This is a 5v 28BYJ-48 Stepper Motor with Gear Reduction, so it has good torque for its size, but relatively slow motion. These motors/drivers are made by the millions for A/C units, fans, duct controls etc. which is why they are so inexpensive. Specifications 4 Phase 5 Wire Connection Phase: 4 Current: 160 mA per winding (320 mA in 4-step mode) Measured: 250mA stopped, 200 mA running fast Resistance: 31 Ω per coil winding (from Red wire to any coil) (Some 24-28 ohms) Voltage: 5V DC Step Angle (8-Step sequence: Internal Motor alone): 5.625° (64 steps per revolution) Step Angle (4-Step sequence: Internal Motor alone): 11.25° (32 steps per revolution) Gear Reduction ratio: 1 / 64 (Not really exact: probably 63.68395.:1 ) SO: it takes (64*64 = 4096 steps per output shaft revolution.. In 8-step sequence SO: it takes (32*64 = 2048 steps per output shaft revolution.. In 4-step sequence No-Load Pull-Out Frequency : 800pps No-Load Pull-In Frequency : 500pps Pull-In Torque : ≥ 78.4mN.m Wiring Instruction : A (Blue), B (Pink), C (Yellow), D (Orange), E (Red, Mid-Point) Weight : 30g NOTE: Arduino "Stepper Library" runs in 4-step mode Documents: Datasheet
