Disclosure: As an Amazon Associate I earn from qualifying purchases made with links from the products in this documentation.

LAN IoT is a LAN-first IoT platform designed for secure, local communication in remote locations with intermittent internet connectivity. Unlike cloud-dependent IoT solutions, LAN IoT enables secure RS-232/UART data access via HTTPS and WebSocket Secure (WSS) without requiring constant internet access.

• 🔒 Secure Local Communication - HTTPS/WSS with proper SSL/TLS certificates
• 📡 RS-232/UART Bridge - Real-time serial data streaming to browsers and TCP clients
• 🌐 Browser-Compatible - Modern browsers can connect directly to devices
• 🏭 Industrial Ready - Designed for remote locations (farms, mines, oil fields)
• 🔧 No Cloud Dependency - Operates independently after initial certificate acquisition

• Quick Start Guide - Get up and running in 15 minutes
• System Overview - Architecture and components
• Hardware Requirements - What you need

• Hardware Designs - 3D models and schematics
  • IoTBox V1 - First generation enclosure
  • IoTBox V2 - Second generation enclosure
  • Soldering Rig - Assembly fixture
• Assembly Procedures - Step-by-step assembly instructions
• Bill of Materials (BOM) - Component lists and sourcing

• Core Firmware - ESP32-S3 firmware setup and configuration
• Certificate Signer - Deploy your own certificate authority
• Configuration Guide - System configuration options
• API Reference - HTTP/HTTPS endpoints and WebSocket protocol

• First Deployment - Deploy your first LAN IoT device
• Custom Firmware Builds - Customize and build firmware
• Certificate Management - Understanding SSL/TLS certificates
• Connecting Serial Devices - RS-232/UART device integration
• Troubleshooting Guide - Common issues and solutions

• Industrial Monitoring - Monitor industrial equipment
• Remote Locations - Deployments with intermittent internet
• Legacy Device Integration - Modernize RS-232 equipment

• Contributing Guidelines - How to contribute to the project
• Code of Conduct - Community guidelines
• Development Setup - Set up your development environment
• Contributors - Hall of fame

• GitHub Organization: github.com/laniot
• LinkedIn: Carlos Huggins
• License: Apache 2.0

• 3D printable enclosures (STL files)
• FreeCAD source files for customization
• Assembly fixtures and tooling
• Reference photos and diagrams

• Comprehensive setup guides
• API documentation
• Troubleshooting resources
• Real-world use case examples

• Step-by-step walkthroughs
• Configuration examples
• Best practices
• Integration guides

• Framework: ESP-IDF v5.5.1
• RTOS: FreeRTOS
• Security: mbedTLS (SSL/TLS)
• Storage: NVS (Non-Volatile Storage)
• Protocols: HTTPS, WebSocket Secure (WSS), TCP

• Runtime: Node.js
• Certificate Generation: PKI utilities
• API: RESTful HTTP service

Traditional IoT solutions rely on cloud connectivity, which fails in remote industrial locations with:

• ❌ Intermittent or unreliable internet
• ❌ Expensive or bandwidth-limited connections
• ❌ Security concerns with cloud data storage

LAN IoT solves this by:

• ✅ Operating entirely on local networks
• ✅ Using proper SSL/TLS security (not self-signed certificates)
• ✅ Enabling browser-based access without cloud servers
• ✅ Supporting legacy RS-232/UART devices
• ✅ Providing real-time data streaming via WSS and TCP

See the Images directory for hardware reference photos including:

• Assembly procedures
• Hardware components
• Enclosure designs
• Real-world deployments

We welcome contributions! Please see:

• CONTRIBUTING.md - Contribution guidelines
• CONTRIBUTORS.md - List of contributors

This project is licensed under the Apache License 2.0 - see the LICENSE file for details.

Copyright 2025 Carlos Huggins & LAN-IOT Project Contributors

• ESP-IDF: Apache License 2.0
• FreeRTOS: MIT License
• mbedTLS: Apache License 2.0

See NOTICE file for complete attribution.

Design reviews, integration, and deployment consulting available.

Contact via LinkedIn: Carlos Huggins