Stepper Motor ULN2003 Driver Module
35.00 EGP
The ULN2003 Stepper Motor Driver Module is a compact and affordable driver board designed to control 5V-12V unipolar stepper motors (typically 28BYJ-48 type). It features the ULN2003 Darlington transistor array, providing sufficient current (up to 500mA per coil) to drive small to medium stepper motors.
This module is widely used in 3D printers, CNC machines, robotics, and DIY automation projects, offering a simple interface for microcontrollers like Arduino, Raspberry Pi, and ESP8266/ESP32.
Description
🔑 Key Features
✅ Compatible with 5V-12V Unipolar Stepper Motors (e.g., 28BYJ-48).
✅ ULN2003 Darlington Array – Drives up to 500mA per coil.
✅ Onboard LED Indicators – Shows coil activation status.
✅ 4-Phase Control – Supports full-step, half-step, and wave-drive modes.
✅ Easy Microcontroller Interface – Works with 5V/3.3V logic (Arduino, RPi, etc.).
✅ Built-in Flyback Diodes – Protects against back EMF.
✅ Compact & Breadboard-Friendly – Includes male headers for easy connections.
📊 Technical Specifications
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Operating Voltage: 5V-12V DC (Motor power supply).
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Output Current: Up to 500mA per coil (ULN2003 limit).
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Compatible Motors: 5-wire/6-wire unipolar steppers (e.g., 28BYJ-48).
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Control Interface: 4 digital input pins (IN1-IN4).
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Step Modes: Full-step, half-step, wave drive (software-controlled).
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Dimensions: ~31mm × 35mm.
🔌 Wiring & Connections
1. Motor Connections
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Connect the 5-wire stepper motor to the 5-pin header (labeled).
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Red wire (common +V) → Center tap (if using 6-wire, check datasheet).
2. Power & Control
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+5V to +12V (Motor Power) → VCC & GND (External power supply).
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IN1, IN2, IN3, IN4 → Connect to MCU digital pins (e.g., Arduino D8-D11).
⚠ Note:
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If using 28BYJ-48 (5V motor), power with 5V.
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For higher torque, use 12V (if motor supports it).
🛠 Applications
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3D printer axis control (small extruders).
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Camera sliders & pan-tilt mechanisms.
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Robotic arm joints.
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Automated blinds & small CNC machines.
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DIY clock mechanisms.
📦 Package Includes
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1× ULN2003 Stepper Motor Driver Board.
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