ULN2003 Stepper Motor Driver Module

The ULN2003 Stepper Motor Driver Module is a compact driver board based on the ULN2003A Darlington transistor array, designed primarily for controlling small unipolar stepper motors such as the popular 28BYJ-48. The board provides IN1–IN4 control inputs, a dedicated motor connector and four onboard LED indicators that show the active motor phases. It allows a microcontroller such as Arduino to control the motor without directly supplying the motor-coil current from its GPIO pins.