ULN2003 Stepper Driver Board

Simple driver board commonly paired with 28BYJ-48 steppers.

Stepper DriverRM3-RM10Beginner

Arduino ✓ESP32 ✓28BYJ-48 Stepper ✓

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ULN2003 Stepper Driver Board electronics module illustration

AI Ready Overview

Quick Summary

ULN2003 is a stepper driver commonly used in FYP and embedded projects. It is best for small stepper demo and mini turntable, with wiring and testing planned around Arduino, ESP32, 28BYJ-48 Stepper.

Difficulty

Beginner

Time Required

1-3 days for basic wiring and sample code; 1 week if used inside a complete FYP prototype

Cost

RM3-RM10 module range in Malaysia; full project cost depends on scope.

Components

ULN2003, Arduino, ESP32, 28BYJ-48 Stepper

Overview

What is ULN2003?

ULN2003 driver boards are used to drive 28BYJ-48 geared stepper motors from microcontroller GPIO pins. They are beginner-friendly for low-speed positioning demos.

Engineering Reference

Quick Specs

Operating Voltage	5V motor supply / 3.3V/5V logic
Interface	GPIO
Difficulty	Beginner
Typical Malaysia Price	RM3-RM10
Best For	Small stepper demo, Mini turntable

Real Usage Notes

Suitable / Not Suitable

Suitable for

✓ Small stepper demo
✓ Mini turntable
✓ Flap or valve prototype

Not suitable for

✕ NEMA17 motors
✕ High torque
✕ Fast motion

Build Planning

Difficulty

ULN2003 is rated Beginner. Plan around 1-3 days for basic wiring and sample code; 1 week if used inside a complete fyp prototypedepending on wiring, libraries, calibration, dashboard/app integration and testing evidence.

Build Planning

Time Required

1-3 days for basic wiring and sample code; 1 week if used inside a complete FYP prototype

Malaysia Price Guidance

Cost

Typical module price range: RM3-RM10. This is component guidance only; a complete FYP cost depends on controller, sensors, casing, display, app/dashboard, documentation and timeline.

Connections

Connection overview

Module revisions can use different connector names and electrical limits. Treat this as a planning overview and verify the exact board marking, manufacturer datasheet and seller documentation before wiring.

Power

Use only a supply supported by the exact board or module variant. Common listings for this part mention 5V motor supply or 3.3V/5V logic.

Ground

Connect a common ground between the controller, module and any external supply.

Primary interface

Plan for GPIO; confirm the exact terminal names in the manufacturer documentation.

Variant-specific connections

Connector names and optional pins can differ between breakout-board revisions.

Platform Notes

Wiring Guides

ULN2003 with Arduino / ESP32

This is a planning overview, not a board-specific pin map. Confirm the exact module revision, supply limits and GPIO terminals in its datasheet before wiring. Use suitable level shifting when logic voltages differ.

Power	Confirm against the exact board; listed variants commonly use 5V motor supply / 3.3V/5V logic
Ground	Common ground with the controller
Interface	GPIO (exact pins vary by module)

Fix Common Problems