Circuit Documentation

Summary

This circuit involves an Arduino Mega 2560 microcontroller, an ESP32-CAM module, multiple servo motors, a LiPo battery, a Raspberry Pi 4B, an ultrasonic sensor, and a KY-026 flame sensor. The Arduino Mega 2560 serves as the main controller, interfacing with the servos, sensors, and the ESP32-CAM. The LiPo battery powers the servos, while the Arduino and sensors are powered through their respective power pins.

Component List

Arduino Mega 2560

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

ESP32-CAM

• Description: A small camera module with an ESP32-S chip.
• Pins: 5V, GND, IO12, IO13, IO15, IO14, IO2, IO4, VOT, VOR, VCC, IO0, IO16, 3V3

Servo Motors

• Description: Standard servo motors.
• Pins: GND, VCC, PWM

LiPo Battery 2200mAH 30C

• Description: A rechargeable lithium polymer battery.
• Pins: VCC, GND

Raspberry Pi 4B

• Description: A small single-board computer.
• Pins: 3V3, 5V, GPIO2-GPIO27, ID_SD, ID_SC, TR01_TAP, TR00_TAP, TR03_TAP, TR02_TAP, RUN, GLOBAL_EN, ETH, HDMI 0, HDMI 1, CAMERA, AV

Ultrasonic Sensor

• Description: A sensor used to measure distance.
• Pins: +VCC, Trigger, Echo, GND

KY-026 Flame Sensor

• Description: A sensor used to detect flame.
• Pins: A0, GND, VCC, D0

Wiring Details

Arduino Mega 2560

• 3V3: Connected to KY-026 Flame Sensor VCC
• 5V: Connected to Ultrasonic Sensor +VCC, Trigger, Echo
• GND: Connected to ESP32-CAM GND, KY-026 Flame Sensor GND, Ultrasonic Sensor GND
• D2 PWM: Connected to Servo PWM
• D3 PWM: Connected to Servo PWM
• D4 PWM: Connected to Servo PWM
• D5 PWM: Connected to Servo PWM
• D6 PWM: Connected to Servo PWM
• D7 PWM: Connected to Servo PWM
• D8 PWM: Connected to Servo PWM
• D9 PWM: Connected to Servo PWM
• D10 PWM: Connected to Servo PWM
• D11 PWM: Connected to Servo PWM
• D12 PWM: Connected to Servo PWM
• D13 PWM: Connected to Servo PWM
• D14/TX3: Connected to Servo PWM
• D15/RX3: Connected to Servo PWM
• D16 PWM/TX2: Connected to Servo PWM
• D17 PWM/RX2: Connected to Servo PWM
• D18/TX1: Connected to ESP32-CAM IO2
• D19/RX1: Connected to ESP32-CAM IO14
• D20/SDA: Connected to Servo PWM
• D21/SCL: Connected to Servo PWM
• D26: Connected to KY-026 Flame Sensor D0

ESP32-CAM

• GND: Connected to Arduino Mega 2560 GND
• IO2: Connected to Arduino Mega 2560 D18/TX1
• IO14: Connected to Arduino Mega 2560 D19/RX1

Servo Motors

• GND: Connected to LiPo Battery GND
• VCC: Connected to LiPo Battery VCC
• PWM: Connected to various PWM pins on Arduino Mega 2560

LiPo Battery 2200mAH 30C

• GND: Connected to Servo GND
• VCC: Connected to Servo VCC

Ultrasonic Sensor

• +VCC: Connected to Arduino Mega 2560 5V
• Trigger: Connected to Arduino Mega 2560 5V
• Echo: Connected to Arduino Mega 2560 5V
• GND: Connected to Arduino Mega 2560 GND

KY-026 Flame Sensor

• VCC: Connected to Arduino Mega 2560 3V3
• GND: Connected to Arduino Mega 2560 GND
• D0: Connected to Arduino Mega 2560 D26

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)

This documentation provides a comprehensive overview of the circuit, including a summary, detailed component list, wiring details, and the code used in the microcontroller.