Product description: Geared stepper motor 28BYJ-48 5 V / 0.1 A / 0.03 Nm with ULN2003A driver - OpenPlatform
A five-wire stepper motor with a dedicated ULN2003A-based driver. It features an integrated 64:1 gear ratio. It operates at 5V and draws 100mA per coil. The gear holding torque is 0.3kg*cm (0.03Nm). The output shaft has a 5mm diameter shaft. The 28BYJ-48 is controlled by the ULN2003A controller.
Application of stepper motors:
- printers
- CNC devices
- 3D printers
- laser devices
- manipulators
Geared stepper motor 28BYJ-48 5 V / 0.1 A / 0.03 Nm with ULN2003A driver - OpenPlatform.
Dedicated controller based on the ULN2003A system.
Engine Specifications - Step-motor 28BYJ-48
- Nominal voltage: 5 V
- Current consumption per coil: 100 mA
- Gear ratio: 64:1
- Coil resistance: 50 Ω
- Holding torque at the gearbox output: 0.3 kg*cm (0.03 Nm).
- Pins: five wires)
- Shaft diameter: 5 mm with chamfers
- Weight: 35 g
- Distance between mounting holes: 35 mm
- Dimensions: ϕ28 x 19 mm (without shaft)
For details, please refer to the engine documentation .
Driver Specifications
- Operating voltage: 5 V
- Chip used: ULN2003A (documentation)
- Connector compatible with the included motor
- LEDs indicating the current phase
- Seven input pins - IN1...IN7
- Plate dimensions: 23 x 17 mm
For details, please refer to the driver documentation .
28BYJ-48 - Arduino and the use of this minicomputer is fully possible with this stepper motor model.
Stepper motor with gearbox.
Stepper motor - discrete rotary motion
Among the numerous electric motor designs used to power machines and devices, one of the most popular technical solutions is the stepper motor. It is essentially a brushless DC motor, with the difference that its rotor rotates intermittently rather than continuously, controlled by a PWM signal. Stepper motors are used in robots, numerically controlled machine tools, printers, and the automotive industry, among other applications.
How does a stepper motor work?
A stepper motor, unlike BLDC motors and conventional DC commutator motors, is powered by a pulsed voltage (PWM). A single pulse (high state) corresponds to a single motor rotation. To increase the motor's step resolution, a special gear unit is used, as in the 28BYJ-48 motor. In this case, a full rotation of the motor shaft causes the output shaft to rotate by 1/64 of a revolution.
