The ULN2003 Stepper Motor Driver Module provides a direct drive interface between your microcontroller
and stepper motor. The Module provides 4 inputs for connection to your microcontroller, power supply
connection for the stepper motor voltage, and ON/OFF jumper, a direct connect stepper motor header
and 4 LEDs to indicate stepping state

Operation
The driver board accepts a four bit command from any microcontroller and in turn applies the necessary power
pulse to step the motor. At the heart of the driver is a ULN2003AN integrated circuit. The board can supply
between 5V to 12V to the motor from an independent power supply. It also has a bank of LED’s that correspond
to the input signals received from the controller. They provide a nice visual when stepping.