This compact expansion board plugs directly into the GPIO header on a Raspberry Pi B+, A+, or Pi 2 and provides an easy and low-cost solution for driving a pair of small brushed DC motors. Pololu 2753

Pololu High-Power Motor Driver 36v20 CS

This add-on board makes it easy to control two high-power DC motors with a Raspberry Pi. Its twin discrete MOSFET H-bridges support a wide 6.5 V to 36 Voperating range and are efficient enough to deliver a continuous 14 A without a heat sink. The drivers offer basic current limiting functionality, and they accept ultrasonic PWM frequencies for quieter operation.

The X-NUCLEO-IHM12A1 is a low voltage dual brush DC motor driver expansion board based on the STSPIN240 for STM32 Nucleo. It provides an affordable and easy-to-use solution for the implementation of portable motor driving applications such as thermal printers, robotics and toys

This compact breakout board for Maxim’s MAX14870 motor driver offers a wide operating voltage range of 4.5 V to 36 V and can deliver a continuous 1.7 A (2.5 A peak) to a single brushed DC motor. It features a simple two-pin speed/direction interface and built-in protection against reverse-voltage, under-voltage, over-current, and over-temperature.

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

Pololu Simple High-Power Motor Controller 24v12 (Fully Assembled)

This discrete MOSFET H-bridge motor driver enables bidirectional control of one high-power DC brushed motor. The small 1.3″ × 0.8″ board supports a wide 6.5 V to 40 V voltage range and is efficient enough to deliver a continuous 21 A without a heat sink.

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

This compact breakout board is for ROHM’s BD65496MUV motor driver, which offers an operating voltage range of 2 V to 16 V and can deliver a continuous 1.2 A to a single brushed DC motor. Pololu 2960

Raspberry Pi Expansion Board, DC Motor / Stepper Motor Driver

Pololu Simple Motor Controller 18v7 (Fully Assembled)

ESC RC controller module with FlySky receiver designed for two brush motors with a supply voltage from 2.5 to 5 V and a current consumption of 2 A

Pololu Low-Voltage Dual Serial Motor Controller

Module with two DRV8830 DC motor drivers. The board is equipped with a Grove connector and communicates via the I2C interface. Seeed Studio 105020010

Dual VNH2SP30 Motor Driver Carrier MD03A

The RoboClaw motor controller can control a pair of brushed DC motors using USB serial, TTL serial, RC or analog inputs. Integrated dual quadrature decoders make it easy to create a closed-loop speed control system. This version can supply a continuous 7.5 A per channel (15 A peak). Pololu 3284

BOB-11890

Two-channel DC motor driver communicating via UART, SPI or I2C interface. It can control the movement of 3 to 11V motors with a maximum continuous current of 1.2A per channel. SparkFun ROB-13911

Dual motor controller allowing two DC motors to be driven with voltages from 4.5 to 13.5V and a continuous current of 1.2 A per channel. SparkFun ROB-14450