http://www.robotmarketplace.com/products/sabertooth_speed_controllers.html Dimension Engineering’s Sabertooth dual motor speed controllers are a versatile, easy way to independently control two motors. They’re available in 2 x 5 Amp, 2 x 10 Amp, 2 x 25 Amp, and 2 x 50 Amp versions, each with the same great features and functionality for reliable operationContinue Reading