Motor Driver Shield

Motor driver shield for Arduino - compatible with the Adafruit motor driver library.
The board includes two L293D motor drivers and one 74HC595 shift register which can control up to four bi-directional DC motors with individual speed control, two stepper motors with single coil, double coil, interleaved or micro-stepping, or two 5V servos.
Motors can be supplied via the Arduino or via an external power supply wired to the terminal block marked EXT_PWR - note that in the latter case the power jumper should be removed to protect the Arduino.
More information and example programs available from http://playground.arduino.cc/Main/AdafruitMotorShield