Circuit Documentation

Summary

This circuit consists of an Arduino UNO microcontroller connected to a Bipolar Stepper Motor (NEMA 17). The Arduino UNO controls the stepper motor by sending signals to its coils, allowing precise control over the motor's rotation.

Component List

Arduino UNO

• Description: A microcontroller board based on the ATmega328P.
• Pins: UNUSED, IOREF, Reset, 3.3V, 5V, GND, Vin, A0, A1, A2, A3, A4, A5, SCL, SDA, AREF, D13, D12, D11, D10, D9, D8, D7, D6, D5, D4, D3, D2, D1, D0
• Purpose in Circuit: To control the Bipolar Stepper Motor.

Bipolar Stepper Motor (NEMA 17)

• Description: A type of stepper motor with two coils, allowing for precise control of rotation.
• Pins: A-, A+, B+, B-
• Purpose in Circuit: To be driven by the Arduino UNO for precise rotational movement.

Wiring Details

Arduino UNO

• D11: Connected to A- of the Bipolar Stepper Motor
• D10: Connected to A+ of the Bipolar Stepper Motor
• D9: Connected to B+ of the Bipolar Stepper Motor
• D8: Connected to B- of the Bipolar Stepper Motor

Bipolar Stepper Motor (NEMA 17)

• A-: Connected to D11 of the Arduino UNO
• A+: Connected to D10 of the Arduino UNO
• B+: Connected to D9 of the Arduino UNO
• B-: Connected to D8 of the Arduino UNO

Code Documentation

Arduino UNO Code

#include <Stepper.h>

const int stepsPerRevolution = 200;  // Change this to match your motor's specifications

// Initialize the stepper library on pins 10, 11, 9, 8
Stepper myStepper(stepsPerRevolution, 10, 11, 9, 8);

void setup() {
  myStepper.setSpeed(60);  // Set the speed in RPM
}

void loop() {
  myStepper.step(stepsPerRevolution);  // Move one full revolution
  delay(1000);  // Wait for a second
  myStepper.step(-stepsPerRevolution);  // Move one full revolution in the other direction
  delay(1000);  // Wait for a second
}

This code initializes the stepper motor on pins 10, 11, 9, and 8 of the Arduino UNO. It sets the motor speed to 60 RPM and continuously rotates the motor one full revolution in each direction with a one-second delay between movements.