The ULN2003 is a high-voltage, high-current Darlington array that can be used to drive a variety of loads, including relays, solenoids, and motors. It is capable of driving up to 500mA per channel, making it well-suited for driving low-power motors. The ULN2003 has five input lines and four output lines, allowing it to control up to four separate devices. It is designed to be used with a 5V supply voltage and can operate at temperatures ranging from -40°C to 125°C. The 28BYJ-48 motor is a small, low-cost, 5V unipolar stepper motor that is often used in small-scale robotics and automation projects. When used with the ULN2003, the motor can be easily controlled using pulse-width modulation (PWM) or digital inputs. This stepper motor driver board ULN2003 is well designed for Arduino.
