ULN2003 Stepper Motor Driver Board Module

If you have a 28BYJ-48 stepper motor but lost the driver , this is the replacement you need. This board is built around the ULN2003 Darlington Transistor Array, which amplifies the weak signals from your Arduino to the higher currents needed to drive a motor. It features a standard white JST socket that fits most small stepper motors perfectly. It also includes four red LEDs (labeled A, B, C, D) that light up in sequence as the coils fire, making it incredibly easy to visualize the stepping sequence and troubleshoot your code.