The 28BYJ-48 5V Stepper Motor with ULN2003 Driver Board is the perfect entry point for projects requiring precise rotational movement. At Electrapac, we recommend this kit for hobbyists and students building robotic arms, automatic blinds, or small CNC machines where high-torque and position control are essential.

Product Overview

The 28BYJ-48 is a 4-phase, 5-wire geared stepper motor. Unlike standard DC motors, it moves in discrete "steps," allowing you to control the exact angle of rotation without needing an external encoder. Included in this set is the ULN2003 Driver Board, which uses a high-current Darlington array to amplify the low-power signals from your Arduino or Raspberry Pi to drive the motor's coils.

Key Features for Electrapac Customers

• Precise Positioning: The 1/64 gear reduction ratio provides high torque and ensures that the motor can hold its position firmly even when powered down.

• Visual Feedback: The ULN2003 driver board features four on-board LEDs that flash in sequence with the motor's internal coils, making it easy to troubleshoot your code.

• Plug-and-Play Wiring: The motor comes with a pre-crimped 5-pin JST connector that plugs directly into the driver board, eliminating the risk of incorrect wiring.

• Quiet Operation: Designed for smooth, low-noise rotation, making it ideal for indoor automation projects.

• Universal Compatibility: Works seamlessly with the standard Stepper.h or AccelStepper libraries in the Arduino IDE.

Wiring & Setup Guide

To get your project moving with hardware from www.electrapac.com:

1. Motor to Driver: Plug the white 5-pin connector from the motor into the white socket on the ULN2003 board.

2. Driver to Arduino:

   • IN1, IN2, IN3, IN4: Connect to four digital pins on your Arduino (e.g., Pins 8, 9, 10, 11).

   • VCC: Connect to a 5V supply (external power is recommended if driving multiple motors).

   • GND: Connect to the Arduino Ground.

Primary Applications

• Robotics: Controlling the joints of small robotic arms or the steering of rovers.

• Home Automation: Motorizing window blinds, camera sliders, or rotating display stands.

• Precision Valves: Opening and closing vents or fluid control valves in DIY laboratory setups.

• Learning Tool: The best way to learn about 4-phase motor logic and sequential pulse-width modulation.

Why Shop at Electrapac?

We source the 28BYJ-48 Stepper Kits with high-quality internal gears to ensure long-term durability and minimal backlash. At www.electrapac.com, we provide the precision motion components that help your projects move exactly the way you programmed them.

https://www.technobotsonline.com/Datasheets3/1402-059.pdf