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Pricelist: Retail Price (B2C) Pricelist
ULN2003 Driver Module - 5V-12V Stepper Motor Controller Board for Arduino & Raspberry Pi

ULN2003 Driver Module - 5V-12V Stepper Motor Controller Board for Arduino & Raspberry Pi

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ComponentDriver ICSupply VoltageMax CurrentLogic LevelInput ChannelsLED Indicators
ValueULN2003A5V - 12V DC500mA/Channel3.3V - 5V4 (IN1 - IN4)4-Phase (A-D)
ComponentMotor PortInterfaceMountingProtectionWeightDimensions
ValueXH-5P Socket4-Pin Header3mm HoleInternal Diodes10 grams40.5 x 21.3 mm
Price
₹ 50.85 ₹ 50.85
(Tax included)

Product Description The ULN2003 Stepper Motor Driver Board is a compact and efficient solution for controlling small 4-phase 5-wire stepper motors, such as the widely used 28BYJ-48. At its core is the ULN2003A high-voltage, high-current Darlington transistor array, which allows a low-power microcontroller to drive high-current inductive loads. The board features a standardized 5-pin XH-series connector for plug-and-play motor connection and a 4-pin header for easy interfacing with Arduino, ESP32, or Raspberry Pi. With its integrated status LEDs, users can visually monitor the step sequence in real-time, making it an excellent choice for robotics, automated blinds, and educational mechatronics projects.

Key Features

  • Darlington Array Efficiency: Utilizes seven Silicon NPN Darlington pairs, capable of handling high-voltage outputs and large peak currents.

  • Real-time Monitoring: Equipped with four onboard LEDs (A, B, C, D) that blink according to the pulse sequence, simplifying code debugging.

  • Direct Motor Connection: Includes a pre-soldered 5-pin socket specifically designed to fit the standard 28BYJ-48 stepper motor connector.

  • Integrated Protection: Features internal clamp diodes for inductive load switching, protecting your microcontroller from back-EMF spikes.

  • Wide Voltage Range: Supports motor power supplies from 5V up to 12V, allowing flexibility for different motor torque requirements

Technical Details

  • Internal Circuitry: Each channel consists of a Darlington pair with a high-voltage output and common-cathode clamp diodes.

  • Current Handling: Capable of 500mA continuous current per channel, with peak currents reaching up to 600mA.

  • Logic Compatibility: Resistor-equipped inputs allow direct connection to 3.3V (CMOS) and 5V (TTL) logic levels without external components.

  • Inductive Kickback Protection: Integrated suppression diodes eliminate the need for external flyback diodes when driving motors or relays.

  • Power Input Pins: Dedicated VCC and GND pins for the motor power supply, separate from the microcontroller's logic power.

  • Parallel Capability: Outputs can be paralleled for higher current requirements if necessary for custom inductive loads.

  • Input Impedance: High input impedance reduces the load on the microcontroller's GPIO pins, ensuring stable operation.

  • Phase Sequence Support: Supports 4-phase, 5-wire motors in both half-step and full-step operation modes.

  • Mounting Ease: Includes a fixed mounting hole for secure installation within project chassis or 3D-printed enclosures.

  • Compact Form Factor: The narrow PCB design saves valuable space in high-density electronics assemblies.

  • Heat Dissipation: Perforated board design and high-quality traces help manage thermal loads during continuous stepping.

  • Standard Pitch: Features 2.54mm (0.1") pitch headers, making it fully compatible with standard jumper wires and breadboards.

  • Switching Speed: High-speed switching capability suitable for precision micro-stepping applications.

  • Operating Temperature: Rated for industrial temperature ranges, ensuring reliability in varying environmental conditions.

  • Modular Design: Can be easily daisy-chained or used in multi-axis configurations for CNC or robotic arm projects.

Prototyping and Engineering Tips from Robogears

  • 9V Battery Use: While the driver can handle 9V, a 28BYJ-48 motor typically pulls significant current. A standard 9V battery will only last a few minutes. For testing, use a 12V 2A SMPS or a dedicated power adapter.

  • 18650 Cell: Two 18650 cells in series (7.4V) provide a great balance of torque and runtime for this driver. Connect the battery to the (+) and (-) pins on the jumper block of the driver.

  • IC & Capacitor Tip: Always add a 100uF to 470uF Electrolytic Capacitor across the motor power input pins on the driver board. This prevents current surges from the motor from causing "noise" that could reset your Arduino. Pair it with an Arduino Nano for a very compact motion control system.

  • Related Products: We recommend pairing this with our 28BYJ-48 Stepper Motors, Arduino Uno R3, and Breadboard Jumper Wires.

Package Includes

  • 1 x ULN2003 Stepper Motor Driver Board.

Disclaimer Image is for ilastration purpose only 2-3 lines. Ensure the motor power supply voltage matches your stepper motor's rating. Do not exceed the 500mA per channel limit for extended periods to prevent overheating of the ULN2003 IC.