This shield makes it easy to control two brushed DC motors with your Arduino or Arduino-compatible board. Its dual MC33926 motor drivers operate from 5 to 28 V and can deliver a continuous 3 A per motor. These great drivers also offer current-sense feedback and accept ultrasonic PWM frequencies for quieter operation. The Arduino pin mappings can all be customized if the defaults are not convenient, and the motor driver control lines are broken out along the left side of the shield for general-purpose use without an Arduino.
Documentation and other information
Pololu Dual MC33926 Motor Driver Shield User’s Guide (Printable PDF: dual_mc33926_motor_driver_shield.pdf)
User’s manual for the Pololu Dual MC33926 Motor Driver Shield for Arduinos.