Overview

Build LoRa meshes that stay responsive under load and easy to operate day after day. Slow links, crowded slots, and guesswork around presets make networks feel fragile. This book replaces uncertainty with clear engineering choices, field tested workflows, and steady operations. You move from fundamentals to dependable practice, configuring radios with bandwidth, spreading factor, and coding rate that fit real terrain and traffic. Roles and rebroadcast settings are applied with intent so clients, routers, and repeaters cooperate instead of colliding. Channel utilization is measured, not assumed, using AirUtilTX and acceptance thresholds that keep districts healthy. When something slips, the troubleshooting playbooks walk you from symptom to fix with evidence you can show. Firmware work is handled with the same discipline. Builds use PlatformIO, updates run safely over serial and OTA, and cohort rollouts reduce risk. Power policies match duty and sunlight, with sleep profiles and screen settings that actually extend service. On device tools in MUI and BaseUI, including mesh detector, traceroute, statistics, packet log, and RF scanners, turn a handheld into a fast diagnostic kit. Operations at scale are supported end to end. MQTT is organized with a clear ServiceEnvelope and topic plan, private brokers use TLS and ACLs, and integrations add value without flooding the air. Node RED flows and Home Assistant sensors publish useful summaries while guardrails keep downlink safe. Design patterns cover city slot segmentation, mountain backbones, rural corridors, and rapid deployment kits for events and incidents. Monitoring ties it together with focused dashboards and alerts that match policy. Included extras: airtime budget tables, calculator worksheets for planning, a regulatory quick reference for EU 868, US 915, and 433 caveats, security procedures for key rotation and device lifecycle, plus concise runbooks and field checklists. Code content: working CLI commands with compact Bash and Python snippets that translate directly into builds, rollouts, health reports, and safe automations. Add this handbook to your kit and ship reliable mesh service with confidence.

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