I am trying to plan out a project using Arduino that involves using 4 dc motors. I have no idea how I am supposed to connect 4 dc motors to my Arduino, I am using the Arduino Uno. I am sure I need to use the motor shield but that only controls 2 dc motors when I need it to control 4 dc motors. Is there any way to control 4 dc motors without having 2 Arduino Uno's? Any help would be appreciated. Thanks.