The Hoby Components high power motor drive shield (MonsterMoto compatible) is based on the Sparkfun reference design and uses two ST Microlectronics VNH2SP30-E full bridge high power motor drivers to independently control the speed and direction of two DC motors. The pinout of the shield means that each motor can be directionally controlled with two DI0 pins, and its speed easily controlled using a single Arduino analogWrite() command (see our exclusive sketch in our support forum). 

Specification:

Max motor supply voltage: 16V
Max instantaneous current: 30A*
Max continuous current: 14A*
Max PWM frequency: 20KHz
Current sensing linked to Arduino analogue pins
On-resistance: 19 mΩ (per leg)
Safety shut-down features including thermal overload, under and over voltage protection

PLEASE NOTE: When using the shield at its maximum current and voltage specifications, additional heat sinks may be required

Sketch and download available after purchase.