Stepper motor is used for precision level controlling. The 28BYJ motor is a very common stepper motor and this can be used in various types of applications where precision control is required. 

The specification consists of 5V operating voltage and has a step angle of 5.625 degrees. Thus, 64 steps make 360 degrees of complete rotation of the motor. The friction torque and pull in torque of the motor is 1200 gf.cm and 300 gf.cm respectively.

As this is a four-phase motor, it has five output wires and can be driven with a ULN2003 driver board. A complete set of this stepper motor with an ULN2003 board is also available in quartz components. It operates on 5V and has a step angle of 5.625 degrees, meaning it has to make 64 steps to complete one rotation.

The connector has 2.54” spacing.

28BYJ-48 Quick Pinout:

28BYJ-48 Quick Specification:

Specification :

• Diameter of the motor: 28mm
• Operational Voltage: DC 5V
• DC resistance of the winding： 50Ω±7% (25℃)
• Diameter: 25mm
• Step Angle: 5.625 x 1/64
• Reduction Ratio: 1/64
• Rated voltage of the motor： 5VDC
• Number of Phases ： 4
• Speed Variation Ratio ： 1/64
• Stride Angle ：625° /64
• Frequency: 100Hz
• Idle In-traction Frequency: > 600Hz
• Idle Out-traction Frequency: > 1000Hz
• In-traction Torque >34. 3mN.m(120Hz)
• Self-positioning Torque >34. 3mN.m
• Friction torque: 600-1200 gf.cm
• Pull in torque: 300 gf.cm
• Insulated resistance >10MΩ(500V)
• Insulated electricity power ：600VAC/1mA/1s
• Insulation grade ：A
• Rise in Temperature <40K (120Hz
• Noise <35dB (120Hz, No load,10cm)
• Model ： 28BYJ-48

28BYJ-48 Applications:

• Robotic
• High Load control
• Steps control in mini automotive grade projects
• Any Stepper Motor related applications

28BYJ-48 Dimension and footprint:

Example Projects on 28BYJ-48:

Interfacing 28BYJ-48 with ARM7-LPC2148

Additional Resources:

28BYJ-48 Datasheet