Designed to accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoides, DC and stepping motors) and switching power transistors.To simplify use as two bridges each pair of channels is equipped with an enable input.A separate supply input is provided for the logic, allowing operation at a lower voltage and internal clamp diodes are included.This device is suitable for use in switching applications at frequencies up to 5 kHz.

Features
* 2 5V servo motor (servo) ports connected to Arduino's high-resolution and high-precision timer - no jitter.
* Up to 4 bidirectional DC motors and 4-channel PWM speed regulation (about 0.5% resolution).
* Forward and reverse control of up to 2 stepper motors, single/double step control, staggered or micro-stepping and rotation angle control.
* 4-way H-bridge: Each bridge of the L293D chip provides .0.6A (peak 1.2A) current and has thermal power-off protection, 4.5V to 36V.
* The pull-down resistor ensures that the motor remains stopped when powered on.
*Large terminal terminal blocks make wiring easier (10 - 22AWG) and power supply.
* Comes with for Arduino reset button.
* 2 large terminal external power supply terminal blocks ensure separation of logic and motor drive power.
* Compatible with Mega, Diecimila, & Duemilanove.

Package Includes:
2 x L293D Motor Driver Expansion Board
2 x DC female cable
20 x Male and female cable