5 VDC STEPPER MOTOR WITH ULN2003 DRIVER BOARD (ARD84E)

 A small and versatile motor and driver set. This 5 VDC stepper motor controlled by the ULN2003 driver can be used with any Arduino® or compatible boards via jumper leads. Four-phase LED indicates the status of the stepper motor.

 Electrical Specifications

• Rated voltage: 5 V DC

• Phase count: 4-phase Unipolar (5-wire)

• Rated current: typically ~200–240 mA per phase at 5 V (varies by manufacturer)

• DC winding resistance: ~50 Ω ±7% per coil (some sources list ~200 Ω total)

• Insulation resistance: >10 MΩ @ 500 V

• Dielectric strength: 600 VAC / 1 mA / 1 s

• Insulation class: A

 Motion & Torque

• Gear reduction ratio: ~1:64 (geared)

• Step angle: 5.625° per internal step → ~2038 steps per shaft revolution after gearbox (≈0.18°/step)

• Frequency: ~100 Hz

• Holding / in-traction torque: ≥ ~34.3 mN·m (≈350 gf·cm) at ~120 Hz

• Detent/self-positioning torque: ≥ ~34.3 mN·m

• Friction torque: ~600–1200 gf·cm

• Pull-in torque: ~300 gf·cm

 Mechanical / Physical

• Typical dimensions: ~28 mm diameter

• Output shaft diameter: ~5 mm flat

• Weight: ~30–50 g depending on supplier

• Lead wire connector: 5-wire unipolar with connector

 Performance

• Idle pull-in freq.: >600 Hz

• Idle pull-out freq.: >1000 Hz

• Temperature rise:

• Noise: <35–40 dB (no load @ 10 cm)