This breadboard-compatible module is an alternative to bulky power switches. It uses a small integrated slide switch to control a high-side power MOSFET that can deliver continuous currents up to around 8 A at 4.5 V to 40 V. Pololu 2814

The sensors operate from 2.7 V to 18 V and provide digital outputs that can be connected directly to a microcontroller or other digital circuit. This module is compatible with all of the Pololu dual-shaft mini plastic gearmotors. Pololu 1523

This power distribution board is designed specifically for the Romi chassis as a convenient way to access the chassis’s battery power and pass that on the rest of the electronics that make up your robot. Pololu 3541  

This black anodized aluminum bracket lets you securely mount typical NEMA 17-size stepper motors to your project. The bracket features several slots and holes for a wide variety of mounting solutions, and four M3×6mm screws are included for securing the motor to the bracket. Pololu 2266

Replacement sprockets set for the Zumo robot in white. The kit includes two drive sprockets and two idle sprockets. The gears fit both Zumo V1.2 and Zumo 32U4 robots. Pololu 3129

Dual MAX14870 Motor Driver is a dual DC motor controller compatible with the Arduino standard that allows you to control two DC motors with 4.5 ... 36V continuous current of 1.7A. Polol 2519

Dual MAX14870 Motor Driver is a dual DC driver compatible with Raspberry Pi that allows you to control two DC motors with 4.5-36V continuous current of 1.7A. Pololu 3759

ual MAX14870 Motor Driver is a dual DC motor driver compatible with the Raspberry Pi standard that allows you to control two DC motors with 4.5 ... 36V continuous current of 1.7A. Pololu 3758

A set with a support ball designed for the Balboa 32U4 robot. It allows you to transform the Balboa balancing robot chassis into a traditional platform with a differential and a support ball. Pololu 3272

Module with 5 balancing sensors for Balboa 32U4 balancing robot. Pololu 3577

Control board for the Balboa 32U4 robot. It is part of Balboa 32U4 Balancing Robot Kit. Pololu 3576

A circuit board compatible with Arduino with Atmega32U4 microcontroller and step-up / step-down converter. Version without soldered through elements. Polol 4005