TB6612 Dual Stepper and DC Motor Shield for Arduino
Control DC motors and stepper motors using the TB6612 Dual Stepper and DC Motor Shield for Arduino from PMD Way. Some may say, this is the ultimate when it comes to motor shields for Arduino.
You can control up to four DC motors, or two stepper motors - and two servos. Or one stepper and two DC motors, etc, You get the idea.
The shield arrives fully-assembled and is Uno R3-compatible, so you have the extra SDA and SCL (for the I2C bus) pins on the top-left stacking header.
This shield is based on an open-source design by adafruit industries.