SparkFun's MiniMoto board is an I2C-based DC motor driver. It's designed to be used in a system with up to 8 additional MiniMotos, all on the same data lines. Amazon.com : Paul Minimoto Mini V-Brake - Black : Bike Brakes : Sports & Outdoors. Once I watched the youtube video on how to adjust them, it was a breeze. BOB-11890: The SparkFun MiniMoto is a great little breakout for the DRV8830 I2C DC motor driver. The MiniMoto is great for driving most small robotics.