Circuit Documentation

Summary

This document provides a detailed overview of a circuit that includes an Arduino UNO, an ESP32, a DS3231 RTC module, an L298N motor driver, a stepper motor, a micro servo, an IR sensor, a buzzer, and a 16x2 LCD display. The circuit is designed to interface these components for various functionalities, including motor control, timekeeping, and display output.

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. ESP32 (30 pin)

   • Description: A low-cost, low-power system on a chip microcontroller with integrated Wi-Fi and dual-mode Bluetooth.
   • Pins: EN, VP, VN, D34, D35, D32, D33, D25, D26, D27, D14, D12, D13, GND, Vin, D23, D22, TX0, RX0, D21, D19, D18, D5, TX2, RX2, D4, D2, D15, 3V3

3. DS3231 RTC

   • Description: A low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal.
   • Pins: 32K, SQW, SCL, SDA, VCC, GND

4. L298N Motor Driver Controller Board Module Stepper Motor

   • Description: A dual H-Bridge motor driver module for controlling DC and stepper motors.
   • Pins: Output A, +12v Power, +5v Power, Ground, Output B, Input 4, Input 3, Input 2, Input 1

5. Stepper Motor (Bipolar)

   • Description: A type of stepper motor with two coils and four wires.
   • Pins: D, B, C, A

6. Micro servo 9G

   • Description: A small and lightweight servo motor.
   • Pins: GND, +5V, PWM

7. IR Sensor

   • Description: An infrared sensor used for detecting objects.
   • Pins: out, gnd, vcc

8. Buzzer

   • Description: An electronic device that produces a sound.
   • Pins: PIN, GND

9. 16X2 LCD

   • Description: A 16x2 character LCD display.
   • Pins: VSS, VDD, V0, RS, RW, E, D1, D0, D2, D3, D4, D6, D5, D7, A, K

Wiring Details

Arduino UNO

• 5V connected to:

  • 16X2 LCD (VDD, A)
  • L298N Motor Driver (+5v Power)
  • DS3231 RTC (VCC)
  • Micro servo 9G (+5V)
  • IR Sensor (vcc)

• GND connected to:

  • 16X2 LCD (VSS, K, RW)
  • L298N Motor Driver (Ground)
  • DS3231 RTC (GND)
  • ESP32 (GND)
  • Buzzer (GND)
  • Micro servo 9G (GND)
  • IR Sensor (gnd)

• A4 connected to:

  • DS3231 RTC (SDA)

• A5 connected to:

  • DS3231 RTC (SCL)

• D13 connected to:

  • 16X2 LCD (D1)

• D12 connected to:

  • 16X2 LCD (RS)

• D11 connected to:

  • 16X2 LCD (E)
  • L298N Motor Driver (Input 4)

• D10 connected to:

  • L298N Motor Driver (Input 3)

• D9 connected to:

  • L298N Motor Driver (Input 2)

• D8 connected to:

  • L298N Motor Driver (Input 1)

• D7 connected to:

  • 16X2 LCD (D2)

• D6 connected to:

  • 16X2 LCD (D3)

• D5 connected to:

  • 16X2 LCD (D4)

• D4 connected to:

  • 16X2 LCD (D5)

• D3 connected to:

  • 16X2 LCD (D6)
  • Buzzer (PIN)
  • Micro servo 9G (PWM)

• D2 connected to:

  • 16X2 LCD (D7)
  • IR Sensor (out)

• D1 connected to:

  • ESP32 (RX2)

• D0 connected to:

  • ESP32 (TX2)

ESP32

• GND connected to:

  • Arduino UNO (GND)

• RX2 connected to:

  • Arduino UNO (D1)

• TX2 connected to:

  • Arduino UNO (D0)

DS3231 RTC

• VCC connected to:

  • Arduino UNO (5V)

• GND connected to:

  • Arduino UNO (GND)

• SDA connected to:

  • Arduino UNO (A4)

• SCL connected to:

  • Arduino UNO (A5)

L298N Motor Driver Controller Board Module Stepper Motor

• +5v Power connected to:

  • Arduino UNO (5V)

• Ground connected to:

  • Arduino UNO (GND)

• Input 4 connected to:

  • Arduino UNO (D11)

• Input 3 connected to:

  • Arduino UNO (D10)

• Input 2 connected to:

  • Arduino UNO (D9)

• Input 1 connected to:

  • Arduino UNO (D8)

• Output A connected to:

  • Stepper Motor (A, C)

• Output B connected to:

  • Stepper Motor (D, B)

Stepper Motor (Bipolar)

• A connected to:

  • L298N Motor Driver (Output A)

• B connected to:

  • L298N Motor Driver (Output B)

• C connected to:

  • L298N Motor Driver (Output A)

• D connected to:

  • L298N Motor Driver (Output B)

Micro servo 9G

• +5V connected to:

  • Arduino UNO (5V)

• GND connected to:

  • Arduino UNO (GND)

• PWM connected to:

  • Arduino UNO (D3)

IR Sensor

• vcc connected to:

  • Arduino UNO (5V)

• gnd connected to:

  • Arduino UNO (GND)

• out connected to:

  • Arduino UNO (D2)

Buzzer

• PIN connected to:

  • Arduino UNO (D3)

• GND connected to:

  • Arduino UNO (GND)

16X2 LCD

• VDD connected to:

  • Arduino UNO (5V)

• A connected to:

  • Arduino UNO (5V)

• VSS connected to:

  • Arduino UNO (GND)

• K connected to:

  • Arduino UNO (GND)

• RW connected to:

  • Arduino UNO (GND)

• D1 connected to:

  • Arduino UNO (D13)

• RS connected to:

  • Arduino UNO (D12)

• E connected to:

  • Arduino UNO (D11)
  • L298N Motor Driver (Input 4)

• D2 connected to:

  • Arduino UNO (D7)

• D3 connected to:

  • Arduino UNO (D6)

• D4 connected to:

  • Arduino UNO (D5)

• D5 connected to:

  • Arduino UNO (D4)

• D6 connected to:

  • Arduino UNO (D3)
  • Buzzer (PIN)
  • Micro servo 9G (PWM)

• D7 connected to:

  • Arduino UNO (D2)
  • IR Sensor (out)

Documented Code

Arduino UNO Code

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

}

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

}

Additional Documentation

No additional documentation provided.