28BYJ-48 5V 4 Phase DC Gear Stepper Motor + ULN2003 Driver Board for arduino

28BYJ-48 Stepper Motor:

• Specifications:
  • Voltage: 5V
  • Phase: 4
  • Wires: 5 (4-phase motor with a common ground wire)
  • Gear Ratio: 1:64 (geared down by a factor of 64)
  • Steps per Revolution: 4096 (full steps)
  • Unipolar winding configuration
• Description:
  • The 28BYJ-48 is an affordable and commonly used stepper motor. While it may not be super accurate or powerful, it’s great for smaller projects or learning about stepper motors.
  • It’s often employed in applications like automatic air conditioner vane adjustment.
• Wiring:
  • Connect the motor wires to the ULN2003 driver board as follows:
    • Bipolar winding 1: Motor pins 1 & 3
    • Bipolar winding 2: Motor pins 2 & 4
• Power Supply:
  • Caution: Do not power the motor directly from the Arduino; use an external 5V power supply to avoid damaging the Arduino.
• Control:
  • You can control the 28BYJ-48 using an Arduino and the ULN2003 driver board.
  • Example codes are available for both the basic Arduino Stepper library and the more feature-rich AccelStepper library.
  • The AccelStepper library improves motor performance and provides additional features.
• Examples:
  • Continuous rotation: Rotate the motor indefinitely in one direction.
  • Specify steps or revolutions: Control the motor’s movement precisely.
  • Acceleration and deceleration: Gradually change the motor speed.
• Resources:
  • Tutorial with example codes

ULN2003 Driver Board:

• Description:
  • The ULN2003 is a popular motor driver board designed to interface with stepper motors like the 28BYJ-48.
  • It contains a ULN2003 Darlington transistor array, which simplifies motor control.
  • The board provides current amplification and protection for the Arduino.
• Wiring:
  • Connect the ULN2003 board to the Arduino using jumper wires.
  • Refer to the wiring diagram in the tutorial.
• Control:
  • The ULN2003 board allows bidirectional control of the stepper motor.
  • It’s compatible with both the Arduino Stepper library and the AccelStepper library.