution on its own. Its Atmel ATmega32U4 microcontroller comes preloaded with an Arduino-compatible bootloader. This version does not include any through-hole components or connectors, allowing for customized assembly or standalone use. Pololu 3118

DRV8825 Stepper Motor Driver Carrier is a DRV8825 stepper motor driver that allows you to supply a bipolar current of up to 1.5 A per phase, without using a heat sink. The system can be supplied with voltage up to 45V, in the set there is a heat sink. It is compatible with Polol 2133

The stepper motor driver with Allegro A4988 (A4988 Stepper Motor Driver Carrier) allows you to supply a bipolar current of up to 2A per phase. The system can be supplied with voltage up to 35V, in the set there is a heat sink. It is compatible with Polol 1182

Tiny, cylindrical gearmotor consists of a coreless brushed DC motor and a 136:1 plastic planetary gearbox. 500 RPM and 45 mA free-run, 8 oz-in (0.6 kg-cm) and 400 mA stall. Pololu 2358

Black Edition offers adjustable current limiting, over-current and over-temperature protection, and five different microstep resolutions. It operates from 8 V to 35 V and can deliver up to 2 A per coil with sufficient additional cooling. Pololu 2128

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