Circuit Documentation

Summary

This project is an Arduino UNO-based dual stepper motor controller with gesture sensing and RTC display. The circuit includes the following components:

• Arduino UNO
• Two 28BYJ-48 Stepper Motors with ULN2003A Driver Boards
• APDS-9960 RGB and Gesture Sensor
• DS1307 RTC Module
• 16x2 I2C LCD Display
• Green LED with Resistor
• Two Pushbuttons

The functionality of the circuit includes controlling two stepper motors using ULN2003A driver boards, displaying RTC time on a 16x2 I2C LCD, using the APDS-9960 for gesture-based control, indicating status with a green LED, and using pushbuttons for additional control.

Component List

Arduino UNO

• Description: 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

28BYJ-48 Stepper Motor

• Description: 5V stepper motor.
• Pins: BLUE, PINK, YELLOW, ORANGE, RED

ULN2003A Breakout Board

• Description: Driver board for stepper motors.
• Pins: In 1, In 2, In 3, In 4, In 5, In 6, In 7, 0V, +5V, ON/OFF jumper switch, BLUE wire, PINK wire, YELLOW wire, ORANGE wire, RED wire

APDS-9960 RGB and Gesture Sensor

• Description: Sensor for RGB color and gesture detection.
• Pins: VL, GND, VCC, SDA, SCL, INT

DS1307 RTC (Wokwi Compatible)

• Description: Real-time clock module.
• Pins: GND, 5V, SDA, SCL, SQW

LED: Two Pin (green)

• Description: Green LED.
• Pins: cathode, anode

Resistor

• Description: 200 Ohms resistor.
• Pins: pin1, pin2

Pushbutton

• Description: Pushbutton switch.
• Pins: Pin 3 (out), Pin 4 (out), Pin 1 (in), Pin 2 (in)

16x2 I2C LCD

• Description: 16x2 character LCD with I2C interface.
• Pins: GND, VCC, SDA, SCL

Wiring Details

Arduino UNO

• 3.3V to VCC of APDS-9960 RGB and Gesture Sensor
• 5V to pin1 of Resistor, +5V of both ULN2003A Breakout Boards, VCC of 16x2 I2C LCD, 5V of DS1307 RTC
• GND to 0V of both ULN2003A Breakout Boards, cathode of LED, GND of APDS-9960 RGB and Gesture Sensor, GND of 16x2 I2C LCD, GND of DS1307 RTC, Pin 2 (in) of both Pushbuttons
• A0 to SCL of 16x2 I2C LCD
• A1 to SDA of 16x2 I2C LCD
• A2 to SCL of DS1307 RTC
• A3 to SDA of DS1307 RTC
• A4 to SDA of APDS-9960 RGB and Gesture Sensor
• A5 to SCL of APDS-9960 RGB and Gesture Sensor
• D2 to INT of APDS-9960 RGB and Gesture Sensor
• D3 to Pin 4 (out) of Pushbutton
• D4 to In 4 of ULN2003A Breakout Board (second)
• D5 to In 3 of ULN2003A Breakout Board (second)
• D6 to In 2 of ULN2003A Breakout Board (second)
• D7 to In 1 of ULN2003A Breakout Board (second)
• D8 to In 1 of ULN2003A Breakout Board (first)
• D9 to In 2 of ULN2003A Breakout Board (first)
• D10 to In 3 of ULN2003A Breakout Board (first)
• D11 to In 4 of ULN2003A Breakout Board (first)
• D12 to Pin 4 (out) of Pushbutton

28BYJ-48 Stepper Motor (first)

• BLUE to BLUE wire of ULN2003A Breakout Board (first)
• PINK to PINK wire of ULN2003A Breakout Board (first)
• YELLOW to YELLOW wire of ULN2003A Breakout Board (first)
• ORANGE to ORANGE wire of ULN2003A Breakout Board (first)
• RED to RED wire of ULN2003A Breakout Board (first)

28BYJ-48 Stepper Motor (second)

• BLUE to BLUE wire of ULN2003A Breakout Board (second)
• PINK to PINK wire of ULN2003A Breakout Board (second)
• YELLOW to YELLOW wire of ULN2003A Breakout Board (second)
• ORANGE to ORANGE wire of ULN2003A Breakout Board (second)
• RED to RED wire of ULN2003A Breakout Board (second)

APDS-9960 RGB and Gesture Sensor

• VCC to 3.3V of Arduino UNO
• GND to GND of Arduino UNO
• SDA to A4 of Arduino UNO
• SCL to A5 of Arduino UNO
• INT to D2 of Arduino UNO

DS1307 RTC (Wokwi Compatible)

• GND to GND of Arduino UNO
• 5V to 5V of Arduino UNO
• SDA to A3 of Arduino UNO
• SCL to A2 of Arduino UNO

LED: Two Pin (green)

• cathode to GND of Arduino UNO
• anode to pin2 of Resistor

Resistor

• pin1 to 5V of Arduino UNO
• pin2 to anode of LED

Pushbutton (first)

• Pin 2 (in) to GND of Arduino UNO
• Pin 4 (out) to D12 of Arduino UNO

Pushbutton (second)

• Pin 2 (in) to GND of Arduino UNO
• Pin 4 (out) to D3 of Arduino UNO

16x2 I2C LCD

• GND to GND of Arduino UNO
• VCC to 5V of Arduino UNO
• SDA to A1 of Arduino UNO
• SCL to A0 of Arduino UNO

Code Documentation

/*
 * Arduino UNO-Based Dual Stepper Motor Controller with Gesture Sensing and RTC Display
 *
 * Components:
 * - Arduino UNO
 * - Two 28BYJ-48 Stepper Motors with ULN2003A Driver Boards
 * - APDS-9960 RGB and Gesture Sensor
 * - DS1307 RTC Module
 * - 16x2 I2C LCD Display
 * - Green LED with Resistor
 * - Two Pushbuttons
 *
 * Functionality:
 * - Control two stepper motors using ULN2003A driver boards
 * - Display RTC time on 16x2 I2C LCD
 * - Use APDS-9960 for gesture-based control
 * - Indicate status with a green LED
 * - Use pushbuttons for additional control
 */

#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <Stepper.h>
#include <Adafruit_APDS9960.h>
#include <RTClib.h>

// Pin definitions
#define LED_PIN A1
#define BUTTON1_PIN 3
#define BUTTON2_PIN 12

// Stepper motor pins
#define STEPPER1_IN1 7
#define STEPPER1_IN2 6
#define STEPPER1_IN3 5