Circuit Documentation

Summary

This circuit involves an Arduino UNO microcontroller controlling a 28BYJ-48 stepper motor through a ULN 2003 driver. The Arduino UNO sends control signals to the ULN 2003, which in turn drives the stepper motor.

Component List

1. 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

2. 28BYJ-48 Stepper Motor

   • Description: A small, inexpensive stepper motor commonly used in hobby electronics.
   • Pins: BLUE, PINK, YELLOW, ORANGE, RED

3. ULN 2003

   • Description: A Darlington transistor array used to drive the stepper motor.
   • Pins: IN1, IN2, IN3, IN4, IN5, IN6, IN7, GND, +, COIL1, COIL2, COIL3, COIL4, COIL5

4. Comment

   • Description: Placeholder for comments in the circuit design.
   • Pins: None

Wiring Details

Arduino UNO

• D11 connected to IN2 of ULN 2003
• D10 connected to IN4 of ULN 2003
• D9 connected to IN1 of ULN 2003
• D8 connected to IN3 of ULN 2003

28BYJ-48 Stepper Motor

• BLUE connected to COIL1 of ULN 2003
• PINK connected to COIL2 of ULN 2003
• YELLOW connected to COIL3 of ULN 2003
• ORANGE connected to COIL4 of ULN 2003
• RED connected to COIL5 of ULN 2003

ULN 2003

• IN2 connected to D11 of Arduino UNO
• IN4 connected to D10 of Arduino UNO
• IN1 connected to D9 of Arduino UNO
• IN3 connected to D8 of Arduino UNO
• COIL1 connected to BLUE of 28BYJ-48 Stepper Motor
• COIL2 connected to PINK of 28BYJ-48 Stepper Motor
• COIL3 connected to YELLOW of 28BYJ-48 Stepper Motor
• COIL4 connected to ORANGE of 28BYJ-48 Stepper Motor
• COIL5 connected to RED of 28BYJ-48 Stepper Motor

Code Documentation

Arduino UNO Code

void setup() {
  // put your setup code here, to run once:

}

void loop() {
  // put your main code here, to run repeatedly:

}

This code is a basic template for the Arduino UNO. The setup() function is where you initialize your settings, and the loop() function is where the main code runs repeatedly. You can add your motor control logic in these functions to control the 28BYJ-48 stepper motor through the ULN 2003 driver.