L293D Motor Drive Shield Expansion Board For Arduino Uno MEGA2560 & Duemilanove

This motor driver shield expansion board has two L293D motor driver chipsets, each with 2 H-Bridges,  and can drive up to 4 bidirectional DC motors with individual 8-bit speed selection, or 2 stepper motors (unipolar or bipolar), single coil or double coil, interleaved or micro-stepping. It is ideal for building four-wheel robot platforms. The shield also comes with a 74HC595 shift register that extends 4 digital pins of the Arduino to the 8 direction control pins of the two L293D chips. The shield's 4 H-bridges provide up to 0.6A per bridge (1.2A peak) at voltages from 4.5 V to 36 V. This shield has pull down resistors to keep the motors disabled during power up. It also features a 2-pin terminal block to provide separate logic and motor external power supplies. This expansion board is compatible with Arduino Uno and Mega controllers, or other Arduino-style boards with compatible I/O pins. L293D Motor Drive Shield Features & Specifications: Up to 4 bidirectional DC motors and 4 P