This small, inexpensive motor controller allows variable speed and direction control of two small, brushed DC motors using a simple serial interface, making it easy to add motors to your microcontroller- or computer-based project. The motor supply voltage range is 4.5 to 13.5 V; the continuous current per channel is up to 1 A (3 A peak). The logic supply can be as low as 2.7 V, allowing operation with modern microcontrollers running at 3.3 V

Specifications:
Motor channels:2
Motor supply voltage:4.5 – 13.5 V
Continuous output current per channel:1 A
Peak output current per channel:3 A
Auto-detect baud rate range:1200 – 38400 bps
Fixed baud rate:38400 bps
Available PWM frequencies:31.5 kHz, 15.7 kHz, 7.8 kHz, 3.9 kHz
Logic supply voltage:2.7 – 5.5 V
Logic supply current:< 15 mA
Reverse voltage protection?:Yes(on motor supply only)
Motor driver:TB6612FNG
More info:http://www.pololu.com/catalog/product/1110