Circuit Documentation

Summary

This document provides a detailed overview of a circuit designed to control brushless motors using an Arduino Mega 2560 as the main microcontroller. The circuit includes a power distribution board that distributes power from a Lipo battery to various components, including electronic speed controllers (ESCs) for motor control, sensors, and communication modules. A rocker switch is used to control the power flow. The circuit also integrates a GPS module, a compass, ultrasonic sensors for distance measurement, a radio communication module (SX1278), and an NRF24L01 module for wireless communication.

Component List

Power Distribution Board

• Distributes power from the battery to the circuit components.

Lipo Battery

• Provides the main power source for the circuit.

Rocker Switch (SPST)

• Controls the on/off state of the circuit.

Arduino Mega 2560

• Acts as the central processing unit, controlling the ESCs and communicating with sensors and modules.

Electronic Speed Controllers (ESC)

• Four ESCs are used to control the speed and direction of four brushless motors.

Brushless Motors

• Four motors that provide the mechanical power for movement.

Neo 6M GPS Module

• Provides location data to the system.

HMC5883L Compass

• A digital compass that provides heading information.

HC-SR04 Ultrasonic Sensors

• Four sensors used for distance measurement.

SX1278

• A radio communication module for long-range communication.

ESP32 - Expansion Board

• An expansion board that provides additional connectivity and interfaces for the ESP32 module.

NRF24L01

• A wireless communication module for short-range communication.

Wiring Details

Power Distribution Board

• Connected to the Lipo Battery, Rocker Switch, ESCs, and Arduino Mega 2560.

Lipo Battery

• Provides VCC and GND to the Power Distribution Board.

Rocker Switch (SPST)

• Controls the connection between the Lipo Battery and the Power Distribution Board.

Arduino Mega 2560

• GND connected to the Power Distribution Board and ESCs.
• 5V connected to the Power Distribution Board.

Electronic Speed Controllers (ESC)

• Battery VCC and GND connected to the Power Distribution Board.
• Each ESC's M1, M2, and M3 pins connected to the corresponding L1, L2, and L3 pins of a Brushless Motor.

Brushless Motors

• L1, L2, and L3 pins connected to the corresponding M1, M2, and M3 pins of an ESC.

Neo 6M GPS Module

• GND and VCC connected to the ESP32 - Expansion Board.
• TX and RX connected to the ESP32 - Expansion Board for serial communication.

HMC5883L Compass

• GND and VCC connected to the ESP32 - Expansion Board.
• DRDY, SDA, and SCL connected to the ESP32 - Expansion Board for data communication.

HC-SR04 Ultrasonic Sensors

• GND and VCC connected to the ESP32 - Expansion Board.
• TRIG and ECHO pins connected to the ESP32 - Expansion Board for triggering and echo reception.

SX1278

• GND and 3.3V connected to the ESP32 - Expansion Board.
• RST, DIO0, NSS, MOSI, MISO, and SCK connected to the ESP32 - Expansion Board for SPI communication.

ESP32 - Expansion Board

• Provides power and data connections to the Neo 6M GPS Module, HMC5883L Compass, HC-SR04 Ultrasonic Sensors, and SX1278 module.

NRF24L01

• Not detailed in the wiring list, assumed not to be connected in this circuit.

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:

}

Note: The provided code for the Arduino Mega 2560 is a template with empty setup and loop functions. This code should be populated with the logic required to control the ESCs, read sensor data, and communicate with other modules.

ESP32 - Expansion Board Code

No code provided for the ESP32 - Expansion Board.