Description
This motor is best for low-speed, lightweight positioning applications. If your project needs high speed or high torque, a larger stepper motor may be more suitable.
Wire configuration:
- Blue: Phase 1
- Pink: Phase 2
- Yellow: Phase 3
- Orange: Phase 4
- Red: Common positive (+5 V)
The common red wire connects to the motor supply through the appropriate driver-board arrangement.
Recommended driver
- ULN2003 driver module
- Designed for driving small unipolar stepper motors.
- Provides four control inputs and four motor-phase outputs.
- Commonly supplied with the 28BYJ-48.
- Use a suitable 5 V supply for the motor; do not connect the motor windings directly to microcontroller GPIO pins.
Typical applications
- Small robotic mechanisms
- Camera positioning
- Automatic blinds and vents
- Rotating displays
- Lightweight valve or dial positioning
Technical specifications
- Model: 28BYJ-48
- Operating voltage: 5 V DC
- Motor type: Unipolar stepper
- Number of phases: 4
- Wire configuration: 5-wire
- Step angle (internal motor): 11.25° in full-step mode; 5.625° in half-step mode
- Internal motor steps per revolution: 32 full steps or 64 half steps
- Gear reduction ratio: Approximately 1:64
- Output shaft steps per revolution: Approximately 2,048 full steps or 4,096 half steps (nominal)
- Coil resistance: Commonly 50 Ω ±7% at 25°C, depending on variant
- Typical current: Approximately 100 mA per energized phase for the 50 Ω version
- Typical driver: ULN2003 driver board
Applications:
Small robotics, positioning, instrument panels, lightweight automation
Important: The actual gearbox ratio varies slightly between manufacturers, so the number of steps required for one exact output-shaft revolution may differ from the nominal figures.
Package Content:
1x 28BYJ-48 stepper motor 5v
Note: Product Images are shown for illustrative purposes only and may differ from the actual products.