About this item

The 28BYJ-48 Stepper Motor (5V DC) is a compact, low-cost geared stepper motor widely used for precise positioning in DIY electronics and robotics. Operating at 5 V DC, it features a unipolar 5-wire configuration, with one common positive (red) and four individual coil wires—orange, pink, yellow, and blue—for easy interfacing with microcontrollers. Equipped with an internal 64:1 gear reduction, it offers fine control—each of the 64 internal steps equates to 5.625°, yielding approximately 2048 micro-steps per revolution when combined with gearbox. Though small, the geared design delivers a self-positioning torque exceeding 34.3 mN·m (≈300 gf·cm), with pull-in torque in the same range, making it capable of reliably moving light mechanical loads at ~15 RPM. Ideal for applications like robotic arms, camera mechanisms, CNC machines, and home automation, this motor is most effective when paired with a ULN2003 driver board, which provides necessary current amplification and step sequencing. On the downside, it draws significant current (~240 mA) even when idle to hold position, and torque is limited compared to larger motors like NEMA types. Overall, the 28BYJ-48 offers exceptional value for compact, low-speed, and precise movement tasks in educational and hobbyist applications.

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