Circuit Documentation

Summary

This document provides a detailed overview of a circuit that integrates various components including an ESP32-CAM, an Arduino Mega 2560, an LCD Display, an ultrasonic sensor, a toggle switch, a DIP switch, LEDs, resistors, and a 9V battery. The circuit is designed to perform multiple functions, including sensor data acquisition, display output, and user interaction through switches.

Component List

Adafruit ADXL345

• Description: 3-axis accelerometer
• Pins: VIN, 3.3V, GND, CS, INT1, INT2, SDO/ADDR, SDA/SDIO, SCL

ESP32 - CAM

• Description: Wi-Fi and Bluetooth-enabled microcontroller with a camera
• Pins: 5V, GND, IO12, IO13, IO15, IO14, IO2, IO4, VOT, VOR, VCC, IO0, IO16, 3V3

LCD Display 16x4 I2C

• Description: 16x4 character LCD display with I2C interface
• Pins: SCL, SDA, VCC, GND

HC-SR04 Ultrasonic Sensor

• Description: Ultrasonic distance sensor
• Pins: VCC, TRIG, ECHO, GND

Toggle Switch

• Description: Single-pole double-throw (SPDT) toggle switch
• Pins: L1, COM, L2

9V Battery

• Description: Power source
• Pins: -, +

DIP Switch 4 Position

• Description: 4-position DIP switch
• Pins: 1, 2, 3, 4, 5, 6, 7, 8

Arduino Mega 2560

• Description: Microcontroller board based on the ATmega2560
• Pins: IOREF, RESET, 3V3, 5V, GND, VIN, A0-A15, D0-D53, AREF, SDA, SCL

LED: Two Pin (red)

• Description: Red LED
• Pins: cathode, anode

LED: Two Pin (green)

• Description: Green LED
• Pins: cathode, anode

Resistor (1000 Ohms)

• Description: Resistor with 1000 Ohms resistance
• Pins: pin1, pin2

Resistor (100 Ohms)

• Description: Resistor with 100 Ohms resistance
• Pins: pin1, pin2

Resistor (200 Ohms)

• Description: Resistor with 200 Ohms resistance
• Pins: pin1, pin2

Wiring Details

Adafruit ADXL345

• VIN: Connected to 5V (ESP32 - CAM, LCD Display, HC-SR04, Arduino Mega 2560, DIP Switch)
• GND: Connected to GND (ESP32 - CAM, Resistor, LCD Display, Toggle Switch, HC-SR04, Red LED, Green LED, Arduino Mega 2560, DIP Switch)
• SDA/SDIO: Connected to SDA (LCD Display, Arduino Mega 2560)
• SCL: Connected to SCL (LCD Display, Arduino Mega 2560)

ESP32 - CAM

• 5V: Connected to 5V (LCD Display, HC-SR04, Arduino Mega 2560, DIP Switch, Adafruit ADXL345)
• GND: Connected to GND (Resistor, LCD Display, Toggle Switch, HC-SR04, Red LED, Green LED, Arduino Mega 2560, DIP Switch)
• IO15: Connected to pin1 (Resistor)
• IO12, IO13, IO14, IO2, IO4, VOT, VOR, VCC, IO0, IO16, 3V3: Not connected

LCD Display 16x4 I2C

• VCC: Connected to 5V (ESP32 - CAM, HC-SR04, Arduino Mega 2560, DIP Switch, Adafruit ADXL345)
• GND: Connected to GND (ESP32 - CAM, Resistor, Toggle Switch, HC-SR04, Red LED, Green LED, Arduino Mega 2560, DIP Switch, Adafruit ADXL345)
• SDA: Connected to SDA (Arduino Mega 2560, Adafruit ADXL345)
• SCL: Connected to SCL (Arduino Mega 2560, Adafruit ADXL345)

HC-SR04 Ultrasonic Sensor

• VCC: Connected to 5V (ESP32 - CAM, LCD Display, Arduino Mega 2560, DIP Switch, Adafruit ADXL345)
• GND: Connected to GND (ESP32 - CAM, Resistor, LCD Display, Toggle Switch, Red LED, Green LED, Arduino Mega 2560, DIP Switch, Adafruit ADXL345)
• TRIG: Connected to D9 PWM (Arduino Mega 2560)
• ECHO: Connected to D10 PWM (Arduino Mega 2560)

Toggle Switch

• COM: Connected to GND (ESP32 - CAM, Resistor, LCD Display, HC-SR04, Red LED, Green LED, Arduino Mega 2560, DIP Switch, Adafruit ADXL345)
• L1: Connected to D8 PWM (Arduino Mega 2560)
• L2: Connected to D7 PWM (Arduino Mega 2560)

9V Battery

• -: Not connected
• +: Not connected

DIP Switch 4 Position

• 1: Connected to GND (ESP32 - CAM, Resistor, LCD Display, Toggle Switch, HC-SR04, Red LED, Green LED, Arduino Mega 2560, Adafruit ADXL345)
• 2: Connected to D18/TX1 (Arduino Mega 2560)
• 3: Connected to D19/RX1 (Arduino Mega 2560)
• 4: Connected to 5V (ESP32 - CAM, LCD Display, HC-SR04, Arduino Mega 2560, Adafruit ADXL345)

Arduino Mega 2560

• 5V: Connected to 5V (ESP32 - CAM, LCD Display, HC-SR04, DIP Switch, Adafruit ADXL345)
• GND: Connected to GND (ESP32 - CAM, Resistor, LCD Display, Toggle Switch, HC-SR04, Red LED, Green LED, DIP Switch, Adafruit ADXL345)
• D9 PWM: Connected to TRIG (HC-SR04)
• D10 PWM: Connected to ECHO (HC-SR04)
• D8 PWM: Connected to L1 (Toggle Switch)
• D7 PWM: Connected to L2 (Toggle Switch)
• D18/TX1: Connected to 2 (DIP Switch)
• D19/RX1: Connected to 3 (DIP Switch)
• D6 PWM: Connected to pin2 (Resistor)
• D12 PWM: Connected to pin1 (Resistor)
• D13 PWM: Connected to pin1 (Resistor)
• SDA: Connected to SDA (LCD Display, Adafruit ADXL345)
• SCL: Connected to SCL (LCD Display, Adafruit ADXL345)

LED: Two Pin (red)

• cathode: Connected to GND (ESP32 - CAM, Resistor, LCD Display, Toggle Switch, HC-SR04, Green LED, Arduino Mega 2560, DIP Switch, Adafruit ADXL345)
• anode: Not connected

LED: Two Pin (green)

• cathode: Connected to GND (ESP32 - CAM, Resistor, LCD Display, Toggle Switch, HC-SR04, Red LED, Arduino Mega 2560, DIP Switch, Adafruit ADXL345)
• anode: Not connected

Resistor (1000 Ohms)

• pin1: Connected to D13 PWM (Arduino Mega 2560)
• pin2: Not connected

Resistor (100 Ohms)

• pin1: Connected to IO15 (ESP32 - CAM)
• pin2: Connected to D6 PWM (Arduino Mega 2560)

Resistor (200 Ohms)

• pin1: Connected to GND (ESP32 - CAM, LCD Display, Toggle Switch, HC-SR04, Red LED, Green LED, Arduino Mega 2560, DIP Switch, Adafruit ADXL345)
• pin2: Not connected

Documented Code

Arduino Mega 2560 Code (sketch.ino)

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

}

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

}

Additional Documentation (documentation.txt)