Project Documentation

ESP32 Programming Guide

The ESP32 is a powerful microcontroller that combines WiFi and Bluetooth capabilities with dual high-performance cores, making it perfect for IoT projects.

Getting Started with ESP32

First, ensure you have the Arduino IDE installed and ESP32 board support added. Here's the basic setup process:

// Add ESP32 Board Manager URL in Arduino IDE Preferences:
https://raw.githubusercontent.com/espressif/arduino-esp32/gh-pages/package_esp32_index.json

// Install ESP32 board support through Board Manager
// Select "ESP32 Dev Module" from Tools > Board

Basic WiFi Connection Example

#include 

const char* ssid = "YourWiFiName";
const char* password = "YourWiFiPassword";

void setup() {
    Serial.begin(115200);
    WiFi.begin(ssid, password);
    
    while (WiFi.status() != WL_CONNECTED) {
        delay(500);
        Serial.print(".");
    }
    
    Serial.println("Connected to WiFi");
}

Meshtastic Implementation

Meshtastic turns your ESP32 device into a mesh networking node, perfect for long-range communication without cellular coverage.

Hardware Requirements

To build a Meshtastic node, you'll need:

• ESP32 development board
• LoRa radio module (SX1276/SX1278)
• Antenna (915MHz for US)
• Battery (optional for portable use)

Basic Configuration

// Example Meshtastic configuration
#include "Meshtastic.h"

void setup() {
    initModem();
    setupMesh();
    // Configure channels and encryption
    // See full documentation for details
}

Build Instructions & Schematics

Follow these detailed schematics and build instructions for creating your own mesh networking node.

Wiring Diagram

ESP32 -> LoRa Module
GPIO5  -> SCK
GPIO19 -> MISO
GPIO27 -> MOSI
GPIO18 -> CS
GPIO14 -> RST
GPIO26 -> DIO0

Case Assembly

A weatherproof case is recommended for outdoor deployment. Key considerations:

• Use IP67 rated enclosure
• Include ventilation while maintaining water resistance
• Proper antenna placement and sealing
• Secure mounting options