Arduino Engine shield

The Arduino Motor Shield is based on the L298 (datasheet), a dual full-bridge driver designed to drive inductive loads such as relays, solenoids, DC and stepper motors.
It allows you to control two DC motors with your Arduino board and independently control the speed and direction of each.
You can also measure the motor current absorption of each motor, among other things.
The shield is compatible with TinkerKit, which means you can quickly create projects by connecting TinkerKit modules to the board