Description
The 28BYJ-48 5V Stepper Motor is a popular and affordable unipolar stepper motor widely used in DIY electronics, robotics, and automation projects. It features a 5V DC operating voltage and offers excellent torque for its size, making it ideal for driving small mechanisms like camera gimbals, robotic arms, CNC machines, 3D printers, and automatic curtain or door openers.
This motor comes with a built-in 5-pin connector (XH-5P) that is specifically designed for seamless plug-and-play compatibility with the ULN2003 motor driver board. The 28BYJ-48 incorporates a 1/64 gear reduction ratio, which significantly increases its torque while reducing its speed, enabling precise positioning and smooth rotation. With a step angle of 5.625° (64 steps per revolution internally) and a geared output shaft, it delivers a resolution of approximately 4076 steps per full output revolution when driven in full-step mode.
The motor is controlled via four-phase sequential signals, making it easy to interface with microcontrollers like Arduino, ESP32, Raspberry Pi, and STM32. Its lightweight design, low power consumption, and reliable performance make it the go-to choice for hobbyists and engineers working on budget-friendly motion control projects.
Product Specifications
| Specification | Detail |
|---|---|
| Model | 28BYJ-48 |
| Voltage | 5V DC |
| Motor Type | Unipolar Stepper Motor |
| Phase | 4-Phase |
| Step Angle | 5.625° / 64 |
| Reduction Ratio | 1:64 |
| Steps per Revolution (Internal) | 64 |
| Steps per Revolution (Output Shaft) | Approx. 4096 (64 x 64) |
| Rated Current | 200mA – 300mA (typical) |
| Coil Resistance | Approx. 50Ω per phase (at 25°C) |
| Torque | > 34.3 mN.m (at rated voltage) |
| Connector | XH-5P Female Connector (5-pin) |
| Compatible Driver | ULN2003 Driver Board |
| Dimensions | Approx. 28mm (Diameter) x 19mm (Length) (without shaft) |
| Shaft Diameter | Approx. 5mm |
| Shaft Length | Approx. 8mm – 10mm |
| Weight | Approx. 42 grams |
