The 28BYJ-48 5V stepper motor is a widely-used motor for various small-scale projects due to its affordability and ease of use. Here’s an in-depth look at its features and applications: Technical Specifications Rated Voltage: 5V DC Step Angle: 5.625° per step (64 steps per full rotation) Reduction Ratio: 64:1 (which means the output shaft rotates once for every 64 steps of the internal rotor) Torque: Approximately 34.3 mN.m (300 gf.cm) Speed: Around 15 RPM at 120Hz Coil Configuration: Unipolar 5-lead coil Insulation Resistance: > 600Hz DC Resistance: 50Ω ±7% (at 25°C) Pull-in Torque: 600-1200 gf.cm Self-positioning Torque: 300 gf.cm Friction Torque: 34.3 mN.m (at 120Hz) Insulation Grade: A Rise in Temperature: < 40K (at 120Hz) Noise Level: < 35dB (at 120Hz, no load, 10cm) Pin Configuration: Orange: Coil 1 Pink: Coil 2 Yellow: Coil 3 Blue: Coil 4 Red: 5V Power Supply Applications The 28BYJ-48 stepper motor is perfect for: Robotics: Small robots and automated systems. Home Appliances: Vending machines, DVD drives, and air conditioning units. Security Systems: CCTV cameras and motion control systems. Educational Kits: Great for learning about stepper motors and control systems in schools and hobbyist projects. Control Mechanism: To control this motor, a driver circuit like the ULN2003 is typically used. The motor operates in a unipolar configuration, meaning each coil is energized by applying 5V to one end and grounding the other end in a specific sequence. This sequence is controlled by the driver, which is usually connected to a microcontroller such as an Arduino. How It Works The motor consists of a rotor and a series of coils. When a coil is energized, it creates a magnetic field that interacts with the rotor, causing it to move. By energizing the coils in a specific sequence, the rotor can be made to rotate in precise increments. Category: Motors And Motor Drivers
