The 28BYJ-48 is a 5V unipolar stepper motor that comes with an internal gear reduction system. While it moves slower than a standard motor, the 1:64 gear ratio gives it enough power to lift small weights or turn heavy mechanisms with ease. It is a 4-phase motor, making it extremely easy to control using the standard Arduino Stepper.h library or the popular ULN2003 driver board.
Geared Precision: 1:64 reduction ratio provides high holding torque and precise positioning.
5V Operation: Designed to run directly from your Arduino or Raspberry Pis 5V power rail (using a driver).
4-Phase / 5-Wire: Simple wiring and wide library support for beginners.
Quiet & Stable: Smooth operation with minimal vibration compared to larger NEMA motors.
Standard Connection: Features a 5-pin XH-2.54 connector for plug-and-play use with ULN2003 driver boards.
| Feature | Specification |
| Model | 28BYJ-48 (5V Variant) |
| Rated Voltage | 5V DC |
| Number of Phases | 4 Phases (5 Wires) |
| Gear Reduction Ratio | 1 / 64 |
| Stride Angle | 5.625 / 64 |
| DC Resistance | 50 7% (at 25C) |
| Pull-in Torque | > 300 gf.cm (at 100Hz) |
| Noise Level | < 35dB |
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