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  4. 28BYJ-48 5V Stepper Motor 4-Phase 5-Wire Geared Motor for Arduino and Robotics
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28BYJ-48 5V Stepper Motor 4-Phase 5-Wire Geared Motor for Arduino and Robotics

28BYJ-48 5V Stepper Motor 4-Phase 5-Wire Geared Motor for Arduino and Robotics

ComponentSpecification
Model28BYJ-48
Operating Voltage5V DC
Phase / Wire4-Phase / 5-Wire
Gear Reduction1:64
Step Angle5.625° / 64
Stride Angle0.088° (Approx.)
Shaft Type5mm Flattened (D-Shaft)
                                 Price

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₹ 101.69 ₹ 101.69
(Tax included)

Barcode: 54781063

Product Description The 28BYJ-48 5V is a compact, gear-reduced stepper motor designed for precision motion control at low power. With its internal 1:64 gear ratio, this motor provides excellent holding torque and incremental accuracy, making it ideal for micro-positioning tasks. Since it operates on 5V, it can be powered directly from most microcontroller development boards (via a driver), making it a favorite for DIY projects like automatic feeders, mini CNCs, and rotating sensor mounts.

Key Features

  • Internal gear reduction for superior torque and positioning stability.

  • Unipolar 5-wire interface compatible with ULN2003 driver modules.

  • Extremely high resolution (4096 steps per revolution in half-step mode).

  • Low noise and low vibration operation due to precision internal gearing.

  • Standardized D-shaft for secure attachment of gears and pulleys.

Technical Details

  • Pull-in Torque: > 300 gf.cm

  • Self-positioning Torque: > 600 gf.cm

  • Friction Torque: 600–1200 gf.cm

  • Insulation Resistance: > 50MΩ

  • Frequency: 100Hz

  • Noise Level: < 35dB

  • Diameter: 28mm

Prototyping and Engineering Tips from Robogears

  • Power Source: While the motor runs on 5V, it is best to power it from an external 5V 1A power supply rather than the Arduino's 5V pin to avoid voltage drops during high-frequency stepping.

  • Driver Pairing: Always use a ULN2003 driver board. This motor is unipolar, and the driver makes it easy to sequence the 4 phases using just 4 digital pins.

  • Speed vs. Torque: This motor is built for precision. Attempting to drive it faster than 15 RPM will likely result in stalled steps. For smooth movement, use the AccelStepper library to implement acceleration ramps.

  • Half-Stepping: For the smoothest rotation and highest resolution, use 8-step (half-step) sequences. This doubles your resolution and significantly reduces mechanical resonance.

Package Includes

  • 1 x 28BYJ-48 5V Stepper Motor

Disclaimer Images are for reference; actual appearance may vary by batch. Specifications subject to change by manufacturer. Use with a current-limiting driver to prevent overheating.

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