28BYJ-48 12V Stepper Motor ULN2003 Controller Board BX3 ,R12

DescriptionWhen your project requires accuracy over speed—such as adjusting a camera gimbal, rotating a smart-home security camera, or slowly opening an automated vent—a standard DC motor will not work. You need a motor that moves in exact increments. The 12V 28BYJ-48 Stepper Motor is the undisputed champion of beginner-friendly, precise rotational control.The 12V Torque AdvantageWhile the 5V version of the 28BYJ-48 is very popular, it often lacks the physical strength to pull heavier loads. By upgrading to this 12V version, you gain significantly more torque and holding power. This means your automated window blinds will not stall halfway up, and your robotic arms can lift heavier payloads without skipping steps.Internal Gear ReductionThis motor does not drive the output shaft directly. It features an internal gear train with a reduction ratio of approximately 1:64. This gearing drastically slows down the physical output speed but multiplies the torque and precision immensely. It takes exactly 2048 steps for the microcontroller to rotate the outer shaft one full 360-degree revolution, granting you fractions of a degree in positioning accuracy.Included ULN2003 Driver BoardMicrocontrollers operate on tiny logic-level voltages (3.3V or 5V) and can only output a few milliamps of current. If you try to power a 12V stepper motor directly from an Arduino pin, you will instantly fry your board. That is why this motor includes a dedicated ULN2003 Driver Board. This board takes the weak control signals from your microcontroller and acts as a heavy-duty electrical switch, safely bridging the 12V power supply to the motor’s internal coils. It even features four onboard LEDs that visually display the stepping sequence, making troubleshooting your code incredibly easy.Key Features:High Precision: 2048 steps per revolution allows for incredibly fine mechanical adjustments.Plug and Play: The motor features a keyed JST connector that plugs perfectly into the driver board without any soldering.Status LEDs: Built-in driver LEDs light up sequentially to confirm your microcontroller is successfully sending step pulses.Technical Specifications:Operating Voltage: 12V DCMotor Type: Unipolar Stepper (5-Wire)Step Angle: 5.625 x 1/64Gear Reduction Ratio: ~1:64 (Approximate)Steps Per Revolution: 2048Driver IC: ULN2003 Darlington Transistor ArrayShaft Type: Double-flat “D” shaftIdeal Applications:DIY smart home automation (motorized window blinds, pet feeders)Prototyping low-cost CNC machines and 3D scanner turntablesBuilding custom pan-and-tilt mounts for camerasEducational workshops teaching step sequences and motor control logicGetting started with 12V Stepper Motor  and Arduino UNOStep1: Hardware requiredArduino UNO12v stepper motor and DriveMale to female jumper wireStep2: Connecting the Hardware             Arduino UNO                       Stepper motorPin 8                                             IN 1Pin 9                                              IN2Pin 10                                            IN3Pin11                                              IN4GND                                               GND5V                                                    VCC If you need powerfully Output connected vcc to 12VStep3: Making the sketch and TestingSerial monitorLibrary and Code go to :1.Sketch2.Include Library3.Manage Libraries –>>>> 28BYJ-48