How To Control a 28BYJ-48 Stepper Motor with a Joystick DIY Project using Arduino NANO & 28BYJ-48 Stepper Motor by WTC Zone

 

To control a 28BYJ-48 stepper motor using a joystick and Arduino Nano, follow these steps:

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Components Required

1. Arduino Nano
2. 28BYJ-48 Stepper Motor
3. ULN2003 Stepper Motor Driver Module
4. Joystick Module
5. Jumper Wires
6. Breadboard
7. Power Source (USB or 5V external)

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Connections

1. Joystick Module:

   • VCC → 5V on Arduino Nano
   • GND → GND on Arduino Nano
   • VRx (Horizontal) → A0 on Arduino Nano
   • VRy (Vertical) → A1 on Arduino Nano (optional for additional control)

2. ULN2003 Driver:

   • IN1 → D2 on Arduino Nano
   • IN2 → D3 on Arduino Nano
   • IN3 → D4 on Arduino Nano
   • IN4 → D5 on Arduino Nano
   • GND → GND on Arduino Nano
   • VCC → External 5V power supply or Arduino 5V

3. Stepper Motor:

   • Connect the stepper motor to the ULN2003 driver module (dedicated 5-pin connector).

Circuit Diagram

Video Link: - Click Here For Video

How To Control a 28BYJ-48 Stepper Motor with a Joystick DIY Project WTC Zone  simple Circuit: -

How To Control a 28BYJ-48 Stepper Motor with a Joystick DIY Project WTC Zone Arduino Programming: -

Arduino IDE Program

Code for a 28BYJ-48 Stepper Motor with a Joystick DIY Project WTC Zone

#include <Stepper.h>
// Define the number of steps per revolution for the 28BYJ-48 motor
const int stepsPerRevolution = 2048; // 28BYJ-48 has 2048 steps/rev in full-step mode
// Initialize the stepper motor
Stepper myStepper(stepsPerRevolution, 2, 4, 3, 5); // IN1, IN3, IN2, IN4 (order matters)
// Joystick pin
const int joystickPin = A0; // Horizontal axis (VRx)
// Variables for joystick control
int joystickValue = 0;
int stepSpeed = 0;
const int deadZone = 50; // Define a dead zone around the center value
void setup() {
  // Set the motor speed (RPM)
  myStepper.setSpeed(10); // Initial speed
  Serial.begin(9600);     // Start Serial Monitor for debugging
}
void loop() {
  // Read joystick value (0-1023)
  joystickValue = analogRead(joystickPin);
  // Map joystick value to speed range (-10 to +10 RPM)
  stepSpeed = map(joystickValue, 0, 1023, -10, 10);
  // Apply the dead zone
  if (abs(stepSpeed) < deadZone / 10) {
    stepSpeed = 0; // Stop motor if within the dead zone
  }
  // Print joystick and speed for debugging
  Serial.print("Joystick Value: ");
  Serial.print(joystickValue);
  Serial.print(" | Step Speed: ");
  Serial.println(stepSpeed);
  // Rotate the stepper motor based on the speed
  if (stepSpeed > 0) {
    myStepper.setSpeed(stepSpeed);
    myStepper.step(stepsPerRevolution / 100); // Small step forward
  } else if (stepSpeed < 0) {
    myStepper.setSpeed(-stepSpeed);
    myStepper.step(-stepsPerRevolution / 100); // Small step backward
  } else {
    // Stop the motor if joystick is centered
    delay(10);
  }
}
  

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Working Explanation

1. Joystick Control:

   • The joystick's horizontal axis (VRx) is read on pin A0.
   • The analog value (0-1023) is mapped to a speed range of -10 to +10 RPM, where:
     • Negative values → Motor rotates counterclockwise.
     • Positive values → Motor rotates clockwise.
     • Zero value → Motor stops.

2. Stepper Motor Control:

   • The Stepper library controls the motor's steps based on the mapped speed.
   • Small steps are taken in each loop to allow smooth joystick control.

3. Serial Monitor:

   • Prints joystick values and motor speed for debugging.

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Tips

1. Power Supply:

   • Use an external 5V power supply for the ULN2003 driver if the motor stalls or doesn't move smoothly.

2. Speed Adjustment:

   • Modify the map() function to adjust the speed range, e.g., map(joystickValue, 0, 1023, -20, 20) for a faster response.

3. Dual-Axis Control:

   • Use the joystick's vertical axis (VRy on A1) for additional features, such as controlling another stepper motor or other functions.

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Test the setup, and let me know if it works or if you need additional modifications! 😊

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This setup and code will create a fun and responsive digital dice using your 7-segment servo display. Let me know if you encounter any issue.

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