28BYJ-48 Stepper Motor with driver

28BYJ-48 Stepper Motor

28BYJ-48 Stepper Motor:

The 28BYJ-48 stepper motor is a small and compact motor, often about 28mm in width and 48mm in height. It is characterized by its cylindrical shape and a shaft extending from one end.

This motor typically has a step angle of 5.625 degrees, which means it moves in increments of 5.625 degrees per step.

The 28BYJ-48 often comes with a built-in gearbox that reduces the step angle and increases the precision of movement. It typically has a gear ratio of 64:1 or 1/64.

These motors are designed to work with a voltage range of 5V, making them suitable for various low-voltage applications.

The 28BYJ-48 is a unipolar stepper motor, and it is controlled using a driver circuit that provides the necessary control signals to move the motor in discrete steps.

It has five wires for connection: one common wire (usually connected to the power supply’s positive terminal) and four coil wires (usually labeled A, B, C, and D). The driver circuit energizes these coils in a specific sequence to control the motor’s movement.

While these motors are not known for high speed or torque, they are suitable for applications requiring precise positioning rather than raw power.

28BYJ-48 Stepper Motor Driver:

To operate a 28BYJ-48 stepper motor effectively, a driver circuit is typically used. The driver interprets control signals from a microcontroller or other source and sends the appropriate current to the motor coils, causing it to step.

Some driver modules can support microstepping, which allows for finer control and smoother motion by dividing each step into smaller increments. This can improve the precision of the motor.

The driver usually accepts control signals, such as step and direction inputs, and sometimes additional features like adjustable current limits or speed control.

The driver circuit often requires a separate power supply to provide the necessary current for the motor. This power supply voltage is typically matched to the motor’s rated voltage.

Some driver modules include features like heat sinks or current limiting to protect the motor and the driver from overheating.

The 28BYJ-48 stepper motor and driver combination is commonly used in applications like 3D printers, camera sliders, CNC machines, and various robotics projects that require precise control of rotational motion. It’s known for its low cost, ease of use, and suitability for hobbyist and educational projects.

DATASHEET