This is essentially a ramped up version of our Ardumoto motor driver shield.
For this monster shield we've replaced the L298 H-bridge with a pair of VNH2SP30 full-bridge motor drivers.
We've also beefed up the support circuitry so this board is capable of driving a pair of high-current motors.
The VIN and motor out are pitched for our 5mm screw terminals (not included), making it easy to connect larger gauge wires.
Voltage max: 16V
Maximum current rating: 30 A
Practical Continuous Current: 14 A
Current sensing available to Arduino analog pin
MOSFET on-resistance: 19 mΩ (per leg)
Maximum PWM frequency: 20 kHz
Undervoltage and Overvoltage shutdown