28BYJ-48 5V Stepper Motor with ULN2003 Driver Module — 4-Phase, 4096 Steps/Rev, Arduino

28BYJ-48 5V Stepper Motor with ULN2003 Driver Module — 4-Phase, Arduino

The 28BYJ-48 stepper motor with ULN2003 driver board is the most popular beginner stepper motor kit for Arduino — affordable, easy to control, and precise enough for most positioning applications. The 28BYJ-48 is a 4-phase unipolar stepper motor with a built-in gear reduction of approximately 1:64, giving it high torque and fine angular resolution. The ULN2003 driver board amplifies Arduino GPIO signals to drive the motor coils.

Motor Specifications (28BYJ-48)

• Type: 4-phase unipolar stepper motor
• Operating Voltage: 5V DC
• Step Angle: 5.625° per step (before gear reduction)
• Gear Ratio: ~1:64
• Steps per Revolution: 4096 steps (full step mode)
• Coil Resistance: ~50Ω per phase

Driver Board (ULN2003)

• Driver IC: ULN2003A Darlington array
• Inputs: IN1–IN4 from Arduino digital pins
• LED Indicators: 4 LEDs show coil activation sequence
• Power: Separate 5V input recommended for sustained use

Arduino Wiring

• IN1 → D8 | IN2 → D9 | IN3 → D10 | IN4 → D11
• Motor VCC → 5V (external supply recommended)
• Use Arduino Stepper or AccelStepper library
• 4096 steps = 1 full revolution in full-step mode

Typical Applications

• Camera pan-tilt mechanism
• Valve and damper position control
• Clock hand and dial movement
• Small CNC and plotter axis drive
• Automated blind and curtain control

28BYJ-48 5V stepper motor with ULN2003 driver — 4-phase, 4096 steps/rev, gear-reduced for Arduino precision positioning and automation projects.