L293D MOTOR DRIVE EXPANSION SHIELD FOR ARDUINO®

Product description

This motor shield contains two motor drivers and a 74HC595 shift register and extends the pins on the Arduino from 3 to 8, which allows controlling the direction for the motor drivers.

Features
two L293D motor driver chips
four H-bridges
0.6 A per bridge (1.2 A peak)
thermal shutdown protection
internal kickback protection diodes
up to 4 bi-directional DC motors
up to 2 stepper motors
pull down resistors to keep motors disabled during power-up
separate logic and motor power connections
terminal block connectors for motors and power
motor voltages from 4.5 VDC to 16 VDC
2 connections for 5 V hobby servos
Specifications
dimensions: 6.8 cm x 5.5 cm x 2 cm

Pin Layout
All 6 analogue input pins are available. They can also be used as digital pins (pins #14 through 19)
digital pin function
#2, #13 not used
Following pins are only used if the DC/stepper is in use:
digital pin function
#11 DC motor #1/stepper #1 (activation/speed control)
#3 DC motor #2/stepper #1 (activation/speed control)
#5 DC motor #3/stepper #2 (activation/speed control)
#6 DC motor #4/stepper #2 (activation/speed control)
Following pins are only used if any DC/steppers are in use:
digital pin function
#4, #7, #8, #12 driving the DC/stepper motors via the 74HC595 serial-to-parallel latch
Following pins are only used if that particular servo is in use:
digital pin function
#9 servo #1 control
#10 servo #2 control

L293D Data Sheet

Data Sheet